Phone numbers in Ithaca, New York
Ithaca has 40 phone prefixes in area code 607.
Biggest holders: Verizon (local phone), Windstream (PAETEC), Tc Systems. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 25%
- Local phone company 28%
- Internet / business phone carrier 25%
- Phone company 22%
Every prefix in Ithaca
Search the first six digits of a number in this list. If it's here, the number started in Ithaca with the carrier shown. If it isn't, check the New York page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 607-216 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 607-219 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 607-220 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 607-227 | Verizon Wireless | Mobile carrier | – |
| 607-229 | AT&T Mobility | Mobile carrier | – |
| 607-233 | Tc Systems | Phone company | – |
| 607-241 | Ymax Communications | Phone company | – |
| 607-252 | Tc Systems | Phone company | – |
| 607-253 | Tc Systems | Phone company | – |
| 607-254 | Verizon (local phone) | Local phone company | – |
| 607-255 | Tc Systems | Phone company | – |
| 607-256 | Verizon (local phone) | Local phone company | – |
| 607-257 | Verizon (local phone) | Local phone company | – |
| 607-262 | T-Mobile (including Sprint) | Mobile carrier | – |
| 607-266 | Verizon (local phone) | Local phone company | – |
| 607-269 | Verizon (local phone) | Local phone company | – |
| 607-272 | Verizon (local phone) | Local phone company | – |
| 607-273 | Verizon (local phone) | Local phone company | – |
| 607-274 | Verizon (local phone) | Local phone company | – |
| 607-275 | Verizon (local phone) | Local phone company | – |
| 607-277 | Verizon (local phone) | Local phone company | – |
| 607-279 | AT&T Mobility | Mobile carrier | – |
| 607-280 | AT&T Mobility | Mobile carrier | – |
| 607-288 | Bandwidth | Internet / business phone carrier | – |
| 607-319 | Charter / Spectrum | Internet / business phone carrier | – |
| 607-327 | T-Mobile (including Sprint) | Mobile carrier | – |
| 607-330 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 607-339 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 607-342 | Tc Systems | Phone company | – |
| 607-351 | Verizon Wireless | Mobile carrier | 2002 |
| 607-375 | Tc Systems | Phone company | – |
| 607-379 | AT&T Mobility | Mobile carrier | – |
| 607-391 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 607-500 | Windstream (PAETEC) | Internet / business phone carrier | 2009 |
| 607-592 | Verizon Wireless | Mobile carrier | – |
| 607-603 | Northland Networks | Phone company | – |
| 607-645 | Verizon (local phone) | Local phone company | – |
| 607-697 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 607-793 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 607-882 | Finger Lakes Technologies Group | Phone company | 2008 |
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.