NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

SUNAPEE prefixes in area code 603

NANPA records 5 assigned NXX blocks to rate center SUNAPEE in area code 603, 0.7% of the 752 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 5 holders hold those blocks, the largest being TDS METROCOM, LLC (1), UNITED STATES CELLULAR - NH (1), CONSOLIDATED COMM OF NO. NEW ENGLAND-NH (1). 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

5 assigned blocks – 0.7% of 603
5 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
603-414 TDS TDS METROCOM, LLC – yes yes
603-454 UNITED STATES CELLULAR - NH – yes yes
603-763 Consolidated CONSOLIDATED COMM OF NO. NEW ENGLAND-NH – yes yes
603-829 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH – yes yes
603-873 Lumen LEVEL 3 COMMUNICATIONS, LLC - NH – yes yes

The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.

Who holds the blocks

HolderBrandBlocksShare here
TDS METROCOM, LLC TDS 1 20%
UNITED STATES CELLULAR - NH – 1 20%
CONSOLIDATED COMM OF NO. NEW ENGLAND-NH Consolidated 1 20%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH Verizon 1 20%
LEVEL 3 COMMUNICATIONS, LLC - NH Lumen 1 20%

Frequently asked

Which prefixes belong to SUNAPEE in area code 603?

5 blocks: 414, 454, 763, 829, 873. The table above gives the holder of each.

Which carriers have numbers in SUNAPEE?

TDS METROCOM, LLC (1 block), UNITED STATES CELLULAR - NH (1 block), CONSOLIDATED COMM OF NO. NEW ENGLAND-NH (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH (1 block), LEVEL 3 COMMUNICATIONS, LLC - NH (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is SUNAPEE a city?

It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.

Other rate centers in 603

All 752 prefixes in 603