AS15497 — COLOCALL Internet Data Center ColoCALL

Network type: hosting

AS15497 announces 4 IPv4 prefixes covering 16,896 addresses and 1 IPv6 prefixes.

About this network

The only two addresses that answer are both the last address of their block.

What it's used for

• A data centre and hosting operator. Twenty IPv4 prefixes and one IPv6 /32 announced from Slovakia, sixteen thousand addresses, across thirty-six observed BGP neighbours.

Notable

• Both answering addresses end in the highest value an octet can hold, and both carry a label abbreviating broadcast, so the names published are for addresses nobody can be assigned.
• Each of those two names also carries a host role: one a numbered machine, the other an abbreviation for virtual dedicated servers.
• All twenty blocks share one netname stem with a country code that is not obviously the operator's brand, and only two distinct allocation dates between them, eleven years apart.
• The holder's name runs two separate brands together before the corporate form, and the AS handle repeats one of them at both ends.
• Eighteen addresses were queried for reverse DNS and two returned a name.

Interesting

• Naming broadcast addresses while leaving the usable ones silent is backwards from the usual practice, and it is what happens when reverse entries are written by hand for infrastructure and never generated for customers.
• Thirty-six neighbours for sixteen thousand addresses is dense interconnection, which is what a hosting business sells: many short paths to many networks.
• Two allocation dates eleven years apart, and twenty routes between them, is a business that grew in two bursts and fragmented its space in the second.

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

Announced prefixes

• 31.28.160.0/19
• 62.149.0.0/19
• 193.35.25.0/24
• 193.41.239.0/24
• 2a03:6300::/32

Upstream networks

• AS6939 Hurricane Electric LLC
• AS3223 Voxility LLP
• AS174 Cogent Communications, LLC
• AS24482 SG.GS
• AS3303 Swisscom (Schweiz) AG
• AS29632 Netassist International EOOD
• AS57463 NetIX Communications JSC

Downstream networks

• AS35409 TUCHA Sp. z o.o.
• AS12837 "1 CLOUD LAB" LLC
• AS44633 LLC "TANHOST"
• AS197222 Private Joint Stock Company RAMBURS
• AS42714 Kichkas Network Ltd.
• AS43405 LLC "Caprate Partners"
• AS210294 Private company "Ukrainian hosting"
• AS25315 TOB AVGZ
• AS49337 Blinkov Oleksiy Volodymyrovych
• AS42545 Astarta-Kiev Ltd.
• AS31360 Private Joint-Stock Company "INTER TV-CHANNEL"
• AS34870 News Agency Interfax-Ukraine Ltd

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS3223 Voxility LLP
• AS35409 TUCHA Sp. z o.o.
• AS12837 "1 CLOUD LAB" LLC
• AS44633 LLC "TANHOST"
• AS43405 LLC "Caprate Partners"
• AS42714 Kichkas Network Ltd.
• AS197222 Private Joint Stock Company RAMBURS
• AS210294 Private company "Ukrainian hosting"
• AS25315 TOB AVGZ
• AS49337 Blinkov Oleksiy Volodymyrovych
• AS42545 Astarta-Kiev Ltd.
• AS31360 Private Joint-Stock Company "INTER TV-CHANNEL"
• AS24482 SG.GS
• AS3303 Swisscom (Schweiz) AG
• AS29632 Netassist International EOOD
• AS34870 News Agency Interfax-Ukraine Ltd
• AS57463 NetIX Communications JSC

Internet exchanges

• Giganet Internet Exchange — Kyiv, Ukraine
• GNM Internet Exchange Ukraine — Kiev, Ukraine