| Prefix 1-571-200 | County Fairfax | City Vienna | Carrier Neutral Tandem-virginia, Llc - Va |
| Prefix 1-571-201 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-203 | County | City | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-204 | County Fairfax | City McLean | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-205 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-206 | County Fredericksburg City | City Fredericksburg | Carrier Cox Virginia Telcom, Inc. - Va |
| Prefix 1-571-207 | County Loudoun | City Leesburg | Carrier Ymax Communications Corp. - Va |
| Prefix 1-571-208 | County Manassas City | City Manassas | Carrier Comcast Phone Of Virginia, Inc. - Va |
| Prefix 1-571-209 | County Fredericksburg City | City Fredericksburg | Carrier Cavalier Telephone, Llc |
| Prefix 1-571-210 | County District of Columbia | City Washington | Carrier Bandwidth.com Clec, Llc - Va |
| Prefix 1-571-212 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-213 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-214 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-215 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-216 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-217 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-218 | County Prince Georges | City Beltsville | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-219 | County Montgomery | City Silver Spring | Carrier Usa Mobility Wireless, Inc. |
| Prefix 1-571-220 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-221 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-222 | County Arlington | City Arlington | Carrier Broadwing Communications, Llc - Va |
| Prefix 1-571-223 | County | City | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-224 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-225 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-226 | County Fairfax | City Falls Church | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-227 | County District of Columbia | City Washington | Carrier Teleport Communications America, Llc - Dc |
| Prefix 1-571-228 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-229 | County Prince Georges | City Beltsville | Carrier Us Lec Of Virginia, Llc |
| Prefix 1-571-230 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-231 | County Fairfax | City Alexandria | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-232 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-233 | County Loudoun | City Leesburg | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-234 | County Prince Georges | City Beltsville | Carrier Dslnet Communications Va, Inc. - Va |
| Prefix 1-571-235 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-236 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-237 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-238 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-239 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-241 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-242 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-243 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-244 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-245 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-246 | County Loudoun | City Leesburg | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-247 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-248 | County | City | Carrier Verizon South Inc.-va (contel) |
| Prefix 1-571-249 | County District of Columbia | City Washington | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-250 | County District of Columbia | City Washington | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-251 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-252 | County Loudoun | City Leesburg | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-253 | County Prince Georges | City Beltsville | Carrier Metro Pcs, Inc. |
| Prefix 1-571-254 | County District of Columbia | City Washington | Carrier Broadwing Communications, Llc - Va |
| Prefix 1-571-255 | County District of Columbia | City Washington | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-256 | County Arlington | City Arlington | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-257 | County Fairfax | City McLean | Carrier Cox Virginia Telcom, Inc. - Va |
| Prefix 1-571-258 | County | City | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-259 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-260 | County Prince Georges | City Beltsville | Carrier Level 3 Communications, Llc - Va |
| Prefix 1-571-261 | County | City | Carrier Verizon South Inc.-va (contel) |
| Prefix 1-571-262 | County District of Columbia | City Washington | Carrier Mcimetro Access Transmission Services Llc |
| Prefix 1-571-263 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-264 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-265 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-266 | County District of Columbia | City Washington | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-267 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-268 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-269 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-270 | County Alexandria City | City Alexandria | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-271 | County Spotsylvania | City Fredericksburg | Carrier Coretel Virginia, Llc - Va |
| Prefix 1-571-272 | County Alexandria City | City Alexandria | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-273 | County Alexandria City | City Alexandria | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-274 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-275 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-276 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-277 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-278 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-279 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-280 | County Fairfax | City McLean | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-281 | County Fairfax | City McLean | Carrier Level 3 Communications, Llc - Va |
