NORWALK prefixes in area code 203
NANPA records 60 assigned NXX blocks to rate center NORWALK in area code 203, 7.7% 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. 13 holders hold those blocks, the largest being SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (21), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (8), OMNIPOINT COMMUNICATIONS, INC. - CT (6). The earliest assignment on record here is 2001-01-30 and the most recent 2011-05-25. 34 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 419, 475, 562, 567 – 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 |
|---|---|---|---|---|
| 203-229 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-246 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | – | yes | yes |
| 203-247 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | – | no | yes |
| 203-286 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 203-295 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | – | yes | yes |
| 203-299 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | yes | yes |
| 203-354 | Altice CABLEVISION LIGHTPATH, INC. - CT | – | yes | yes |
| 203-398 | Spok SPOK, INC. | – | no | yes |
| 203-434 | T-Mobile OMNIPOINT COMMUNICATIONS, INC. - CT | – | no | yes |
| 203-505 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | – | yes | yes |
| 203-515 | T-Mobile OMNIPOINT COMMUNICATIONS, INC. - CT | – | yes | yes |
| 203-523 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CT | – | yes | yes |
| 203-593 | Spok SPOK, INC. | – | no | yes |
| 203-604 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CT | 2001-03-14 | yes | yes |
| 203-613 | T-Mobile METROPCS, INC. | – | yes | yes |
| 203-642 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | – | yes | yes |
| 203-644 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | – | yes | yes |
| 203-663 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 203-722 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | – | no | yes |
| 203-750 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-803 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | – | yes | yes |
| 203-807 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2001-01-30 | yes | yes |
| 203-810 | Altice CABLEVISION LIGHTPATH, INC. - CT | 2001-07-27 | yes | yes |
| 203-818 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | – | yes | yes |
| 203-820 | T-Mobile METROPCS, INC. | – | yes | yes |
| 203-822 | AT&T AT&T - LOCAL | – | yes | yes |
| 203-829 | T-Mobile OMNIPOINT COMMUNICATIONS, INC. - CT | – | yes | yes |
| 203-831 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-835 | Spok SPOK, INC. | – | no | yes |
| 203-838 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-839 | Spok SPOK, INC. | – | no | yes |
| 203-840 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-842 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CT | – | yes | yes |
| 203-845 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-846 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-847 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-849 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-851 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | yes | yes |
| 203-852 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-853 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-854 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-855 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-856 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | – | no | yes |
| 203-857 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | yes | yes |
| 203-858 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | – | no | yes |
| 203-866 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-899 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | no | yes |
| 203-904 | T-Mobile OMNIPOINT COMMUNICATIONS, INC. - CT | – | yes | yes |
| 203-919 | T-Mobile OMNIPOINT COMMUNICATIONS, INC. - CT | – | yes | yes |
| 203-939 | CSC VOICE, LLC | 2008-06-25 | yes | yes |
| 203-943 | T-Mobile OMNIPOINT COMMUNICATIONS, INC. - CT | – | yes | yes |
| 203-945 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | yes | yes |
| 203-952 | T-Mobile METROPCS, INC. | – | yes | yes |
| 203-956 | Altice CABLEVISION LIGHTPATH, INC. - CT | 2001-01-30 | yes | yes |
| 203-957 | CSC VOICE, LLC | 2011-05-25 | yes | yes |
| 203-963 | AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | – | yes | yes |
| 203-970 | Altice CABLEVISION LIGHTPATH, INC. - CT | 2011-04-04 | yes | yes |
| 203-981 | T-Mobile METROPCS, INC. | – | yes | yes |
| 203-984 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | – | no | yes |
| 203-991 | 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
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | AT&T | 21 | 35% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | Verizon | 8 | 13.3% |
| OMNIPOINT COMMUNICATIONS, INC. - CT | T-Mobile | 6 | 10% |
| CABLEVISION LIGHTPATH, INC. - CT | Altice | 4 | 6.7% |
| SPOK, INC. | Spok | 4 | 6.7% |
| METROPCS, INC. | T-Mobile | 4 | 6.7% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | Verizon | 3 | 5% |
| PAETEC ITEL, LLC | Windstream | 2 | 3.3% |
| LEVEL 3 COMMUNICATIONS, LLC - CT | Lumen | 2 | 3.3% |
| NEW CINGULAR WIRELESS PCS, LLC - DC | AT&T | 2 | 3.3% |
| CSC VOICE, LLC | – | 2 | 3.3% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CT | AT&T | 1 | 1.7% |
| AT&T - LOCAL | AT&T | 1 | 1.7% |
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 NORWALK in area code 203?
60 blocks: 229, 246, 247, 286, 295, 299, 354, 398, 434, 505, 515, 523 and 48 more, all listed in the table above.
Which carriers have numbers in NORWALK?
SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (21 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (8 blocks), OMNIPOINT COMMUNICATIONS, INC. - CT (6 blocks), CABLEVISION LIGHTPATH, INC. - CT (4 blocks), SPOK, INC. (4 blocks), METROPCS, INC. (4 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is NORWALK 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.