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

MOUNT AIRY prefixes in area code 336

NANPA records 11 assigned NXX blocks to rate center MOUNT AIRY in area code 336, 1.4% of the 783 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 NEW CINGULAR WIRELESS PCS, LLC - GA (4), BRIGHTSPEED OF NORTH CAROLINA, LLC (4), SUNCOM DBA T-MOBILE USA (1). The earliest assignment on record here is 2001-12-27 and the most recent 2009-07-24. 8 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 227, 240, 301, 743 – overlay codes cover the same geography, so a rate center is served by all of them.

11 assigned blocks – 1.4% of 336
5 holders of record
8 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
336-415 AT&T NEW CINGULAR WIRELESS PCS, LLC - GA 2009-07-24 yes yes
336-429 T-Mobile SUNCOM DBA T-MOBILE USA 2004-06-03 yes yes
336-648 UNITED STATES CELLULAR - NC 2002-11-12 yes yes
336-673 Charter TWC IP ENABLED SERVICES, LLC – yes yes
336-710 AT&T NEW CINGULAR WIRELESS PCS, LLC - GA – yes yes
336-719 Brightspeed BRIGHTSPEED OF NORTH CAROLINA, LLC – no yes
336-755 AT&T NEW CINGULAR WIRELESS PCS, LLC - GA 2001-12-27 yes yes
336-756 AT&T NEW CINGULAR WIRELESS PCS, LLC - GA 2006-10-11 yes yes
336-783 Brightspeed BRIGHTSPEED OF NORTH CAROLINA, LLC – yes yes
336-786 Brightspeed BRIGHTSPEED OF NORTH CAROLINA, LLC – no yes
336-789 Brightspeed BRIGHTSPEED OF NORTH CAROLINA, LLC – 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

HolderBrandBlocksShare here
NEW CINGULAR WIRELESS PCS, LLC - GA AT&T 4 36.4%
BRIGHTSPEED OF NORTH CAROLINA, LLC Brightspeed 4 36.4%
SUNCOM DBA T-MOBILE USA T-Mobile 1 9.1%
UNITED STATES CELLULAR - NC – 1 9.1%
TWC IP ENABLED SERVICES, LLC Charter 1 9.1%

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 MOUNT AIRY in area code 336?

11 blocks: 415, 429, 648, 673, 710, 719, 755, 756, 783, 786, 789. The table above gives the holder of each.

Which carriers have numbers in MOUNT AIRY?

NEW CINGULAR WIRELESS PCS, LLC - GA (4 blocks), BRIGHTSPEED OF NORTH CAROLINA, LLC (4 blocks), SUNCOM DBA T-MOBILE USA (1 block), UNITED STATES CELLULAR - NC (1 block), TWC IP ENABLED SERVICES, 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 MOUNT AIRY 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 336

All 783 prefixes in 336