| Prefix 1-571-282 | County District of Columbia | City Washington | Carrier Broadview Networks, Inc. - Va |
| Prefix 1-571-283 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-284 | County | City | Carrier Verizon South Inc.-va (contel) |
| Prefix 1-571-285 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-286 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-287 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-288 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-289 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-290 | County Manassas City | City Manassas | Carrier Broadvox-clec, Llc - Va |
| Prefix 1-571-291 | County Loudoun | City Leesburg | Carrier Level 3 Communications, Llc - Va |
| Prefix 1-571-292 | County Fairfax | City Herndon | Carrier Cavalier Telephone, Llc |
| Prefix 1-571-293 | County Loudoun | City Leesburg | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-294 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-295 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-296 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-297 | County Fairfax | City McLean | Carrier Level 3 Communications, Llc - Va |
| Prefix 1-571-298 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-299 | County Fairfax | City McLean | Carrier Us Lec Of Virginia, Llc |
| Prefix 1-571-300 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-302 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-303 | County District of Columbia | City Washington | Carrier Teleport Communications America, Llc - Dc |
| Prefix 1-571-304 | County Fairfax | City Centreville | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-305 | County Arlington | City Arlington | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-306 | County District of Columbia | City Washington | Carrier Bandwidth.com Clec, Llc - Va |
| Prefix 1-571-307 | County Fairfax | City Centreville | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-308 | County District of Columbia | City Washington | Carrier Comcast Phone Of Virginia, Inc. - Va |
| Prefix 1-571-309 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-312 | County Manassas City | City Manassas | Carrier Cox Virginia Telcom, Inc. - Va |
| Prefix 1-571-313 | County Manassas City | City Manassas | Carrier Comcast Phone Of Virginia, Inc. - Va |
| Prefix 1-571-314 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-315 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-316 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-317 | County Fairfax | City Chantilly | Carrier Getgo Communications Llc - Va |
| Prefix 1-571-318 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-319 | County Fairfax | City Chantilly | Carrier Comcast Phone Of Virginia, Inc. - Va |
| Prefix 1-571-320 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-321 | County Fairfax | City Herndon | Carrier Cavalier Telephone, Llc |
| Prefix 1-571-322 | County Fairfax | City Herndon | Carrier Cavalier Telephone, Llc |
| Prefix 1-571-323 | County Fairfax | City Herndon | Carrier Cavalier Telephone, Llc |
| Prefix 1-571-324 | County Fairfax | City Reston | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-325 | County Fairfax | City Reston | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-326 | County Prince Georges | City Beltsville | Carrier Xo Virginia, Llc |
| Prefix 1-571-327 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-328 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-329 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-330 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-331 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-332 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-333 | County Loudoun | City Leesburg | Carrier Openband Of Virginia, Inc. |
| Prefix 1-571-334 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-335 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-336 | County District of Columbia | City Washington | Carrier Dslnet Communications Va, Inc. - Va |
| Prefix 1-571-337 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-338 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-339 | County Fairfax | City McLean | Carrier Us Lec Of Virginia, Llc |
| Prefix 1-571-340 | County Prince Georges | City Beltsville | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-341 | County Fairfax | City McLean | Carrier Level 3 Communications, Llc - Va |
| Prefix 1-571-342 | County Prince Georges | City Beltsville | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-343 | County Prince Georges | City Beltsville | Carrier Level 3 Communications, Llc - Va |
| Prefix 1-571-344 | County Prince Georges | City Beltsville | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-345 | County Arlington | City Arlington | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-346 | County | City | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-348 | County District of Columbia | City Washington | Carrier Bandwidth.com Clec, Llc - Va |
| Prefix 1-571-349 | County District of Columbia | City Washington | Carrier Verizon South Inc.-va (contel) |
| Prefix 1-571-350 | County District of Columbia | City Washington | Carrier Neutral Tandem-virginia, Llc - Va |
| Prefix 1-571-351 | County Prince Georges | City Beltsville | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-352 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-353 | County Prince Georges | City Beltsville | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-354 | County District of Columbia | City Washington | Carrier Teleport Communications America, Llc - Dc |
