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

PLYMOUTH prefixes in area code 508

NANPA records 10 assigned NXX blocks to rate center PLYMOUTH in area code 508, 1.3% of the 749 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. 4 holders hold those blocks, the largest being VERIZON NEW ENGLAND INC. (6), TC SYSTEMS, INC. (2), NORFOLK COUNTY INTERNET, INC. (1). 5 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 207, 209, 252, 272 – overlay codes cover the same geography, so a rate center is served by all of them.

10 assigned blocks – 1.3% of 508
4 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
508-209 Verizon VERIZON NEW ENGLAND INC. – yes yes
508-224 Verizon VERIZON NEW ENGLAND INC. – no yes
508-442 NORFOLK COUNTY INTERNET, INC. – no yes
508-503 Lumen LEVEL 3 COMMUNICATIONS, LLC - MA – yes yes
508-591 AT&T TC SYSTEMS, INC. – yes yes
508-732 Verizon VERIZON NEW ENGLAND INC. – yes yes
508-746 Verizon VERIZON NEW ENGLAND INC. – no yes
508-747 Verizon VERIZON NEW ENGLAND INC. – no yes
508-830 Verizon VERIZON NEW ENGLAND INC. – no yes
508-927 AT&T TC SYSTEMS, INC. – 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
VERIZON NEW ENGLAND INC. Verizon 6 60%
TC SYSTEMS, INC. AT&T 2 20%
NORFOLK COUNTY INTERNET, INC. – 1 10%
LEVEL 3 COMMUNICATIONS, LLC - MA Lumen 1 10%

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 PLYMOUTH in area code 508?

10 blocks: 209, 224, 442, 503, 591, 732, 746, 747, 830, 927. The table above gives the holder of each.

Which carriers have numbers in PLYMOUTH?

VERIZON NEW ENGLAND INC. (6 blocks), TC SYSTEMS, INC. (2 blocks), NORFOLK COUNTY INTERNET, INC. (1 block), LEVEL 3 COMMUNICATIONS, LLC - MA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is PLYMOUTH 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 508

All 749 prefixes in 508