AS15711 — IBERDROLA Bilbao

AS15711 announces 1 IPv4 prefixes covering 4,096 addresses and 0 IPv6 prefixes.

About this network

The AS handle is the company name and a city, and the city is the only extra information in it.

What it's used for

• An energy utility's corporate network. One IPv4 /20 announced from Spain, no IPv6, four thousand and ninety-six addresses, across two observed BGP neighbours.

Notable

• The handle appends a city to the brand, so the routing identifier records where the company is based rather than anything about the network.
• The single block's netname is a country code, the brand and an allocation date from the same period the number was first seen.
• The second registrant is the company's initials followed by the registry's name, a contact object named after the system it lives in.
• Four thousand addresses are announced as one route with no smaller pieces.
• Three addresses were queried for reverse DNS and none returned a name.
• There is no IPv6 announcement at all.

Interesting

• A city in a handle is the same instinct as a street address in one, which turns up repeatedly in this stretch of numbers. The field was treated as a place to describe the organisation rather than to name the network.
• A utility with one block, one route and no reverse names has a network that exists to connect offices, not to serve anyone from outside. The public surface is as small as a company this size can make it.
• Two upstreams and no IPv6 is a corporate network that has been stable long enough that nothing has forced it to change.

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

Announced prefixes

• 217.22.96.0/20

Upstream networks

• AS3262 SAREnet, S.A.
• AS12338 Euskaltel S.A.

Adjacent networks

• AS3262 SAREnet, S.A.
• AS12338 Euskaltel S.A.