asn.dev

Autonomous system

AS48613 CIRSONET

Unclassified RIPE

IPv4 addresses 512 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly FR
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

CIRSO

France · AI-generated

government business vpn france

The AS handle CIRSONET is held by Ctre Informatique Recouvrement Sud Ouest.

What it's used for

  • The address space carries government and business infrastructure, evidenced by the netnames URSSAF_Paris and cirsonet, and the reverse DNS entry vpn.ucanss.fr.
  • The AS announces 512 IPv4 addresses across 2 prefixes with 2 observed neighbours, a ratio indicating a small, dedicated internal network rather than a transit or large access provider.
  • Traffic from this AS consists of internal administrative and recovery services for the French social security system, specifically supporting the URSSAF Ile de France and the Centre Informatique Recouvrement Sud Ouest.

Notable

  • Registrants for the two prefixes are URSSAF Ile de France and Ctre Informatique Recouvrement Sud Ouest, both of which align with the announcer's identity as a specialized IT center for social security recovery.
  • The address inventory is composed of two distinct /24 blocks, one associated with the Paris URSSAF and the other with the CIRSO entity, reflecting a segmented corporate estate.

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
AS35625Eurofiber France SAS96
AS15557SFR SA24

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, 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 · 512 addresses IPv6 0 prefixes

CountryNamePrefixes
FRFrance2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS48613
Registry name
Cirsonet
Registrant
MNT-CERTIUR
Abuse contact
abuse@rezopole.net
Registered
2008-12-18
Last changed
2021-08-20
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
3 authorising AS48613
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
3 naming AS48613

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: 440 networks and 1,773 prefixes, as published 2026-10-13. 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