Oswego IL Area Code

State:
Area:
Postfix:
IL
Active:
Prefix Usage Carrier Introduced
(630) 383- Landline Mci Worldcom Communications Introduced 07/06/1997
(630) 551- Landline Ameritech Illinois Introduced 11/20/1998
(630) 554- Landline Ameritech Illinois Introduced 10/15/1996
(630) 608- Landline Level 3 Communications Introduced 11/20/1998
(630) 630- Landline First Communications LLC Introduced 06/27/2007
(630) 636- Landline First Communications LLC Introduced 04/11/2001