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Phone Numbers

How to format U.S. phone numbers

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Delivery Channels

Web

Last Updated

October 2026

Delivery Channels

Web

Last Updated

October 2026

Usage Guidance

U.S. phone numbers should be formatted as follows:

  • 415-123-1234

For international phone numbers, insert a plus sign before the country code, followed by the rest of the number. Note that using or not using dashes depends on the country:

Do
  • Ireland: +353 1 2419900
  • UK: +44 (0) 20 3318 2336
  • Auckland: +64-9-8010520
  • Singapore: +65 6809 5098
  • Japan: +81-3-4572-1200