I ran across this question on Stack Overflow: Stop Search Engine crawling of “tel:” links?
It might be a little about HTML. I'm not entirely clear on the nature of the problem. But I do see some questions here, such as this one, which seem to have a similar level of HTML-ness involved.
I can't tell if it's a duplicate. I did a search for
tel links and didn't see anything that addressed the problem.
Is the question fit to be migrated?