They have called me from:

916-613-0839 - Sacramento, CA (Metro PCS)
217-299-1962 - Springfield, IL (Verizon Wireless)
608-386-3130 - La Crosse, WI (United States Cellular Corperation)
480-317-0183 - Phoenix, AZ (Qwest Corporation)
954-235-8707 - Fort Lauderdale, FL (Cingular Wireless)
781-974-1008 - Weymouth, MA (CTC Communications)
954-429-8824 - A & R Towing Corporation
480-948-4840 - Phoenix, AZ (Qwest Corporation)
641-920-8463 - Snapvine
561-255-1467 - West Palm Beach, FL (Metro PCS)
561-371-6228 - West Palm Beach, FL (Cingular Wireless)
205-427-5399 - Birmingham, AL (Powertel)
408-774-0084 - Quellan Incorperated©
850-445-1755 - Tallahassee, FL (Verizon Wireless)
416-353-4452 - Toronto, ON (Bell Canada)
866-327-8877 - Sorensen VRS
800-855-0000 - VA Relay
612-547-0006 - Twin Cities, MN (MCI Metro)
800-420-1479 - GroupCast©
614-561-9197 - Columbus, OH (Verizon Wireless)
310-928-7055 - Compton, CA (XO)
614-449-2664 - Columbus, OH (Ameritech)
866-849-3243 - Xpedite©