AS15552 — CK

AS15552 announces 10 IPv4 prefixes covering 33,280 addresses and 1 IPv6 prefixes.

About this network

Thirty-three thousand addresses, every sampled one named, and a single observed upstream.

What it's used for

• A broadband provider. Ten IPv4 prefixes and one IPv6 /29 announced from the Russian Federation, thirty-three thousand addresses, through one observed BGP neighbour.

Notable

• All eighteen sampled addresses answered, every one with the same form: the address in ordinary forward order, then a three-letter label for broadband access, then a domain under a different brand entirely.
• Nine of the ten blocks carry the country code, the company name and an allocation date; the tenth drops the date and the company, leaving only an operations role.
• Three of those dates fall within four weeks of each other, and two more are three days apart, so the network took several allocations in short bursts rather than steadily.
• The company name sits in quotation marks after its corporate abbreviation.
• Eighteen addresses were queried for reverse DNS and all eighteen returned a name.

Interesting

• Complete reverse coverage on a network this size means the zone is generated, not maintained, and the forward octet order confirms it: a script wrote the address straight into the label.
• Two brands, one in the registry and one in DNS, is the ordinary shape of a provider that trades under a name different from the one it registered.
• One observed upstream for thirty-three thousand subscribers is the exposure worth naming. Everything here depends on a single relationship holding.

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

Announced prefixes

• 5.56.136.0/21
• 5.57.216.0/21
• 5.101.224.0/19
• 37.114.0.0/21
• 85.232.96.0/19
• 91.204.22.0/23
• 145.255.32.0/20
• 185.6.116.0/22
• 185.6.216.0/22
• 212.232.0.0/20
• 2a04:d2c0::/29

Upstream networks

• AS13178 LLC "Real-net"

Adjacent networks

• AS13178 LLC "Real-net"