AS12639 — MARKASON-AS

AS12639 announces 2 IPv4 prefixes covering 768 addresses and 0 IPv6 prefixes.

About this network

768 addresses where every sampled one calls itself a gateway.

What it's used for

• Corporate connectivity in Ukraine. 768 addresses in two IPv4 prefixes, two observed BGP neighbours, and no IPv6 announced.

Notable

• The two announcements are 194.31.248.0/23 and 91.231.99.0/24.
• The netnames are MARKASON-UA and MARKASON-UA-2, numbered rather than dated.
• All six sampled addresses returned a name, and every one of them is gw-<octet>.kasta.ua — gw-248, gw-249 and gw-99.
• The reverse zone is on kasta.ua, a name that appears nowhere in the registry record.

Interesting

• The number in each name is the third octet of the block it sits in, so 194.31.248.0/23 answers gw-248 and gw-249 while 91.231.99.0/24 answers gw-99. Every address in a block gets the same name, which makes the zone a wildcard with a per-block label rather than a record for each machine.
• Calling all of them gw says the operator thinks of these as gateway addresses rather than hosts. It is a reasonable description of a small corporate range where the public addresses sit on the edge and everything real lives behind them.
• The netnames use the other convention available in the registry: a bare name for the first block and a -2 suffix for the next. That records the order the blocks arrived and nothing about when, which is less useful to a reader and easier for whoever fills in the form.

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

Announced prefixes

• 91.231.99.0/24
• 194.31.248.0/23

Upstream networks

• AS44600 "GIGATRANS UKRAINE", LLC
• AS12963 "SCIENTIFIC-INDUSTRIAL FIRM "VOLZ" LIMITED LIABILITY COMPANY

Adjacent networks

• AS44600 "GIGATRANS UKRAINE", LLC
• AS12963 "SCIENTIFIC-INDUSTRIAL FIRM "VOLZ" LIMITED LIABILITY COMPANY