Phone numbers in Clermont, Ohio
Clermont has 23 phone prefixes in area codes 283, 513.
Biggest holders: Cincinnati Bell, Onvoy, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 9%
- Local phone company 48%
- Internet / business phone carrier 43%
Every prefix in Clermont
Search the first six digits of a number in this list. If it's here, the number started in Clermont with the carrier shown. If it isn't, check the Ohio page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 283-201 | Onvoy | Internet / business phone carrier | 2023 |
| 283-218 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 283-234 | T-Mobile (including Sprint) | Mobile carrier | 2025 |
| 513-201 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 513-286 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 513-449 | Bandwidth | Internet / business phone carrier | 2015 |
| 513-495 | Cincinnati Bell | Local phone company | 2013 |
| 513-528 | Cincinnati Bell | Local phone company | – |
| 513-553 | Cincinnati Bell | Local phone company | – |
| 513-685 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 513-688 | Cincinnati Bell | Local phone company | – |
| 513-718 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 513-732 | Cincinnati Bell | Local phone company | – |
| 513-735 | Cincinnati Bell | Local phone company | – |
| 513-750 | Bandwidth | Internet / business phone carrier | 2020 |
| 513-752 | Cincinnati Bell | Local phone company | – |
| 513-753 | Cincinnati Bell | Local phone company | – |
| 513-797 | Cincinnati Bell | Local phone company | – |
| 513-843 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 513-902 | Telnyx | Internet / business phone carrier | 2021 |
| 513-943 | Cincinnati Bell | Local phone company | – |
| 513-947 | Cincinnati Bell | Local phone company | – |
| 513-986 | Onvoy | Internet / business phone carrier | 2015 |
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.