AS209531 — OSTV OSTV s.r.o.

Network type: residential

AS209531 announces 2 IPv4 prefixes covering 1,280 addresses and 2 IPv6 prefixes.

About this network

OSTV SIX is operated by OSTV s.r.o.

What it's used for

• The address space carries residential and business internet access, as indicated by the PeeringDB classification of Cable/DSL/ISP and the registrant netnames SK-OSTVSRO-20190122 and SK-OSTVSRO-20250623.
• The AS announces 1280 IPv4 addresses across 2 prefixes and 2 IPv6 prefixes, while maintaining 33 observed neighbours; this ratio of limited address space against a high number of peering partners indicates a regional access provider rather than a transit carrier.
• Traffic from this AS consists of subscriber eyeballs for cable and DSL customers in the Nitra region of Slovakia, consistent with the operator's status as a regional ISP.

Notable

• Registrants for both announced IPv4 prefixes are listed as OSTV s.r.o., matching the AS holder and confirming direct ownership of the address space.
• The address inventory is compact, consisting of a single /22 block and a single /24 block, which is typical for a regional cable operator serving a specific geographic area.

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

Announced prefixes

• 147.78.168.0/22
• 194.110.119.0/24
• 2a09:27c0::/29
• 2a14:5980::/29

Upstream networks

• AS39392 SH.cz s.r.o.
• AS6939 Hurricane Electric LLC
• AS31230 Slovak University of Technology in Bratislava
• AS3303 Swisscom (Schweiz) AG
• AS29504 Freenet Liberec, z.s.
• AS37721 Virtual Technologies & Solutions
• AS24482 SG.GS
• AS20562 Broadband Hosting B.V.
• AS33891 Core-Backbone GmbH

Downstream networks

• AS208882 CoolNet, s.r.o.

Adjacent networks

• AS39392 SH.cz s.r.o.
• AS6939 Hurricane Electric LLC
• AS31230 Slovak University of Technology in Bratislava
• AS3303 Swisscom (Schweiz) AG
• AS208882 CoolNet, s.r.o.
• AS37721 Virtual Technologies & Solutions
• AS24482 SG.GS
• AS29504 Freenet Liberec, z.s.
• AS20562 Broadband Hosting B.V.
• AS33891 Core-Backbone GmbH

Routing security

• RPKI: 8 valid, 0 invalid and 0 not-found announcements; 8 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 8 route objects.
• Listed in as-sets: AS-COOLNETSK, AS-O2BSSK, AS12570:AS-CUSTOMERS, AS209531:AS-OSTV.

Internet exchanges

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