Well according to telephonereverse411.com, the number belongs to a private party. Here's the web page:
http://www.telephonereverse411.com/listing/210-538-2107
Of course, with so much number spoofing it's hard to know for sure. Do you know this party?
I got a message from this number asking if he could domesticate me. I'm under the age and have a private number who only family and close friends have. I have no idea how he got my number but there's so reason for this to be happening. This isn't the only time he has messaged me. I have never replied or gotten the persons name.
I got a text from 2105382107 and said to call for some hot phone talk. I can feel the nasty trying to crawl through the damned phone. Stupid [***] people.