Numbers with this prefix were first introduced in 2001.While 3072031421 was originally issued with the info above, the owner of the phone number (307) 203-1421 may have transferred it through a process called porting.
Caller type: Unknown
I get dozens of spam/telemarketing calls on my cell phone per week and I decided to start reporting every #. Caller ID says from Wyoming. This is getting ridiculous!! The FTC and cell providers need to start cracking down on this abuse!!