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

MERIDEN prefixes in area code 475

NANPA records 7 assigned NXX blocks to rate center MERIDEN in area code 475, 2.4% of the 292 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. 6 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - DC (2), OMNIPOINT COMMUNICATIONS, INC. - CT (1), METROPCS, INC. (1). The earliest assignment on record here is 2014-12-24 and the most recent 2023-12-28. 7 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 203, 603, 712, 785 – overlay codes cover the same geography, so a rate center is served by all of them.

7 assigned blocks – 2.4% of 475
6 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
475-255 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2018-10-05 yes yes
475-307 T-Mobile OMNIPOINT COMMUNICATIONS, INC. - CT 2021-11-18 yes yes
475-343 T-Mobile METROPCS, INC. 2014-12-24 yes yes
475-347 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2023-12-28 yes yes
475-548 TON80 COMMUNICATIONS, LLC 2022-01-27 yes yes
475-688 FRACTEL, LLC 2020-07-21 yes yes
475-775 Onvoy ONVOY, LLC - CT 2016-02-05 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
NEW CINGULAR WIRELESS PCS, LLC - DC AT&T 2 28.6%
OMNIPOINT COMMUNICATIONS, INC. - CT T-Mobile 1 14.3%
METROPCS, INC. T-Mobile 1 14.3%
TON80 COMMUNICATIONS, LLC – 1 14.3%
FRACTEL, LLC – 1 14.3%
ONVOY, LLC - CT Onvoy 1 14.3%

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 MERIDEN in area code 475?

7 blocks: 255, 307, 343, 347, 548, 688, 775. The table above gives the holder of each.

Which carriers have numbers in MERIDEN?

NEW CINGULAR WIRELESS PCS, LLC - DC (2 blocks), OMNIPOINT COMMUNICATIONS, INC. - CT (1 block), METROPCS, INC. (1 block), TON80 COMMUNICATIONS, LLC (1 block), FRACTEL, LLC (1 block), ONVOY, 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 MERIDEN 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 475

All 292 prefixes in 475