DETROIT prefixes in area code 903
NANPA records 3 assigned NXX blocks to rate center DETROIT in area code 903, 0.4% of the 771 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. 2 holders hold those blocks, the largest being VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW (2), T-MOBILE USA, INC. (1). The earliest assignment on record here is 2001-01-23 and the most recent 2015-02-18. 2 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, 430, 503, 659 – 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 |
|---|---|---|---|---|
| 903-418 | Windstream VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW | 2015-02-18 | yes | yes |
| 903-491 | T-Mobile T-MOBILE USA, INC. | 2001-01-23 | yes | yes |
| 903-674 | Windstream VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW | – | 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 |
|---|---|---|---|
| VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW | Windstream | 2 | 66.7% |
| T-MOBILE USA, INC. | T-Mobile | 1 | 33.3% |
Frequently asked
Which prefixes belong to DETROIT in area code 903?
3 blocks: 418, 491, 674. The table above gives the holder of each.
Which carriers have numbers in DETROIT?
VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW (2 blocks), T-MOBILE USA, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is DETROIT 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.