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631 Area Code - Map, Phone Lookup, Time Zone | Wirefly

NPA NXX City Usage Company Name NXX Introduced D... 631 200 Bayport Landline Mci Worldcom Communications Inc. ‑ Ny 12/08/2003 631 200 Blue Point Landline Mci Worldcom Communications Inc. ‑ Ny 12/08/2003 631 200 Sayville Landline Mci Worldcom Communications Inc. ‑ Ny 12/08/2003

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