Area Code 331 phone numbers
State: Illinois
- In service since: 2007
- Landlines: 47
- Wireless prefixes: 70
- Carriers: 22
- Counties: 4
- ZIP codes: 17
- Major cities: Chicago, Hickory Hills, Elgin, Arlington Heights, West Chicago
Area Code 331 has 110 prefixes
| Prefix | County | City | Carrier |
|---|---|---|---|
| 1-331-200 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-200 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-201 | Kane | Elgin | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-201 | ||
| Country | Kane | ||
| City | Elgin | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-202 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| Prefix | 1-331-202 | ||
| Country | Cook | ||
| City | Arlington Heights | ||
| Carrier | Sprint Spectrum L.p. | ||
| 1-331-203 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| Prefix | 1-331-203 | ||
| Country | Cook | ||
| City | Arlington Heights | ||
| Carrier | Sprint Spectrum L.p. | ||
| 1-331-204 | Cook | Chicago | Neutral Tandem-illinois, Llc - Il |
| Prefix | 1-331-204 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Neutral Tandem-illinois, Llc - Il | ||
| 1-331-205 | Cook | Arlington Heights | T-mobile Usa, Inc. |
| Prefix | 1-331-205 | ||
| Country | Cook | ||
| City | Arlington Heights | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-206 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| Prefix | 1-331-206 | ||
| Country | Cook | ||
| City | Arlington Heights | ||
| Carrier | Sprint Spectrum L.p. | ||
| 1-331-207 | Cook | Chicago | Level 3 Communications, Llc - Il |
| Prefix | 1-331-207 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Level 3 Communications, Llc - Il | ||
| 1-331-208 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| Prefix | 1-331-208 | ||
| Country | Cook | ||
| City | Arlington Heights | ||
| Carrier | Sprint Spectrum L.p. | ||
| 1-331-209 | Cook | Chicago | Level 3 Communications, Llc - Il |
| Prefix | 1-331-209 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Level 3 Communications, Llc - Il | ||
| 1-331-210 | DuPage | West Chicago | Peerless Network Of Illinois, Llc - Il |
| Prefix | 1-331-210 | ||
| Country | DuPage | ||
| City | West Chicago | ||
| Carrier | Peerless Network Of Illinois, Llc - Il | ||
| 1-331-212 | Cook | Hickory Hills | Mci Worldcom Communications, Inc. - Il |
| Prefix | 1-331-212 | ||
| Country | Cook | ||
| City | Hickory Hills | ||
| Carrier | Mci Worldcom Communications, Inc. - Il | ||
| 1-331-213 | Cook | Hickory Hills | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-213 | ||
| Country | Cook | ||
| City | Hickory Hills | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-214 | Kane | Elgin | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-214 | ||
| Country | Kane | ||
| City | Elgin | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-215 | Cook | Hickory Hills | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-215 | ||
| Country | Cook | ||
| City | Hickory Hills | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-216 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-216 | ||
| Country | DuPage | ||
| City | Willowbrook | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-218 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-218 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-219 | DuPage | West Chicago | Telnyx Llc |
| Prefix | 1-331-219 | ||
| Country | DuPage | ||
| City | West Chicago | ||
| Carrier | Telnyx Llc | ||
| 1-331-220 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| Prefix | 1-331-220 | ||
| Country | Cook | ||
| City | Arlington Heights | ||
| Carrier | Sprint Spectrum L.p. | ||
| 1-331-221 | DuPage | Elmhurst | Ameritech Illinois |
| Prefix | 1-331-221 | ||
| Country | DuPage | ||
| City | Elmhurst | ||
| Carrier | Ameritech Illinois | ||
| 1-331-222 | DuPage | West Chicago | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-222 | ||
| Country | DuPage | ||
| City | West Chicago | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-223 | Kane | Elgin | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-223 | ||
| Country | Kane | ||
| City | Elgin | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-225 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| Prefix | 1-331-225 | ||
| Country | Cook | ||
| City | Arlington Heights | ||
| Carrier | Sprint Spectrum L.p. | ||
| 1-331-226 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-226 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-227 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-227 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-228 | Cook | Chicago | Ovation Communications Of Illinois, Inc. |
| Prefix | 1-331-228 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Ovation Communications Of Illinois, Inc. | ||
