AS56566 — SATT-AS SATT a.s.

AS56566 announces 9 IPv4 prefixes covering 12,032 addresses and 1 IPv6 prefixes.

About this network

The AS handle SATT-AS is held by SATT a.s., a regional telecommunications provider operating in the Czech Republic.

What it's used for

• The address space carries residential broadband traffic, evidenced by reverse DNS entries such as uidzr46254.sattnet.cz and uidnm53126.sattnet.cz which indicate user-defined or dynamic hostnames on the sattnet.cz domain.
• The network announces 12,032 IPv4 addresses across 9 prefixes and 1 IPv6 prefix, with only 2 observed routing neighbours, a ratio characteristic of an access or eyeball network rather than a transit provider.
• Traffic from this AS consists of subscriber internet access for residential customers in the Czech region, specifically around Žďár nad Sázavou and surrounding areas.

Notable

• Registrants for the largest prefixes are consistent with the announcer, listing SATT a.s. and Abuse-C Role for netnames including CZ-SATT-20110321 and SATTNET.
• The address inventory is composed of multiple smaller blocks, including a /19 and several /23 and /24 prefixes, all located in Czechia.

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

Announced prefixes

• 31.31.224.0/19
• 89.190.52.0/23
• 89.190.55.0/24
• 91.224.64.0/23
• 91.224.100.0/23
• 212.4.142.0/23
• 212.96.185.0/24
• 213.211.37.0/24
• 213.211.44.0/22
• 2a00:de00::/32

Upstream networks

• AS28725 CETIN a.s.
• AS47232 ISP Alliance a.s.

Adjacent networks

• AS28725 CETIN a.s.
• AS47232 ISP Alliance a.s.

Routing security

• RPKI: 10 valid, 0 invalid and 0 not-found announcements; 10 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 10 route objects.
• Listed in as-sets: AS-CETIN, AS-CZECHBONE, AS-GRAPESC-CZ, AS-HURRICANEV6, AS-ISPALLIANCE-CZ, AS12570:AS-CUSTOMERS.