I dialed 213/256-0069 and an automated message identifies this as a fundraising effort for political or charitable organizations. It also provides an option to have your number added to their do not call list.
This is the California Republican Party. If you call back the number they give you all the details including their website http://CA.GOP.ORG and their do not call number 855-408-6954. You can call this number to get your name on their do not call list. I hope this was helpful.