463
Area code
IN
United States geographic area code, in service since 2016-11-15. Part of the 317/463 overlay complex — ten-digit dialing required.
Statusin service
Introduced2016-11-15
JurisdictionIN, US
Local dialing10D
Time zoneEastern
Last verified2026-09-17
Utilization 25.5% of assignable prefixes assigned
As of 09/17/2026
0%202 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 2016-11-08, most recent 2026-09-16.
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 | ONVOY, LLC - IN | 51 | 25.2% |
| 02 | NEW CINGULAR WIRELESS PCS, LLC - IL | 22 | 10.9% |
| 03 | FRACTEL, LLC | 17 | 8.4% |
| 04 | BANDWIDTH.COM CLEC, LLC - IN | 15 | 7.4% |
| 05 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 13 | 6.4% |
| 06 | TON80 COMMUNICATIONS, LLC | 11 | 5.4% |
| 07 | MULTIPLE OCN LISTING | 9 | 4.5% |
| 08 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 9 | 4.5% |
| 09 | LEVEL 3 COMMUNICATIONS, LLC - IN | 8 | 4% |
| 10 | ONVOY SPECTRUM, LLC | 5 | 2.5% |
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- 2016-08-31 NPA 463 to Overlay NPA 317 (Indiana)
- 2016-11-15Area code 463 entered service (created from 317).
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2016-08-31 | PL-496 ↗ | NPA 463 to Overlay NPA 317 (Indiana) |
| 2015-05-13 | PL-482 ↗ | NPA 463 to Overlay NPA 317 (Indiana) |