AS12810 — VIPNET-AS Internet Service Provider

AS12810 announces 21 IPv4 prefixes covering 132,352 addresses and 1 IPv6 prefixes.

About this network

132,352 addresses in 21 prefixes, every sampled one of them named, all through a single neighbour.

What it's used for

• A Croatian national operator. 132,352 addresses across 21 IPv4 prefixes, one IPv6 prefix, and one observed BGP neighbour.

Notable

• The largest block is 37.244.128.0/17, followed by three /18s.
• Dated netnames run HR-A1-20100128, HR-A1-20120417 and HR-A1-20120911; two others are named A1HRpool and A1HRPool2.
• All eighteen sampled addresses returned a name, every one of the form srv-37-244-160-0.static.a1.hr.
• The AS handle is VIPNET-AS Internet Service Provider.

Interesting

• Eighteen of eighteen addresses answering is the highest hit rate in this range, and every name follows one template. That is a network whose reverse zones are generated for the whole allocation rather than for the hosts somebody remembered — which is the difference between DNS as infrastructure and DNS as an afterthought.
• One neighbour for a national operator with 132,352 addresses means the routing archive sees this AS behind its own group's backbone. The access network and the transit network are different autonomous systems, and only one of them faces the wider internet.
• A1HRpool and A1HRPool2 use an underscore and inconsistent capitalisation, sitting beside three precisely dated netnames from the same holder. Two people, or two decades, filled in the same field. The AS handle still carries the brand the company traded under before it was renamed.

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

Announced prefixes

• 31.45.128.0/18
• 31.45.192.0/19
• 31.45.224.0/20
• 31.45.240.0/24
• 31.45.242.0/23
• 31.45.244.0/22
• 31.45.248.0/21
• 37.244.128.0/17
• 77.237.96.0/19
• 78.40.0.0/23
• 80.75.52.0/22
• 91.223.65.0/24
• 94.250.128.0/18
• 95.168.96.0/19
• 109.227.0.0/18
• 212.15.160.0/20
• 212.15.176.0/21
• 212.15.184.0/23
• 212.15.187.0/24
• 212.15.188.0/22
• 212.91.96.0/19
• 2a00:1bb8::/32

Upstream networks

• AS15994 A1 Hrvatska d.o.o.

Adjacent networks

• AS15994 A1 Hrvatska d.o.o.