Phone numbers disappearing from screen

This is a little strange. No matter what site I am on, if a phone number is part of the display it flashes and then becomes invisible. No idea why this is happening. Anyone familiar with this? Is this a setting from protective software? Any help appreciated

 

If you select all, does the phone number show up?

Also, what browser?

 

This is on yellowpages.com and google maps showing up as ad. using Mozilla. Select all does not retrieve the number. I am going to check this from my laptop and see if I get same result.