The 331 Area Code (or Area Code 331) is located in the state of IL. Area Code 331 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 23.3 thousand unique phone numbers and 77.5 thousand individuals near the city of Hanover Park
Area code 331 was put into service. Area code 331 is an overlay of area code 630.
Aurora, Bartlett, Downers Grove, Elburn, Elmhurst, Geneva, Lemont, Lombard, Naperville, Oswego, Roselle, Saint Charles, Sugar Grove, Warrenville, West Chicago, Wheaton, Yorkville.
| PREFIX | COUNTY | CITY | CARRIER | TYPE |
|---|---|---|---|---|
| 331-200 | Cook | Bartlett | T-Mobile Usa, Inc. | Wireless |
| 331-201 | DuPage | Downers Grove | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
| 331-202 | DuPage | Elmhurst | Sprint Spectrum L.p. | Wireless |
| 331-203 | Kane | Aurora | Sprint Spectrum L.p. | Wireless |
| 331-205 | Kane | Aurora | T-Mobile Usa, Inc. | Wireless |
| 331-206 | Kane | Aurora | Sprint Spectrum L.p. | Wireless |
| 331-207 | Kendall | Yorkville | Level 3 Communications, Llc - IL | Landline |
| 331-208 | Kane | Aurora | Sprint Spectrum L.p. | Wireless |
| 331-209 | DuPage | Elmhurst | Level 3 Communications, Llc - IL | Wireless |
| 331-210 | Kane | Saint Charles | Peerless Network Of Illinois, Llc - IL | Landline |
| 331-212 | Kane | Aurora | Mci Worldcom Communications, Inc. - IL | Landline |
| 331-213 | DuPage | Naperville | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
| 331-214 | DuPage | Downers Grove | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
| 331-215 | DuPage | Naperville | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
| 331-216 | Kendall | Oswego | New Cingular Wireless Pcs, Llc - IL | Wireless |
| 331-220 | Kane | Aurora | Sprint Spectrum L.p. | Wireless |
| 331-221 | DuPage | Elmhurst | Ameritech Illinois | Landline |
| 331-222 | Kane | Saint Charles | New Cingular Wireless Pcs, Llc - IL | Wireless |
| 331-223 | Kane | Saint Charles | New Cingular Wireless Pcs, Llc - IL | Wireless |
| 331-225 | DuPage | Elmhurst | Sprint Spectrum L.p. | Wireless |
| 331-228 | Kane | Saint Charles | Ovation Communications Of Illinois, Inc. | Wireless |
| 331-229 | DuPage | Naperville | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
| 331-240 | DuPage | West Chicago | Peerless Network Of Illinois, Llc - IL | Landline |
| 331-245 | Cook | Bartlett | T-Mobile Usa, Inc. | Wireless |
| 331-248 | Kane | Geneva | Comcast Phone Of Illinois, Llc Dba Comco - IL | Landline |
| 331-250 | Kane | Aurora | T-Mobile Usa, Inc. | Wireless |
| 331-251 | DuPage | Downers Grove | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
| 331-256 | Kane | Aurora | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
| 331-262 | Kane | Aurora | Sprint Spectrum L.p. | Wireless |
| 331-281 | DuPage | Naperville | Ameritech Illinois | Landline |
| 331-301 | Kane | Aurora | Local Access Llc - IL | Landline |
| 331-302 | Kane | Aurora | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
| 331-303 | Kane | Elburn | Cibolo Creek Ventures, Llc Dba Routepoint Comm IL | Landline |
| 331-330 | Kendall | Oswego | New Cingular Wireless Pcs, Llc - IL | Landline |
| 331-332 | DuPage | Naperville | New Cingular Wireless Pcs, Llc - IL | Wireless |
| 331-333 | DuPage | Naperville | New Cingular Wireless Pcs, Llc - IL | Wireless |
| 331-422 | Kane | Saint Charles | Level 3 Communications, Llc - IL | Landline |
| 331-425 | Kane | Aurora | T-Mobile Usa, Inc. | Wireless |
| 331-431 | Kane | Aurora | Bandwidth.com Clec, Llc - IL | Wireless |
| 331-442 | Kane | Saint Charles | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
| 331-444 | DuPage | Naperville | Cellco Partnership Dba Verizon Wireless - IL | Landline |
| 331-452 | Kane | Aurora | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
| 331-454 | Kane | Aurora | New Cingular Wireless Pcs, Llc - IL | Wireless |
| 331-456 | DuPage | Roselle | First Communications Llc - IL | Landline |
| 331-457 | DuPage | Naperville | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
| 331-462 | DuPage | Lombard | Xo Illinois, Inc. | Landline |
| 331-465 | DuPage | West Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
| 331-472 | DuPage | Naperville | T-Mobile Usa, Inc. | Wireless |
| 331-481 | DuPage | Downers Grove | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
| 331-551 | DuPage | Lombard | New Cingular Wireless Pcs, Llc - IL | Wireless |
| 331-575 | Kane | Aurora | Sprint Spectrum L.p. | Wireless |
| 331-588 | Kane | Saint Charles | New Cingular Wireless Pcs, Llc - IL | Wireless |
| 331-625 | DuPage | Downers Grove | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
| 331-642 | DuPage | Elmhurst | Bandwidth.com Clec, Llc - IL | Wireless |
| 331-643 | Kane | Aurora | Sprint Spectrum L.p. | Wireless |
| 331-645 | DuPage | Elmhurst | Sprint Spectrum L.p. | Wireless |
| 331-684 | Kane | Aurora | Sigecom, Llc Dba Wow Internet Cable And Phone | Landline |
| 331-725 | Kendall | Oswego | New Cingular Wireless Pcs, Llc - IL | Landline |
| 331-777 | DuPage | Downers Grove | Cellco Partnership Dba Verizon Wireless - IL | Landline |
| 331-803 | Cook | Lemont | Peerless Network Of Illinois, Llc - IL | Landline |
| 331-825 | Not available. | Not available. | Digital Network Access Communications, Inc. - IL | |
| 331-826 | DuPage | Elmhurst | Sprint Spectrum L.p. | Wireless |
| 331-888 | DuPage | Warrenville | Peerless Network Of Illinois, Llc - IL | Landline |
| 331-999 | Kendall | Oswego | Bandwidth.com Clec, Llc - IL | Landline |
| Phone Number 331-240-3747 |
USAGE Landline |
City West Chicago |
Operate Read more about who called from 3312403747 |
Update Time Mar-20-2024 |
| Phone Number 331-256-3964 |
USAGE Wireless |
City Aurora |
Operate Read more about who called from 3312563964 |
Update Time Mar-19-2024 |
| Phone Number 331-268-0334 |
USAGE Wireless |
City Aurora |
Operate Read more about who called from 3312680334 |
Update Time Mar-19-2024 |
| Phone Number 331-946-6148 |
USAGE Wireless |
City Aurora |
Operate Read more about who called from 3319466148 |
Update Time Mar-19-2024 |
| Phone Number 331-803-4784 |
USAGE Landline |
City Lemont |
Operate Read more about who called from 3318034784 |
Update Time Mar-19-2024 |
| Phone Number 331-899-4618 |
USAGE Landline |
City Lemont |
Operate Read more about who called from 3318994618 |
Update Time Mar-19-2024 |
| Phone Number 331-271-8298 |
USAGE Landline |
City Lemont |
Operate Read more about who called from 3312718298 |
Update Time Dec-27-2023 |
| Phone Number 331-303-5307 |
USAGE Landline |
City Elburn |
Operate Read more about who called from 3313035307 |
Update Time Dec-26-2023 |
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