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.

OCN: 2319 FRONTIER CALIFORNIA INC.

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NPA-NXX BLOCK Rate Centre Region Switch LATA Eff date Disc date Map
909-484 A Upland CA CCMNCAXFDS1  730     map
909-501 A San Bernardino CA   730     map
909-501 0 San Bernardino CA   730 2015-10-04     
909-517 A Chino CA CHNOCAXF62J  730     map
909-548 A Chino CA CHNOCAXF62J  730     map
909-548 0 Chino CA   730      
909-548 2 Chino CA   730      
909-548 3 Chino CA   730      
909-548 4 Chino CA   730      
909-548 6 Chino CA   730      
909-548 7 Chino CA   730      
909-558 A Redlands CA RDLDCAXF79K  730     map
909-579 A Upland CA UPLDCAXF98G  730     map
909-579 0 Upland CA   730      
909-579 1 Upland CA   730      
909-579 4 Upland CA   730      
909-579 5 Upland CA   730      
909-579 6 Upland CA   730      
909-579 8 Upland CA   730      
909-581 A Upland CA CCMNCAXFDS1  730     map
909-581 0 Upland CA   730      
909-581 1 Upland CA   730      
909-581 3 Upland CA   730      
909-590 A Chino CA CHNOCAXF62J  730     map
909-591 A Chino CA CHNOCAXF62J  730     map
909-592 A Claremont-San Dimas CA SNDMCAXF59C  730     map
909-593 A Claremont-San Dimas CA LVRNCAXF59H  730     map
909-594 A Diamond Bar CA WLNTCAXFDS0  730     map
909-595 A Diamond Bar CA WLNTCAXFDS0  730     map
909-596 A Claremont-San Dimas CA LVRNCAXF59H  730     map
909-597 A Chino CA LSSRCAXF59J  730     map
909-598 A Diamond Bar CA WLNTCAXFDS0  730     map
909-599 A Claremont-San Dimas CA SNDMCAXF59C  730     map
909-603 A Claremont-San Dimas CA CLMTCAXF62G  730     map
909-605 A Ontario CA ONTRCAXMDS0  730     map
909-605 0 Ontario CA   730      
909-605 1 Ontario CA   730      
909-605 2 Ontario CA   730      
909-605 4 Ontario CA   730      
909-605 5 Ontario CA   730      
909-605 6 Ontario CA   730      
909-605 7 Ontario CA   730      
909-605 8 Ontario CA   730      
909-605 9 Ontario CA   730      
909-606 A Chino CA LSSRCAXF59J  730     map
909-608 A Upland CA UPLDCAXF98G  730     map
909-612 A Diamond Bar CA DMBRCAXF86M  730     map
909-612 0 Diamond Bar CA   730      
909-612 1 Diamond Bar CA   730      
909-612 2 Diamond Bar CA   730      

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Last updated: Sun, 12 Nov 2017 02:06:07 UTC

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