Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: LWLLMAAPPSA

Remotes:

Switch Switch name Switch type
ANDVMAELRP0    RP 
BLRCMAANRP0  BILLERICA  RP 
CHFRMANORP0  CHELMSFORD  RP 
DNVSMAHIRP0  DANVERS  RP 
DRCTMAMMRP0    RP 
NCHLMAGRRP0  NORTH CHELMSFORD  RP 
TPFDMACERP0  TOPSFIELD  RP 
TYNGMAKERP1  TYNGSBORO  RP 
WSFRMADERP0  WESTFORD  RP 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
978-275 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-322 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-323 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-441 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-442 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-446 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-452 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-453 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-454 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-458 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-459 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-483 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-551 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-656 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-788 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-934 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-937 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
978-970 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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