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

WILLIMNTIC prefixes in area code 860

NANPA records 19 assigned NXX blocks to rate center WILLIMNTIC in area code 860, 2.4% of the 783 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. 7 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (6), SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (5), NEW CINGULAR WIRELESS PCS, LLC - DC (3). The earliest assignment on record here is 2002-04-23 and the most recent 2014-10-01. 13 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 959 – overlay codes cover the same geography, so a rate center is served by all of them.

19 assigned blocks – 2.4% of 860
7 holders of record
13 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
860-207 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 2013-02-27 yes yes
860-208 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC – no yes
860-234 T-Mobile METROPCS, INC. – yes yes
860-336 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CT – yes yes
860-377 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT – no yes
860-423 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-428 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT – no yes
860-450 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
860-455 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
860-456 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-465 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
860-576 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 2008-04-14 yes yes
860-617 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC – no yes
860-634 T-Mobile OMNIPOINT COMMUNICATIONS, INC. - CT – yes yes
860-771 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2010-09-21 yes yes
860-786 Lumen LEVEL 3 COMMUNICATIONS, LLC - CT – yes yes
860-931 T-Mobile OMNIPOINT COMMUNICATIONS, INC. - CT 2014-10-01 yes yes
860-933 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 2002-04-23 yes yes
860-942 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT – 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT Verizon 6 31.6%
SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT AT&T 5 26.3%
NEW CINGULAR WIRELESS PCS, LLC - DC AT&T 3 15.8%
OMNIPOINT COMMUNICATIONS, INC. - CT T-Mobile 2 10.5%
METROPCS, INC. T-Mobile 1 5.3%
TELEPORT COMMUNICATIONS AMERICA, LLC - CT AT&T 1 5.3%
LEVEL 3 COMMUNICATIONS, LLC - CT Lumen 1 5.3%

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 WILLIMNTIC in area code 860?

19 blocks: 207, 208, 234, 336, 377, 423, 428, 450, 455, 456, 465, 576 and 7 more, all listed in the table above.

Which carriers have numbers in WILLIMNTIC?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (6 blocks), SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (5 blocks), NEW CINGULAR WIRELESS PCS, LLC - DC (3 blocks), OMNIPOINT COMMUNICATIONS, INC. - CT (2 blocks), METROPCS, INC. (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - CT (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is WILLIMNTIC 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 860

All 783 prefixes in 860