Holtsville, NY Area Codes
Holtsville, New York (population 19,250) uses area codes 631 and 934.
Holtsville has no telephone exchange of its own in NANPA records; it is served by the Patchogue exchange about 5.8 km away.
Carriers with Holtsville numbers
32 prefixes are assigned to the Patchogue exchange: 25% mobile, 28% VoIP and cable, 47% landline.
| Carrier | Prefixes |
|---|---|
| Verizon | 8 |
| AT&T Mobility | 7 |
| Csc Voice | 2 |
| Lumen (Level 3) | 2 |
| Verizon Business (MCImetro) | 2 |
| Cablevision Lightpath | 2 |
| Paetec Itel | 2 |
| Onvoy (Sinch) | 2 |
Area codes used in Holtsville
| Area code | Prefixes serving Holtsville | Main carriers in this code |
|---|---|---|
| 631 | 26 | Verizon, Verizon Business (MCImetro), T-Mobile |
| 934 | 6 | Onvoy (Sinch), Fractel, T-Mobile |
Holtsville phone number prefixes
Numbers starting with these first six digits were originally assigned to the Patchogue exchange.
631-207Verizon631-289Verizon631-307AT&T Mobility631-310AT&T Mobility631-312Tc Systems631-317AT&T Mobility631-438Bandwidth631-447Verizon631-475Verizon631-562Csc Voice631-569Lumen (Level 3)631-576Verizon Business (MCImetro)631-605AT&T Mobility631-627Cablevision Lightpath631-654Verizon631-687Verizon631-690AT&T Mobility631-714Lumen (Level 3)631-730Cablevision Lightpath631-758Verizon631-790T-Mobile631-879Verizon Business (MCImetro)631-890Verizon631-891Paetec Itel631-908Csc Voice631-977Onvoy (Sinch)934-208Peering Hub934-238Onvoy (Sinch)934-257Paetec Itel934-259AT&T Mobility934-275AT&T Mobility934-742Ton80 Communications
Nearby cities in area code 631
- West Babylon
- Coram
- Central Islip
- Commack
- Huntington Station
- Centereach
- Bay Shore
- Shirley
- Deer Park
- Lindenhurst
- West Islip
- Holbrook
Questions
- What is the area code for Holtsville, NY?
- Holtsville 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 Holtsville in?
- Holtsville is in the Eastern time zone.