Lookup › Area code 319 › 319-420
319-420 Prefix — Waterloo, Iowa
Phone numbers starting with 319-420 are based in Waterloo, Iowa, primarily served by At&t.
Recently looked-up numbers in 319-420
More about this region
Area code 319 directory · About area code 319 · Get a IA phone number
Last updated: June 28, 2026