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

LAS VEGAS prefixes in area code 505

NANPA records 15 assigned NXX blocks to rate center LAS VEGAS in area code 505, 2.2% of the 685 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 ONVOY, LLC - NM (4), QWEST CORPORATION (3), T-MOBILE USA, INC. (2). The earliest assignment on record here is 2002-03-20 and the most recent 2024-03-21. 11 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 702, 725 – overlay codes cover the same geography, so a rate center is served by all of them.

15 assigned blocks – 2.2% of 505
8 holders of record
11 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
505-276 Onvoy ONVOY, LLC - NM 2009-07-14 yes yes
505-370 Onvoy ONVOY, LLC - NM 2019-01-23 yes yes
505-398 Lumen LEVEL 3 COMMUNICATIONS, LLC - NM 2012-11-16 yes yes
505-425 Lumen QWEST CORPORATION – no yes
505-426 Lumen QWEST CORPORATION – yes yes
505-429 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM – yes yes
505-434 PLATEAU TELECOMMUNICATIONS, INC. - NM 2012-01-09 no yes
505-451 T-Mobile T-MOBILE USA, INC. 2021-02-03 yes yes
505-454 Lumen QWEST CORPORATION – no yes
505-498 T-Mobile METROPCS, INC. 2021-10-13 yes yes
505-587 Onvoy ONVOY, LLC - NM 2016-03-03 yes yes
505-617 AT&T NEW CINGULAR WIRELESS PCS, LLC 2002-09-05 no yes
505-621 Onvoy ONVOY, LLC - NM 2024-03-21 yes yes
505-652 AT&T NEW CINGULAR WIRELESS PCS, LLC 2008-06-25 yes yes
505-718 T-Mobile T-MOBILE USA, INC. 2002-03-20 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
ONVOY, LLC - NM Onvoy 4 26.7%
QWEST CORPORATION Lumen 3 20%
T-MOBILE USA, INC. T-Mobile 2 13.3%
NEW CINGULAR WIRELESS PCS, LLC AT&T 2 13.3%
LEVEL 3 COMMUNICATIONS, LLC - NM Lumen 1 6.7%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM Verizon 1 6.7%
PLATEAU TELECOMMUNICATIONS, INC. - NM – 1 6.7%
METROPCS, INC. T-Mobile 1 6.7%

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 LAS VEGAS in area code 505?

15 blocks: 276, 370, 398, 425, 426, 429, 434, 451, 454, 498, 587, 617 and 3 more, all listed in the table above.

Which carriers have numbers in LAS VEGAS?

ONVOY, LLC - NM (4 blocks), QWEST CORPORATION (3 blocks), T-MOBILE USA, INC. (2 blocks), NEW CINGULAR WIRELESS PCS, LLC (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - NM (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is LAS VEGAS 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 505

All 685 prefixes in 505