AS15516 — DK-DANSKKABELTV

Network type: residential

AS15516 announces 10 IPv4 prefixes covering 340,992 addresses and 3 IPv6 prefixes.

About this network

Most addresses answer with the words "generic hostname" written into the name.

What it's used for

• A cable television and broadband operator. Ten IPv4 prefixes and three IPv6 prefixes announced from Denmark, three hundred and forty thousand addresses, across fifty observed BGP neighbours.

Notable

• Nine of the twelve answering addresses return the full address in ordinary forward order, followed by a label spelling out that the name is generic, under a domain belonging to another brand.
• Two more answer under a second unrelated brand's domain, with a short code, a site code and a word for customer.
• One answers under a third domain, this one closest to the operator's own name.
• Blocks range from two /15 prefixes down to a /22, with allocation dates spread across eight years.
• Eighteen addresses were queried for reverse DNS and twelve returned a name.

Interesting

• Three brands in one reverse zone is an acquisition history readable from DNS. Each acquired network kept its own naming domain, and nothing was ever consolidated.
• Writing the address in forward order into the name is unusual. Almost everyone reverses the octets, which makes the two /15 blocks here read backwards compared to most of the internet.
• Announcing the address in the name at all, and labelling it generic, tells anyone looking that these are unassigned residential addresses rather than named hosts.

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

Announced prefixes

• 62.61.128.0/19
• 77.75.160.0/21
• 79.98.192.0/21
• 81.161.128.0/18
• 82.147.224.0/19
• 82.211.224.0/19
• 85.24.0.0/17
• 87.72.0.0/15
• 91.100.0.0/15
• 195.135.216.0/22
• 2001:14d0::/29
• 2a01:558::/32
• 2a07:8900::/29

Upstream networks

• AS3292 TDC Holding A/S
• AS20562 Broadband Hosting B.V.
• AS6939 Hurricane Electric LLC
• AS204092 Association GRIFON
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS24482 SG.GS
• AS48185 team.blue NV
• AS50673 Serverius Holding B.V.
• AS6696 VERIXI SA
• AS20485 Joint Stock Company TransTeleCom
• AS37100 SEACOM Limited
• AS37721 Virtual Technologies & Solutions
• AS29632 Netassist International EOOD

Adjacent networks

• AS3292 TDC Holding A/S
• AS20562 Broadband Hosting B.V.
• AS6939 Hurricane Electric LLC
• AS50673 Serverius Holding B.V.
• AS48185 team.blue NV
• AS204092 Association GRIFON
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS24482 SG.GS
• AS6696 VERIXI SA
• AS37721 Virtual Technologies & Solutions
• AS37100 SEACOM Limited
• AS20485 Joint Stock Company TransTeleCom
• AS29632 Netassist International EOOD

Internet exchanges

• Neutral Internet Exchange — Amsterdam, Netherlands
• Danish Internet Exchange — Copenhagen, Denmark