670 area code
Area code 670 is in Northern Mariana Islands. It's on Chamorro Time (no daylight saving).
Chamorro Time (no daylight saving)
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Is it a good time to call 670?
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Business hours are taken as 9 AM to 5 PM on weekdays. US telemarketing rules only allow sales calls between 8 AM and 9 PM local time.
More: look up another area code · time zone converter · US time zones map
Questions people ask
Where is area code 670?
Area code 670 is in Northern Mariana Islands.
What time zone is area code 670?
670 is on Chamorro Time (no daylight saving) (UTC+10).
What time is it in area code 670 right now?
The live clock at the top of this page shows the current local time in area code 670.
Is area code 670 international?
Yes. Northern Mariana Islands is outside the United States and Canada, so calls to it are usually charged as international calls even though you dial 1 + the area code.