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

PELHAM prefixes in area code 603

NANPA records 3 assigned NXX blocks to rate center PELHAM in area code 603, 0.4% 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. 3 holders hold those blocks, the largest being BELL ATLANTIC MOBILE, INC (1), CONSOLIDATED COMM OF NO. NEW ENGLAND-NH (1), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH (1). The earliest assignment on record here is 2001-08-08 and the most recent 2001-08-08. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 229, 931 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 0.4% of 603
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
603-508 BELL ATLANTIC MOBILE, INC 2001-08-08 yes yes
603-635 Consolidated CONSOLIDATED COMM OF NO. NEW ENGLAND-NH – yes yes
603-751 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES 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
BELL ATLANTIC MOBILE, INC – 1 33.3%
CONSOLIDATED COMM OF NO. NEW ENGLAND-NH Consolidated 1 33.3%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH Verizon 1 33.3%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to PELHAM in area code 603?

3 blocks: 508, 635, 751. The table above gives the holder of each.

Which carriers have numbers in PELHAM?

BELL ATLANTIC MOBILE, INC (1 block), CONSOLIDATED COMM OF NO. NEW ENGLAND-NH (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES 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 PELHAM 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