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

HAWTHORNE prefixes in area code 775

NANPA records 9 assigned NXX blocks to rate center HAWTHORNE in area code 775, 1.5% of the 601 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. 5 holders hold those blocks, the largest being ONVOY, LLC - NV (4), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV (2), UTILITY TELECOM GROUP, LLC - NV (1). The earliest assignment on record here is 2001-07-10 and the most recent 2003-02-06. 4 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 310, 352, 424, 862 – overlay codes cover the same geography, so a rate center is served by all of them.

9 assigned blocks – 1.5% of 775
5 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
775-228 UTILITY TELECOM GROUP, LLC - NV 2001-07-10 no yes
775-258 Onvoy ONVOY, LLC - NV – no yes
775-312 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 2003-02-06 yes yes
775-316 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 2002-08-01 yes yes
775-317 Onvoy ONVOY, LLC - NV – no yes
775-341 MATRIX TELECOM, LLC. S/I/I TNCI - NV 2002-09-20 yes yes
775-514 Onvoy ONVOY, LLC - NV – no yes
775-659 Onvoy ONVOY, LLC - NV – no yes
775-945 AT&T NEVADA BELL – 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 - NV Onvoy 4 44.4%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV Verizon 2 22.2%
UTILITY TELECOM GROUP, LLC - NV – 1 11.1%
MATRIX TELECOM, LLC. S/I/I TNCI - NV – 1 11.1%
NEVADA BELL AT&T 1 11.1%

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 HAWTHORNE in area code 775?

9 blocks: 228, 258, 312, 316, 317, 341, 514, 659, 945. The table above gives the holder of each.

Which carriers have numbers in HAWTHORNE?

ONVOY, LLC - NV (4 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV (2 blocks), UTILITY TELECOM GROUP, LLC - NV (1 block), MATRIX TELECOM, LLC. S/I/I TNCI - NV (1 block), NEVADA BELL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is HAWTHORNE 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 775

All 601 prefixes in 775