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.

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
548-366 A Southampton ON OWSDON594MD  888 805122    
548-367 A Tara ON OWSDON594MD  888 805122    
548-368 A Thornbury ON OWSDON594MD  888 805122    
548-369 A Wiarton ON OWSDON594MD  888 805122    
548-370 A Blenheim ON CHHMON179MD  888 805101    
548-371 A Bothwell ON CHHMON179MD  888 805101    
548-372 A Dresden ON CHHMON179MD  888 805101    
548-373 A Highgate ON CHHMON179MD  888 805101    
548-374 A Merlin ON CHHMON179MD  888 805101    
548-375 A Ridgetown ON CHHMON179MD  888 805101    
548-376 A Thamesville ON CHHMON179MD  888 805101    
548-377 A Tilbury ON CHHMON179MD  888 805101    
548-378 A Wallaceburg ON CHHMON179MD  888 805101    
548-379 A Paris ON BTFDON17DMD  888 805107    
548-380 A Acton ON GLPHON22HMD  888 805144    
548-381 A Rockwood ON GLPHON22HMD  888 805144    
548-401 A Breslau ON   888 805143    
548-402 A Elmira ON   888 805143    
548-403 A Preston ON   888 805143    
548-412 A Alvinston ON SARNON306MD  888 805128    
548-413 A Brigden ON SARNON306MD  888 805128    
548-414 A Bright's Grove ON SARNON306MD  888 805128    
548-415 A Corunna ON SARNON306MD  888 805128    
548-416 A Courtright ON SARNON306MD  888 805128    
548-417 A Oil Springs ON SARNON306MD  888 805128    
548-418 A Petrolia ON SARNON306MD  888 805128    
548-419 A Port Lambton ON SARNON306MD  888 805128    
548-420 A Sombra ON SARNON306MD  888 805128    
548-421 A Watford ON SARNON306MD  888 805128    
548-422 A Wyoming ON SARNON306MD  888 805128    
548-431 A Caledon ON OGVLON233MD  888 805117    
548-432 A Erin ON OGVLON233MD  888 805117    
548-433 A Goderich ON CLTNON055MD  888 805127    
548-434 A Owen Sound ON OWSDON594MD  888 805122    
548-435 A Beachville ON WDSTON110MD  888 805135    
548-436 A Bright ON WDSTON110MD  888 805135    
548-437 A Brownsville ON WDSTON110MD  888 805135    
548-438 A Drumbo ON WDSTON110MD  888 805135    
548-439 A Eastwood ON WDSTON110MD  888 805135    
548-441 A Embro ON WDSTON110MD  888 805135    
548-442 A Hickson ON WDSTON110MD  888 805135    
548-443 A Ingersoll ON WDSTON110MD  888 805135    
548-445 A Innerkip ON WDSTON110MD  888 805135    
548-446 A Kintore ON WDSTON110MD  888 805135    
548-447 A Norwich ON WDSTON110MD  888 805135    
548-449 A Otterville ON WDSTON110MD  888 805135    
548-450 A Princeton ON WDSTON110MD  888 805135    
548-451 A Thamesford ON WDSTON110MD  888 805135    
548-452 A Guelph ON GLPHON22HMD  888 805144    
548-453 A Woodstock ON WDSTON110MD  888 805135    

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Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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