AS15498 — RTCNOW RTCnow Streaming Services GmbH

AS15498 announces 4 IPv4 prefixes covering 3,072 addresses and 1 IPv6 prefixes.

About this network

A lights-out management interface is named in public DNS, and the name has the wrong octet.

What it's used for

• A streaming and content delivery operator. Four IPv4 prefixes and one IPv6 /47 announced from Austria, three thousand addresses, across twenty-eight observed BGP neighbours.

Notable

• One answering address returns a name containing a three-letter label for out-of-band server management, under a content delivery domain.
• That same name states the address as ending in one third octet while the address it belongs to has a different one, so the label is off by one from reality.
• Three other addresses answer under a short unrelated domain with the last octet padded to three digits.
• The four netnames disagree with each other completely: one has the country code and a date, one names a different carrier, one is a site code with a virtual network number, and one names another company entirely.
• Twelve addresses were queried for reverse DNS and four returned a name.

Interesting

• Publishing a management interface in reverse DNS hands an attacker the exact address of the thing that controls the server, below the operating system. It is the one interface that should not be findable by name.
• Two of the four blocks list no company at all in their registrant field, only an abuse role, so half this network has no named owner in the registry.
• A netname carrying a virtual network number means somebody pasted an internal switching label into a public database.

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

Announced prefixes

• 62.13.192.0/21
• 62.13.221.0/24
• 62.13.223.0/24
• 185.138.124.0/23
• 2a00:d88::/47

Upstream networks

• AS5405 Inter.link GmbH
• AS174 Cogent Communications, LLC
• AS31543 myNet GmbH
• AS8218 Zayo Infrastructure France SA
• AS15935 ha-vel internet s.r.o.
• AS57463 NetIX Communications JSC

Adjacent networks

• AS5405 Inter.link GmbH
• AS174 Cogent Communications, LLC
• AS31543 myNet GmbH
• AS8218 Zayo Infrastructure France SA
• AS15935 ha-vel internet s.r.o.
• AS57463 NetIX Communications JSC

Internet exchanges

• Vienna Internet Exchange — Vienna, Austria