MASON CITY prefixes in area code 641
NANPA records 20 assigned NXX blocks to rate center MASON CITY in area code 641, 3.4% of the 584 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. 8 holders hold those blocks, the largest being QWEST CORPORATION (7), T-MOBILE USA, INC. (4), UNITED STATES CELLULAR - IA (3). The earliest assignment on record here is 2001-04-09 and the most recent 2024-03-12. 14 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 217, 308, 447 – 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 |
|---|---|---|---|---|
| 641-201 | T-Mobile METROPCS, INC. | 2001-04-09 | yes | yes |
| 641-210 | T-Mobile T-MOBILE USA, INC. | 2001-08-02 | yes | yes |
| 641-243 | Lumen LEVEL 3 COMMUNICATIONS, LLC - IA | 2009-10-26 | yes | yes |
| 641-255 | T-Mobile T-MOBILE USA, INC. | 2022-04-28 | yes | yes |
| 641-380 | Lumen QWEST CORPORATION | – | no | yes |
| 641-420 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | – | no | yes |
| 641-421 | Lumen QWEST CORPORATION | – | no | yes |
| 641-422 | Lumen QWEST CORPORATION | – | no | yes |
| 641-423 | Lumen QWEST CORPORATION | – | no | yes |
| 641-424 | Lumen QWEST CORPORATION | – | no | yes |
| 641-425 | UNITED STATES CELLULAR - IA | – | yes | yes |
| 641-428 | Lumen QWEST CORPORATION | 2010-08-18 | yes | yes |
| 641-430 | UNITED STATES CELLULAR - IA | – | yes | yes |
| 641-450 | NORTHLAND COMMUNICATIONS, INC. - IA | 2013-05-16 | yes | yes |
| 641-494 | Lumen QWEST CORPORATION | – | yes | yes |
| 641-512 | UNITED STATES CELLULAR - IA | – | yes | yes |
| 641-513 | Onvoy ONVOY, LLC - IA | 2024-03-12 | yes | yes |
| 641-530 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | – | yes | yes |
| 641-548 | T-Mobile T-MOBILE USA, INC. | 2018-03-06 | yes | yes |
| 641-903 | T-Mobile T-MOBILE USA, INC. | 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 |
|---|---|---|---|
| QWEST CORPORATION | Lumen | 7 | 35% |
| T-MOBILE USA, INC. | T-Mobile | 4 | 20% |
| UNITED STATES CELLULAR - IA | – | 3 | 15% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | Verizon | 2 | 10% |
| METROPCS, INC. | T-Mobile | 1 | 5% |
| LEVEL 3 COMMUNICATIONS, LLC - IA | Lumen | 1 | 5% |
| NORTHLAND COMMUNICATIONS, INC. - IA | – | 1 | 5% |
| ONVOY, LLC - IA | Onvoy | 1 | 5% |
Frequently asked
Which prefixes belong to MASON CITY in area code 641?
20 blocks: 201, 210, 243, 255, 380, 420, 421, 422, 423, 424, 425, 428 and 8 more, all listed in the table above.
Which carriers have numbers in MASON CITY?
QWEST CORPORATION (7 blocks), T-MOBILE USA, INC. (4 blocks), UNITED STATES CELLULAR - IA (3 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA (2 blocks), METROPCS, INC. (1 block), LEVEL 3 COMMUNICATIONS, LLC - IA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is MASON CITY 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.