812
Area code
IN
United States geographic area code, in service since 1947-01-01. Part of the 812/930 overlay complex — ten-digit dialing required.
Statusin service
Introduced1947-01-01
JurisdictionIN, US
Local dialing10D
Time zoneEastern / Central
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 2001-02-15, most recent 2026-09-08.
Area codes serve rate-center geographies, not municipal boundaries. “IN” identifies the jurisdiction, not an exact city footprint.
Top assignees
Ranked by assigned prefixes · initial assignee ≠ current carrier| Rank | Assignee | Prefixes | Share |
|---|---|---|---|
| 01 | INDIANA BELL TEL CO INC | 133 | 16.6% |
| 02 | FRONTIER NORTH, INC. - IN | 102 | 12.8% |
| 03 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 80 | 10% |
| 04 | NEW CINGULAR WIRELESS PCS, LLC - IL | 50 | 6.3% |
| 05 | LEVEL 3 COMMUNICATIONS, LLC - IN | 49 | 6.1% |
| 06 | PAETEC ITEL, LLC | 39 | 4.9% |
| 07 | NEW CINGULAR WIRELESS PCS, LLC - GA | 36 | 4.5% |
| 08 | FRONTIER NORTH, INC.. - IN | 35 | 4.4% |
| 09 | ONVOY, LLC - IN | 25 | 3.1% |
| 10 | TWC IP ENABLED SERVICES, LLC | 21 | 2.6% |
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- 2014-10-24 NPA 930 to Overlay NPA 812 (Indiana)
- 1947-01-01Area code 812 entered service.
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2014-10-24 | PL-470 ↗ | NPA 930 to Overlay NPA 812 (Indiana) |
| 2013-09-03 | PL-457 ↗ | NPA 930 to Overlay NPA 812 (Indiana) |