Active Prefixes in Area Code 548

- 548-484
- Kitchener-Waterloo, Canada
- 548-342
- London, Canada
- 548-228
- New Hamburg, Canada
- 548-223
- Tavistock, Canada
- 548-225
- Burford, Canada
- 548-210
- Brantford, Canada
- 548-206
- London, Canada
- 548-219
- Kitchener-Waterloo, Canada
- 548-345
- London, Canada
- 548-340
- London, Canada
- 548-880
- Brantford, Canada
- 548-486
- London, Canada
- 548-996
- Chatham, Canada
- 548-881
- London, Canada
- 548-224
- Bothwell, Canada
- 548-288
- Kitchener-Waterloo, Canada
- 548-207
- Woodstock, Canada
- 548-480
- Kitchener-Waterloo, Canada
- 548-201
- Chatham, Canada
- 548-230
- Pelee Island, Canada
- 548-776
- Tecumseh, Canada
- 548-341
- London, Canada
- 548-780
- Emeryville, Canada
- 548-886
- Chatham, Canada
- 548-209
- Guelph, Canada
- 548-980
- Goderich, Canada
- 548-770
- Woodslee, Canada
- 548-688
- London, Canada
- 548-218
- Galt, Canada
- 548-343
- London, Canada
- 548-689
- London, Canada
- 548-217
- London, Canada
- 548-781
- McGregor, Canada
- 548-998
- Tillsonburg, Canada
- 548-690
- London, Canada
- 548-216
- London, Canada
- 548-485
- London, Canada
- 548-388
- London, Canada
- 548-222
- Palmerston, Canada
- 548-220
- Harriston, Canada
- 548-205
- St. Thomas, Canada
- 548-214
- Simcoe, Canada
- 548-483
- Kitchener-Waterloo, Canada
- 548-883
- Kitchener-Waterloo, Canada
- 548-333
- Kitchener-Waterloo, Canada
- 548-774
- Maidstone, Canada
- 548-882
- Brantford, Canada
- 548-213
- Orangeville, Canada
- 548-215
- Stratford, Canada
- 548-349
- London, Canada
- 548-208
- Owen Sound, Canada
- 548-772
- Essex, Canada
- 548-887
- Woodstock, Canada
- 548-782
- Pleasant Park, Canada
- 548-771
- Stoney Point, Canada
- 548-481
- Kitchener-Waterloo, Canada
- 548-482
- London, Canada
- 548-221
- Mitchell, Canada
- 548-778
- Kingsville, Canada
- 548-348
- London, Canada
- 548-347
- London, Canada
- 548-995
- Sarnia, Canada
- 548-888
- London, Canada
- 548-999
- Brantford, Canada
- 548-784
- Leamington, Canada
- 548-229
- Watford, Canada
- 548-346
- London, Canada
- 548-204
- Windsor, Canada
- 548-227
- Elmira, Canada
- 548-898
- Kitchener-Waterloo, Canada
- 548-344
- London, Canada
- 548-988
- Guelph, Canada
- 548-588
- London, Canada
- 548-885
- Brantford, Canada
- 548-203
- Sarnia, Canada
- 548-800
- Brantford, Canada
- 548-786
- Wheatley, Canada
- 548-775
- Amherstburg, Canada
- 548-783
- Comber, Canada
- 548-202
- Clinton, Canada
- 548-997
- Sarnia, Canada
- 548-785
- Pelee Island, Canada
- 548-212
- Kitchener-Waterloo, Canada
- 548-777
- La Salle, Canada
- 548-788
- London, Canada
- 548-779
- Belle River, Canada
- 548-231
- Norwich, Canada
- 548-773
- Harrow, Canada