Want to establish a presence in New Hampshire?
A 603 number makes it easy with MySecondLine.
Start building local connections today.
Establish your local number from the comfort of your current location, wherever that may be.
Protect your personal contact information with a dedicated second number for public use.
Replace your current number with a new one in moments.
The 603 area code was created in 1947 and is tied exclusively to New Hampshire. It covers iconic neighborhoods like:
Manchester – the vibrant heart of the state
Nashua – known for its culture and community
Concord – the historic state capital
For generations, 603 has represented New Hampshire pride, offering the best of state life with fast access to all towns.
The 603 area code operates in the Eastern Time Zone (ET)–the same time zone as New Hampshire. This is important for businesses and professionals who need to stay in sync with local clients, suppliers, and partners. Whether you’re scheduling calls, running local ads, or managing customer support, having a 603 number means you’re aligned with Eastern Standard Time (EST) in winter and Eastern Daylight Time (EDT) in summer.
The 603 area code covers all of New Hampshire, including:
Manchester
Nashua
Concord
and many more.
Getting a 603 number gives your calls a familiar, local presence in one of New Hampshire’s busiest urban regions. It’s perfect for real estate agents, freelancers, remote workers, and anyone who wants to appear local while staying flexible.
Everything you need in one powerful solution
Get a memorable personalized phone number, e.g. 323-CHA-RLES
Your virtual phone works around the clock across all locations
Automatically filter out spam and unwanted calls
Record a custom greeting message for callers to hear when they reach your number
Connect with anyone nationwide through clear voice calls
Make overseas calls directly from your second number
Full SMS capabilities for your virtual number
Global texting with your second line
Record important calls for quality assurance or future reference
Never miss a message with voicemail transcription
Route calls to any number you choose
Set up future calls at your convenience
Begin by creating your MySecondLine account. Choose 'Select a Preferred Phone Number' and click 'No' when asked if you only need basic features.
Identify the United States in the country selection and confirm your choice to move ahead.
Complete the process by entering your area code preference, browsing available numbers, and selecting your subscription.
"Using my virtual phone number for online shopping has been a game changer; I can keep my personal info safe while still getting my packages delivered. It's also super handy for dating apps, making it easy to connect without revealing my real number."