AS12897 — ENTEGAMEDIANET ENTEGA Medianet GmbH

Network type: residential

AS12897 announces 32 IPv4 prefixes covering 163,584 addresses and 4 IPv6 prefixes.

About this network

Thirty years of address allocations, each one dated in its own netname, starting in 1989.

What it's used for

• The telecoms arm of a German energy utility, serving business and residential customers. 163,584 addresses across 32 IPv4 prefixes, four IPv6 prefixes, and 155 observed BGP neighbours.

Notable

• Almost every block is named DE-HEAGMEDIANET- followed by a date: 19890522, 19930901, 19971008, 19990511, 20000104, 20020123, 20021209, 20041207, 20080605, 20100317 and 20121106.
• 134.101.16.0/20 carries the 1989 date, the oldest seen in this range.
• 141.187.0.0/16 is registered to a semiconductor company under the netname FMG-FML.
• Twelve of eighteen sampled addresses returned names, all of the form IP-085132200000.dynamic.medianet-world.de.

Interesting

• This one record is a thirty-year allocation history. Each netname carries the date the block was registered, so the sequence reads as a company growing in steps: a block in 1989, another four years later, then roughly every two or three years through 2012. Most networks give you a snapshot. This one gives you the whole timeline.
• The 1989 date predates the registry that now holds the record and predates commercial internet service in Germany. Blocks like this were handed out to research and utility networks and simply carried forward, which is why a modern regional ISP holds address space older than its business.
• A /16 named after a semiconductor manufacturer sits in the middle of the inventory. Legacy blocks move between companies far more often than their registry records get rewritten.
• The reverse names pad every octet to three digits, so hostnames sort correctly as plain text.

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

Announced prefixes

• 5.182.236.0/22
• 45.10.60.0/22
• 45.14.188.0/22
• 45.93.108.0/22
• 45.128.180.0/22
• 45.131.36.0/22
• 45.136.168.0/22
• 45.143.76.0/22
• 46.243.80.0/21
• 85.132.192.0/19
• 92.119.8.0/22
• 94.16.64.0/19
• 94.46.64.0/19
• 95.131.96.0/21
• 134.101.16.0/20
• 139.29.127.0/24
• 141.187.0.0/16
• 145.224.39.0/24
• 149.249.128.0/19
• 185.9.28.0/22
• 185.101.36.0/24
• 185.117.68.0/22
• 185.189.140.0/22
• 185.194.64.0/22
• 185.238.252.0/22
• 195.2.160.0/19
• 195.80.52.0/22
• 212.126.192.0/19
• 212.232.80.0/20
• 213.157.0.0/19
• 213.188.96.0/19
• 217.173.144.0/20
• 2001:678:804::/48
• 2001:678:ca8::/48
• 2a02:b98::/32
• 2a0e:96c0::/32

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS1299 Arelion Sweden AB
• AS3257 GTT Communications Inc.
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS3320 Deutsche Telekom AG
• AS48362 Stadtwerke Feldkirch
• AS212024 Marc Schmitt
• AS24482 SG.GS
• AS37721 Virtual Technologies & Solutions
• AS1836 green.ch AG
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS50673 Serverius Holding B.V.
• AS50300 CustodianDC Limited
• AS48185 team.blue NV
• AS3303 Swisscom (Schweiz) AG
• AS12779 IT.Gate S.p.A.
• AS20485 Joint Stock Company TransTeleCom
• AS57463 NetIX Communications JSC
• AS37100 SEACOM Limited
• AS34800 Securebit AG
• AS12552 GlobalConnect AB
• AS20766 Association "Gitoyen"
• AS34927 iFog GmbH
• AS49559 A-Systems Sp. z o.o.

Downstream networks

• AS203604 Soluvia IT-Services GmbH
• AS62434 DFS Deutsche Flugsicherung GmbH
• AS13167 Merck KGaA
• AS31517 SkodaAuto Deutschland GmbH
• AS200657 Landkreis Darmstadt-Dieburg
• AS15550 COUNT+CARE Verwaltungs GmbH
• AS39380 Paul-Ehrlich-Institut
• AS201339 Wissenschaftsstadt Darmstadt
• AS35679 Stadtverwaltung Offenbach

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS1299 Arelion Sweden AB
• AS3257 GTT Communications Inc.
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS203604 Soluvia IT-Services GmbH
• AS62434 DFS Deutsche Flugsicherung GmbH
• AS3320 Deutsche Telekom AG
• AS13167 Merck KGaA
• AS37721 Virtual Technologies & Solutions
• AS31517 SkodaAuto Deutschland GmbH
• AS50673 Serverius Holding B.V.
• AS37100 SEACOM Limited
• AS200657 Landkreis Darmstadt-Dieburg
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS50300 CustodianDC Limited
• AS212024 Marc Schmitt
• AS24482 SG.GS
• AS48185 team.blue NV
• AS48362 Stadtwerke Feldkirch
• AS34800 Securebit AG
• AS3303 Swisscom (Schweiz) AG
• AS1836 green.ch AG
• AS20485 Joint Stock Company TransTeleCom
• AS20766 Association "Gitoyen"

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• AMS-IX Amsterdam — Amsterdam, Netherlands
• DE-CIX Munich — Munich, Germany
• DE-CIX Hamburg — Hamburg, Germany