AS15425 — COMA

AS15425 announces 8 IPv4 prefixes covering 110,592 addresses and 1 IPv6 prefixes.

About this network

Four different brands across one network, and a town's own domain among the customer names.

What it's used for

• A regional internet provider. Eight IPv4 prefixes and one IPv6 /32 announced from Czechia, one hundred and ten thousand addresses, through one observed BGP neighbour.

Notable

• The AS handle is one company name and the holder is another, neither of which is the domain the reverse names use.
• Eleven of the twelve answering addresses take the form of two letters, then the full address padded with zeroes to twelve digits, under that third domain. Some add a word for static in front and some do not.
• The twelfth answers with a municipality's own domain, so a town's network sits inside the provider's address space.
• All eight netnames follow one pattern of country code, holder and allocation date, spanning many years.
• Eighteen addresses were queried for reverse DNS and twelve returned a name.

Interesting

• Zero padding every octet to three digits makes the names sort correctly as text, which is a small kindness to anyone reading logs and an old habit among providers who did.
• One hundred and ten thousand addresses behind a single observed neighbour is the number to question. Either the collectors see only one path, or a large regional network depends on one.
• The town domain is the useful find. It marks which addresses serve a public authority rather than households, and nothing else in the record would tell you.

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

Announced prefixes

• 5.53.8.0/21
• 31.28.128.0/19
• 84.16.96.0/19
• 84.21.96.0/19
• 86.61.128.0/17
• 93.181.64.0/18
• 176.227.248.0/21
• 188.134.128.0/17
• 2a03:6e80::/32

Upstream networks

• AS30764 PODA a.s.

Adjacent networks

• AS30764 PODA a.s.