975
Area code
MO
United States geographic area code, in service since 2023-10-13. Part of the 816/975 overlay complex — ten-digit dialing required.
Statusin service
Introduced2023-10-13
JurisdictionMO, US
Local dialing10D
Time zoneCentral
Last verified2026-09-17
Utilization 5.2% of assignable prefixes assigned
As of 09/17/2026
0%41 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 2025-05-20, most recent 2026-09-16.
Area codes serve rate-center geographies, not municipal boundaries. “MO” 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 - MO | 14 | 34.1% |
| 02 | MULTIPLE OCN LISTING | 9 | 22% |
| 03 | NEW CINGULAR WIRELESS PCS, LLC - IL | 7 | 17.1% |
| 04 | 5 | 12.2% | |
| 05 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 2 | 4.9% |
| 06 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 1 | 2.4% |
| 07 | SHELCOMM | 1 | 2.4% |
| 08 | BANDWIDTH.COM CLEC, LLC - MO | 1 | 2.4% |
| 09 | AT&T - LOCAL | 1 | 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- 2022-06-21 NPA 975 to Overlay NPA 816 (Missouri) – supersedes PL-568
- 2023-10-13Area code 975 entered service (created from 816).
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2022-06-21 | PL-597 ↗ | NPA 975 to Overlay NPA 816 (Missouri) – supersedes PL-568 |
| 2021-10-28 | PL-568 ↗ | NPA 975 to Overlay NPA 816 (Missouri) |
| 2001-10-05 | PL-304 ↗ | Suspension Relief in the 816 NPA (Missouri) |
| 2001-05-09 | PL-280 ↗ | NPA 975 Overlay of NPA 816 Implementation Date Change (Missouri) |
| 2001-02-20 | PL-262 ↗ | New NPA 975 to Overlay NPA 816 (Missouri) |