Illinois 市外局番: 331

Note：331 市外局番は Illinois, アメリカ合衆国. 国際番号は 001331 or 001-331、0010331、+1-331、+1+331、+1331、00-1-331、00 1 331.

More About Area Code 331

Area Code 331 was first put in service October 7, 2007. Currently, the largest city it serves is Aurora, IL, and it overlaps coverage areas with area code 630.

Active Phone Number Prefixes

Prefix	Usage	Primary City	Carrier
(331) 200-	Wireless	Bartlett	T-mobile Usa
(331) 201-	Wireless	Downers Grove	Cellco Partnership DBA Verizon Wireless
(331) 202-	Wireless	Elmhurst	Sprint Spectrum L.p.
(331) 203-	Wireless	Aurora	Sprint Spectrum L.p.
(331) 204-	Landline	Bartlett	Broadvox-clec
(331) 205-	Wireless	Aurora	T-mobile Usa
(331) 206-	Wireless	Aurora	Sprint Spectrum L.p.
(331) 207-	Landline	Yorkville	Level 3 Communications
(331) 208-	Wireless	Aurora	Sprint Spectrum L.p.
(331) 209-	Wireless	Elmhurst	Level 3 Communications
(331) 210-	Landline	Saint Charles	Peerless Network Of Illinois
(331) 212-	Landline	Aurora	Mci Worldcom Communications
(331) 213-	Wireless	Naperville	Cellco Partnership DBA Verizon Wireless
(331) 214-	Wireless	Downers Grove	Cellco Partnership DBA Verizon Wireless
(331) 215-	Wireless	Naperville	Cellco Partnership DBA Verizon Wireless
(331) 216-	Wireless	Oswego	New Cingular Wireless PCS
(331) 218-	Wireless	Wheaton	T-mobile Usa
(331) 220-	Wireless	Aurora	Sprint Spectrum L.p.
(331) 221-	Landline	Elmhurst	Ameritech Illinois
(331) 222-	Wireless	Saint Charles	Cricket Communications
(331) 223-	Wireless	Saint Charles	Cricket Communications
(331) 225-	Wireless	Elmhurst	Sprint Spectrum L.p.
(331) 228-	Wireless	Saint Charles	Ovation Communications Of Illinois
(331) 229-	Wireless	Naperville	Cellco Partnership DBA Verizon Wireless
(331) 234-	Wireless	Sugar Grove	Cellco Partnership DBA Verizon Wireless
(331) 240-	Landline	West Chicago	Peerless Network Of Illinois
(331) 245-	Wireless	Bartlett	T-mobile Usa
(331) 248-	Landline	Geneva	Comcast Phone Of Illinois DBA Comco
(331) 250-	Wireless	Aurora	T-mobile Usa
(331) 251-	Wireless	Downers Grove	Cellco Partnership DBA Verizon Wireless
(331) 254-	Unknown		T-mobile Usa
(331) 256-	Wireless	Aurora	Cellco Partnership DBA Verizon Wireless
(331) 262-	Wireless	Aurora	Sprint Spectrum L.p.
(331) 281-	Landline	Naperville	Ameritech Illinois
(331) 301-	Landline	Aurora	Local Access LLC
(331) 302-	Wireless	Aurora	Cellco Partnership DBA Verizon Wireless
(331) 303-	Landline	Elburn	Cibolo Creek Ventures DBA Routepoint Comm Il
(331) 305-	Wireless	Naperville	Cellco Partnership DBA Verizon Wireless
(331) 318-	Landline	Lemont	Local Access LLC
(331) 330-	Landline	Oswego	Cricket Communications
(331) 332-	Wireless	Naperville	Cricket Communications
(331) 333-	Wireless	Naperville	Cricket Communications
(331) 422-	Landline	Saint Charles	Level 3 Communications
(331) 425-	Wireless	Aurora	T-mobile Usa
(331) 431-	Wireless	Aurora	Bandwidth.com Clec
(331) 442-	Wireless	Saint Charles	Cellco Partnership DBA Verizon Wireless
(331) 444-	Landline	Naperville	Cellco Partnership DBA Verizon Wireless
(331) 452-	Wireless	Aurora	Cellco Partnership DBA Verizon Wireless
(331) 454-	Wireless	Aurora	Cricket Communications
(331) 456-	Landline	Roselle	First Communications LLC
(331) 457-	Wireless	Naperville	Cellco Partnership DBA Verizon Wireless
(331) 462-	Landline	Lombard	Xo Illinois
(331) 465-	Wireless	West Chicago	New Cingular Wireless PCS
(331) 472-	Wireless	Naperville	T-mobile Usa
(331) 481-	Wireless	Downers Grove	Cellco Partnership DBA Verizon Wireless
(331) 551-	Wireless	Lombard	Cricket Communications
(331) 575-	Wireless	Aurora	Sprint Spectrum L.p.
(331) 588-	Wireless	Saint Charles	New Cingular Wireless PCS
(331) 625-	Wireless	Downers Grove	Cellco Partnership DBA Verizon Wireless
(331) 642-	Wireless	Elmhurst	Bandwidth.com Clec
(331) 643-	Wireless	Aurora	Sprint Spectrum L.p.
(331) 645-	Wireless	Elmhurst	Sprint Spectrum L.p.
(331) 684-	Landline	Aurora	Sigecom
(331) 702-	Landline	Naperville	Mci Worldcom Communications
(331) 703-	Wireless	West Chicago	T-mobile Usa
(331) 725-	Landline	Oswego	New Cingular Wireless PCS
(331) 777-	Landline	Downers Grove	Cellco Partnership DBA Verizon Wireless
(331) 801-	Unknown		Teleport Communications America
(331) 803-	Landline	Lemont	Peerless Network Of Illinois
(331) 825-	Unknown		Digital Network Access Communications
(331) 826-	Wireless	Elmhurst	Sprint Spectrum L.p.
(331) 888-	Landline	Warrenville	Peerless Network Of Illinois
(331) 903-	Unknown		Sbc Internet Services
(331) 999-	Landline	Oswego	Bandwidth.com Clec