asn.dev

Autonomous system

AS56566 SATT-AS

Unclassified AFRINIC

IPv4 addresses 12.03K 9 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

SATT a.s.

Czechia · AI-generated

isp residential czech broadband

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. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS28725CETIN a.s.353
AS47232ISP Alliance a.s.214

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 9 prefixes · 12.03K addresses IPv6 1 prefixes

CountryNamePrefixes
CZCzechia10

Registry

Allocation record

AFRINIC · via Atlas (registry + RDAP)
Registry
AFRINIC
Handle
AS56566
Registry name
SATT-AS
Registrant
SATT a.s.
Abuse contact
abuse@satt.cz
Registered
2011-03-21
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 10 valid, 0 with no ROA
ROAs
10 authorising AS56566
ASPA
no ASPA record
IRR
100% registered · 10 of 10 announcements
Route objects
10 naming AS56566

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,784 prefixes, as published 2026-10-19. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check