Centre National De La Recherche Scientifique — IP ranges & network footprint

IP Ranges (6)

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CIDR	Org name	Registry	Status	Confidence
132.227.0.0/16	Centre National De La Recherche Scientifique (CNRS)	RIPE	LEGACY	● high
134.158.0.0/16	Centre National De La Recherche Scientifique (CNRS)	RIPE	LEGACY	● high
147.173.0.0/16	Centre National De La Recherche Scientifique (CNRS)	RIPE	LEGACY	● high
157.136.0.0/16	Centre National De La Recherche Scientifique (CNRS)	RIPE	LEGACY	● high
163.9.0.0/16	Centre National De La Recherche Scientifique (CNRS)	RIPE	LEGACY	● high
192.93.53.0/24	Centre National De La Recherche Scientifique (CNRS)	RIPE	LEGACY	● high

Other domains hosted in this network

what's this?

dariah.eu openedition.org labocleo.org paris-saclay.fr eman-archives.org in2p3.fr openjerusalem.org cnrs.fr gis-reseau-asie.org isidore.science naissanceethnologie.fr hypotheses.org huma-num.fr

Possibly related to this organisation

what's this?

Same name family

Separately-registered clusters whose names share “Centre National De La” — often per-country or per-system registrations of the same brand, occasionally a different organisation sharing the name. Not counted in this organisation's own footprint.

Centre National de la Danse 4 blocks
Centre National de la Fonction Publique Territoriale EPA 1 blocks
CENTRE_NATIONAL_DE_LA_CINEMATOGRAPHIE-FRO2005185872DIR 1 blocks
Centre-National-de-la-Danse1 1 blocks
Centre-National-de-la-Danse2 1 blocks

Sub-allocations under carriers

IP blocks an ISP reassigned to a similarly-named customer — decoded from the ISP's own naming convention, not a direct registration.

Centre Dramatique National Nanterre Amandiers via COLT Technology Services Group Limited sub-allocation
distributioninternationalcentrefzco-EMIRNET via EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC sub-allocation
NATIONALHEATTREATMENTCENTRELTD via Eircom Limited sub-allocation
THEATRE-DE-L-UNION-CENTRE-DRAMATIQUE-NATIONAL via Societe Francaise Du Radiotelephone - SFR SA sub-allocation
ADIT-NORTH-INTERNATIONAL-CENTRE-DIGITAL-CONTENT-LIVERPOOL via Virgin Media Limited sub-allocation
DONGFANG-INTERNATIONAL-CENTRE via China Telecom sub-allocation
CENTRE-NATIONAL-DU-LIVRE via Societe Francaise Du Radiotelephone - SFR SA sub-allocation
CENTRE_INTERNATIONAL_DE_CREATIONS_THEATRALES-3495-CLS-0MQ96BH65 via Completel SAS sub-allocation

Network trust

what's this?

RPKI hygiene: C how networks compare →

50.0% of checked blocks have valid RPKI ROA coverage (3 of 6)

Possible discrepancies (2)

These blocks are registered to Centre National De La Recherche Scientifique (CNRS) but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

147.173.0.0/16 /16	authorized for AS1942 — Renater
134.158.0.0/16 /16	authorized for AS789 — Renater

Routed via provider/NREN (1)

These blocks are cryptographically authorized for this organisation's national research & education network or transit provider — expected topology for an institution that routes through it, not a discrepancy.

163.9.0.0/16 /16

routed via AS2200 — RENATER (Renater)

NIC Handles

AS789-MNT DUMY-RIPE DUMY-RIPE ORG-CCIN3-RIPE ORG-CDRI18-RIPE ORG-CNDL8-RIPE ORG-FA666-RIPE RENATER-MNT RIPE-NCC-LEGACY-MNT

Netblocks	6 · 327,936 IPv4 addresses
Also registered under this name	14 netblocks across 6 separate records
Record ID	252725596
Registry	RIPE
Customers	see who runs inside this network →

Attribution	BGP parent (inherited)
Shared handles	clustered on 9 shared RIR contact/maintainer handles
Registry names	1 distinct registrant name across these blocks
full provenance (JSON) → · how attribution works · report an issue