Called the number and got a message stating this is coming from a textplus.com number. I emailed the company complaint address and CCed the FCC. Sounds like textplus.com needs some way to prevent these abuses.
I received a text from this number today, with my name and the message "U there? Have not heard from u in a while." - so glad I checked online and did not respond to the text!
Same thing as below. Got a text from 409-331-6455 saying are you there Michael? Haven't heard from you in a while. Phone number is registered in Texas but is probably a no-name throw-away cell phone. It was fishy as I knew of no one in Texas that I would want to contact.
Got a text message from this number. The first message was "hi kevin haven't heard from you in a while." I replied "who is this." Then they replied "you have to add me on yahoo messenger to know who this is" so yeah its a scam.