Carrier & Backbones
Telekom
Vodafone DE (www.vodafone.de)
Telefónica / o2 (www.o2online.de)
Arelion / Telia Carrier (www.arelion.com)
Lumen / Level3 (www.lumen.com)
Cogent Communications (www.cogentco.com)
GTT (www.gtt.net)
Hurricane Electric (he.net)
1und1
