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: 840 [Rate centres in NPA 840] [Dial plan for NPA 840]

Block: A

<< 1 2

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-251 A Redlands CA   6529 T-MOBILE USA, INC. 730   2024-03-24   
840-252 A Mentone CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
840-253 A Calimesa CA   6529 T-MOBILE USA, INC. 730   2024-04-27   
840-254 A Rialto CA   649C ONVOY, LLC - CA 730   2024-05-09   
840-255 A San Bernardino CA   649C ONVOY, LLC - CA 730   2024-05-09   
840-256 A Upland CA   6529 T-MOBILE USA, INC. 730   2024-06-01   
840-257 A Colton CA   6529 T-MOBILE USA, INC. 730   2024-06-01   
840-284 A Chino CA COVNCAXFX3Y  649C ONVOY, LLC - CA 730      
840-300 A Redlands CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-333 A Pomona CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-336 A Colton CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-345 A Pomona CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-356 A Arrowhead CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-400 A Ontario CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-444 A Arrowhead CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-465 A Chino CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-466 A Upland CA LSANCAJWJMD  516J TON80 COMMUNICATIONS, LLC 730      
840-500 A Big Bear City CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-587 A San Bernardino CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-588 A Diamond Bar CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-600 A Colton CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-666 A Fontana CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-677 A Etiwanda CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-688 A Crestline CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-699 A Ontario CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-777 A Pomona CA LSANCAJWHMD  145J TERRA NOVA TELECOM INC. 730      
840-788 A Fontana CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-799 A Rialto CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-800 A Upland CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-804 A Claremont-San Dimas CA COVNCAXFX3Y  649C ONVOY, LLC - CA 730   2024-01-23   
840-837 A Pomona CA LSANCAJWJMD  516J TON80 COMMUNICATIONS, LLC 730      
840-877 A Marshall CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-888 A Redlands CA LSANCAJWHMD  145J TERRA NOVA TELECOM INC. 730      
840-899 A Highland CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-900 A Rialto CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-977 A Claremont-San Dimas CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-999 A Upland CA LSANCAJWHMD  145J TERRA NOVA TELECOM INC. 730      

<< 1 2

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.