AS12508 — AS12508 Bratislava, Slovak Republic

Network type: residential

AS12508 announces 2 IPv4 prefixes covering 8,704 addresses and 1 IPv6 prefixes.

About this network

A Slovak provider with 31 neighbours for 8,704 addresses, and an AS name that is its own number plus a city.

What it's used for

• Internet access and hosting. 8,704 addresses in two IPv4 prefixes, one IPv6 /29, and 31 observed BGP neighbours.

Notable

• The AS handle reads AS12508 Bratislava, Slovak Republic — the number repeating itself, then a location.
• 212.89.224.0/19 is netname SK-RAINSIDE-20000519, registered to Rainside s.r.o.
• 164.40.168.0/23 belongs to a different company, DCBA s.r.o., under netname SK-DATACUBE-20111116.
• An address in that second block answers ptr126.169.data-cube.sk, spelling out the last two octets in reverse order behind the literal string ptr.
• The IPv6 allocation is a /29, the size given to a provider expected to hand out /48s.

Interesting

• Thirty-one neighbours against 8,704 addresses inverts the usual ratio. A network with this little space and this many adjacencies is not selling access to those addresses; it is peering, which in a single-city market means turning up at the local exchange and swapping routes with everyone else who did.
• The eleven years between the two netnames, 20000519 and 20111116, span the gap between a /19 issued when space was still handed out generously and a /23 issued when it was not. The second block is a sixteenth the size of the first.

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

Announced prefixes

• 164.40.168.0/23
• 212.89.224.0/19
• 2a09:6c0::/29

Upstream networks

• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS39392 SH.cz s.r.o.
• AS3303 Swisscom (Schweiz) AG
• AS37721 Virtual Technologies & Solutions
• AS31230 Slovak University of Technology in Bratislava
• AS24482 SG.GS
• AS29504 Freenet Liberec, z.s.
• AS57463 NetIX Communications JSC
• AS20562 Broadband Hosting B.V.

Adjacent networks

• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS39392 SH.cz s.r.o.
• AS3303 Swisscom (Schweiz) AG
• AS31230 Slovak University of Technology in Bratislava
• AS37721 Virtual Technologies & Solutions
• AS24482 SG.GS
• AS29504 Freenet Liberec, z.s.
• AS20562 Broadband Hosting B.V.
• AS57463 NetIX Communications JSC

Internet exchanges

• Peering.cz — Prague, Czech Republic
• Slovak Internet eXchange Bratislava — Bratislava, Slovakia