AS12941 — INTERSAAR-AS intersaar GmbH

Network type: residential

AS12941 announces 7 IPv4 prefixes covering 12,032 addresses and 3 IPv6 prefixes.

About this network

Nine reverse names across five different domains, one of them still spelled in capitals.

What it's used for

• A German regional internet provider. 12,032 addresses across seven IPv4 prefixes, three IPv6 prefixes, and 118 observed BGP neighbours.

Notable

• Netnames span four holders: DE-INTERSAAR-20000112 and two 2015 blocks, DE-HG-20150615 for an IT services firm, SAARNET for a registered association, and HANDSHAKE-DE for another.
• The registry lookup for 192.109.53.0/24 failed, so nothing here describes that block's record.
• Nine of eighteen sampled addresses returned names across five domains, including ip-213-135-8-0.intersaar.de, dial-213-135-23-254.digitalab.de, hg-dmz2.hgcloud.de, subnet-4.saar.de and pluto.dialin.Saar.DE.

Interesting

• Two of the netnames belong to e.V. associations, the German legal form for a non-profit club. Regional internet in Germany grew partly out of hobbyist associations that registered their own address space in the 1990s, and when those groups faded their blocks were absorbed by whichever local provider was still standing. The associations remain the registered holders.
• pluto.dialin.Saar.DE is the oldest thing in the record. Uppercase domain names were normal when DNS was young, dial-up access is thirty years gone, and naming machines after planets was the house style of an entire era of system administration. It still answers.
• Even the provider's own blocks use two incompatible reverse formats, ip-213-135-8-0 and 213-135-15-255. The two run on the same /19.
• 118 neighbours from a provider serving one German region, which is what a dense national exchange fabric does to peering counts.

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

Announced prefixes

• 185.101.132.0/22
• 185.101.184.0/22
• 185.104.204.0/22
• 192.109.53.0/24
• 193.141.107.0/24
• 193.141.176.0/24
• 213.135.0.0/19
• 2a02:430::/32
• 2a06:1e40::/29
• 2a06:3380::/29

Upstream networks

• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS3320 Deutsche Telekom AG
• AS34549 meerfarbig GmbH & Co. KG
• AS5511 Orange S.A.
• AS401753 BIXCE Inc
• AS24482 SG.GS
• AS213241 TECHIT.BE SRL
• AS12779 IT.Gate S.p.A.
• AS206499 LOCIX LIMITED
• AS33891 Core-Backbone GmbH
• AS1836 green.ch AG
• AS20485 Joint Stock Company TransTeleCom
• AS37100 SEACOM Limited
• AS8551 Bezeq International Ltd.
• AS6797 GlobalConnect AB
• AS34019 Hivane Association
• AS37721 Virtual Technologies & Solutions
• AS34927 iFog GmbH
• AS50263 A-Systems Sp. z o.o.
• AS17639 Converge ICT Solutions Inc.
• AS58057 Securebit AG
• AS48362 Stadtwerke Feldkirch

Downstream networks

• AS197063 PfalzConnect GmbH
• AS202707 omnidat GmbH
• AS60400 ORBIS SE
• AS196968 Ilm-Provider UG (haftungsbeschraenkt)
• AS210521 iks Informations- und Kommunikationssysteme GmbH
• AS203536 FNOH DSL Suedheide GmbH
• AS29510 internett GmbH

Adjacent networks

• AS197063 PfalzConnect GmbH
• AS1299 Arelion Sweden AB
• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS202707 omnidat GmbH
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS60400 ORBIS SE
• AS3320 Deutsche Telekom AG
• AS206499 LOCIX LIMITED
• AS34549 meerfarbig GmbH & Co. KG
• AS5511 Orange S.A.
• AS34927 iFog GmbH
• AS196968 Ilm-Provider UG (haftungsbeschraenkt)
• AS210521 iks Informations- und Kommunikationssysteme GmbH
• AS401753 BIXCE Inc
• AS24482 SG.GS
• AS213241 TECHIT.BE SRL
• AS203536 FNOH DSL Suedheide GmbH
• AS1836 green.ch AG
• AS8551 Bezeq International Ltd.
• AS37100 SEACOM Limited
• AS6797 GlobalConnect AB
• AS33891 Core-Backbone GmbH
• AS20485 Joint Stock Company TransTeleCom
• AS12779 IT.Gate S.p.A.

Routing security

• RPKI: 10 valid, 0 invalid and 0 not-found announcements; 10 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 11 route objects.
• Listed in as-sets: AS-HURRICANEV6, AS-INTERSAAR, AS-INTERSAAR-V6, AS-MANDA-DECIX-PEERS-V4, AS-MANDA-DECIX-PEERS-V6, AS203462:AS-NVC-DECIX_FRA_RS, AS204663:AS-DECIX-LEJ-CONNECTED, AS204663:AS-DECIX-LEJ-RS, AS204663:AS-DECIX-LEJ-RS-V6, AS43252:AS-DECIX-HAM-CONNECTED, AS43252:AS-DECIX-HAM-RS, AS43252:AS-DECIX-HAM-RS-V6, AS47228:AS-DECIX-MUC-CONNECTED, AS47228:AS-DECIX-MUC-RS, AS47228:AS-DECIX-MUC-RS-V6, AS56890:AS-DECIX-DUS-CONNECTED, AS56890:AS-DECIX-DUS-RS, AS56890:AS-DECIX-DUS-RS-V6, AS6695:AS-DECIX-FRA-CONNECTED, AS6695:AS-DECIX-FRA-RS, AS6695:AS-DECIX-FRA-RS-V6.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• Neutral Internet Exchange — Amsterdam, Netherlands
• DE-CIX Dusseldorf — Düsseldorf, Germany
• DE-CIX Munich — Munich, Germany
• Local Internet Exchange Frankfurt — Frankfurt, Germany
• DE-CIX Hamburg — Hamburg, Germany