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


Lakeshore - Fasan & Russel Woods Now Fibre Ready

Tuesday 21st of March 2017 03:19 PM

Our work in Lakeshore continues. We've added Fasan Cres. and just about all of Russel Woods Dr.

Lakeshore Fibre News - Elmgrove & East Pike

Wednesday 8th of March 2017 11:44 AM

MNSi Telecom has just opened up a new area of Lakeshore for Fibre Internet services. Elmgrove Dr. and East Pike Creek Rd.

Fibre Availability In Apartment Buildings

Wednesday 8th of March 2017 11:40 AM

Tell your landlord to give us a call at 519-258-2333 to arrange to get your building hooked up for Fibre availability at no charge to the building owner.

Windsor Fibre News - Meldrum Gets Fibre

Wednesday 8th of March 2017 10:26 AM

Residents along the east side of Meldrum Road from Ypres to Tecumseh can now enjoy Fibre speeds.

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.


Support Articles


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MNSi services are subject to our Internet Access Agreement and other policies. Please review our Documents & Polices for details.