asn.dev

Autonomous system

AS211248 CZ_ARTEMIS4

Unclassified ARIN

IPv4 addresses 1.79K 3 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Artemis NET s.r.o.

Czechia · AI-generated

residential isp czechia fiber

CZ_ARTEMIS4 is operated by Artemis NET s.r.o.

What it's used for

  • The address space carries residential and business internet services, evidenced by reverse DNS entries such as rumburk.artemis-net.cz and a128.airnetdt.cz, alongside netnames CZ-ARTEMIS4-20140120 and AIRNETDT.
  • The AS announces 1792 IPv4 addresses across 3 prefixes and 1 IPv6 prefix, with only 1 observed neighbour, indicating a local access network rather than a transit provider.
  • Traffic from this AS consists of subscriber eyeballs for internet, TV, and VoIP services provided to customers in the Liberec region of Czechia.

Notable

  • Registrants for the majority of the space are Artemis NET s.r.o., while the 91.221.2.0/23 block is registered to Air NET DT s.r.o. under the netname AIRNETDT.
  • The address inventory is composed of three distinct IPv4 blocks, including a /22, a /23, and a /24, with the /23 block associated with a separate registrant entity.

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 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS15614Dragon Internet a.s.214

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, 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 3 prefixes · 1.79K addresses IPv6 1 prefixes

CountryNamePrefixes
CZCzechia4

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS211248
Registry name
cz_artemis4
Registrant
lir-cz-artemis4-1-MNT
Abuse contact
info@artemis-net.cz
Registered
2025-03-25
Last changed
2025-03-25
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 4 valid, 0 with no ROA
ROAs
5 authorising AS211248
ASPA
1 declared providers
IRR
100% registered · 4 of 4 announcements
Route objects
4 naming AS211248

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: 445 networks and 1,817 prefixes, as published 2026-10-27. 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