CHELSEA prefixes in area code 734
NANPA records 9 assigned NXX blocks to rate center CHELSEA in area code 734, 1.3% of the 701 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 MICHIGAN BELL TEL CO (2), ONVOY, LLCV - MI (2), PAETEC ITEL, LLC (1). The earliest assignment on record here is 2001-12-06 and the most recent 2023-06-26. 8 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 205, 539, 617, 641 – 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 |
|---|---|---|---|---|
| 734-385 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 734-433 | AT&T MICHIGAN BELL TEL CO | – | yes | yes |
| 734-475 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-488 | Onvoy ONVOY, LLCV - MI | 2020-12-17 | yes | yes |
| 734-562 | Comcast COMCAST IP PHONE, LLC | – | yes | yes |
| 734-570 | Onvoy ONVOY, LLCV - MI | 2023-06-26 | yes | yes |
| 734-593 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI | – | yes | yes |
| 734-627 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | – | yes | yes |
| 734-719 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MI | 2001-12-06 | 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 |
|---|---|---|---|
| MICHIGAN BELL TEL CO | AT&T | 2 | 22.2% |
| ONVOY, LLCV - MI | Onvoy | 2 | 22.2% |
| PAETEC ITEL, LLC | Windstream | 1 | 11.1% |
| COMCAST IP PHONE, LLC | Comcast | 1 | 11.1% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MI | AT&T | 1 | 11.1% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | Verizon | 1 | 11.1% |
| LEVEL 3 COMMUNICATIONS, LLC - MI | Lumen | 1 | 11.1% |
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 CHELSEA in area code 734?
9 blocks: 385, 433, 475, 488, 562, 570, 593, 627, 719. The table above gives the holder of each.
Which carriers have numbers in CHELSEA?
MICHIGAN BELL TEL CO (2 blocks), ONVOY, LLCV - MI (2 blocks), PAETEC ITEL, LLC (1 block), COMCAST IP PHONE, LLC (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - MI (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is CHELSEA 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.