574
Area code
Statusin service
Introduced2002-01-15
JurisdictionIN, US
Local dialing10D
Time zoneEastern / Central
Last verified2026-09-17
Utilization 52.8% of assignable prefixes assigned
As of 09/17/2026
0%418 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 2001-01-04, most recent 2026-07-10.
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 | NEW CINGULAR WIRELESS PCS, LLC - IL | 49 | 11.7% |
| 02 | FRONTIER NORTH, INC.. - IN | 45 | 10.8% |
| 03 | INDIANA BELL TEL CO INC | 43 | 10.3% |
| 04 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 38 | 9.1% |
| 05 | BRIGHTSPEED OF INDIANA, LLC | 35 | 8.4% |
| 06 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 28 | 6.7% |
| 07 | LEVEL 3 COMMUNICATIONS, LLC - IN | 26 | 6.2% |
| 08 | ONVOY, LLC - IN | 24 | 5.7% |
| 09 | FRACTEL, LLC | 11 | 2.6% |
| 10 | METROPCS, INC. | 10 | 2.4% |
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- 2002-01-15Area code 574 entered service (created from 219).
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2021-01-08 | PL-556 ↗ | Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Lifeline) – supersedes PL-544 |
| 2020-08-17 | PL-544 ↗ | Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline |
| 2001-10-31 | PL-309 ↗ | Amended 219 NPA Split Creating 574 and 260 NPAs (Indiana) |
| 2001-08-17 | PL-296 ↗ | 219 NPA Split; Creating 574 and 260 NPA's (Indiana) |