SimuWave
Mount Washington from Intervale, NH

Business phone numbers in New Hampshire

Local New Hampshire numbers are scarce right now. Search what's in stock, or bring the number you already have. Porting is free.

649
numbers available
1
area code with stock
138
local calling areas
Free
porting, any volume
The Granite State

Doing business by phone in New Hampshire

New Hampshire is one area code, 603. The southern tier around Manchester and Nashua is effectively part of greater Boston's tech and manufacturing economy, while the Lakes Region and White Mountains run on tourism and seasonal business.

Local tipWith no in-state area-code choices, picking the right town is what makes a 603 number feel local. Stock in a given town can run out, so search before you promise a customer a specific exchange.
Capital
Concord
Largest metros
Manchester, Nashua, Concord, Derry
Time zone
Eastern
Area codes with stock
603
Inventory checked
November 4, 2026
Area codes

New Hampshire is one area code: 603

Every New Hampshire number shares 603, so the town you pick is what makes it local.

Towns

New Hampshire towns with the most numbers

Tap a town to see its numbers. Every other town in New Hampshire is in the full search.

For MSPs and IT shops

Sell phone service to New Hampshire businesses under your own name

SimuWave is the carrier behind it. You brand it, price it and own the customer, and we handle the numbers, the network, E911 and the paperwork. Same published rates in every state.

$0platform fee, ever
$4.00per extension, per month
$1.50per local number, per month
$0.019per minute, published
Questions

New Hampshire phone numbers: common questions

What area codes can I get in New Hampshire?

Right now we have numbers in area code: 603. Stock changes daily, so search for the exact town you want.

Can I get a number in a specific New Hampshire town?

Yes. Numbers are tied to a local calling area, so pick the town your customers are in and the number reads as local to them. Rochester, Lyme, Madison have the deepest stock right now. Search above, or open the full search with every town in New Hampshire.

Can I keep my existing New Hampshire business number?

Yes. Porting is free, in any volume. Keep the number your customers already know and point it at SimuWave. It can ring desk phones and cell phones at the same time.

How fast can a New Hampshire number be working?

A new number is live in minutes: choose it, attach a call flow, and it rings. Ports take longer because the current carrier has to release the number, and the number keeps working on the old service until the port completes.

What time zone should I set for New Hampshire business hours?

New Hampshire is on Eastern time. Set your business hours once in the call flow, and after-hours calls go to voicemail, an answering service or a cell phone automatically.

Nearby

States next to New Hampshire

Photo: Mount Washington, by Harvey Barrison (Wikimedia Commons), CC BY-SA 2.0. Resized.

New Hampshire Business Phone Numbers — 603 | SimuWave