How do I dial area code 603 from abroad?

Dial +1 603 followed by the 7-digit local number. For example: +1-603-XXX-XXXX.

DialHard - Area Code 603: New Hampshire

Q: What area does 603 cover?

Area code 603 covers New Hampshire in New Hampshire.

Q: What time zone is area code 603?

Area code 603 is in the Eastern Time time zone (EST).

What area does 603 cover?

Area code 603 covers New Hampshire in New Hampshire.

What time zone is area code 603?

Eastern Time (EST)

Current local time: --:--

Fair time to call this area

Early morning · OK for personal calls. Not ideal for business.

How do I dial area code 603?

From within the US

603-XXX-XXXX or 1-603-XXX-XXXX

Most areas require 10-digit dialing even for local calls.

From abroad

+1 603 XXX XXXX

Replace +1 with your country's international dialing prefix if your phone doesn't support +.

Storing in contacts

+1603XXXXXXX

Use E.164 format (+1 followed by all 10 digits) for maximum compatibility.

Is 603 a mobile or landline area code?

In the US, area codes don't distinguish between mobile and landline numbers. A 603 number could be either. Number portability allows people to keep their numbers when switching between mobile and landline service.

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