LITTLETON — NH
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| LEVEL 3 COMMUNICATIONS, LLC - NH | 4017 | 1 |
| CONSOLIDATED COMM OF NO. NEW ENGLAND-NH | 5113 | 1 |
| UNITED STATES CELLULAR - NH | 6290 | 1 |
| BELL ATLANTIC MOBILE, INC | 6386 | 1 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH | 7778 | 1 |