AS9188 INFOSERVE-AS D-66119 Saarbruecken

AS9188 (INFOSERVE-AS) is held by INFOSERVE GmbH of Saarbrücken, a German IT systems house and managed-service provider. The registry description still carries the old postal code line D-66119 Saarbruecken. INFOSERVE began life as a regional internet service provider and has since become a data-centre and cloud operator; it is part of the eurodata group.

What it's used for

The routing evidence describes a regional hosting and managed-services network. RIS sees 6 IPv4 prefixes covering 14,592 addresses, 2 IPv6 /32s (2a02:a8::/32 and 2a0b:d1c0::/32), and 5 observed BGP neighbours. Five neighbours is a multihomed end-provider, not a carrier — INFOSERVE buys transit and peers lightly, then resells connectivity, colocation and cloud out of its own facilities rather than selling wholesale IP to other networks.

The address inventory has an interesting layered look: an older, larger 212.89.128.0/19 alongside newer, smaller RIPE blocks (31.177.120.0/21, 31.31.208.0/21, two 185.218.5x.0/22s and a single 193.23.134.0/24). Holding two separate IPv6 /32s is unusual for a network this size and generally indicates address space accumulated over time or across group entities rather than a single clean allocation.

Sampled reverse DNS resolves 31.31.208.5 to br02.ffm.eurodata.de — a border router in Frankfurt, named under the parent group's domain. That single PTR is a neat confirmation of the corporate relationship: eurodata infrastructure is numbered out of INFOSERVE's AS.

Notable

• INFOSERVE runs its own data centres in Saarbrücken; eurodata operates certified (ISO 27001 / ISO 22301) data-centre capacity in the same city.
• eurodata builds SaaS for tax advisors, SMEs and retail networks, so a good share of what this AS carries is the group's own hosted software.