AS12426 — SLOVANET-MADNET

AS12426 announces 4 IPv4 prefixes covering 5,888 addresses and 0 IPv6 prefixes.

About this network

A Slovak provider with four prefixes and one of them reserved for telephone traffic.

What it's used for

• Internet access and voice. 5,888 addresses in four IPv4 prefixes with a single observed BGP neighbour and no IPv6 announced.

Notable

• Three blocks are netname SK-SLOVANET with the allocation date appended, from SK-SLOVANET-20010223 through SK-SLOVANET-20140905.
• The fourth, 185.69.51.0/24, is netname SLOVANET-SIPVOIP — a whole /24 named for the service it carries.
• Reverse DNS runs across three domains: real-net.sk, cloudlink.sk and infra.slovanet.sk.
• The AS handle is SLOVANET-MADNET, two names joined.

Interesting

• Naming a /24 after SIP is an operational statement. Voice needs addresses that can be identified from outside — for firewall rules, for peering with other carriers, for the trunk configuration on somebody else's PBX — and the cheapest way to make a range recognisable is to put its purpose in the registry.
• Three rDNS domains and a hyphenated handle in a four-prefix AS say the same thing the netnames do. Small national providers grow by buying smaller ones, and the seams show in DNS long before anything renumbers.

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

Announced prefixes

• 185.28.144.0/22
• 185.69.48.0/23
• 185.69.51.0/24
• 217.145.192.0/20

Upstream networks

• AS8778 Slovanet a.s.

Adjacent networks

• AS8778 Slovanet a.s.