Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 631 [Rate centres in NPA 631] [Dial plan for NPA 631]

NXX: 638

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-638 A Stony Brook NY STKTNYSKDS0  9104 VERIZON NEW YORK INC. 132      
631-638 0 Stony Brook NY STKTNYSKDS0  9104 VERIZON NEW YORK INC. 132   2005-11-30   
631-638 1 Stony Brook NY STKTNYSKDS0  9104 VERIZON NEW YORK INC. 132   2005-11-30   
631-638 2 Stony Brook NY STKTNYSKDS0  9104 VERIZON NEW YORK INC. 132   2005-11-30   
631-638 3 Stony Brook NY STKTNYSKDS0  9104 VERIZON NEW YORK INC. 132   2005-11-30   
631-638 4 Stony Brook NY STKTNYSKDS0  9104 VERIZON NEW YORK INC. 132   2005-11-30   
631-638 5 Stony Brook NY NYCMNY83DSR  8340 XO NEW YORK, INC. 132   2007-04-20   
631-638 6 Stony Brook NY GRCYNYGCX0Y  3864 CTC COMMUNICATIONS CORP. - NY 132   2006-12-01   
631-638 7 Stony Brook NY STKTNYSKDS0  9104 VERIZON NEW YORK INC. 132   2009-06-29   
631-638 8 Stony Brook NY STKTNYSKDS0  9104 VERIZON NEW YORK INC. 132   2009-06-29   
631-638 9 Stony Brook NY NYCMNY37XAX  506J TWILIO INTERNATIONAL INC 132   2020-10-25   

Last updated: Tue, 04 May 2021 15:04:27 UTC

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