| Prefix 1-571-355 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-356 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-357 | County District of Columbia | City Washington | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-358 | County Prince Georges | City Beltsville | Carrier Cox Virginia Telcom, Inc. - Va |
| Prefix 1-571-359 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-361 | County Fairfax | City Chantilly | Carrier Mcimetro Access Transmission Services Llc |
| Prefix 1-571-362 | County Fairfax | City Reston | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-363 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-364 | County Fairfax | City Chantilly | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-365 | County Prince Georges | City Beltsville | Carrier Metro Pcs, Inc. |
| Prefix 1-571-366 | County Fairfax | City McLean | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-367 | County Arlington | City Arlington | Carrier Verizon South Inc.-va (contel) |
| Prefix 1-571-368 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-369 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-371 | County Fairfax | City Herndon | Carrier Broadview Networks, Inc. - Va |
| Prefix 1-571-372 | County Arlington | City Arlington | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-373 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-374 | County District of Columbia | City Washington | Carrier Ymax Communications Corp. - Va |
| Prefix 1-571-375 | County Manassas City | City Manassas | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-376 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-377 | County District of Columbia | City Washington | Carrier Ymax Communications Corp. - Va |
| Prefix 1-571-378 | County Fairfax | City Vienna | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-379 | County Prince Georges | City Beltsville | Carrier Comcast Phone Of Virginia, Inc. - Va |
| Prefix 1-571-382 | County Fairfax | City Greenway | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-383 | County Prince Georges | City Beltsville | Carrier Mcimetro Access Transmission Services Llc |
| Prefix 1-571-384 | County Fairfax | City McLean | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-385 | County District of Columbia | City Washington | Carrier Bandwidth.com Clec, Llc - Va |
| Prefix 1-571-386 | County Fairfax | City Chantilly | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-388 | County Fairfax | City McLean | Carrier Level 3 Communications, Llc - Va |
| Prefix 1-571-389 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-392 | County Fairfax | City Reston | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-393 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-395 | County Prince Georges | City Beltsville | Carrier Cox Virginia Telcom, Inc. - Va |
| Prefix 1-571-398 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-399 | County District of Columbia | City Washington | Carrier Ymax Communications Corp. - Va |
| Prefix 1-571-402 | County District of Columbia | City Washington | Carrier Coretel Virginia, Llc - Va |
| Prefix 1-571-403 | County District of Columbia | City Washington | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-405 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-406 | County District of Columbia | City Washington | Carrier Core Communications, Inc. - Md |
| Prefix 1-571-408 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-409 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-414 | County Fairfax | City Reston | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-416 | County Fairfax | City Herndon | Carrier Cavalier Telephone, Llc |
| Prefix 1-571-418 | County District of Columbia | City Washington | Carrier Bandwidth.com Clec, Llc - Va |
| Prefix 1-571-419 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-420 | County Loudoun | City Leesburg | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-421 | County Prince Georges | City Beltsville | Carrier Level 3 Communications, Llc - Va |
| Prefix 1-571-422 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-423 | County Fairfax | City Falls Church | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-424 | County Prince Georges | City Beltsville | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-425 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-426 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-427 | County Prince Georges | City Beltsville | Carrier Telnyx Llc |
| Prefix 1-571-428 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-429 | County District of Columbia | City Washington | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-431 | County Alexandria City | City Alexandria | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-432 | County Fairfax | City Fairfax | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-433 | County Arlington | City Arlington | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-434 | County Loudoun | City Sterling | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-435 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-436 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-437 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-438 | County Prince Georges | City Beltsville | Carrier Atx Telecommunications Services, Ltd-va |
| Prefix 1-571-439 | County Spotsylvania | City Fredericksburg | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-441 | County Arlington | City Arlington | Carrier Peerless Network Of Virginia, Llc - Va |
| Prefix 1-571-442 | County Spotsylvania | City Fredericksburg | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-443 | County Prince William | City Woodbridge | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-444 | County Fairfax | City Vienna | Carrier Neutral Tandem-virginia, Llc - Va |
| Prefix 1-571-445 | County District of Columbia | City Washington | Carrier Bandwidth.com Clec, Llc - Va |
| Prefix 1-571-446 | County Fairfax | City McLean | Carrier Level 3 Communications, Llc - Va |
