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

SILVER SPG prefixes in area code 775

NANPA records 8 assigned NXX blocks to rate center SILVER SPG in area code 775, 1.3% 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 (3), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (2), CENTURYLINK COMMUNICATIONS, LLC (1). The earliest assignment on record here is 2005-07-07 and the most recent 2022-08-19. 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

8 assigned blocks – 1.3% of 775
5 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
775-210 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 2011-10-20 yes yes
775-218 Lumen CENTURYLINK COMMUNICATIONS, LLC – yes yes
775-262 Onvoy ONVOY, LLC - NV – no yes
775-278 Onvoy ONVOY, LLC - NV – no yes
775-506 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 2022-08-19 yes yes
775-577 AT&T NEVADA BELL – yes yes
775-665 Onvoy ONVOY, LLC - NV – no yes
775-909 Lumen LEVEL 3 COMMUNICATIONS, LLC - NV 2005-07-07 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 3 37.5%
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS TPx 2 25%
CENTURYLINK COMMUNICATIONS, LLC Lumen 1 12.5%
NEVADA BELL AT&T 1 12.5%
LEVEL 3 COMMUNICATIONS, LLC - NV Lumen 1 12.5%

Frequently asked

Which prefixes belong to SILVER SPG in area code 775?

8 blocks: 210, 218, 262, 278, 506, 577, 665, 909. The table above gives the holder of each.

Which carriers have numbers in SILVER SPG?

ONVOY, LLC - NV (3 blocks), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (2 blocks), CENTURYLINK COMMUNICATIONS, LLC (1 block), NEVADA BELL (1 block), LEVEL 3 COMMUNICATIONS, LLC - NV (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is SILVER SPG 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