Look out for these Top Telemarketer Area Codes.
Aside from the popularly used toll-free number exchanges (800, 866, 877, 888, 855), the top spam area codes are:
1. 313 – Detroit
2. 713 – Houston
3. 954 – Fort Lauderdale
4. 404 – Atlanta
5. 484 – Eastern and Southeastern Pennsylvania
6. 407 – Orlando
7. 214 – Dallas
8. 202 – Washington, D.C.
9. 972 – Dallas
10. 205 – Birmingham