| 1-331-229 | Cook | Hickory Hills | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-229 | ||
| Country | Cook | ||
| City | Hickory Hills | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-230 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-230 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-231 | Cook | Hickory Hills | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-231 | ||
| Country | Cook | ||
| City | Hickory Hills | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-232 | Lake | Buffalo Grove | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-232 | ||
| Country | Lake | ||
| City | Buffalo Grove | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-233 | Kane | Elgin | Telnyx Llc |
| Prefix | 1-331-233 | ||
| Country | Kane | ||
| City | Elgin | ||
| Carrier | Telnyx Llc | ||
| 1-331-234 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-234 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-235 | Kane | Elgin | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-235 | ||
| Country | Kane | ||
| City | Elgin | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-236 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-236 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-240 | Cook | Chicago | Peerless Network Of Illinois, Llc - Il |
| Prefix | 1-331-240 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Peerless Network Of Illinois, Llc - Il | ||
| 1-331-244 | Cook | Chicago | Neutral Tandem-illinois, Llc |
| Prefix | 1-331-244 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Neutral Tandem-illinois, Llc | ||
| 1-331-245 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-245 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-248 | Cook | Chicago | Comcast Phone Of Illinois, Llc Dba Comco - Il |
| Prefix | 1-331-248 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Comcast Phone Of Illinois, Llc Dba Comco - Il | ||
| 1-331-250 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-250 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-251 | Kane | Elgin | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-251 | ||
| Country | Kane | ||
| City | Elgin | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-253 | Kane | Elgin | T-mobile Usa, Inc. |
| Prefix | 1-331-253 | ||
| Country | Kane | ||
| City | Elgin | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-254 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-254 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-255 | Cook | Chicago | Neutral Tandem-illinois, Llc |
| Prefix | 1-331-255 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Neutral Tandem-illinois, Llc | ||
| 1-331-256 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-256 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-262 | DuPage | West Chicago | Sprint Spectrum L.p. |
| Prefix | 1-331-262 | ||
| Country | DuPage | ||
| City | West Chicago | ||
| Carrier | Sprint Spectrum L.p. | ||
| 1-331-263 | Cook | Chicago | Neutral Tandem-illinois, Llc - Il |
| Prefix | 1-331-263 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Neutral Tandem-illinois, Llc - Il | ||
| 1-331-276 | DuPage | West Chicago | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-276 | ||
| Country | DuPage | ||
| City | West Chicago | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-281 | DuPage | Naperville | Ameritech Illinois |
| Prefix | 1-331-281 | ||
| Country | DuPage | ||
| City | Naperville | ||
| Carrier | Ameritech Illinois | ||
| 1-331-300 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-300 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-301 | Cook | Chicago | Local Access Llc - Il |
| Prefix | 1-331-301 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Local Access Llc - Il | ||
| 1-331-302 | Cook | Hickory Hills | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-302 | ||
| Country | Cook | ||
| City | Hickory Hills | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-303 | Cook | Chicago | Cibolo Creek Ventures, Llc Dba Routepoint Comm Il |
| Prefix | 1-331-303 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Cibolo Creek Ventures, Llc Dba Routepoint Comm Il | ||
| 1-331-305 | Cook | Hickory Hills | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-305 | ||
| Country | Cook | ||
| City | Hickory Hills | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-307 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-307 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-308 | Cook | Chicago | Bandwidth.com Clec, Llc - Il |
| Prefix | 1-331-308 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Bandwidth.com Clec, Llc - Il | ||
| 1-331-310 | Cook | Chicago | Bandwidth.com Clec, Llc - Il |
