NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

GLENDALE prefixes in area code 747

NANPA records 26 assigned NXX blocks to rate center GLENDALE in area code 747, 10.0% of the 260 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. 12 holders hold those blocks, the largest being T-MOBILE USA, INC. (7), ONVOY, LLC - CA (5), FRACTEL, LLC (3). The earliest assignment on record here is 2013-02-01 and the most recent 2024-08-30. 26 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.

26 assigned blocks – 10% of 747
12 holders of record
26 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
747-215 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2015-12-07 yes yes
747-221 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA 2013-02-01 yes yes
747-228 CONNECTTO COMMUNICATIONS, INC. - CA 2014-02-28 yes yes
747-231 T-Mobile T-MOBILE USA, INC. 2014-11-07 yes yes
747-240 T-Mobile T-MOBILE USA, INC. 2017-06-08 yes yes
747-257 T-Mobile T-MOBILE USA, INC. 2016-08-12 yes yes
747-270 BLUIP, INC. 2018-01-29 yes yes
747-272 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA 2015-07-20 yes yes
747-273 AT&T NEW CINGULAR WIRELESS PCS, LLC 2016-03-03 yes yes
747-286 T-Mobile METROPCS NETWORKS, LLC 2019-01-22 yes yes
747-297 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2020-10-05 yes yes
747-306 T-Mobile T-MOBILE USA, INC. 2021-12-08 yes yes
747-307 Onvoy ONVOY, LLC - CA 2020-06-16 yes yes
747-310 Onvoy ONVOY, LLC - CA 2023-08-11 yes yes
747-330 UTILITY TELECOM GROUP, LLC - CA 2021-08-31 yes yes
747-331 T-Mobile T-MOBILE USA, INC. 2023-01-19 yes yes
747-338 Onvoy ONVOY, LLC - CA 2022-09-08 yes yes
747-351 Onvoy ONVOY, LLC - CA 2024-01-24 yes yes
747-361 T-Mobile T-MOBILE USA, INC. 2024-04-12 yes yes
747-372 T-Mobile T-MOBILE USA, INC. 2024-08-30 yes yes
747-441 Onvoy ONVOY, LLC - CA 2021-12-09 yes yes
747-528 TON80 COMMUNICATIONS, LLC 2021-02-02 yes yes
747-566 FRACTEL, LLC 2021-07-16 yes yes
747-609 AT&T NEW CINGULAR WIRELESS PCS, LLC 2017-11-08 yes yes
747-688 FRACTEL, LLC 2021-01-27 yes yes
747-758 FRACTEL, LLC 2020-01-13 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

HolderBrandBlocksShare here
T-MOBILE USA, INC. T-Mobile 7 26.9%
ONVOY, LLC - CA Onvoy 5 19.2%
FRACTEL, LLC – 3 11.5%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 2 7.7%
NEW CINGULAR WIRELESS PCS, LLC AT&T 2 7.7%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 1 3.8%
CONNECTTO COMMUNICATIONS, INC. - CA – 1 3.8%
BLUIP, INC. – 1 3.8%
METROPCS NETWORKS, LLC T-Mobile 1 3.8%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 1 3.8%
UTILITY TELECOM GROUP, LLC - CA – 1 3.8%
TON80 COMMUNICATIONS, LLC – 1 3.8%

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 GLENDALE in area code 747?

26 blocks: 215, 221, 228, 231, 240, 257, 270, 272, 273, 286, 297, 306 and 14 more, all listed in the table above.

Which carriers have numbers in GLENDALE?

T-MOBILE USA, INC. (7 blocks), ONVOY, LLC - CA (5 blocks), FRACTEL, LLC (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - CA (2 blocks), NEW CINGULAR WIRELESS PCS, LLC (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (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.

Other rate centers in 747

All 260 prefixes in 747