MASON prefixes in area code 513
NANPA records 21 assigned NXX blocks to rate center MASON in area code 513, 2.7% of the 784 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 BRIGHTSPEED OF NORTHWEST OHIO, INC. (7), ONVOY, LLC - OH (4), CINCINNATI BELL EXTENDED TERRITORIES LLC - OH (3). The earliest assignment on record here is 2003-12-09 and the most recent 2023-03-01. 15 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 283, 304, 325, 517 – 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 |
|---|---|---|---|---|
| 513-204 | Altafiber CINCINNATI BELL EXTENDED TERRITORIES LLC - OH | 2003-12-09 | yes | yes |
| 513-229 | Altafiber CINCINNATI BELL EXTENDED TERRITORIES LLC - OH | – | yes | yes |
| 513-234 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | – | yes | yes |
| 513-336 | Brightspeed BRIGHTSPEED OF NORTHWEST OHIO, INC. | – | no | yes |
| 513-339 | Brightspeed BRIGHTSPEED OF NORTHWEST OHIO, INC. | – | no | yes |
| 513-398 | Brightspeed BRIGHTSPEED OF NORTHWEST OHIO, INC. | – | no | yes |
| 513-445 | Lumen LEVEL 3 COMMUNICATIONS, LLC - OH | 2005-12-22 | yes | yes |
| 513-459 | Brightspeed BRIGHTSPEED OF NORTHWEST OHIO, INC. | – | no | yes |
| 513-466 | Onvoy ONVOY, LLC - OH | 2016-02-26 | yes | yes |
| 513-486 | Lumen CENTURYLINK COMMUNICATIONS, LLC | 2013-06-28 | yes | yes |
| 513-492 | Lumen LEVEL 3 TELECOM OF OHIO, LLC - OH | – | yes | yes |
| 513-548 | Bandwidth BANDWIDTH.COM CLEC, LLC - OH | 2018-08-02 | yes | yes |
| 513-573 | Brightspeed BRIGHTSPEED OF NORTHWEST OHIO, INC. | – | no | yes |
| 513-622 | Brightspeed BRIGHTSPEED OF NORTHWEST OHIO, INC. | – | yes | yes |
| 513-637 | Onvoy ONVOY, LLC - OH | 2022-11-08 | yes | yes |
| 513-701 | Lumen LEVEL 3 TELECOM OF OHIO, LLC - OH | – | yes | yes |
| 513-754 | Brightspeed BRIGHTSPEED OF NORTHWEST OHIO, INC. | – | no | yes |
| 513-770 | Altafiber CINCINNATI BELL EXTENDED TERRITORIES LLC - OH | – | yes | yes |
| 513-848 | Onvoy ONVOY, LLC - OH | 2021-04-29 | yes | yes |
| 513-972 | Lumen LEVEL 3 COMMUNICATIONS, LLC - OH | 2012-12-26 | yes | yes |
| 513-994 | Onvoy ONVOY, LLC - OH | 2023-03-01 | 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 |
|---|---|---|---|
| BRIGHTSPEED OF NORTHWEST OHIO, INC. | Brightspeed | 7 | 33.3% |
| ONVOY, LLC - OH | Onvoy | 4 | 19% |
| CINCINNATI BELL EXTENDED TERRITORIES LLC - OH | Altafiber | 3 | 14.3% |
| LEVEL 3 COMMUNICATIONS, LLC - OH | Lumen | 2 | 9.5% |
| LEVEL 3 TELECOM OF OHIO, LLC - OH | Lumen | 2 | 9.5% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | Verizon | 1 | 4.8% |
| CENTURYLINK COMMUNICATIONS, LLC | Lumen | 1 | 4.8% |
| BANDWIDTH.COM CLEC, LLC - OH | Bandwidth | 1 | 4.8% |
Same rate center in other codes
Overlay codes cover the same geography, so one rate center is served by all of them.
Frequently asked
Which prefixes belong to MASON in area code 513?
21 blocks: 204, 229, 234, 336, 339, 398, 445, 459, 466, 486, 492, 548 and 9 more, all listed in the table above.
Which carriers have numbers in MASON?
BRIGHTSPEED OF NORTHWEST OHIO, INC. (7 blocks), ONVOY, LLC - OH (4 blocks), CINCINNATI BELL EXTENDED TERRITORIES LLC - OH (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - OH (2 blocks), LEVEL 3 TELECOM OF OHIO, LLC - OH (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH (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 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.