AS13156 — AS13156 Palmela

AS13156 announces 5 IPv4 prefixes covering 214,016 addresses and 1 IPv6 prefixes.

About this network

Three different brand names, one per layer: the holder, the netname and the reverse DNS all disagree.

What it's used for

• A cable broadband and television operator in Portugal. 214,016 addresses across 76 IPv4 prefixes, one IPv6 prefix, and two observed BGP neighbours.

Notable

• The holder is NOWO COMMUNICATIONS, S.A.; every netname reads PT-CABOVISAO-20010116 or PT-CABOVISAO-20040512; the reverse names all end in netvisao.pt.
• The AS handle is AS13156 Palmela, an AS number and a town with no company in it.
• Reverse names carry two-letter site codes with a digit: ff2-, ff3-, cb2-, sm1-, co-.
• Ten of eighteen sampled addresses returned names, including 84.90.95.255 and 84.91.31.255.

Interesting

• A rebrand touches the website first, the registry later and the reverse zone almost never. All three names here are real and current in their own layer, so anyone identifying this network gets a different answer depending on which they consult.
• The site codes are the useful part. sm and cb and ff repeat with different digits across separate /18s, which maps address ranges to physical head-ends rather than to customers.
• Addresses ending .255 and .254 answer with names of their own. In a network carved into small routed subnets those are ordinary usable addresses, and the naming script has no reason to know which ones a reader might expect to be special.
• 214,000 addresses behind two neighbours is a subscriber network: enormous downstream, minimal upstream.

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

Announced prefixes

• 84.90.0.0/15
• 91.194.170.0/23
• 91.194.182.0/23
• 213.228.128.0/18
• 217.129.0.0/16
• 2a02:26c8::/32

Upstream networks

• AS20879 DIGI ROMANIA S.A.
• AS42863 SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.

Adjacent networks

• AS20879 DIGI ROMANIA S.A.
• AS42863 SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.