CALUMET prefixes in area code 906
NANPA records 5 assigned NXX blocks to rate center CALUMET in area code 906, 1.4% of the 360 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 MICHIGAN BELL TEL CO (2), RANGE TELECOMMUNICATIONS (1), NEW CINGULAR WIRELESS PCS, LLC - IL (1). The earliest assignment on record here is 2001-05-14 and the most recent 2018-06-07. 4 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 code 405 – 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 |
|---|---|---|---|---|
| 906-303 | RANGE TELECOMMUNICATIONS | – | no | yes |
| 906-337 | AT&T MICHIGAN BELL TEL CO | – | yes | yes |
| 906-369 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 906-729 | Vonage VONAGE AMERICA LLC | 2018-06-07 | yes | yes |
| 906-934 | AT&T MICHIGAN BELL TEL CO | 2001-05-14 | 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 | 40% |
| RANGE TELECOMMUNICATIONS | – | 1 | 20% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 1 | 20% |
| VONAGE AMERICA LLC | Vonage | 1 | 20% |
Frequently asked
Which prefixes belong to CALUMET in area code 906?
5 blocks: 303, 337, 369, 729, 934. The table above gives the holder of each.
Which carriers have numbers in CALUMET?
MICHIGAN BELL TEL CO (2 blocks), RANGE TELECOMMUNICATIONS (1 block), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), VONAGE AMERICA LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is CALUMET 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.