Phone numbers in Tiffin, Ohio
Tiffin has 15 phone prefixes in area codes 419, 567.
Biggest holders: AT&T (local phone), Verizon Wireless, Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 20%
- Local phone company 33%
- Internet / business phone carrier 40%
- Paging service 7%
Every prefix in Tiffin
Search the first six digits of a number in this list. If it's here, the number started in Tiffin with the carrier shown. If it isn't, check the Ohio page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 419-443 | AT&T (local phone) | Local phone company | – |
| 419-447 | AT&T (local phone) | Local phone company | – |
| 419-448 | AT&T (local phone) | Local phone company | – |
| 419-455 | AT&T (local phone) | Local phone company | – |
| 419-618 | Verizon Wireless | Mobile carrier | – |
| 419-805 | American Messaging Services | Paging service | – |
| 419-839 | Onvoy | Internet / business phone carrier | 2023 |
| 567-207 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 567-220 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 567-230 | AT&T Mobility | Mobile carrier | 2004 |
| 567-258 | Bandwidth | Internet / business phone carrier | – |
| 567-268 | Charter / Spectrum | Internet / business phone carrier | 2013 |
| 567-737 | TON80 Communications | Internet / business phone carrier | 2022 |
| 567-804 | Verizon Wireless | Mobile carrier | 2016 |
| 567-938 | Bascom Mutual Telephone | Local phone company | 2010 |
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.