Area code 934: New York
Area code 934 is a US state area code for New York, on Eastern Time. It has 128 prefixes in service across 46 rate centers, the largest being Riverhead, Amityville and Brentwood. It shares its area with 631, so local numbers there can start with any of them. Local calls there take 10 digits.
Local time in area code 934
America/New_York
Prefixes in service
128 of 792 possible
46 rate centers
Area code 934 facts
| Location | New York, United States |
|---|---|
| Time zone | Eastern Time |
| Overlays | 631 |
| Overlay of | 631 |
| In service since | July 16, 2016 |
| Local calls | 10 digits |
| Carrier | Not shown. An area code is where a number was issued; numbers port between carriers. Check line type |
Which cities and towns use area code 934?
NANPA records each prefix against a rate center, the local billing area a number belongs to, usually named after its main town. These are the 934 rate centers with the most prefixes in service. 34 smaller ones aren't listed.
| Rate center | Prefixes |
|---|---|
| Riverhead | 14 |
| Amityville | 12 |
| Brentwood | 8 |
| Babylon | 6 |
| Patchogue | 5 |
| Yaphank | 5 |
| Huntington | 4 |
| Bellport | 4 |
| Central Islip | 4 |
| Smithtown | 4 |
| Ronkonkoma | 4 |
| Deer Park | 3 |
Source: NANPA central office code assignments, file dated 10/17/2026. Each prefix holds up to 10,000 numbers.
How do I dial a 934 number?
NANPA's dialling plan for 934: local calls inside the code take 10 digits, toll calls 10 digits. From another area code, dial 1 first. From abroad, use +1. The examples use 555-0147, from a range reserved for fictional numbers.
| Local call inside 934 | 934-555-0147 |
|---|---|
| From another US or Canadian area code | 1-934-555-0147 |
| From outside North America | +1 934 555 0147 |
| E.164, for CRMs and SMS tools | +19345550147 |
When did area code 934 start?
Area code 934 went into service on July 16, 2016 as an overlay of 631. Today 934 and 631 cover the same area as an overlay, which is why 10-digit dialling is needed for local calls there.
Tools for 934 numbers
- Area code lookup
Look up any code or a whole list of numbers, or find the codes for a state or city.
- Area code time zone
Local time for a list of numbers, with a callable-now flag.
- NPA-NXX lookup
Rate center and state for one prefix, a level below the area code.
- TCPA calling hours checker
Whether it's inside the federal 8 a.m. to 9 p.m. calling window there now.
Next step
A 934 number tells you where it was issued, not what it is now.
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Area code 934 questions
- What state is area code 934?
- Area code 934 is in New York, United States. Its largest rate centers by number of prefixes are Riverhead, Amityville, Brentwood, Babylon and Patchogue.
- What time zone is area code 934 in?
- Eastern Time.
- What area codes overlay 934?
- 631. An overlay adds a new code to the same area instead of splitting it, so neighbours can have different area codes and local calls need 10 digits.
- When did area code 934 start?
- Area code 934 went into service on July 16, 2016 as an overlay of 631.
- Is a 934 number a cell phone or a landline?
- The area code can't tell you. In the US and Canada mobiles, landlines and VoIP lines share area codes and prefixes, and numbers move between carriers and line types. Only a live line-type lookup answers it for one number.
- How many phone numbers does area code 934 have?
- 128 of its 792 possible prefixes are in service, and each prefix holds up to 10,000 numbers. That counts prefixes assigned to carriers, not numbers in use.
Other area codes in New York
212315329332347363465516518585607624631646680716718838845914917929
Sources
Location, overlays, in-service date and dialling plan: NANPA NPA database, file dated 10/16/2026. Prefixes and rate centers: NANPA central office code assignments, 10/17/2026. Time zones mapped to the IANA time zone database. By the SimpleVerifier Team; how we build these pages.