ONEKAMA prefixes in area code 231
NANPA records 4 assigned NXX blocks to rate center ONEKAMA in area code 231, 0.7% of the 572 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. 4 holders hold those blocks, the largest being SPOK, INC. (1), BANDWIDTH.COM CLEC, LLC - MI (1), KALEVA TELEPHONE COMPANY - MI (1). The earliest assignment on record here is 2008-06-03 and the most recent 2021-08-26. 3 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 |
|---|---|---|---|---|
| 231-255 | Spok SPOK, INC. | – | no | yes |
| 231-379 | Bandwidth BANDWIDTH.COM CLEC, LLC - MI | 2021-08-26 | yes | yes |
| 231-508 | KALEVA TELEPHONE COMPANY - MI | 2008-06-03 | yes | yes |
| 231-889 | AT&T MICHIGAN BELL TEL CO | – | 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 |
|---|---|---|---|
| SPOK, INC. | Spok | 1 | 25% |
| BANDWIDTH.COM CLEC, LLC - MI | Bandwidth | 1 | 25% |
| KALEVA TELEPHONE COMPANY - MI | – | 1 | 25% |
| MICHIGAN BELL TEL CO | AT&T | 1 | 25% |
Frequently asked
Which prefixes belong to ONEKAMA in area code 231?
4 blocks: 255, 379, 508, 889. The table above gives the holder of each.
Which carriers have numbers in ONEKAMA?
SPOK, INC. (1 block), BANDWIDTH.COM CLEC, LLC - MI (1 block), KALEVA TELEPHONE COMPANY - MI (1 block), MICHIGAN BELL TEL CO (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is ONEKAMA 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.