AS13136 — INTERSTROOM-AS Hengelo, The Netherlands

AS13136 announces 1 IPv4 prefixes covering 2,048 addresses and 1 IPv6 prefixes.

About this network

An IPv6 announcement covering 128 times the standard allocation, against a single /21 of IPv4.

What it's used for

• A Dutch information technology company. 2,048 addresses in one IPv4 prefix, one IPv6 prefix, and one observed BGP neighbour.

Notable

• The IPv4 inventory is 80.85.128.0/21, netname NL-STROOM-20010815.
• The IPv6 announcement is 2a02:13d0::/29.
• The AS handle is INTERSTROOM-AS Hengelo, The Netherlands, naming a town and a country.
• Three addresses were sampled and none returned a name.

Interesting

• A /29 is the size handed out to organisations that expect to assign onward at scale, and it contains 128 of the /32 blocks a single network normally receives. Against 2,048 IPv4 addresses it is a striking mismatch, and it is the ordinary state of affairs: IPv6 was allocated on the assumption that scarcity would never return, so the two numbers in a record like this are not comparable at all.
• The handle names a specific town rather than just a country, joining a small group in this range that treat the field as an address. It is the most locational information the registry carries about this network, and nothing verifies it.
• One neighbour means everything here reaches the internet through a single provider, whatever the address space suggests about ambition.

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

Announced prefixes

• 80.85.128.0/21
• 2a02:13d0::/29

Upstream networks

• AS24875 NovoServe B.V.

Adjacent networks

• AS24875 NovoServe B.V.

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-IAF-PEERS, AS-NOVOSERVE-CUSTOMERS, AS-OXILION-PEERS, AS-XO-B, AS16243:AS-CUSTOMERS, AS16243:AS-PEERS-NDIX, AS58453:AS-EUROPEASCUST, AS58453:AS-EUROPEASCUST.