Phone numbers in Mount Kisco, New York
Mount Kisco has 34 phone prefixes in area code 914.
Biggest holders: T-Mobile (including Sprint), Verizon (local phone), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 50%
- Local phone company 12%
- Internet / business phone carrier 26%
- Phone company 12%
Every prefix in Mount Kisco
Search the first six digits of a number in this list. If it's here, the number started in Mount Kisco with the carrier shown. If it isn't, check the New York page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 914-209 | American Network | Phone company | – |
| 914-215 | AT&T Mobility | Mobile carrier | 2009 |
| 914-218 | Tc Systems | Phone company | – |
| 914-241 | Verizon (local phone) | Local phone company | – |
| 914-242 | Verizon (local phone) | Local phone company | – |
| 914-244 | Verizon (local phone) | Local phone company | – |
| 914-299 | T-Mobile (including Sprint) | Mobile carrier | – |
| 914-314 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 914-334 | T-Mobile (including Sprint) | Mobile carrier | 2009 |
| 914-354 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 914-362 | Peerless Network Of New York | Internet / business phone carrier | 2013 |
| 914-386 | Fractel | Internet / business phone carrier | 2019 |
| 914-404 | American Network | Phone company | – |
| 914-427 | Ucomtel | Phone company | 2021 |
| 914-434 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 914-454 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 914-471 | AT&T Mobility | Mobile carrier | 2002 |
| 914-486 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 914-501 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 914-514 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 914-531 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 914-583 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 914-602 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 914-626 | TON80 Communications | Internet / business phone carrier | 2022 |
| 914-658 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 914-666 | Verizon (local phone) | Local phone company | – |
| 914-689 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 914-702 | T-Mobile (including Sprint) | Mobile carrier | 2025 |
| 914-731 | T-Mobile (including Sprint) | Mobile carrier | 2025 |
| 914-733 | MCImetro (Verizon Business) | Internet / business phone carrier | 2001 |
| 914-752 | MCImetro (Verizon Business) | Internet / business phone carrier | 2001 |
| 914-817 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 914-864 | Cablevision Lightpath | Internet / business phone carrier | – |
| 914-918 | AT&T Mobility | Mobile carrier | 2017 |
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.