AS13226 — CYBERNET

Network type: residential

AS13226 announces 5 IPv4 prefixes covering 7,936 addresses and 1 IPv6 prefixes.

About this network

Dynamic and fixed addresses live in separate reverse-DNS zones, and one site gets a zone of its own.

What it's used for

• An internet provider in Belgium. 7,936 addresses across five IPv4 prefixes, one IPv6 prefix, and 16 observed BGP neighbours.

Notable

• Reverse names split between dyn.cybernet.be and plain cybernet.be, with one address answering 213-177-93-126.franco.cybernet.be.
• Netnames are CYBERNET-ISP, CYBERNET-ROOT and BE-CYBERNET-20000322.
• One block's registry lookup failed, so nothing here rests on it.
• Twelve of fifteen sampled addresses returned a name.

Interesting

• Separating dynamic addresses into their own subdomain is the single most useful thing a provider can do with reverse DNS. Mail systems and abuse handlers treat the two categories differently, and the label tells them which is which without anyone having to publish a list.
• The extra franco label between address and domain marks one site or customer inside an otherwise uniform scheme, so the zone carries structure that the netnames do not.
• ROOT and ISP as netnames describe the operator's own view of its space: the core and the part sold on. Neither follows the dated country-prefixed convention its third block uses, which puts three eras of naming in one record.

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

Announced prefixes

• 213.177.64.0/20
• 213.177.80.0/21
• 213.177.88.0/22
• 213.177.92.0/23
• 213.177.94.0/24
• 2a01:5b80::/32

Upstream networks

• AS174 Cogent Communications, LLC
• AS6696 VERIXI SA
• AS6939 Hurricane Electric LLC
• AS3303 Swisscom (Schweiz) AG
• AS24482 SG.GS
• AS34019 Hivane Association
• AS45049 Mohamed El Bouddunti
• AS48185 team.blue NV

Adjacent networks

• AS174 Cogent Communications, LLC
• AS6696 VERIXI SA
• AS6939 Hurricane Electric LLC
• AS3303 Swisscom (Schweiz) AG
• AS24482 SG.GS
• AS34019 Hivane Association
• AS45049 Mohamed El Bouddunti
• AS48185 team.blue NV

Internet exchanges

• Luxembourg Internet Exchange — Luxembourg, Luxembourg
• Belgian National Internet Exchange — Brussels, Belgium