336
Area code
NC
United States geographic area code, in service since 1997-12-15. Part of the 336/743 overlay complex — ten-digit dialing required.
Statusin service
Introduced1997-12-15
JurisdictionNC, US
Local dialing10D
Time zoneEastern
Last verified2026-09-17
Utilization 101% of assignable prefixes assigned
As of 09/17/2026
0%800 of ~792 assignable NXX values (200–999 excl. N11)100%
Prefix-level assignment does not equal number-level exhaustion; thousands-block pooling extends capacity. First assignment on record 2001-01-17, most recent 2026-05-29.
Area codes serve rate-center geographies, not municipal boundaries. “NC” identifies the jurisdiction, not an exact city footprint.
Top assignees
Ranked by assigned prefixes · initial assignee ≠ current carrier| Rank | Assignee | Prefixes | Share |
|---|---|---|---|
| 01 | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 166 | 20.8% |
| 02 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 90 | 11.3% |
| 03 | SUNCOM DBA T-MOBILE USA | 63 | 7.9% |
| 04 | BRIGHTSPEED OF NORTH CAROLINA, LLC | 58 | 7.2% |
| 05 | NEW CINGULAR WIRELESS PCS, LLC - GA | 46 | 5.8% |
| 06 | PAETEC ITEL, LLC | 43 | 5.4% |
| 07 | NORTH STATE TELEPHONE CO. DBA NORTH STATE COMM | 32 | 4% |
| 08 | ONVOY, LLC - NC | 26 | 3.3% |
| 09 | LEVEL 3 COMMUNICATIONS, LLC - NC | 24 | 3% |
| 10 | TWC IP ENABLED SERVICES, LLC | 23 | 2.9% |
Important: these are initial assignees from NANPA CO-code records — the carrier a prefix was originally assigned to. Because of number portability, the current serving carrier of any individual number may differ.
Change history
Recorded events for this NPA- 2015-01-09 NPA 743 to Overlay NPA 336 (North Carolina)
- 1997-12-15Area code 336 entered service (created from 910).
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2015-01-09 | PL-475 ↗ | NPA 743 to Overlay NPA 336 (North Carolina) |
| 2014-09-18 | PL-469 ↗ | NPA 743 to Overlay NPA 336 (North Carolina) |
| 1998-03-02 | PL-114 ↗ | BellSouth Operation Support Systems Update and the Alabama and North Carolina NPA Splits |
| 1997-12-10 | PL-100 ↗ | NANP-Split of 910 (North Carolina) Numbering Plan Area (NPA) - Revised |