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

WALLINGFD prefixes in area code 203

NANPA records 14 assigned NXX blocks to rate center WALLINGFD in area code 203, 1.8% of the 784 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 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (9), PAETEC ITEL, LLC (2), TELEPORT COMMUNICATIONS AMERICA, LLC - CT (1). The earliest assignment on record here is 2001-03-23 and the most recent 2001-03-23. 9 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 475, 712, 802 – overlay codes cover the same geography, so a rate center is served by all of them.

14 assigned blocks – 1.8% of 203
5 holders of record
9 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
203-265 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
203-269 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
203-284 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
203-294 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
203-303 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CT – yes yes
203-626 AT&T AT&T - LOCAL – yes yes
203-677 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
203-678 Windstream PAETEC ITEL, LLC – yes yes
203-679 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
203-697 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
203-741 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
203-774 Windstream PAETEC ITEL, LLC – yes yes
203-793 Lumen LEVEL 3 COMMUNICATIONS, LLC - CT 2001-03-23 yes yes
203-949 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no 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 9 64.3%
PAETEC ITEL, LLC Windstream 2 14.3%
TELEPORT COMMUNICATIONS AMERICA, LLC - CT AT&T 1 7.1%
AT&T - LOCAL AT&T 1 7.1%
LEVEL 3 COMMUNICATIONS, LLC - CT Lumen 1 7.1%

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 WALLINGFD in area code 203?

14 blocks: 265, 269, 284, 294, 303, 626, 677, 678, 679, 697, 741, 774 and 2 more, all listed in the table above.

Which carriers have numbers in WALLINGFD?

SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (9 blocks), PAETEC ITEL, LLC (2 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - CT (1 block), AT&T - LOCAL (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 WALLINGFD 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 203

All 784 prefixes in 203