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

COHASSET prefixes in area code 781

NANPA records 5 assigned NXX blocks to rate center COHASSET in area code 781, 0.7% of the 769 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 LEVEL 3 COMMUNICATIONS, LLC - MA (1), PAETEC ITEL, LLC (1), VERIZON NEW ENGLAND INC. (1). The earliest assignment on record here is 2001-02-23 and the most recent 2001-02-23. 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 code 339 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.7% of 781
5 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
781-210 Lumen LEVEL 3 COMMUNICATIONS, LLC - MA – yes yes
781-236 Windstream PAETEC ITEL, LLC 2001-02-23 yes yes
781-383 Verizon VERIZON NEW ENGLAND INC. – yes yes
781-527 AT&T TC SYSTEMS, INC. – yes yes
781-923 Comcast COMCAST IP PHONE, LLC – 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
LEVEL 3 COMMUNICATIONS, LLC - MA Lumen 1 20%
PAETEC ITEL, LLC Windstream 1 20%
VERIZON NEW ENGLAND INC. Verizon 1 20%
TC SYSTEMS, INC. AT&T 1 20%
COMCAST IP PHONE, LLC Comcast 1 20%

Frequently asked

Which prefixes belong to COHASSET in area code 781?

5 blocks: 210, 236, 383, 527, 923. The table above gives the holder of each.

Which carriers have numbers in COHASSET?

LEVEL 3 COMMUNICATIONS, LLC - MA (1 block), PAETEC ITEL, LLC (1 block), VERIZON NEW ENGLAND INC. (1 block), TC SYSTEMS, INC. (1 block), COMCAST IP PHONE, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is COHASSET 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 781

All 769 prefixes in 781