The company is an IP connectivity supplier ranked number one globally according to Kentik Market Intelligence.

The company owns and operates a large fiber network, spanning 75,000 km and connecting 320 points of presence spread across more than 120 cities in 35 countries as of March 2021.

[15] The multi-terabit optical network will allow Facebook to serve users in Africa, Middle East and Europe from a data center in Luleå, Sweden, near the Arctic Circle.

In November 2011 Arelion and Infinera announced completion of the world's first Terabit optical transmission based on 500Gbit/s super-channels.

Since 2008, Arelion has donated free service to the Wikimedia Foundation, being the only global tier 1 carrier to do so, as of February 2012.