AS51449 — KTUO-AS Kabelova televize Usti nad Orlici, spol. s r. o.

AS51449 announces 3 IPv4 prefixes covering 1,024 addresses and 1 IPv6 prefixes.

About this network

The AS handle KTUO-AS is held by Kabelová televize Ústí nad Orlicí, spol. s r. o.

What it's used for

• The address space carries local cable television, internet, and VoIP services, evidenced by reverse DNS entries such as 128-146.ktuo.cz and 64-136.ktuo.cz.
• The network announces 1024 IPv4 addresses across 3 prefixes and 1 IPv6 prefix, with only 2 observed neighbours, indicating a small local access network rather than a transit provider.
• Traffic from this AS consists of subscriber eyeballs and VoIP media/signalling for residents and businesses in the Ústí nad Orlicí region.

Notable

• The RDAP registrants for all announced IPv4 prefixes list CEZNET s.r.o. as the hostmaster, while the AS holder is Kabelová televize Ústí nad Orlicí, suggesting the address space was originally allocated to or managed by CEZNET before being operated by the local cable provider.
• The inventory is compact, consisting of three contiguous IPv4 blocks in the 82.144.136.0/22 range and a single /32 IPv6 prefix.

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

Announced prefixes

• 82.144.136.0/24
• 82.144.143.0/24
• 82.144.146.0/23
• 2a02:d07::/32

Upstream networks

• AS49101 CEZNET s.r.o.
• AS25512 CD-Telematika a.s.

Adjacent networks

• AS49101 CEZNET s.r.o.
• AS25512 CD-Telematika a.s.

Routing security

• RPKI: 5 valid, 0 invalid and 0 not-found announcements; 5 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 5 route objects.
• Listed in as-sets: AS-CDT-NETWORKS, AS-DIALTELECOM, AS-KTCZ-NET.