FAIRFIELD prefixes in area code 203
NANPA records 15 assigned NXX blocks to rate center FAIRFIELD in area code 203, 1.9% 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. 7 holders hold those blocks, the largest being SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (5), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (4), LEVEL 3 COMMUNICATIONS, LLC - CT (2). The earliest assignment on record here is 2004-02-20 and the most recent 2021-12-06. 10 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 207, 208, 223, 402 – overlay codes cover the same geography, so a rate center is served by all of them.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 203-254 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-255 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-256 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-259 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-292 | Altice CABLEVISION LIGHTPATH, INC. - CT | – | yes | yes |
| 203-307 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | 2005-01-31 | yes | yes |
| 203-319 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-418 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CT | – | yes | yes |
| 203-480 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | – | yes | yes |
| 203-659 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 203-670 | T-Mobile OMNIPOINT COMMUNICATIONS, INC. - CT | 2021-12-06 | yes | yes |
| 203-692 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CT | – | yes | yes |
| 203-763 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CT | – | yes | yes |
| 203-844 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | 2004-08-16 | yes | yes |
| 203-955 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | 2004-02-20 | 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
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | AT&T | 5 | 33.3% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | Verizon | 4 | 26.7% |
| LEVEL 3 COMMUNICATIONS, LLC - CT | Lumen | 2 | 13.3% |
| CABLEVISION LIGHTPATH, INC. - CT | Altice | 1 | 6.7% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CT | AT&T | 1 | 6.7% |
| PAETEC ITEL, LLC | Windstream | 1 | 6.7% |
| OMNIPOINT COMMUNICATIONS, INC. - CT | T-Mobile | 1 | 6.7% |
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 FAIRFIELD in area code 203?
15 blocks: 254, 255, 256, 259, 292, 307, 319, 418, 480, 659, 670, 692 and 3 more, all listed in the table above.
Which carriers have numbers in FAIRFIELD?
SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (5 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (4 blocks), LEVEL 3 COMMUNICATIONS, LLC - CT (2 blocks), CABLEVISION LIGHTPATH, INC. - CT (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - CT (1 block), PAETEC ITEL, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is FAIRFIELD 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.