AS15366 — DNSNET German Internet Service Providers

AS15366 announces 6 IPv4 prefixes covering 30,720 addresses and 1 IPv6 prefixes.

About this network

A company name with a colon in it, and five blocks named after a company that no longer holds them.

What it's used for

• A regional internet provider. Six IPv4 prefixes and one IPv6 /29 announced from Germany, thirty thousand addresses, across one hundred and thirteen observed BGP neighbours.

Notable

• The holder's name contains a colon, punctuation that is legal in a company name and awkward everywhere else, and the two halves of it are both protocol words.
• Five netnames share a prefix naming a different company, each followed by the date the block was allocated: one written as six digits and four as eight.
• The sixth netname is the company's own name plus the word dialin, a product that predates broadband.
• Eighteen addresses were queried for reverse DNS and none returned a name.
• One hundred and thirteen neighbours is a peering count, not a transit count.

Interesting

• That neighbour count against thirty thousand addresses is the shape of a provider that peers widely at exchanges rather than buying transit from a few carriers. It is how regional providers in this market keep costs down.
• Dates baked into netnames are unintended documentation. They record when each block was handed out, and the two formats show the convention changed partway through.
• A provider serving broadband subscribers usually names its customer addresses in reverse. None of the sampled addresses answered at all, which is unusual at this size.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 79.140.112.0/20
• 178.20.88.0/21
• 212.86.32.0/19
• 212.91.224.0/19
• 213.220.144.0/20
• 217.70.128.0/20
• 2a03:fc80::/29

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS3320 Deutsche Telekom AG
• AS34549 meerfarbig GmbH & Co. KG
• AS37721 Virtual Technologies & Solutions
• AS212024 Marc Schmitt
• AS34019 Hivane Association
• AS24482 SG.GS
• AS1836 green.ch AG
• AS48362 Stadtwerke Feldkirch
• AS33891 Core-Backbone GmbH
• AS12779 IT.Gate S.p.A.
• AS20485 Joint Stock Company TransTeleCom
• AS57463 NetIX Communications JSC
• AS37100 SEACOM Limited
• AS34800 Securebit AG
• AS29632 Netassist International EOOD
• AS213241 TECHIT.BE SRL
• AS9002 RETN Limited
• AS56662 Marcin Gondek
• AS17639 Converge ICT Solutions Inc.
• AS58057 Securebit AG

Downstream networks

• AS198904 50Hertz Transmission GmbH

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS1299 Arelion Sweden AB
• AS198904 50Hertz Transmission GmbH
• AS6939 Hurricane Electric LLC
• AS3320 Deutsche Telekom AG
• AS34549 meerfarbig GmbH & Co. KG
• AS37721 Virtual Technologies & Solutions
• AS212024 Marc Schmitt
• AS1836 green.ch AG
• AS20485 Joint Stock Company TransTeleCom
• AS34800 Securebit AG
• AS48362 Stadtwerke Feldkirch
• AS34019 Hivane Association
• AS24482 SG.GS
• AS33891 Core-Backbone GmbH
• AS12779 IT.Gate S.p.A.
• AS37100 SEACOM Limited
• AS57463 NetIX Communications JSC
• AS29632 Netassist International EOOD
• AS17639 Converge ICT Solutions Inc.
• AS12859 BIT BV
• AS56662 Marcin Gondek
• AS213241 TECHIT.BE SRL
• AS58057 Securebit AG
• AS9002 RETN Limited

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• DE-CIX Dusseldorf — Düsseldorf, Germany
• DE-CIX Munich — Munich, Germany
• DE-CIX Hamburg — Hamburg, Germany
• Berlin Commercial Internet Exchange — Berlin, Germany