npa-nxx | State | Company | OCN | Rate Center | CLLI | Assign Date | Misc |
312-596 | IL | TELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T) | 7136 | CHICGOZN01 | CHCGILCLDS7 | 00/00/0000 | Prefix Type: CLEC Switch Name: CHICAGO Switch Type: WECO 5ESS (Digital) LATA: Chicago IL METRO (358) Tandem: N/A Detailed Switch Info |