asn.dev

Autonomous system

AS39842 CFE

Unclassified RIPE

IPv4 addresses 1.02K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly BE
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

CFE

Belgium · AI-generated

business construction corporate

CFE is the autonomous system for Compagnie d'Entreprises CFE S.A.

What it's used for

  • The space carries corporate infrastructure for a Belgian construction and real estate development group, as indicated by the netname BE-CFE-20171206 and registrant COMPAGNIE D'ENTREPRISES CFE S.A.
  • The AS announces 1024 IPv4 addresses in a single prefix (185.35.224.0/22) with 1 observed neighbour, a ratio consistent with an internal corporate estate rather than a transit or access network
  • Traffic from this AS consists of office workers, engineering staff, and web/API endpoints for the company's operations in Belgium, Luxembourg, and Poland

Notable

  • The registrant COMPAGNIE D'ENTREPRISES CFE S.A. matches the AS holder, confirming direct ownership of the address space
  • CFE was incorporated in 1880 and operates as a subsidiary of Ackermans & van Haaren SA, a Belgian investment holding company
  • The address inventory is a single /22 block, representing a finely subdivided internal corporate estate with no external customer base

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
AS48638Cronos NV58

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 · 1.02K addresses IPv6 0 prefixes

CountryNamePrefixes
BEBelgium1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS39842
Registry name
CFE
Registrant
be-cfe-1-mnt
Abuse contact
Tom_Slachmuylder@cfe.be
Registered
2017-12-06
Last changed
2025-05-27
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS39842
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS39842

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 1,772 prefixes, as published 2026-10-15. 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