Area Code 331 Location - Illinois
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Cities in Areacode 331
- Addison
- North Aurora
- Bartlett
- Batavia
- Bensenville
- Bloomingdale
- Bolingbrook
- Carol Stream
- Darien
- Downers Grove
- Elmhurst
- Glen Ellyn
- Glendale Heights
- Hanover Park
- Lisle
- Lombard
- Naperville
- Roselle
- Saint Charles
- Streamwood
- Villa Park
- West Chicago
- Westmont
- Wheaton
- Woodridge
| PREFIX | USAGE | PRIMARY CITY | CARRIER |
|---|---|---|---|
| 331-643- | Wireless | Aurora | Sprint Spectrum L.p. |
| 331-462- | Landline | Lombard | Xo Illinois |
| 331-225- | Wireless | Elmhurst | Sprint Spectrum L.p. |
| 331-472- | Wireless | Naperville | T-mobile Usa |
| 331-221- | Landline | Elmhurst | Ameritech Illinois |
| 331-210- | Landline | Saint Charles | Peerless Network Of Illinois |
| 331-212- | Landline | Aurora | Mci Worldcom Communications |
| 331-209- | Wireless | Elmhurst | Level 3 Communications |
| 331-214- | Wireless | Downers Grove | Cellco Partnership DBA Verizon Wireless |
| 331-431- | Wireless | Aurora | Bandwidth.com Clec |
| 331-202- | Wireless | Elmhurst | Sprint Spectrum L.p. |
| 331-229- | Wireless | Naperville | Cellco Partnership DBA Verizon Wireless |
| 331-703- | Wireless | West Chicago | T-mobile Usa |
| 331-465- | Wireless | West Chicago | New Cingular Wireless PCS |
| 331-888- | Landline | Warrenville | Peerless Network Of Illinois |
| 331-305- | Wireless | Naperville | Cellco Partnership DBA Verizon Wireless |
| 331-245- | Wireless | Bartlett | T-mobile Usa |
| 331-240- | Landline | West Chicago | Peerless Network Of Illinois |
| 331-442- | Wireless | Saint Charles | Cellco Partnership DBA Verizon Wireless |
| 331-452- | Wireless | Aurora | Cellco Partnership DBA Verizon Wireless |
| 331-575- | Wireless | Aurora | Sprint Spectrum L.p. |
| 331-251- | Wireless | Downers Grove | Cellco Partnership DBA Verizon Wireless |
| 331-303- | Landline | Elburn | Cibolo Creek Ventures DBA Routepoint Comm Il |
| 331-457- | Wireless | Naperville | Cellco Partnership DBA Verizon Wireless |
| 331-250- | Wireless | Aurora | T-mobile Usa |
| 331-213- | Wireless | Naperville | Cellco Partnership DBA Verizon Wireless |
| 331-318- | Landline | Lemont | Local Access LLC |
| 331-903- | Unknown | Sbc Internet Services | |
| 331-333- | Wireless | Naperville | Cricket Communications |
| 331-234- | Wireless | Sugar Grove | Cellco Partnership DBA Verizon Wireless |
| 331-207- | Landline | Yorkville | Level 3 Communications |
| 331-201- | Wireless | Downers Grove | Cellco Partnership DBA Verizon Wireless |
| 331-332- | Wireless | Naperville | Cricket Communications |
| 331-248- | Landline | Geneva | Comcast Phone Of Illinois DBA Comco |
| 331-725- | Landline | Oswego | New Cingular Wireless PCS |
| 331-204- | Landline | Bartlett | Broadvox-clec |
| 331-801- | Unknown | Teleport Communications America | |
| 331-625- | Wireless | Downers Grove | Cellco Partnership DBA Verizon Wireless |
| 331-642- | Wireless | Elmhurst | Bandwidth.com Clec |
| 331-422- | Landline | Saint Charles | Level 3 Communications |
| 331-481- | Wireless | Downers Grove | Cellco Partnership DBA Verizon Wireless |
| 331-425- | Wireless | Aurora | T-mobile Usa |
| 331-254- | Unknown | T-mobile Usa | |
| 331-645- | Wireless | Elmhurst | Sprint Spectrum L.p. |
| 331-777- | Landline | Downers Grove | Cellco Partnership DBA Verizon Wireless |
| 331-220- | Wireless | Aurora | Sprint Spectrum L.p. |
| 331-551- | Wireless | Lombard | Cricket Communications |
| 331-222- | Wireless | Saint Charles | Cricket Communications |
| 331-826- | Wireless | Elmhurst | Sprint Spectrum L.p. |
| 331-803- | Landline | Lemont | Peerless Network Of Illinois |
| 331-262- | Wireless | Aurora | Sprint Spectrum L.p. |
| 331-588- | Wireless | Saint Charles | New Cingular Wireless PCS |
| 331-216- | Wireless | Oswego | New Cingular Wireless PCS |
| 331-684- | Landline | Aurora | Sigecom |
| 331-302- | Wireless | Aurora | Cellco Partnership DBA Verizon Wireless |
| 331-223- | Wireless | Saint Charles | Cricket Communications |
| 331-281- | Landline | Naperville | Ameritech Illinois |
| 331-203- | Wireless | Aurora | Sprint Spectrum L.p. |
| 331-301- | Landline | Aurora | Local Access LLC |
| 331-456- | Landline | Roselle | First Communications LLC |
| 331-444- | Landline | Naperville | Cellco Partnership DBA Verizon Wireless |
| 331-215- | Wireless | Naperville | Cellco Partnership DBA Verizon Wireless |
| 331-208- | Wireless | Aurora | Sprint Spectrum L.p. |
| 331-228- | Wireless | Saint Charles | Ovation Communications Of Illinois |
| 331-702- | Landline | Naperville | Mci Worldcom Communications |
| 331-256- | Wireless | Aurora | Cellco Partnership DBA Verizon Wireless |
| 331-330- | Landline | Oswego | Cricket Communications |
| 331-205- | Wireless | Aurora | T-mobile Usa |
| 331-200- | Wireless | Bartlett | T-mobile Usa |
| 331-825- | Unknown | Digital Network Access Communications | |
| 331-218- | Wireless | Wheaton | T-mobile Usa |
| 331-454- | Wireless | Aurora | Cricket Communications |
| 331-999- | Landline | Oswego | Bandwidth.com Clec |
| 331-206- | Wireless | Aurora | Sprint Spectrum L.p. |
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