548 area code
London area, Eastern Time.Area code 548 covers London, Kitchener-Waterloo, Windsor and 167 more places in Ontario, on Eastern Time. 226, 382 and 519 cover the same area.
Right now in London
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer)
Calling hours: Mon to Fri, 9 AM to 9:30 PM · Sat to Sun, 10 AM to 6 PM (Canada's CRTC rules)
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Where 548 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 548 has 170. Each one's share is how many 548 numbers start there.
- London7%
- Kitchener-Waterloo5%
- Windsor4%
- Brantford3%
- Guelph2%
- Sarnia2%
Also: Listowel, Leamington, Mount Forest, Chatham, Essex, Owen Sound, Simcoe, St. Thomas, Woodstock, Orangeville, Goderich, Stratford + 152 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 548 number?
Sales calls to homes and cell phones have legal hours, set by Canada's CRTC rules. Hold every 548 number to them, since you can't tell a work line from a personal cell.
What applies to 548Mon to Fri, 9 AM to 9:30 PM · Sat to Sun, 10 AM to 6 PM
- Canada (CRTC)Mon to Fri, 9 AM to 9:30 PM · Sat to Sun, 10 AM to 6 PMApplies to calls to businesses too. Some provinces add rules the tool doesn't apply, like British Columbia's ban on calls on statutory holidays.CRTC Unsolicited Telecommunications Rules, Part III, s. 23 (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
548 and 226, 382 and 519
548 went into service on June 4, 2016. 548, 226, 382 and 519 cover the same area, so new numbers can get any of them and neighbors can have different area codes. 548 holds 24% of the area's exchanges; 226 holds the most. Local calls take all 10 digits.
- 1953519 overlay
- 2006226 overlay
- 2016548 starts
- 2023382 overlay
Source: NANPA area code database
Calling a list of 548 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
548 area code FAQ
What area code is 548?
548 is an Ontario area code for London, Kitchener-Waterloo, Windsor, Brantford and 166 more places.
What time zone is the 548 area code in?
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer).
Is 226 the same as 548?
Same area, different code. 548, 226, 382 and 519 cover the same area (an overlay), so new numbers can get any of them and local calls take all 10 digits.
What are the calling hours for 548 numbers?
Mon to Fri, 9 AM to 9:30 PM · Sat to Sun, 10 AM to 6 PM, local time, under Canada's CRTC rules.
When did the 548 area code start?
On June 4, 2016.
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