AS12638 — AS12638 Duesseldorf

AS12638 announces 3 IPv4 prefixes covering 49,152 addresses and 0 IPv6 prefixes.

About this network

A netname dated February 1994, still carrying the name of the company that registered it.

What it's used for

• Carrier connectivity in Germany. 49,152 addresses in three IPv4 prefixes, one observed BGP neighbour, and no IPv6 announced.

Notable

• 193.7.128.0/19 is netname DE-MEDIAWAYS-19940202 — the oldest allocation date in the whole of this sweep.
• The other two are DE-MEDIAWAYS-990907 and DE-MEDIAWAYS-20120425.
• The registry contact on all three is mediaWays Hostmaster, while the holder is Telefonica Germany GmbH & Co.OHG.
• 5.1.128.0/17 holds 32,768 of the 49,152 addresses.
• Nine sampled addresses were queried and none returned a name.

Interesting

• A record from early 1994 predates the commercial Internet in Germany by most measures. The three netnames span eighteen years and three naming conventions: a full eight-digit date, the two-digit form of the late nineties, and the modern eight-digit form again after the year 2000 made the short version untenable.
• mediaWays was absorbed long ago and the name survives only here, in the contact field of blocks that changed hands with it. Address registrations are transferred by editing the holder and leaving everything else, so the contact fields accumulate the names of every company an asset has passed through.
• A carrier of this size announcing no IPv6 at all under this number, with one observed neighbour, means the number does one specific job inside a much larger organisation.

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

Announced prefixes

• 5.1.128.0/17
• 193.7.128.0/19
• 212.23.96.0/19

Upstream networks

• AS6805 Telefonica Germany GmbH & Co.OHG

Adjacent networks

• AS6805 Telefonica Germany GmbH & Co.OHG