AS203017 — HAMBURGWASSER Hamburger Wasserwerke GmbH

AS203017 announces 1 IPv4 prefixes covering 256 addresses and 1 IPv6 prefixes.

About this network

HAMBURGWASSER is the autonomous system for Hamburger Wasserwerke GmbH.

What it's used for

• The space carries a single IPv4 prefix, 193.53.23.0/24, and one IPv6 prefix, 2001:678:154::/48.
• With 256 IPv4 addresses and 2 observed neighbours, the low neighbour count relative to the address space indicates a small, self-contained network rather than a transit provider.
• As the municipal water utility for Hamburg, this AS supports internal corporate operations, including administrative systems and site connectivity for water infrastructure management.

Notable

• The RDAP registrant for the announced prefix is ScaleUp Technologies GmbH & Co. KG with netname DE-INTERNET4YOU-19990803, which differs from the AS holder HAMBURGWASSER Hamburger Wasserwerke GmbH.
• The address inventory consists of a single /24 block and a single /48 IPv6 prefix, representing a minimal footprint typical of a specific department or site within a larger corporate estate.

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

Announced prefixes

• 193.53.23.0/24
• 2001:678:154::/48

Upstream networks

• AS29014 ScaleUp Technologies GmbH & Co. KG
• AS3320 Deutsche Telekom AG

Adjacent networks

• AS29014 ScaleUp Technologies GmbH & Co. KG
• AS3320 Deutsche Telekom AG

Routing security

• RPKI: 2 valid, 0 invalid and 0 not-found announcements; 2 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 2 route objects.
• Listed in as-sets: AS-INTERNET4YOU, AS-INTERNET4YOU-V6, AS-SCALEUP, AS3320:AS-DTAG, AS3320:AS-DTAG-V6.