631-317 Prefix — Ronkonkoma, New York

Phone numbers starting with 631-317 are based in Ronkonkoma, New York, primarily served by T-Mobile.

Recently looked-up numbers in 631-317

• 631-317-9652

More about this region

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

Last updated: May 17, 2026