AS12642 — LEON-AS2 LEON-AS2

AS12642 announces 2 IPv4 prefixes covering 512 addresses and 0 IPv6 prefixes.

About this network

Two /24s, one of them still carrying the name of the network it used to be.

What it's used for

• Internet access in Poland. 512 addresses in two IPv4 prefixes, and no IPv6 announced.

Notable

• 87.239.199.0/24 is netname LEON; 91.195.191.0/24 is GOLNET-PL, registered to the same company.
• Sampled addresses answer static-87-239-199-64.leon.com.pl, static-87-239-199-127.leon.com.pl and static-87-239-199-190.leon.com.pl.
• First seen in routing data at the end of October 2000, a real date rather than the floor of the archive.
• Three of six sampled addresses returned a name, all of them in the first block.

Interesting

• A block called GOLNET-PL held by a company called Leon is a small acquisition preserved in amber. Netnames survive changes of ownership because renaming a block means filing a change request for no operational benefit, so the registry ends up as a record of who used to own what.
• The reverse names spell out all four octets of the address they belong to, which makes them long, unambiguous and completely uninformative. It is the most common naming scheme on the Internet for exactly that reason: a script can generate it for any block without knowing anything about the network.
• Only the older block has reverse DNS at all. The newer one was announced and never named, which is the usual order in which these things get done and not done.

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

Announced prefixes

• 87.239.199.0/24
• 91.195.191.0/24

Upstream networks

• AS13000 Leon Sp. z o.o.

Adjacent networks

• AS13000 Leon Sp. z o.o.