DAUPHIN IS prefixes in area code 251
NANPA records 4 assigned NXX blocks to rate center DAUPHIN IS in area code 251, 0.8% of the 528 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 ONVOY, LLC - AL (3), BRIGHTSPEED OF ALABAMA, LLC - NORTHERN (1). The earliest assignment on record here is 2018-08-29 and the most recent 2021-11-04. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 251-313 | Onvoy ONVOY, LLC - AL | 2018-08-29 | yes | yes |
| 251-397 | Onvoy ONVOY, LLC - AL | 2021-01-13 | yes | yes |
| 251-519 | Onvoy ONVOY, LLC - AL | 2021-11-04 | yes | yes |
| 251-861 | Brightspeed BRIGHTSPEED OF ALABAMA, LLC - NORTHERN | – | 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 |
|---|---|---|---|
| ONVOY, LLC - AL | Onvoy | 3 | 75% |
| BRIGHTSPEED OF ALABAMA, LLC - NORTHERN | Brightspeed | 1 | 25% |
Frequently asked
Which prefixes belong to DAUPHIN IS in area code 251?
4 blocks: 313, 397, 519, 861. The table above gives the holder of each.
Which carriers have numbers in DAUPHIN IS?
ONVOY, LLC - AL (3 blocks), BRIGHTSPEED OF ALABAMA, LLC - NORTHERN (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is DAUPHIN IS 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.