| Prefix | 1-331-310 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Bandwidth.com Clec, Llc - Il | ||
| 1-331-315 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-315 | ||
| Country | DuPage | ||
| City | Willowbrook | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-318 | Cook | Chicago | Local Access Llc - Il |
| Prefix | 1-331-318 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Local Access Llc - Il | ||
| 1-331-321 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-321 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-330 | Lake | Buffalo Grove | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-330 | ||
| Country | Lake | ||
| City | Buffalo Grove | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-332 | DuPage | Naperville | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-332 | ||
| Country | DuPage | ||
| City | Naperville | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-333 | Cook | Chicago | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-333 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-385 | Cook | Chicago | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-385 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-401 | Cook | Hickory Hills | Level 3 Communications, Llc - Il |
| Prefix | 1-331-401 | ||
| Country | Cook | ||
| City | Hickory Hills | ||
| Carrier | Level 3 Communications, Llc - Il | ||
| 1-331-422 | Cook | Chicago | Level 3 Communications, Llc - Il |
| Prefix | 1-331-422 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Level 3 Communications, Llc - Il | ||
| 1-331-425 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-425 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-431 | Cook | Chicago | Bandwidth.com Clec, Llc - Il |
| Prefix | 1-331-431 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Bandwidth.com Clec, Llc - Il | ||
| 1-331-442 | Kane | Elgin | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-442 | ||
| Country | Kane | ||
| City | Elgin | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-444 | Cook | Hickory Hills | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-444 | ||
| Country | Cook | ||
| City | Hickory Hills | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-452 | Cook | Hickory Hills | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-452 | ||
| Country | Cook | ||
| City | Hickory Hills | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-454 | DuPage | West Chicago | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-454 | ||
| Country | DuPage | ||
| City | West Chicago | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-456 | Cook | Chicago | First Communications Llc - Il |
| Prefix | 1-331-456 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | First Communications Llc - Il | ||
| 1-331-457 | Cook | Hickory Hills | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-457 | ||
| Country | Cook | ||
| City | Hickory Hills | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-462 | DuPage | Oak Brook | Xo Illinois, Inc. |
| Prefix | 1-331-462 | ||
| Country | DuPage | ||
| City | Oak Brook | ||
| Carrier | Xo Illinois, Inc. | ||
| 1-331-465 | Cook | Chicago | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-465 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-472 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-472 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-481 | Kane | Elgin | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-481 | ||
| Country | Kane | ||
| City | Elgin | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-551 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-551 | ||
| Country | DuPage | ||
| City | Willowbrook | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-575 | DuPage | West Chicago | Sprint Spectrum L.p. |
| Prefix | 1-331-575 | ||
| Country | DuPage | ||
| City | West Chicago | ||
| Carrier | Sprint Spectrum L.p. | ||
| 1-331-588 | DuPage | West Chicago | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-588 | ||
| Country | DuPage | ||
| City | West Chicago | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-625 | Kane | Elgin | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-625 | ||
| Country | Kane | ||
| City | Elgin | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-642 | Cook | Chicago | Bandwidth.com Clec, Llc - Il |
| Prefix | 1-331-642 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Bandwidth.com Clec, Llc - Il | ||
| 1-331-643 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| Prefix | 1-331-643 | ||
| Country | Cook | ||
| City | Arlington Heights | ||
| Carrier | Sprint Spectrum L.p. | ||
| 1-331-645 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| Prefix | 1-331-645 | ||
| Country | Cook | ||
