| npa-nxx | State | Company | OCN | Rate Center | CLLI | Assign Date | Misc |
| 734-475 | MI | MICHIGAN BELL TEL CO (AT&T) | 9323 | CHELSEA | CHLSMIMNDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: CHELSEA Switch Type: DMS10 LATA: Detroit MI (340) Tandem: ANARMIMN20T Detailed Switch Info |
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Last Updated: Wed Feb 19 03:57:45 2025