npa-nxx | State | Company | OCN | Rate Center | CLLI | Assign Date | Misc |
773-686 | IL | ILLINOIS BELL TEL CO (AT&T) | 9329 | CHICGOZN11 | CHCGILOHDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: CHCG OHARE Switch Type: DMS100 LATA: Chicago IL METRO (358) Tandem: CHCGILWB55T Detailed Switch Info |