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

MIDDLETOWN prefixes in area code 860

NANPA records 28 assigned NXX blocks to rate center MIDDLETOWN in area code 860, 3.6% 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. 9 holders hold those blocks, the largest being SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (14), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (4), PAETEC ITEL, LLC (3). The earliest assignment on record here is 2001-05-01 and the most recent 2002-05-30. 20 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 223, 227, 240, 283 – overlay codes cover the same geography, so a rate center is served by all of them.

28 assigned blocks – 3.6% of 860
9 holders of record
20 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
860-262 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
860-301 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC – no yes
860-316 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
860-342 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
860-343 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-344 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-346 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-347 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-349 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
860-358 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
860-398 Lumen LEVEL 3 COMMUNICATIONS, LLC - CT – yes yes
860-613 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
860-632 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-635 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-636 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-638 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
860-685 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
860-704 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
860-740 Windstream PAETEC ITEL, LLC – yes yes
860-754 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
860-759 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2002-05-30 yes yes
860-788 Bandwidth BANDWIDTH.COM CLEC, LLC - CT – yes yes
860-807 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CT – yes yes
860-834 T-Mobile OMNIPOINT COMMUNICATIONS, INC. - CT 2001-05-01 yes yes
860-852 Windstream PAETEC ITEL, LLC – yes yes
860-854 Windstream PAETEC ITEL, LLC – yes yes
860-894 AT&T AT&T - LOCAL – yes yes
860-975 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 14 50%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 4 14.3%
PAETEC ITEL, LLC Windstream 3 10.7%
NEW CINGULAR WIRELESS PCS, LLC - DC AT&T 2 7.1%
LEVEL 3 COMMUNICATIONS, LLC - CT Lumen 1 3.6%
BANDWIDTH.COM CLEC, LLC - CT Bandwidth 1 3.6%
TELEPORT COMMUNICATIONS AMERICA, LLC - CT AT&T 1 3.6%
OMNIPOINT COMMUNICATIONS, INC. - CT T-Mobile 1 3.6%
AT&T - LOCAL AT&T 1 3.6%

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 MIDDLETOWN in area code 860?

28 blocks: 262, 301, 316, 342, 343, 344, 346, 347, 349, 358, 398, 613 and 16 more, all listed in the table above.

Which carriers have numbers in MIDDLETOWN?

SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (14 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (4 blocks), PAETEC ITEL, LLC (3 blocks), NEW CINGULAR WIRELESS PCS, LLC - DC (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - CT (1 block), BANDWIDTH.COM CLEC, 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 MIDDLETOWN 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