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| npa-nxx | State | Company | FRN | RMD | OCN | Rate Center | CLLI | Assign Date | Misc |
| 916-509 | CA | CITIZENS TELECOM CA. DBA FRONTIER COM OF CA (Frontier Communications) | N/A | 2308 | ELK GROVE | EKGVCAXGDS4 | 09/27/2007 | Prefix Type: ICO Switch Name: ELK GROVE Switch Type: N/A LATA: Sacramento CA (726) Tandem: N/A 🔧 Explore Switch(CLLI: EKGVCAXGDS4)) | |
| 916-509 is split into 1,000-number blocks - detail below | |||||||||
| 916-509-4XXX | CA | CITIZENS TELECOM CA. DBA FRONTIER COM OF CA (Frontier Communications) | N/A | 2308 | ELK GROVE | EKGVCAXGDS4 | 09/27/2007 | Prefix Type: ICO Switch Name: ELK GROVE Switch Type: N/A LATA: Sacramento CA (726) Tandem: N/A 🔧 Explore Switch(CLLI: EKGVCAXGDS4)) |