Phone numbers in Hannibal, Missouri
Hannibal has 13 phone prefixes in area code 573.
Biggest holders: AT&T (local phone), UScellular, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 46%
- Local phone company 38%
- Internet / business phone carrier 8%
- Phone company 8%
Every prefix in Hannibal
Search the first six digits of a number in this list. If it's here, the number started in Hannibal with the carrier shown. If it isn't, check the Missouri page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 573-221 | AT&T (local phone) | Local phone company | – |
| 573-231 | AT&T (local phone) | Local phone company | – |
| 573-248 | AT&T (local phone) | Local phone company | – |
| 573-406 | AT&T (local phone) | Local phone company | – |
| 573-501 | UScellular | Mobile carrier | 2014 |
| 573-541 | AT&T Mobility | Mobile carrier | 2001 |
| 573-577 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 573-600 | Chariton Valley Communications | Phone company | 2015 |
| 573-603 | Charter / Spectrum | Internet / business phone carrier | 2013 |
| 573-629 | AT&T (local phone) | Local phone company | 2001 |
| 573-719 | UScellular | Mobile carrier | 2010 |
| 573-795 | T-Mobile (including Sprint) | Mobile carrier | – |
| 573-822 | UScellular | Mobile carrier | – |
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.