801
Area code
UT
United States geographic area code, in service since 1947-01-01. Part of the 385/801 overlay complex — ten-digit dialing required.
Statusin service
Introduced1947-01-01
JurisdictionUT, US
Local dialing10D
Time zoneMountain
Last verified2026-09-17
Utilization 100.8% of assignable prefixes assigned
As of 09/17/2026
0%798 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 2024-02-14.
Area codes serve rate-center geographies, not municipal boundaries. “UT” identifies the jurisdiction, not an exact city footprint.
Top assignees
Ranked by assigned prefixes · initial assignee ≠ current carrier| Rank | Assignee | Prefixes | Share |
|---|---|---|---|
| 01 | QWEST CORPORATION | 327 | 41% |
| 02 | T-MOBILE USA, INC. | 91 | 11.4% |
| 03 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 69 | 8.6% |
| 04 | NEW CINGULAR WIRELESS PCS, LLC | 62 | 7.8% |
| 05 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 50 | 6.3% |
| 06 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 43 | 5.4% |
| 07 | ONVOY, LLC - UT | 39 | 4.9% |
| 08 | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 24 | 3% |
| 09 | LEVEL 3 COMMUNICATIONS, LLC - UT | 13 | 1.6% |
| 10 | FIRSTDIGITAL TELECOM, LLC - UT | 13 | 1.6% |
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- 2007-08-16 NPA 385 to Overlay NPA 801 (Utah)
- 1947-01-01Area code 801 entered service.
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2007-08-16 | PL-366 ↗ | NPA 385 to Overlay NPA 801 (Utah) |
| 2007-07-23 | PL-363 ↗ | NPA 385 to Overlay NPA 801 (Utah) |
| 2004-06-23 | PL-337 ↗ | Utah 801-385 Split Suspended |
| 2002-10-22 | PL-326 ↗ | 801 NPA; 2-way Split Creating 385, Delayed until March 2005 (Utah) |
| 2001-10-29 | PL-308 ↗ | Delayed Introduction of the 385 NPA (Utah) |
| 2000-11-06 | PL-248 ↗ | 801 NPA Split Delayed (Utah) |
| 2000-05-31 | PL-231 ↗ | 801 NPA Split, Creating 385 NPA (Utah) |