631-879 Prefix — Ronkonkoma, New York

Phone numbers starting with 631-879 are based in Ronkonkoma, New York, primarily served by T-Mobile.

Recently looked-up numbers in 631-879

• 631-879-1298

More about this region

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

Last updated: May 15, 2026