AS13199 — DOUBRAVA-NET

Network type: residential

AS13199 announces 1 IPv4 prefixes covering 1,024 addresses and 1 IPv6 prefixes.

About this network

An AS number from the earliest era of allocation, first seen routing in 2015.

What it's used for

• A small internet provider in Czechia. 1,024 addresses in one IPv4 prefix, one IPv6 prefix, and 23 observed BGP neighbours.

Notable

• The single IPv4 prefix is 185.93.60.0/22, netname CZ-DOUBRAVA-NET-20150324.
• The IPv6 allocation is a /29.
• First observed in the routing archive in September 2015.
• One of three sampled addresses returned a name: 185-93-62-254.cust.doubrava.net.

Interesting

• The netname date and the first routing observation fall six months apart in the same year, which is the normal gap between getting address space and putting it into service. What is unusual is that both sit fifteen years after this AS number's neighbours in the sequence were issued. Numbers are reissued, so the number says nothing about the network's age.
• A /29 of IPv6 alongside a single IPv4 /22 is the standard allocation a regional registry hands any provider that asks. The two protocols are rationed on completely different scales, and this is what that looks like on one small network.
• 23 neighbours on 1,024 addresses is a provider that peers rather than one that buys, which is how small operators get competitive paths without competitive volumes.

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

Announced prefixes

• 185.93.60.0/22
• 2a06:9780::/29

Upstream networks

• AS39392 SH.cz s.r.o.
• AS47232 ISP Alliance a.s.
• AS6939 Hurricane Electric LLC
• AS24482 SG.GS
• AS29504 Freenet Liberec, z.s.
• AS20562 Broadband Hosting B.V.
• AS57463 NetIX Communications JSC
• AS37721 Virtual Technologies & Solutions
• AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH

Adjacent networks

• AS39392 SH.cz s.r.o.
• AS47232 ISP Alliance a.s.
• AS6939 Hurricane Electric LLC
• AS29504 Freenet Liberec, z.s.
• AS24482 SG.GS
• AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
• AS57463 NetIX Communications JSC
• AS37721 Virtual Technologies & Solutions
• AS20562 Broadband Hosting B.V.

Internet exchanges

• Peering.cz — Prague, Czech Republic