MANSFIELD prefixes in area code 817
NANPA records 12 assigned NXX blocks to rate center MANSFIELD in area code 817, 1.5% of the 781 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 SOUTHWESTERN BELL (4), ONVOY, LLC - TX (2), LEVEL 3 COMMUNICATIONS, LLC - TX (1). 9 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, 272, 318, 417 – 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 |
|---|---|---|---|---|
| 817-225 | Onvoy ONVOY, LLC - TX | – | yes | yes |
| 817-405 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | – | yes | yes |
| 817-435 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 817-453 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 817-473 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 817-477 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 817-539 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 817-592 | AT&T AT&T ENTERPRISES, LLC | – | yes | yes |
| 817-728 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 817-779 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | – | yes | yes |
| 817-842 | Onvoy ONVOY, LLC - TX | – | yes | yes |
| 817-853 | MATRIX TELECOM, LLC. S/I/I TNCI - TX | – | no | 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 |
|---|---|---|---|
| SOUTHWESTERN BELL | AT&T | 4 | 33.3% |
| ONVOY, LLC - TX | Onvoy | 2 | 16.7% |
| LEVEL 3 COMMUNICATIONS, LLC - TX | Lumen | 1 | 8.3% |
| PAETEC ITEL, LLC | Windstream | 1 | 8.3% |
| AT&T ENTERPRISES, LLC | AT&T | 1 | 8.3% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 1 | 8.3% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TX | AT&T | 1 | 8.3% |
| MATRIX TELECOM, LLC. S/I/I TNCI - TX | – | 1 | 8.3% |
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 MANSFIELD in area code 817?
12 blocks: 225, 405, 435, 453, 473, 477, 539, 592, 728, 779, 842, 853. The table above gives the holder of each.
Which carriers have numbers in MANSFIELD?
SOUTHWESTERN BELL (4 blocks), ONVOY, LLC - TX (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - TX (1 block), PAETEC ITEL, LLC (1 block), AT&T ENTERPRISES, LLC (1 block), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is MANSFIELD 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.