Lookup › Area code 650 › 650-222
650-222 Prefix — San Mateo, California
Phone numbers starting with 650-222 are based in San Mateo, California, primarily served by T-Mobile.
Recently looked-up numbers in 650-222
More about this region
Area code 650 directory · About area code 650 · Get a CA phone number
Last updated: May 19, 2026