Phone numbers in Agency, Missouri
Agency has 5 phone prefixes in area code 816.
Biggest holders: AT&T (local phone), Csc Wireless, Csc Voice. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 20%
- Local phone company 20%
- Internet / business phone carrier 40%
- Phone company 20%
Every prefix in Agency
Search the first six digits of a number in this list. If it's here, the number started in Agency with the carrier shown. If it isn't, check the Missouri page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 816-253 | AT&T (local phone) | Local phone company | – |
| 816-327 | Csc Wireless | Mobile carrier | 2019 |
| 816-338 | Csc Voice | Internet / business phone carrier | – |
| 816-485 | Onvoy | Internet / business phone carrier | 2021 |
| 816-913 | Eon Telecom | Phone company | 2025 |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.