asn.dev

Autonomous system

AS48405 CGI-CZ-AS1

Unclassified APNIC

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

CGI IT Czech Republic

Czechia · AI-generated

business it consulting corporate

CGI-CZ-AS1 is held by CGI IT Czech Republic s.r.o.

What it's used for

  • The space carries corporate IT infrastructure, evidenced by the netname CGI-CZ-Net and registrant CGI CZ Network Subscribptions; CGI IT Czech Republic s.r.o.
  • The AS announces 256 IPv4 addresses across 1 prefix with 2 observed neighbours, indicating a small, self-contained corporate network rather than a transit or access provider
  • Traffic from this AS consists of internal business operations for CGI, a global IT and business consulting firm, including office workers and internal service endpoints

Notable

  • The registrant CGI CZ Network Subscribptions; CGI IT Czech Republic s.r.o. aligns with the AS holder, confirming direct ownership of the address space
  • The address inventory consists of a single /24 block (91.209.101.0/24), representing a compact, unified corporate estate without subdivision into multiple customer-facing segments

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 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS25248RADIOKOMUNIKACE a.s.54
AS6855Slovak Telekom, a.s.5

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-22, 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

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS48405
Registry name
CGI-CZ-AS1
Registrant
CGI-CZ-MNT
Abuse contact
network.subscribtions.cz@cgi.com
Registered
2008-11-21
Last changed
2019-11-19
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS48405
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
3 naming AS48405

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 1,779 prefixes, as published 2026-10-23. 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