This number actually came in as 627-587-1107 C1.
I have no idea with the C1 stands for.   What little bit of that I can find on here says it comes out of Massachusetts .   I'm pretty sure these last four digits are related to Curtis Rash? they seem to have an endless supply of phone numbers to call from, there was no message left .  Curtis Rash is looking for an old roommate of mine and is not excepting the concept that that person is no longer here .
I also I'm not sure if this detergent or ability to search this number .  I find it interesting that this number comes in often right after I've use my phone for the first time in the course of the day .  It would not surprise me if my telephone activity was actually being monitored somewhere in order for these people to harass us .