Phone numbers in Pittsburg, Kansas
Pittsburg has 15 phone prefixes in area code 620.
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 40%
- Local phone company 33%
- Internet / business phone carrier 27%
Every prefix in Pittsburg
Search the first six digits of a number in this list. If it's here, the number started in Pittsburg with the carrier shown. If it isn't, check the Kansas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 620-230 | AT&T (local phone) | Local phone company | – |
| 620-231 | AT&T (local phone) | Local phone company | – |
| 620-232 | AT&T (local phone) | Local phone company | – |
| 620-235 | AT&T (local phone) | Local phone company | – |
| 620-240 | AT&T (local phone) | Local phone company | – |
| 620-249 | UScellular | Mobile carrier | – |
| 620-308 | Comcast | Internet / business phone carrier | – |
| 620-404 | UScellular | Mobile carrier | – |
| 620-619 | Teleport Communications America | Internet / business phone carrier | 2024 |
| 620-670 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 620-687 | Verizon Wireless | Mobile carrier | 2002 |
| 620-704 | AT&T Mobility | Mobile carrier | 2001 |
| 620-719 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 620-822 | Fractel | Internet / business phone carrier | 2021 |
| 620-875 | T-Mobile (including Sprint) | 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.