531
Area code
NE
United States geographic area code, in service since 2011-03-26. Part of the 402/531 overlay complex — ten-digit dialing required.
Statusin service
Introduced2011-03-26
JurisdictionNE, US
Local dialing10D
Time zoneCentral
Last verified2026-09-17
Utilization 35.7% of assignable prefixes assigned
As of 09/17/2026
0%283 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 2013-02-13, most recent 2026-09-10.
Area codes serve rate-center geographies, not municipal boundaries. “NE” identifies the jurisdiction, not an exact city footprint.
Top assignees
Ranked by assigned prefixes · initial assignee ≠ current carrier| Rank | Assignee | Prefixes | Share |
|---|---|---|---|
| 01 | ONVOY, LLC - NE | 64 | 22.6% |
| 02 | NEW CINGULAR WIRELESS PCS, LLC - IL | 23 | 8.1% |
| 03 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE | 23 | 8.1% |
| 04 | TELEPORT COMMUNICATIONS AMERICA, LLC - NE | 18 | 6.4% |
| 05 | AERIAL COMMUNICATIONS, INC. | 17 | 6% |
| 06 | UNITED STATES CELLULAR - NE | 15 | 5.3% |
| 07 | LEVEL 3 COMMUNICATIONS, LLC - NE | 10 | 3.5% |
| 08 | MULTIPLE OCN LISTING | 9 | 3.2% |
| 09 | ALLO COMMUNICATIONS LLC | 9 | 3.2% |
| 10 | 9 | 3.2% |
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- 2010-09-01 NPA 531 to Overlay NPA 402 (Nebraska)
- 2011-03-26Area code 531 entered service (created from 402).
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2010-09-01 | PL-410 ↗ | NPA 531 to Overlay NPA 402 (Nebraska) |
| 2009-10-07 | PL-397 ↗ | NPA 531 to Overlay NPA 402 (Nebraska) |
| 2009-08-17 | PL-393 ↗ | NPA 531 to Overlay NPA 402 (Nebraska) |