631-220 Prefix — Ronkonkoma, New York

Phone numbers starting with 631-220 are based in Ronkonkoma, New York, primarily served by T-Mobile.

Recently looked-up numbers in 631-220

• 631-220-9087

More about this region

Area code 631 directory · About area code 631 · Get a NY phone number

Last updated: May 14, 2026