GREENWICH prefixes in area code 203
NANPA records 27 assigned NXX blocks to rate center GREENWICH in area code 203, 3.4% 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. 10 holders hold those blocks, the largest being VERIZON NEW YORK, INC. (11), CABLEVISION LIGHTPATH, INC. - CT (4), CSC VOICE, LLC (3). The earliest assignment on record here is 2001-03-14 and the most recent 2024-09-18. 18 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 401, 419, 475, 518 – 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 |
|---|---|---|---|---|
| 203-203 | Onvoy ONVOY, LLC - CT | 2024-09-18 | yes | yes |
| 203-302 | AT&T TC SYSTEMS, INC. - NY | – | yes | yes |
| 203-340 | Altice CABLEVISION LIGHTPATH, INC. - CT | 2003-08-19 | yes | yes |
| 203-413 | Windstream PAETEC ITEL, LLC | – | no | yes |
| 203-422 | Verizon VERIZON NEW YORK, INC. | – | yes | yes |
| 203-485 | Altice CABLEVISION LIGHTPATH, INC. - CT | – | yes | yes |
| 203-489 | Altice CABLEVISION LIGHTPATH, INC. - CT | 2011-05-25 | yes | yes |
| 203-496 | T-Mobile METROPCS, INC. | – | yes | yes |
| 203-542 | AT&T AT&T - LOCAL | – | yes | yes |
| 203-618 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 203-622 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 203-625 | Verizon VERIZON NEW YORK, INC. | – | yes | yes |
| 203-629 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 203-661 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 203-717 | CSC VOICE, LLC | 2011-01-28 | yes | yes |
| 203-742 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | 2003-04-10 | yes | yes |
| 203-769 | Verizon VERIZON NEW YORK, INC. | – | yes | yes |
| 203-861 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 203-862 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 203-863 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 203-869 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 203-900 | CSC VOICE, LLC | 2012-02-24 | yes | yes |
| 203-930 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CT | 2001-03-14 | yes | yes |
| 203-971 | Altice CABLEVISION LIGHTPATH, INC. - CT | – | yes | yes |
| 203-983 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 203-987 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CT | 2001-03-30 | yes | yes |
| 203-992 | CSC VOICE, LLC | 2006-05-12 | 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 |
|---|---|---|---|
| VERIZON NEW YORK, INC. | Verizon | 11 | 40.7% |
| CABLEVISION LIGHTPATH, INC. - CT | Altice | 4 | 14.8% |
| CSC VOICE, LLC | – | 3 | 11.1% |
| PAETEC ITEL, LLC | Windstream | 2 | 7.4% |
| LEVEL 3 COMMUNICATIONS, LLC - CT | Lumen | 2 | 7.4% |
| ONVOY, LLC - CT | Onvoy | 1 | 3.7% |
| TC SYSTEMS, INC. - NY | AT&T | 1 | 3.7% |
| METROPCS, INC. | T-Mobile | 1 | 3.7% |
| AT&T - LOCAL | AT&T | 1 | 3.7% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | Verizon | 1 | 3.7% |
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 GREENWICH in area code 203?
27 blocks: 203, 302, 340, 413, 422, 485, 489, 496, 542, 618, 622, 625 and 15 more, all listed in the table above.
Which carriers have numbers in GREENWICH?
VERIZON NEW YORK, INC. (11 blocks), CABLEVISION LIGHTPATH, INC. - CT (4 blocks), CSC VOICE, LLC (3 blocks), PAETEC ITEL, LLC (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - CT (2 blocks), 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 GREENWICH 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.