1&1
- Charts
- Europe
- Germany
- active 1
- Artfiles
- Aurologic
- AS212049 Frankfurt
- AS212049 Frankfurt IPv6
- Colt Frankfurt
- Core-Backbone Frankfurt
- Core-Backbone Nürnberg
- Dataforest
- DataPacket Frankfurt
- Deutsches Forschungsnetz
- Deutsche Glasfaser
- Deutsche Telekom
- DNS:NET Internet Service
- First-Colo
- GHOSTnet
- GTT Communications
- Hetzner Falkenstein
- Hetzner Nürnberg
- HTP
- Hurricane Electric
- IFog Frankfurt
- IP-Projects
- inexio Informationstechnologie und Telekommunikation
- Keyweb
- LumaServ
- Macarne Frankfurt
- Meerfarbig
- M-net Telekommunikations
- myLoc managed IT
- NetCologne
- Noez GRE
- NTTFRA
- OVH Limburg
- O2/Telefónica Deutschland
- Plusnet
- Plutex
- Probe Networks
- Signaltransmitter
- Speedbone
- Strato
- SYNLINQ
- TeleData
- TKRZ Stadtwerke
- TNG Stadtnetz
- Unesty
- Vegasystems
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- Versatel Deutschland
- Vodafone Deutschland
- VSE NET
- 1&1
- 23m
- 23Media
- Switzerland
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- Netherlands
- United Kingdom
- Germany
- America
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- RootServer
- DNS
- DNS Probes
- SocialMedia
- Nico