| Prefix 1-571-447 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-448 | County District of Columbia | City Washington | Carrier Local Access Llc - Va |
| Prefix 1-571-449 | County District of Columbia | City Washington | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-451 | County Prince Georges | City Beltsville | Carrier Ctc Communications Corp. - Va |
| Prefix 1-571-452 | County Alexandria City | City Alexandria | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-455 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-457 | County Prince Georges | City Beltsville | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-458 | County District of Columbia | City Washington | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-459 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-465 | County Loudoun | City Leesburg | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-466 | County Prince Georges | City Beltsville | Carrier Metro Pcs, Inc. |
| Prefix 1-571-468 | County Fairfax | City Springfield | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-469 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-471 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-472 | County Fairfax | City Reston | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-474 | County Fairfax | City Vienna | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-477 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-480 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-481 | County Fairfax | City Chantilly | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-482 | County District of Columbia | City Washington | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-483 | County Fairfax | City McLean | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-484 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-485 | County Fairfax | City McLean | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-486 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-488 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-489 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-490 | County Prince Georges | City Beltsville | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-491 | County Prince Georges | City Beltsville | Carrier Metro Pcs, Inc. |
| Prefix 1-571-492 | County Prince William | City Woodbridge | Carrier Cox Virginia Telcom, Inc. - Va |
| Prefix 1-571-494 | County District of Columbia | City Washington | Carrier Verizon South Inc.-va (contel) |
| Prefix 1-571-495 | County Fairfax | City McLean | Carrier Level 3 Communications, Llc - Va |
| Prefix 1-571-499 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-501 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-502 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-505 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-509 | County Loudoun | City Leesburg | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-510 | County Spotsylvania | City Fredericksburg | Carrier Centurylink Communications Llc |
| Prefix 1-571-512 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-514 | County District of Columbia | City Washington | Carrier Cavalier East Llc - Md |
| Prefix 1-571-515 | County District of Columbia | City Washington | Carrier Mcimetro Access Transmission Services Llc |
| Prefix 1-571-521 | County Fairfax | City Herndon | Carrier Cavalier Telephone, Llc |
| Prefix 1-571-522 | County District of Columbia | City Washington | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-524 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-525 | County Prince Georges | City Beltsville | Carrier Airus, Inc. - Va |
| Prefix 1-571-526 | County Loudoun | City Sterling | Carrier Local Access Llc - Va |
| Prefix 1-571-527 | County Loudoun | City Sterling | Carrier Comcast Phone Of Virginia, Inc. - Va |
| Prefix 1-571-528 | County Loudoun | City Leesburg | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-529 | County Prince Georges | City Beltsville | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-533 | County Prince Georges | City Beltsville | Carrier Xo Virginia, Llc |
| Prefix 1-571-535 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-542 | County Prince William | City Woodbridge | Carrier Cox Virginia Telcom, Inc. - Va |
| Prefix 1-571-549 | County Arlington | City Arlington | Carrier Broadvox-clec, Llc - Va |
| Prefix 1-571-550 | County Prince Georges | City Beltsville | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-551 | County Fairfax | City Reston | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-552 | County Prince Georges | City Beltsville | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-553 | County Culpeper | City Culpeper | Carrier Paetec Communications Of Virginia, Llc - Va |
| Prefix 1-571-557 | County Fairfax | City Reston | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-558 | County Fairfax | City Reston | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-565 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-570 | County Fairfax | City Vienna | Carrier Neutral Tandem-virginia, Llc - Va |
| Prefix 1-571-572 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-575 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-577 | County Loudoun | City Leesburg | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-581 | County Fairfax | City Chantilly | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-585 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-589 | County Prince Georges | City Beltsville | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-594 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-598 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-599 | County Prince Georges | City Beltsville | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-606 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-612 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-616 | County District of Columbia | City Washington | Carrier Mcimetro Access Transmission Services Llc |
