Illinois Phone Prefixes in 779-4XX Area Code

Phone Prefixes in the 779-4XX Area Code

Prefix Usage Primary City
(779) 444 Landline Wonder Lake
(779) 423 Landline Rockford
(779) 400 Landline Dekalb
(779) 475 Landline Beloit
Prefix Usage Primary City
(779) 429 Landline Wilmington
(779) 435 Landline Joliet
(779) 456 Wireless Joliet
(779) 432 Landline Sheffield

More 7XX Area Codes Phone Numbers