West Islip, NY Area Codes
West Islip, New York (population 26,559) uses area codes 631 and 934.
West Islip has no telephone exchange of its own in NANPA records; it is served by the Babylon exchange about 2.8 km away.
Carriers with West Islip numbers
34 prefixes are assigned to the Babylon exchange: 18% mobile, 44% VoIP and cable, 38% landline.
| Carrier | Prefixes |
|---|---|
| Verizon | 7 |
| T-Mobile | 5 |
| Cablevision Lightpath | 5 |
| Lumen (Level 3) | 4 |
| Onvoy (Sinch) | 3 |
| Telnyx | 1 |
| Spok | 1 |
| Verizon Wireless | 1 |
Area codes used in West Islip
| Area code | Prefixes serving West Islip | Main carriers in this code |
|---|---|---|
| 631 | 28 | Verizon, Verizon Business (MCImetro), T-Mobile |
| 934 | 6 | Onvoy (Sinch), Fractel, T-Mobile |
West Islip phone number prefixes
Numbers starting with these first six digits were originally assigned to the Babylon exchange.
631-290T-Mobile631-314Telnyx631-321Verizon631-340Spok631-358Verizon Wireless631-376Verizon631-417Cablevision Lightpath631-422Verizon631-482Csc Voice631-517Lumen (Level 3)631-526Onvoy (Sinch)631-539Cablevision Lightpath631-572T-Mobile631-587Verizon631-612Lumen (Level 3)631-620Cablevision Lightpath631-635Cablevision Lightpath631-649Lumen (Level 3)631-661Verizon631-669Verizon631-792Tc Systems631-814Onvoy (Sinch)631-818Cablevision Lightpath631-893Verizon631-934Metropcs631-943T-Mobile631-961Lumen (Level 3)631-983Verizon Business (MCImetro)934-212T-Mobile934-218T-Mobile934-241Onvoy (Sinch)934-345Fractel934-542Ton80 Communications934-900Bandwidth
Nearby cities in area code 631
- West Babylon
- Coram
- Central Islip
- Commack
- Huntington Station
- Centereach
- Bay Shore
- Shirley
- Deer Park
- Lindenhurst
- Holbrook
- Medford
Questions
- What is the area code for West Islip, NY?
- West Islip uses 2 area codes: 631 and 934. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
- What time zone is West Islip in?
- West Islip is in the Eastern time zone.