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

WINDSORLKS prefixes in area code 860

NANPA records 15 assigned NXX blocks to rate center WINDSORLKS in area code 860, 1.9% 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 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (6), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (3), PAETEC ITEL, LLC (2). 11 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

15 assigned blocks – 1.9% of 860
7 holders of record
11 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
860-254 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
860-292 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
860-370 Comcast COMCAST IP PHONE, LLC – yes yes
860-386 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
860-623 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-627 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-654 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-668 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-752 Windstream PAETEC ITEL, LLC – yes yes
860-758 Onvoy ONVOY, LLC - CT – yes yes
860-789 Lumen LEVEL 3 COMMUNICATIONS, LLC - CT – yes yes
860-804 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CT – yes yes
860-831 Windstream PAETEC ITEL, LLC – yes yes
860-901 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
860-903 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES 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
SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT AT&T 6 40%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 3 20%
PAETEC ITEL, LLC Windstream 2 13.3%
COMCAST IP PHONE, LLC Comcast 1 6.7%
ONVOY, LLC - CT Onvoy 1 6.7%
LEVEL 3 COMMUNICATIONS, LLC - CT Lumen 1 6.7%
TELEPORT COMMUNICATIONS AMERICA, LLC - CT AT&T 1 6.7%

Frequently asked

Which prefixes belong to WINDSORLKS in area code 860?

15 blocks: 254, 292, 370, 386, 623, 627, 654, 668, 752, 758, 789, 804 and 3 more, all listed in the table above.

Which carriers have numbers in WINDSORLKS?

SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (6 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (3 blocks), PAETEC ITEL, LLC (2 blocks), COMCAST IP PHONE, LLC (1 block), ONVOY, LLC - CT (1 block), LEVEL 3 COMMUNICATIONS, 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 WINDSORLKS 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