Add JSON-LD markup in your WordPress website, to display your company's phone number(s) on Google Knowledge Panels.
You can now include your company's number in search results.
By using this plugin on your official site, Google will be able to display it in the Knowledge panel for some searches.
For now, there is a defined list of phone numbers that can be included :
Additionally, You will be able to set some options for each type of number, like the served areas, languages spoken and more.
For more information, you can read the official page : https://support.google.com/webmasters/answer/4620709?hl=en
Serbo-Croatian translation by http://www.webhostinghub.com/