AS12657 — BAYCIX Benzstr. 13

AS12657 announces 3 IPv4 prefixes covering 24,576 addresses and 2 IPv6 prefixes.

About this network

Three /19s whose netnames use the two-digit and four-digit year forms six months apart.

What it's used for

• Internet access in Bavaria. 24,576 addresses in three IPv4 prefixes, three IPv6 prefixes, and three observed BGP neighbours.

Notable

• The netnames are DE-OK-990112, DE-OK-19990719 and DE-OK-20000510.
• The first two are both from 1999, six months apart, and spell the year differently.
• All three blocks are /19s: 212.72.64.0/19, 212.102.160.0/19 and 213.131.192.0/19.
• The IPv6 announcements are 2001:1578::/48, 2001:1579::/47 and 2001:1579:2::/48.
• Nine sampled addresses were queried and none returned a name.

Interesting

• Netname dates come in a short form and a long form, and the usual assumption is that the long form replaced the short one when the year 2000 made two digits ambiguous. These two records disprove that inside a single organisation's own filings: January 1999 written as 990112 and July 1999 written as 19990719. Both conventions were available at once, and which one a block got depended on whoever filled in the form that day.
• OK is not BayCIX. A netname family named for a company that no longer appears anywhere else in the record is the ordinary way address blocks carry their history, and the two 1999 dates say the predecessor was already collecting /19s before the year was out.
• Three /19s and only three observed neighbours. The address holding is regional-carrier sized; the peering is not.

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

Announced prefixes

• 212.72.64.0/19
• 212.102.160.0/19
• 213.131.192.0/19
• 2001:1578::/48
• 2001:1579::/46

Upstream networks

• AS8767 M-net Telekommunikations GmbH
• AS3209 Vodafone GmbH

Downstream networks

• AS35003 Florian Kirstein

Adjacent networks

• AS8767 M-net Telekommunikations GmbH
• AS35003 Florian Kirstein
• AS3209 Vodafone GmbH