TOOMSUBA prefixes in area code 601
NANPA records 4 assigned NXX blocks to rate center TOOMSUBA in area code 601, 0.5% of the 783 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 NEW CINGULAR WIRELESS PCS, LLC - GA (1), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1), COMCAST IP PHONE, LLC (1). The earliest assignment on record here is 2005-06-17 and the most recent 2026-06-18. 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 code 769 – 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 |
|---|---|---|---|---|
| 601-388 | AT&T NEW CINGULAR WIRELESS PCS, LLC - GA | 2026-06-18 | yes | yes |
| 601-632 | AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | – | no | yes |
| 601-637 | Comcast COMCAST IP PHONE, LLC | 2007-11-02 | no | yes |
| 601-851 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MS | 2005-06-17 | 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 |
|---|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - GA | AT&T | 1 | 25% |
| BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | AT&T | 1 | 25% |
| COMCAST IP PHONE, LLC | Comcast | 1 | 25% |
| LEVEL 3 COMMUNICATIONS, LLC - MS | Lumen | 1 | 25% |
Frequently asked
Which prefixes belong to TOOMSUBA in area code 601?
4 blocks: 388, 632, 637, 851. The table above gives the holder of each.
Which carriers have numbers in TOOMSUBA?
NEW CINGULAR WIRELESS PCS, LLC - GA (1 block), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1 block), COMCAST IP PHONE, LLC (1 block), LEVEL 3 COMMUNICATIONS, LLC - MS (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is TOOMSUBA 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.