asn.dev

Autonomous system

AS41046 NEJTV-AS

Unclassified RIPE

IPv4 addresses 32.77K 4 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

O2 Czech Republic

Czechia · AI-generated

residential isp cable dsl

NEJTV-AS is operated by O2 Czech Republic, a.s.

What it's used for

  • The address space carries residential and business access traffic, evidenced by reverse DNS entries like host-178-72-239-254.ip.nej.cz and registrant netnames such as CZ-CZNET-20100318.
  • The AS announces 32,768 IPv4 addresses across 4 prefixes and 2 IPv6 prefixes, while maintaining only 1 observed neighbour, a ratio characteristic of an access network rather than a transit provider.
  • Traffic from this AS consists of subscriber eyeballs, including cable and DSL users, as O2 Czech Republic is a major telecommunications provider in the country.

Notable

  • All registrants for the announced prefixes are listed as O2 Czech Republic, a.s., which agrees with the AS holder.
  • The address inventory is composed of four distinct IPv4 blocks, including 178.72.192.0/18 and 82.114.192.0/19, all registered to the same 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
AS16246O2 Czech Republic, a.s.546

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, 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 4 prefixes · 32.77K addresses IPv6 2 prefixes

CountryNamePrefixes
CZCzechia6

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS41046
Registry name
NEJTV-AS
Registrant
AS5610-MTN
Abuse contact
abuse@o2.cz
Registered
2006-06-06
Last changed
2024-06-20
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 10 valid, 0 with no ROA
ROAs
10 authorising AS41046
ASPA
no ASPA record
IRR
100% registered · 10 of 10 announcements
Route objects
10 naming AS41046

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: 447 networks and 1,845 prefixes, as published 2026-10-31. 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