← Area code 210
210-421 phone numbers
Numbers 210-421-0000 to 210-421-9999 are assigned to T-Mobile USA, Inc. in San Antonio, TX.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.
Reported numbers in 210-421
- 1 (210) 421-4658 2complaints
- 2 (210) 421-5489 2complaints
- 3 (210) 421-9210 2complaints
- 4 (210) 421-0000 1complaints
- 5 (210) 421-1287 1complaints
- 6 (210) 421-2057 1complaints
- 7 (210) 421-2714 1complaints
- 8 (210) 421-3295 1complaints
- 9 (210) 421-3597 1complaints
- 10 (210) 421-7304 1complaints
- 11 (210) 421-8556 1complaints
- 12 (210) 421-9261 1complaints