asn.dev

Autonomous system

AS214224 CESKASITNET CeskaSit.net Networks s.r.o.

Unclassified RIPE

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

CeskaSit.net Networks

Czechia · AI-generated

isp residential czechia small

The AS handle CESKASITNET is held by CeskaSit.net Networks s.r.o.

What it's used for

  • The address space carries residential or small-business internet access, evidenced by reverse DNS entries like 121-127-38-64.ceskasit.net and the netname CZ-CESKASITNET-20071009.
  • The network announces 256 IPv4 addresses across 1 prefix (121.127.38.0/24) and has 1 observed neighbour, indicating a small-scale access provider rather than a transit or hosting entity.
  • Traffic from this AS consists of end-user internet access for subscribers in the Czechia region, specifically around the Mnichovice area where the company is registered.

Notable

  • The registrant ceskasitnet; CeskaSit.net Networks s.r.o. matches the AS holder, confirming consistent ownership of the announced space.
  • The inventory consists of a single /24 block, representing a compact and focused address allocation for a local ISP.

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

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS8251FreeTel, s.r.o.61

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-13, 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 1 prefixes · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
CZCzechia1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS214224
Registry name
CESKASITNET
Registrant
lir-cz-ceskasitnet-1-MNT
Abuse contact
lir@ceskasit.net
Registered
2024-09-11
Last changed
2024-09-11
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS214224
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS214224

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: 455 networks and 1,849 prefixes, as published 2026-11-13. 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