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.

NPA: 351 [Rate centres in NPA 351] [Dial plan for NPA 351]

<< 1 2 3 4 5 6 7 8 9

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
351-888 8 Merrimac MA   892D ONVOY, LLC - MA 128   2014-10-30   
351-888 9 Merrimac MA   321J HD CARRIER LLC 128   2016-05-12   
351-900 A Ipswich MA SOVLMAABAMD  965H FRACTEL, LLC 128      
351-900 0 Ipswich MA   965H FRACTEL, LLC 128   2020-07-06   
351-900 1 Ipswich MA   892D ONVOY, LLC - MA 128   2021-03-07   
351-900 2 Ipswich MA   892D ONVOY, LLC - MA 128   2021-03-07   
351-900 4 Ipswich MA   624H ONVOY SPECTRUM, LLC 128   2021-02-25   
351-900 6 Ipswich MA   892D ONVOY, LLC - MA 128   2021-11-13   
351-900 7 Ipswich MA   892D ONVOY, LLC - MA 128   2020-08-21   
351-900 8 Ipswich MA   892D ONVOY, LLC - MA 128   2020-08-21   
351-900 9 Ipswich MA   965H FRACTEL, LLC 128   2020-07-06   
351-920 A Lowell MA XXXXXXXXXXX  9102 VERIZON NEW ENGLAND INC. 128      
351-999 A Manchester MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
351-999 0 Manchester MA   515J IP HORIZON LLC 128   2015-10-26   
351-999 1 Manchester MA   321J HD CARRIER LLC 128   2016-05-12   
351-999 2 Manchester MA   321J HD CARRIER LLC 128   2016-05-12   
351-999 3 Manchester MA   321J HD CARRIER LLC 128   2016-05-12   
351-999 4 Manchester MA   321J HD CARRIER LLC 128   2016-05-12   
351-999 5 Manchester MA   321J HD CARRIER LLC 128   2016-05-12   
351-999 6 Manchester MA   321J HD CARRIER LLC 128   2016-05-12   
351-999 7 Manchester MA   892D ONVOY, LLC - MA 128   2016-03-28   
351-999 8 Manchester MA   892D ONVOY, LLC - MA 128   2016-03-28   
351-999 9 Manchester MA   892D ONVOY, LLC - MA 128   2015-08-23   

<< 1 2 3 4 5 6 7 8 9

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.