I'm so sorry, if he is texting someone at an escort site that many times he most likely has been seeing hookers. That's how I found out about my husbands cheating. I saw a number on his phone,googled it and it was an escort site. After that I googled every single number on his phone bill that I didn't reconize for the last 18 months and found at least 20 hookers and that was only going back 18 months. After months of trickle truth he admitted he'd been going to hookers/massage parlors, etc for the last fifteen years. I would NEVER in a million years ever suspect him of doing that. Please don't believe any crap that he says like "I was just curious", "I was just talking to them". Believe me hookers don't have time to talk to men that aren't paying them.
Oh and the number coming from out of state means nothing. The numbers I found came from all kinds of weird states and counties way far away from where I live.