Can I check a whole list?

Yes, in a free workspace. Upload a CSV or XLSX up to 5 MB and 200,000 rows. The API takes up to 10,000 numbers per request.

What happens to what I enter?

Results aren’t saved to an account, and query data is deleted within 24 hours.

What does the time zone describe?

The time zone of the number’s numbering range. A mobile number keeps its range when the phone travels. Read the result as the range’s clock.

Does the result follow daylight saving?

Yes. timezone returns the offset in force at the time of the check.

What counts as business hours?

09:00 to 18:00, Monday to Friday, in the number’s time zone.

Free Tools

Find the Time Zone of a Phone Number

Enter a number to see the time zone of the number’s range. The result shows the time in that zone now, inside or outside business hours.

Your first $5 of validations are on us, valid for 30 days. No card required.

Time zone lookup

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Enter a number and run a free check.

For business use. Contacts you submit should be ones you are entitled to contact. · Terms · Data & opt-out

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Frequently Asked Questions

Five a day on each tool, with no account. Free checks reset at 00:00 UTC. Sign up and your first $5 of validations are on us, valid for 30 days. No card required.

Get Time Zones for a Whole List

Upload a file in a free workspace, or walk through your use case with our team.

Every phone field, method by method, on the Phone Validation page. · All free tools

Find the Time Zone of a Phone Number

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Frequently Asked Questions

Get Time Zones for a Whole List