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← Area code 443

443-423 phone numbers

Numbers 443-423-0000 to 443-423-9999 are assigned to Level 3 Communications, LLC in Baltimore, MD. 9 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.

Reported numbers in 443-423

  1. 1 (443) 423-1939 18complaints
  2. 2 (443) 423-1577 4complaints
  3. 3 (443) 423-0207 1complaints
  4. 4 (443) 423-0371 1complaints
  5. 5 (443) 423-0759 1complaints
  6. 6 (443) 423-0871 1complaints
  7. 7 (443) 423-1566 1complaints
  8. 8 (443) 423-1926 1complaints
  9. 9 (443) 423-1946 1complaints
  10. 10 (443) 423-3059 1complaints
  11. 11 (443) 423-3729 1complaints
  12. 12 (443) 423-4965 1complaints
  13. 13 (443) 423-6290 1complaints
  14. 14 (443) 423-7586 1complaints
  15. 15 (443) 423-8567 1complaints