Get a business number with area code 579
Area code 579 covers Greater Montreal suburbs (overlay). Connect your own telecom account to Relay, pick a 579 number, and your team calls and texts from the browser. The telecom account carries your name.
No card required · Ready in 5 minutes
Area code 579 at a glance
Where area code 579 comes from
Overlaid on 450 since 2010. Twelve years after the split that created it, 450 was already saturated, a sign of how fast the Montreal ring developed.
What 579 covers
The same belt as 450, from Valleyfield to Sorel-Tracy by way of Laval and Longueuil. A 579 opened in Granby and one in Saint-Jérôme are two hours apart by road.
Places served by 579
Who answers the phone in 579
The ring's recent lines: renovation companies, clinics, home services and shops set up in the residential developments of the last fifteen years.
The phone day to day in 579
Same distances and same winters as 450. Being newer, 579 mostly equips businesses set up in the residential developments of the last fifteen years. Their customers are households, so calls cluster at the end of the day and on Saturday mornings, when people have time to deal with what they put off all week.
579 and its neighbours
An overlay of 450 across the whole Montreal ring. Toward the island, 514 and 438; eastward, 819. The ring's two codes dial with ten digits and carry equal weight with a regional customer.
What a 579 number changes for a business
It offers the same suburban recognition as 450 with far more availability. For a business opening several local lines, one per town served, it is the most direct route.
How to dial a 579 number
Ten-digit dialing is mandatory in the 579 area (overlaid with 450, 354).
Why a 579 number for your business?
A 579 number gives you a local presence in Greater Montreal suburbs (overlay). Calls with a local caller ID get picked up more often than an unknown or toll-free number, and your clients recognize a neighbour rather than an out-of-province cold call.
- Picked up more often than a toll-free or out-of-province number.
- Local trust: clients prefer a vendor from their region.
- Remote team: everyone calls from anywhere under the same local number.
- Easy to recall for cards, vehicles and word of mouth.
Who uses a 579 number?
Practices and professional services
Accountants, notaries, consultants: the client calls back a number they recognise, and every exchange stays attached to their file. Missed calls go back out as an automatic text instead of sitting in a mailbox nobody checks.
Shops and workshops
The phone question is short: do you have it, when do you close, what does it cost. The number rings wherever someone can answer, and texting handles the rest without tying up the counter.
Home services
Plumbers, electricians, HVAC: the whole team shares one local number, calls ring whoever's free, nothing slips.
Real estate
A local number doesn't get screened like an out-of-province one. Every call and text stays on the contact record.
Health & clinics
A voice menu routes to scheduling or billing; after hours, urgent calls go through, the rest to voicemail.
Professional services
Accountants, lawyers, advisors: every call is logged, and an AI summary lists action items after the conversation.
Sales
Reps prospect with a local caller ID — picked up more often than an unknown or toll-free number.
Retail & delivery
Order confirmations and delivery windows by SMS from the same local number customers already know.
Get a 579 number in 3 steps
- 1Connect your telecom account (Twilio or Telnyx) — your credentials are encrypted, never exposed.
- 2Pick a number with the 579 area code, or port an existing 579 number.
- 3Your team calls and texts from the browser, on a shared number.
Nearby and related area codes
Other area codes near 579 or covering the same region.
See all Canadian area codes How a virtual phone number works
Porting an existing 579 number
If you already have a 579 number, you do not have to change it. Number portability is a regulated right in Canada: your current provider cannot hold on to a number that belongs to you. The transfer goes to your own telecom account, not ours, which means the number stays in your name once it lands.
In practice you need a recent bill from the current provider and a signed authorisation. Timing depends on the line type, typically a few business days. The line keeps working during the transfer: the switch happens on an agreed date, not into a void.
What a 579 number really costs
There are two bills, and that is deliberate. Relay software comes from us, in Canadian dollars, billed per team with seats included. Telecom comes from your provider, at their published rate, on an account in your name. We do not resell the minute and we take no margin on it.
The consequence is easy to verify: you can open your provider's dashboard and see the real price of every call and every text. That is what changes as volume grows, because a hidden margin on the minute costs more and more the more you call.
Texting from a Canadian number: what to know
Since March 2025, a Canadian number used for business texting requires A2P 10DLC registration or identity verification with the carrier. Many sites still present this as an American matter: it is not, the rule also applies to texting a Canadian customer from a 579 number. The process happens on your own telecom account, with your business details, and like the number it stays yours.
579 or 450, 354: which one?
These codes cover the same territory, down to the street. Technically they are equivalent: same local zone, same rates, same ten-digit dialling. The only real difference is age. Since 579 has been in service since 2010, it reads as the most established, and it is also the hardest to get. The newer overlays offer identical reach with far better availability.
The more useful question is how many numbers you need. A business serving several cities often does better opening one per market than forcing a single number on everyone: the local listing shows the expected code, and the calls still land in the same shared inbox. Because the numbers live on your own telecom account, adding one does not mean renegotiating anything.
One last point, often forgotten: the number you display has to be the one that rings when somebody calls back. A local code on a listing followed by a callback from a placeless number cancels the whole benefit. That is why the outbound call goes out from the same 579 number as the inbound one.