519-258-2333 · 1-888-310-6674

MNSi Support

Allow our professional and courteous staff to help you!

Customer Service


If you have questions about billing or payments, our customer service staff is waiting to help you during normal business hours. When calling for customer service press option 1.

Monday to Friday 8:00 AM to 6:00 PM
Saturday 9:00 AM to 5:00 PM
Sunday Closed
Chatham: 519-436-1199
London: 519-433-4811
Sarnia: 519-344-2237
Windsor: 519-258-2333
Toll Free: 1-888-310-6674
Business Sales: 519-985-8415
Customer Service: accounts@mnsi.net
Business Sales: sales@mnsi.net
Billing Information and FAQ

Technical Support


If you are having issues with your service or you have a question of a technical nature our technical support staff is waiting to help you 24/7. When calling for tech support press option 2.

Chatham: 519-436-1199
London: 519-433-4811
Sarnia: 519-344-2237
Windsor: 519-258-2333
Toll Free: 1-888-310-6674
Business Sales: 519-985-8415
E-mail: support@mnsi.net
Knowledge Base & FAQ

Speed Test

If you need to check your connection speed you can use:

Test your Internet connection speed at Speedtest.net

Underground Fibre Construction

For information about MNSi's underground fibre construction click here

MNSi News


South Windsor Fibre News - February 2017

Monday 6th of February 2017 02:22 PM

MNSi Telecom is excited to release a new Fibre area in South Windsor today. Streets receiving service include Socrates Crescent and Court, Aristotle Crescent and Court, Lounsborough Court and the southern side of Lounsborough Street to Holburn Street.

South Windsor Fibre News - January 2017

Wednesday 1st of February 2017 12:31 PM

We've got more Fibre News today for residents along Dominion in South Windsor. We've added West Grand Blvd. south to Richardie from Dominion to Academy - and along Dominion and Longfellow to Cabana Rd.

Lakeshore Fibre News - January 2017

Wednesday 1st of February 2017 12:21 PM

MNSi is excited to announce Fibre services in the Russell Woods area of Lakeshore. Fibre has just been opened along Pearl Street and Russell Woods Road, east from Elmgrove Drive.

Walker Gates Fibre News - January 2017

Wednesday 1st of February 2017 11:16 AM

Today MNSi Telecom released a new Fibre area at Fontana Ave., Sassafras Ave. and the East side of Unicorn Ave. - all North of Ducharme St.

MNSi Reduces Fibre Prices

Monday 30th of January 2017 02:14 PM

MNSi Telecom is excited to announce a reduction in pricing for most of its Fibre packages, effective Feb. 1, 2017. Select Fibre packages will drop anywhere from $25 to $50 per month depending on the package.


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