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Canada · Ontario · Eastern Ontario
343 Area Code
Ottawa & Eastern Ontario, Canada
Area code 343 is a Canadian phone area code serving Ottawa and communities across Eastern Ontario. 343 is the newer Eastern Ontario overlay, introduced in 2010 to add capacity to the long-established 613 region. This guide therefore emphasizes Ottawa as the largest reference city while keeping the wider Eastern Ontario footprint visible.
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ProvinceOntario
Primary cityOttawa
Local time
Ottawa weather16.7°CMainly Sunny
Overlay codes343 / 613 / 753
IntroducedMay 2010
Local dialing10-digit dialing
Weather data: Environment and Climate Change Canada
Key facts
343 area code Ontario: key facts
Numbering source: Canadian Numbering Administrator (CNA) · area-code relief history.
Location
Where is area code 343?
For 343, the key location point is that Ottawa is only the strongest city reference. The code was added over the existing 613 geography, so Kingston, Cornwall, Belleville, Brockville, Pembroke and other Eastern Ontario communities belong in the picture too.
Ottawa
Ontario, Canada
343Eastern Ontario
For 343, the key location point is that Ottawa is only the strongest city reference. The code was added over the existing 613 geography, so Kingston, Cornwall, Belleville, Brockville, Pembroke and other Eastern Ontario communities belong in the picture too.
343 / 613 / 753
343 is the newer Eastern Ontario overlay, introduced in 2010 to add capacity to the long-established 613 region. This guide therefore emphasizes Ottawa as the largest reference city while keeping the wider Eastern Ontario footprint visible.
Interactive map
343 area code map
The 343 map is intentionally broad because the code was never an Ottawa-only assignment. It visualizes representative communities across the overlay region to show the scale inherited from 613 in 2010.
Ottawa Kingston Belleville Brockville Cornwall Pembroke
343
Ottawa & Eastern Ontario
Ottawa utilities
Time, weather and travel
For 343, the Ottawa visitor guide connects a relatively recent telephone overlay with stable capital-city landmarks and current activities. The content focuses on what a visitor can actually do rather than inventing 343-specific neighbourhoods.
01
343 time zone
343 uses the Eastern Time reference shared across the Ottawa-centred numbering region. The page focuses on the current Ottawa clock while noting that a mobile or VoIP 343 user can physically be somewhere else.
02Ottawa weather
Ottawa is used as the 343 weather reference because it is the dominant local search location for this newer overlay. The observation is labelled as Ottawa weather so it is not mistaken for a single condition covering all of Eastern Ontario.
03Ottawa Airport (YOW)
The 343 airport guide uses YOW as the practical travel anchor for Ottawa while making clear that the telephone code extends far beyond the airport's catchment. The page is about Ottawa access, not an airport-defined area-code boundary.
04Things to do in Ottawa
For 343, the Ottawa visitor guide connects a relatively recent telephone overlay with stable capital-city landmarks and current activities. The content focuses on what a visitor can actually do rather than inventing 343-specific neighbourhoods.
Ottawa events
What's happening in Ottawa?
343 event content is Ottawa-centred because that is the strongest local intent, but the area-code context remains Eastern Ontario. Live listings answer what is happening now without implying that every 343 subscriber is in the capital.
Unknown 343 call?
Check a 343 number
Received a call from a 343 number?
A 343 number is part of a normal Eastern Ontario overlay introduced in 2010. Its newer age is not a spam signal, so the lookup prioritizes the complete number, public complaint data and community reports rather than the area code alone.
FAQ
343 area code questions
Where is the 343 area code?
For 343, the key location point is that Ottawa is only the strongest city reference. The code was added over the existing 613 geography, so Kingston, Cornwall, Belleville, Brockville, Pembroke and other Eastern Ontario communities belong in the picture too.
What area code is 343?
343 is the newer Eastern Ontario overlay, introduced in 2010 to add capacity to the long-established 613 region. This guide therefore emphasizes Ottawa as the largest reference city while keeping the wider Eastern Ontario footprint visible.
Is 343 a Canada area code?
343 is the newer Eastern Ontario overlay, introduced in 2010 to add capacity to the long-established 613 region. This guide therefore emphasizes Ottawa as the largest reference city while keeping the wider Eastern Ontario footprint visible. Area code 343 is part of Canada's North American Numbering Plan and is assigned within Ontario.
Is 343 an Ottawa area code?
For 343, the key location point is that Ottawa is only the strongest city reference. The code was added over the existing 613 geography, so Kingston, Cornwall, Belleville, Brockville, Pembroke and other Eastern Ontario communities belong in the picture too. Ottawa is the main city reference, while the current numbering geography is shared with 613 and 753 across Eastern Ontario.
What area codes overlay 343?
343 is the newer Eastern Ontario overlay, introduced in 2010 to add capacity to the long-established 613 region. This guide therefore emphasizes Ottawa as the largest reference city while keeping the wider Eastern Ontario footprint visible. The current Eastern Ontario overlay complex is 343 / 613 / 753.
What time zone is area code 343 in?
343 uses the Eastern Time reference shared across the Ottawa-centred numbering region. The page focuses on the current Ottawa clock while noting that a mobile or VoIP 343 user can physically be somewhere else.
Is area code 343 a scam?
A 343 number is part of a normal Eastern Ontario overlay introduced in 2010. Its newer age is not a spam signal, so the lookup prioritizes the complete number, public complaint data and community reports rather than the area code alone.
Why this guide is different
Understanding 343 beyond the three digits
343 was introduced in 2010 as an overlay on the long-established 613 region, adding numbering capacity across Eastern Ontario without dividing the territory.
The geography behind the code
Ottawa is the strongest city reference, but the 343 geography extends through a much broader Eastern Ontario area that also includes centres such as Kingston, Cornwall, Belleville, Brockville and Pembroke. The code should be read as a newer layer over an existing regional numbering map, not as an Ottawa-only code created for one municipality.
Why the local information is framed this way
Ottawa is used for practical local utilities because it is the largest city and dominant search anchor, while regional pages keep the wider Eastern Ontario scope visible. This is why the supporting map, clock, weather, airport and event pages use the geographic scope they do instead of cloning another area-code site's assumptions.
What a phone number cannot establish
A newer 343 caller ID is neither suspicious nor trustworthy by itself; the complete phone number and call context provide the useful evidence. Area-code information is useful for numbering context, but it should never be treated as live location, caller identity or proof of trustworthiness.
Explore the area code
More about 343
Phone Number
Check a 343 phone number and available call reports
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Location
Where area code 343 fits geographically
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Map
Interactive map built for the 343 numbering geography
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Time zone
Current reference time and time rules used by the 343 guide
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Weather
Current Ottawa conditions for the 343 guide
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Airports
Ottawa International Airport (YOW) in the 343 guide
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Things to do
Ottawa attractions and weekend ideas for the 343 guide
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Events
Current Ottawa events connected with the 343 guide
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