Allstream Inc. is a business communications provider based in Mississauga, Ontario, Canada, that provides Internet Protocol (IP) connectivity, managed IP services, unified communications and voice services to its customers in the United States and Canada.

In the 1980s, they changed the name to Unitel Communications in a bid to offer commercial long distance service.

Allstream emerged in its current form in 2012 when its latest owners Manitoba Telecom Services (MTS) split off the commercial side of their offerings.

Unitel underwent turnaround management by CEO Bill Catucci, allowing it to be renamed AT&T Canada Long Distance Services.

Following Zayo Group’s privatization in 2020,[9] led by EQT and Digital Colony, a new board of directors was established for Allstream.