| Prefix 1-571-620 | County Arlington | City Arlington | Carrier Peerless Network Of Virginia, Llc - Va |
| Prefix 1-571-623 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-633 | County Fairfax | City McLean | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-635 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-639 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-641 | County District of Columbia | City Washington | Carrier Starpower Communications, Llc - Va |
| Prefix 1-571-642 | County Fairfax | City Lorton | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-643 | County Fairfax | City Chantilly | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-645 | County Prince Georges | City Beltsville | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-651 | County District of Columbia | City Washington | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-655 | County Prince Georges | City Beltsville | Carrier Telnyx Llc |
| Prefix 1-571-659 | County Manassas City | City Manassas | Carrier Comcast Phone Of Virginia, Inc. - Va |
| Prefix 1-571-660 | County Fairfax | City Vienna | Carrier Neutral Tandem-virginia, Llc - Va |
| Prefix 1-571-665 | County Fairfax | City Reston | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-666 | County Fairfax | City Chantilly | Carrier Neutral Tandem-virginia, Llc - Va |
| Prefix 1-571-699 | County Prince Georges | City Beltsville | Carrier 365 Wireless, Llc |
| Prefix 1-571-707 | County Culpeper | City Culpeper | Carrier Metro Pcs, Inc. |
| Prefix 1-571-719 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-721 | County District of Columbia | City Washington | Carrier New Cingular Wireless Pcs, Llc - Dc |
| Prefix 1-571-722 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-723 | County Prince Georges | City Beltsville | Carrier Level 3 Communications, Llc - Va |
| Prefix 1-571-730 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-732 | County District of Columbia | City Washington | Carrier Bandwidth.com Clec, Llc - Va |
| Prefix 1-571-733 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-748 | County Fairfax | City McLean | Carrier Cavalier East Llc - Va |
| Prefix 1-571-749 | County District of Columbia | City Washington | Carrier Cavalier East Llc - Va |
| Prefix 1-571-758 | County District of Columbia | City Washington | Carrier Metro Pcs, Inc. |
| Prefix 1-571-762 | County District of Columbia | City Washington | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-765 | County Fairfax | City McLean | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-766 | County District of Columbia | City Washington | Carrier Teleport Communications America, Llc - Dc |
| Prefix 1-571-767 | County District of Columbia | City Washington | Carrier Mcimetro Access Transmission Services Llc |
| Prefix 1-571-775 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-777 | County Fairfax | City Reston | Carrier Voxbeam Telecommunications Inc. - Va |
| Prefix 1-571-778 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-781 | County District of Columbia | City Washington | Carrier Bandwidth.com Clec, Llc - Va |
| Prefix 1-571-789 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-799 | County | City | Carrier Peerless Network Of Virginia, Llc - Va |
| Prefix 1-571-800 | County Fairfax | City Vienna | Carrier Neutral Tandem-virginia, Llc - Va |
| Prefix 1-571-814 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-830 | County District of Columbia | City Washington | Carrier Cox Virginia Telcom, Inc. - Va |
| Prefix 1-571-831 | County Fredericksburg City | City Fredericksburg | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-835 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-839 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-858 | County Fairfax | City Reston | Carrier Mci Worldcom Communications, Inc. - Va |
| Prefix 1-571-867 | County Fairfax | City Chantilly | Carrier Commio, Llc |
| Prefix 1-571-882 | County District of Columbia | City Washington | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-888 | County Prince Georges | City Beltsville | Carrier Peerless Network Of Virginia, Llc - Va |
| Prefix 1-571-918 | County Loudoun | City Leesburg | Carrier Comcast Phone Of Virginia, Inc. - Va |
| Prefix 1-571-919 | County Spotsylvania | City Fredericksburg | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-921 | County District of Columbia | City Washington | Carrier Verizon South Inc.-va (contel) |
| Prefix 1-571-926 | County Fairfax | City Chantilly | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-931 | County District of Columbia | City Washington | Carrier Cavalier East Llc - Va |
| Prefix 1-571-932 | County District of Columbia | City Washington | Carrier Cavalier East Llc - Va |
| Prefix 1-571-933 | County District of Columbia | City Washington | Carrier Cavalier East Llc - Va |
| Prefix 1-571-934 | County District of Columbia | City Washington | Carrier Cavalier East Llc - Va |
| Prefix 1-571-936 | County | City | Carrier Verizon Virginia, Inc. |
| Prefix 1-571-969 | County District of Columbia | City Washington | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-970 | County Manassas City | City Manassas | Carrier Comcast Phone Of Virginia, Inc. - Va |
| Prefix 1-571-982 | County Manassas City | City Manassas | Carrier Cellco Partnership Dba Verizon Wireless - Va |
| Prefix 1-571-989 | County District of Columbia | City Washington | Carrier Bandwidth.com Clec, Llc - Va |
| Prefix 1-571-991 | County District of Columbia | City Washington | Carrier Sprint Spectrum L.p. |
| Prefix 1-571-992 | County Prince Georges | City Beltsville | Carrier Omnipoint Communications Cap Operations, Llc |
| Prefix 1-571-999 | County Fairfax | City Vienna | Carrier Neutral Tandem-virginia, Llc - Va |