GLENDALE prefixes in area code 817
NANPA records 64 assigned NXX blocks to rate center GLENDALE in area code 817, 8.2% 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. 9 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - IL (45), SOUTHWESTERN BELL (9), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (2). The earliest assignment on record here is 2002-02-21 and the most recent 2026-01-29. 31 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 458, 541, 682, 702 – 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 |
|---|---|---|---|---|
| 817-201 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2004-10-04 | yes | yes |
| 817-223 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-228 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-229 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-253 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-266 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-269 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-316 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 817-319 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-343 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-360 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-372 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2004-10-04 | yes | yes |
| 817-395 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 817-429 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 817-446 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 817-451 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 817-454 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-457 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 817-475 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-480 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-492 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 817-496 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 817-507 | Onvoy ONVOY, LLC - TX | – | yes | yes |
| 817-564 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 817-584 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2005-01-14 | yes | yes |
| 817-586 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2002-08-07 | yes | yes |
| 817-614 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-647 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 817-653 | AT&T AT&T ENTERPRISES, LLC | 2006-01-13 | yes | yes |
| 817-654 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 817-682 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2007-02-23 | yes | yes |
| 817-687 | Onvoy ONVOY, LLC - TX | – | yes | yes |
| 817-688 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-692 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-709 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 817-713 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-718 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-12-18 | yes | yes |
| 817-727 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2002-02-21 | yes | yes |
| 817-733 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2004-10-04 | yes | yes |
| 817-734 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | yes | yes |
| 817-739 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-01-16 | yes | yes |
| 817-781 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-851 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-08-21 | yes | yes |
| 817-879 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-08-21 | yes | yes |
| 817-880 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | – | yes | yes |
| 817-888 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2007-02-23 | yes | yes |
| 817-889 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2007-02-23 | yes | yes |
| 817-897 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-03-02 | yes | yes |
| 817-925 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-929 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-930 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 817-932 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 817-943 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2026-01-29 | yes | yes |
| 817-944 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-965 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-01-16 | yes | yes |
| 817-980 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-981 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2025-11-05 | yes | yes |
| 817-988 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-991 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-992 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 817-994 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-995 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2004-10-04 | yes | yes |
| 817-996 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 817-999 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | 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 |
|---|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 45 | 70.3% |
| SOUTHWESTERN BELL | AT&T | 9 | 14.1% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 2 | 3.1% |
| ONVOY, LLC - TX | Onvoy | 2 | 3.1% |
| LEVEL 3 COMMUNICATIONS, LLC - TX | Lumen | 2 | 3.1% |
| PAETEC ITEL, LLC | Windstream | 1 | 1.6% |
| AT&T ENTERPRISES, LLC | AT&T | 1 | 1.6% |
| GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | 1 | 1.6% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TX | AT&T | 1 | 1.6% |
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 GLENDALE in area code 817?
64 blocks: 201, 223, 228, 229, 253, 266, 269, 316, 319, 343, 360, 372 and 52 more, all listed in the table above.
Which carriers have numbers in GLENDALE?
NEW CINGULAR WIRELESS PCS, LLC - IL (45 blocks), SOUTHWESTERN BELL (9 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (2 blocks), ONVOY, LLC - TX (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - TX (2 blocks), PAETEC ITEL, 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 GLENDALE 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.