| City | Arlington Heights | ||
| Carrier | Sprint Spectrum L.p. | ||
| 1-331-684 | DuPage | Naperville | Sigecom, Llc Dba Wow Internet Cable And Phone |
| Prefix | 1-331-684 | ||
| Country | DuPage | ||
| City | Naperville | ||
| Carrier | Sigecom, Llc Dba Wow Internet Cable And Phone | ||
| 1-331-701 | Cook | Hickory Hills | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-701 | ||
| Country | Cook | ||
| City | Hickory Hills | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-702 | Cook | Elk Grove Village | Mci Worldcom Communications, Inc. - Il |
| Prefix | 1-331-702 | ||
| Country | Cook | ||
| City | Elk Grove Village | ||
| Carrier | Mci Worldcom Communications, Inc. - Il | ||
| 1-331-703 | Lake | Buffalo Grove | T-mobile Usa, Inc. |
| Prefix | 1-331-703 | ||
| Country | Lake | ||
| City | Buffalo Grove | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-704 | Cook | Chicago | Bandwidth.com Clec, Llc - Il |
| Prefix | 1-331-704 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Bandwidth.com Clec, Llc - Il | ||
| 1-331-707 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-707 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-717 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-717 | ||
| Country | DuPage | ||
| City | Willowbrook | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-725 | DuPage | Willowbrook | New Cingular Wireless Pcs, Llc - Il |
| Prefix | 1-331-725 | ||
| Country | DuPage | ||
| City | Willowbrook | ||
| Carrier | New Cingular Wireless Pcs, Llc - Il | ||
| 1-331-757 | Kane | Elgin | T-mobile Usa, Inc. |
| Prefix | 1-331-757 | ||
| Country | Kane | ||
| City | Elgin | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-771 | Cook | Chicago | Neutral Tandem-illinois, Llc - Il |
| Prefix | 1-331-771 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Neutral Tandem-illinois, Llc - Il | ||
| 1-331-775 | DuPage | Willowbrook | Comcast Phone Of Illinois, Llc Dba Comco - Il |
| Prefix | 1-331-775 | ||
| Country | DuPage | ||
| City | Willowbrook | ||
| Carrier | Comcast Phone Of Illinois, Llc Dba Comco - Il | ||
| 1-331-777 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-777 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-801 | DuPage | Oak Brook | Teleport Communications America, Llc - Il |
| Prefix | 1-331-801 | ||
| Country | DuPage | ||
| City | Oak Brook | ||
| Carrier | Teleport Communications America, Llc - Il | ||
| 1-331-803 | Cook | Chicago | Peerless Network Of Illinois, Llc - Il |
| Prefix | 1-331-803 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Peerless Network Of Illinois, Llc - Il | ||
| 1-331-806 | Cook | Chicago | Comcast Phone Of Illinois, Llc Dba Comco - Il |
| Prefix | 1-331-806 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Comcast Phone Of Illinois, Llc Dba Comco - Il | ||
| 1-331-808 | Cook | Chicago | Bandwidth.com Clec, Llc - Il |
| Prefix | 1-331-808 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Bandwidth.com Clec, Llc - Il | ||
| 1-331-814 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-814 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-826 | Cook | Arlington Heights | Sprint Spectrum L.p. |
| Prefix | 1-331-826 | ||
| Country | Cook | ||
| City | Arlington Heights | ||
| Carrier | Sprint Spectrum L.p. | ||
| 1-331-871 | Lake | Buffalo Grove | Neutral Tandem-illinois, Llc - Il |
| Prefix | 1-331-871 | ||
| Country | Lake | ||
| City | Buffalo Grove | ||
| Carrier | Neutral Tandem-illinois, Llc - Il | ||
| 1-331-888 | Cook | Chicago | Peerless Network Of Illinois, Llc - Il |
| Prefix | 1-331-888 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Peerless Network Of Illinois, Llc - Il | ||
| 1-331-901 | DuPage | West Chicago | Bandwidth.com Clec, Llc - Il |
| Prefix | 1-331-901 | ||
| Country | DuPage | ||
| City | West Chicago | ||
| Carrier | Bandwidth.com Clec, Llc - Il | ||
| 1-331-903 | Lake | Buffalo Grove | At&t Corp. |
| Prefix | 1-331-903 | ||
| Country | Lake | ||
| City | Buffalo Grove | ||
| Carrier | At&t Corp. | ||
| 1-331-979 | Cook | Chicago | Comcast Phone Of Illinois, Llc Dba Comco - Il |
| Prefix | 1-331-979 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Comcast Phone Of Illinois, Llc Dba Comco - Il | ||
| 1-331-980 | Cook | Chicago | T-mobile Usa, Inc. |
| Prefix | 1-331-980 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | T-mobile Usa, Inc. | ||
| 1-331-998 | Kane | Elgin | Cellco Partnership Dba Verizon Wireless - Il |
| Prefix | 1-331-998 | ||
| Country | Kane | ||
| City | Elgin | ||
| Carrier | Cellco Partnership Dba Verizon Wireless - Il | ||
| 1-331-999 | Cook | Chicago | Bandwidth.com Clec, Llc - Il |
| Prefix | 1-331-999 | ||
| Country | Cook | ||
| City | Chicago | ||
| Carrier | Bandwidth.com Clec, Llc - Il | ||
