Official phone numbers, verified at the source

These are the official phone numbers of 45 US and UK government agencies, banks, card networks, carriers and airlines, each copied from the organization's own website on November 9, 2026. Where an organization publishes a separate number for callers abroad, we list that too, because most toll-free numbers don't work from outside the country.

Check a number that called you

Type the number to see whether it's one of the official lines below. A match means the number is real, not that the call was: caller ID is easy to fake, so if a “bank” or “tax office” calls you, hang up and call back on the official number yourself.

How we verify these numbers

We only list a number after reading it on the organization's own website, or an official government page, and every organization page names the exact pages we checked. We never copy numbers from other directories, because that's how fake numbers spread. If we couldn't find a number on an official page, it isn't here.

Calling one of these from abroad? Our guides cover the IRS, Social Security, HMRC and the UK pension centre, plus US 1-800 numbers and UK 0300 numbers.