AS12625 — AS12625 GERMANY

AS12625 announces 1 IPv4 prefixes covering 8,192 addresses and 1 IPv6 prefixes.

About this network

A stock exchange with 106 BGP neighbours, announcing one /19 as eight separate pieces.

What it's used for

• Trading and market-data connectivity. 8,192 addresses in eight IPv4 prefixes, one IPv6 prefix, and 106 observed BGP neighbours.

Notable

• All eight blocks carry the same netname, DBAG, with contacts Deutsche Boerse AG NOS CCI Team and a dedicated abuse role.
• The announcements are 193.29.64.0/21, 193.29.72.0/23, 193.29.74.0/24, 193.29.75.0/24, 193.29.76.0/23, 193.29.78.0/24, 193.29.79.0/24 and 193.29.80.0/20.
• Together they cover 193.29.64.0/19 exactly, with nothing left over and nothing overlapping.
• One sampled address of eighteen answered, as billing-test.clearstream.com.
• The IPv6 announcement is 2a00:7440::/32.

Interesting

• 106 neighbours for eight thousand addresses is the signature of an exchange rather than a network operator. Trading firms connect directly to the venue because every intermediate hop costs microseconds, so the exchange ends up peering with its own customers on a scale that would otherwise take a national carrier.
• Announcing a /19 as eight pieces when one route would carry the same traffic is usually history rather than design, but in a latency-sensitive network it can also be a way to steer particular customers down particular paths. Either way, all eight routes are carried by every router on the Internet.
• The single reverse name belongs to a test billing host at the clearing subsidiary. Reverse DNS is public, so naming a system for its function and its environment hands a stranger a starting point for free.

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

Announced prefixes

• 193.29.64.0/19
• 2a00:7440::/32

Upstream networks

• AS198949 Radware Ltd
• AS6939 Hurricane Electric LLC
• AS3356 Level 3 Parent, LLC
• AS3257 GTT Communications Inc.
• AS34549 meerfarbig GmbH & Co. KG
• AS29632 Netassist International EOOD
• AS24482 SG.GS
• AS48362 Stadtwerke Feldkirch
• AS212024 Marc Schmitt
• AS12859 BIT BV
• AS20485 Joint Stock Company TransTeleCom
• AS37721 Virtual Technologies & Solutions
• AS1836 green.ch AG
• AS57463 NetIX Communications JSC
• AS56662 Marcin Gondek
• AS213241 TECHIT.BE SRL
• AS37100 SEACOM Limited
• AS33891 Core-Backbone GmbH
• AS34019 Hivane Association
• AS12779 IT.Gate S.p.A.

Downstream networks

• AS15814 Clearstream Services S.A.

Adjacent networks

• AS198949 Radware Ltd
• AS15814 Clearstream Services S.A.
• AS6939 Hurricane Electric LLC
• AS3356 Level 3 Parent, LLC
• AS3257 GTT Communications Inc.
• AS34549 meerfarbig GmbH & Co. KG
• AS29632 Netassist International EOOD
• AS48362 Stadtwerke Feldkirch
• AS212024 Marc Schmitt
• AS24482 SG.GS
• AS12859 BIT BV
• AS1836 green.ch AG
• AS12779 IT.Gate S.p.A.
• AS57463 NetIX Communications JSC
• AS34019 Hivane Association
• AS37721 Virtual Technologies & Solutions
• AS56662 Marcin Gondek
• AS37100 SEACOM Limited
• AS213241 TECHIT.BE SRL
• AS33891 Core-Backbone GmbH
• AS20485 Joint Stock Company TransTeleCom

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany