asn.dev

Autonomous system

AS43253 CBT-AS

Unclassified RIPE

IPv4 addresses 1.28K 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly PL
Exchanges 2 recorded by PCH
Upstreams 3 0 downstream
Flagged prefixes 0 none

Summary

Cebit

Poland · AI-generated

isp residential poland access

The AS handle CBT-AS is held by Cebit MAriusz Marton sp.J.

What it's used for

  • The address space carries residential and business internet access, evidenced by reverse DNS entries such as ip-185-119-149-0.cebit.com.pl and 64.cebit-isp.pl.
  • The network announces 1280 IPv4 addresses across 2 prefixes and maintains 7 observed neighbours, a ratio indicative of a regional access provider rather than a transit carrier.
  • Traffic from this AS consists of subscriber eyeballs and local business endpoints within the areas serviced by Cebit in Poland.

Notable

  • Registrants for the announced prefixes include "CEBIT MARIUSZ MARTON" SPOLKA JAWNA for 185.119.148.0/22 and ATMAN for 217.17.38.0/24, with the latter potentially indicating leased space or historical allocation.
  • The inventory consists of two distinct IPv4 blocks: 185.119.148.0/22 and 217.17.38.0/24, with no IPv6 prefixes currently announced.

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

Recorded at 2 exchanges in 1 country, largest first.

ExchangeLocationTheir address
TPIX - Internet ExchangeWarsaw, Poland195.149.232.229
Thinx IXWarsaw, Poland212.91.0.66

Transit providers

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

ASNetworkPaths seen
AS29535Orange Polska Spolka Akcyjna102
AS24724Atman Sp. z o.o.26
AS24482SG.GS2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-28, 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 2 prefixes · 1.28K addresses IPv6 0 prefixes

CountryNamePrefixes
PLPoland2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS43253
Registry name
CBT-AS
Registrant
ATMAN-MNT
Abuse contact
admin@cebit.com.pl
Registered
2007-07-03
Last changed
2020-11-16
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
Cebit MAriusz Marton
Scope
Not Disclosed
Traffic ratio
Not Disclosed
Peering policy
Open
Present at
2 exchanges
Website
http://www.cebit.com.pl

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Routing security

RPKI and IRR

Full detail
RPKI
50% valid · 1 valid, 1 with no ROA
ROAs
1 authorising AS43253
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
4 naming AS43253

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: 448 networks and 1,849 prefixes, as published 2026-10-29. 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