A unique phone number from Google that you can use in your ads to help track calls and messages to your business.

• Use call extensions or call-only ads with a Google forwarding number to help receive and track phone calls resulting from your ad. Use message extensions with a Google forwarding number to help receive and track messages resulting from your ad.
• Here's how it works: Google provides a unique phone number that's displayed with your ads. If a potential customer calls or messages this phone number, Google Ads will route the call or message to your business phone number. You'll then be able to see detailed reports about calls or messages generated from your ads.
• Google forwarding numbers are currently available in these countries.

About call reporting
About message reporting

* Nguồn: Google