Here are a list of links to IXP and Datacenter maps, and to other maps that we have found really useful.
Send us links that you do not see here to help us improve our “map list”
IXP and Datacenter Maps
https://prefix.pch.net/applications/ixpdir/
https://www.euro-ix.net/location-of-ixps
http://www.internetexchangemap.com/
http://www.datacentermap.com/ixps.html