AS15436 — WITBE-AS

AS15436 announces 7 IPv4 prefixes covering 4,352 addresses and 1 IPv6 prefixes.

About this network

The reverse names list the operators this company measures, one customer per probe.

What it's used for

• A service quality measurement company. Eight IPv4 prefixes and fourteen IPv6 prefixes announced from France, four thousand IPv4 addresses, across fifty-three observed BGP neighbours.

Notable

• Three answering addresses sit under a subdomain for cloud and are named after telecommunications operators, including one whose name is an island group's carrier.
• A fourth is a gateway in the operations centre zone, suffixed with a three letter code for a city on the other side of the world.
• Ten of the IPv6 announcements form a staircase, each covering twice the space of the one before, and together they tile one contiguous range exactly.
• Netnames vary block by block: some carry the country code and allocation date, one adds a city abbreviation, one names a different carrier as the holder.
• Eighteen addresses were queried for reverse DNS and four returned a name.

Interesting

• Measuring what customers actually experience means placing probes inside other operators' networks, and the reverse names name those operators. The client list is readable from the DNS.
• Fifty-three neighbours for four thousand addresses fits that work: reaching many networks matters far more than holding many addresses.
• The staircase of IPv6 announcements is space brought into service piece by piece and never reaggregated, which costs every router on the internet ten entries instead of one.

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

Announced prefixes

• 81.88.96.0/21
• 193.109.121.0/24
• 193.109.125.0/24
• 193.201.0.0/22
• 193.201.7.0/24
• 193.251.229.0/24
• 212.73.219.0/24
• 2a02:c18::/32

Upstream networks

• AS6461 Zayo Bandwidth
• AS6939 Hurricane Electric LLC
• AS5511 Orange S.A.
• AS8218 Zayo Infrastructure France SA
• AS44356 Epsilon Telecommunications Ltd
• AS50628 Leonix Telecom SAS
• AS24482 SG.GS
• AS34927 iFog GmbH
• AS20766 Association "Gitoyen"
• AS37721 Virtual Technologies & Solutions
• AS33891 Core-Backbone GmbH
• AS5405 Inter.link GmbH
• AS12779 IT.Gate S.p.A.
• AS25091 IP-Max SA
• AS20562 Broadband Hosting B.V.
• AS51706 France IX Services SASU
• AS15830 Equinix (EMEA) Acquisition Enterprises B.V.

Adjacent networks

• AS6461 Zayo Bandwidth
• AS6939 Hurricane Electric LLC
• AS5511 Orange S.A.
• AS8218 Zayo Infrastructure France SA
• AS44356 Epsilon Telecommunications Ltd
• AS50628 Leonix Telecom SAS
• AS24482 SG.GS
• AS34927 iFog GmbH
• AS37721 Virtual Technologies & Solutions
• AS20766 Association "Gitoyen"
• AS5405 Inter.link GmbH
• AS33891 Core-Backbone GmbH
• AS12779 IT.Gate S.p.A.
• AS25091 IP-Max SA
• AS20562 Broadband Hosting B.V.
• AS15830 Equinix (EMEA) Acquisition Enterprises B.V.
• AS51706 France IX Services SASU

Internet exchanges

• France-IX Paris — Paris, France
• CANIX Internet Exchange - Montreal — Montreal, Canada
• Korea Internet Neutral Exchange KINX — Seoul, South Korea