Numbers with this prefix were first introduced in 2005.While 2535091837 was originally issued with the info above, the owner of the phone number (253) 509-1837 may have transferred it through a process called porting.
Caller type: Telemarketer
Called my cell phone this afternoon. I didn't answer and no voicemail was left. I called back to verify who called and only got a brief recording to "press 1 to be taken off call list" or something similar. Therefore figured was some sort of telemarketer.