Erasmus Universiteit Rotterdam
Cluster stats
Netblocks5
All fragments 6 blocks across 2 clusters
Cluster ID191877689
RegistryRIPE
Customersfind customers using this network →
Evidence & provenance ?
Attribution unresolved
Shared handles clustered on 9 shared RIR contact/maintainer handles
Registry names 3 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

IP Ranges (5)

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CIDR Org name Registry Status Confidence
130.115.0.0/16 Erasmus Universiteit Rotterdam RIPE LEGACY ● high
145.5.0.0/16 Erasmus Universiteit Rotterdam RIPE LEGACY ● high
156.83.0.0/16 Erasmus MC RIPE LEGACY ● high
217.100.106.112/29 ERASMUS_UNIVERSITEIT_ROTTERDAM RIPE ASSIGNED PA ● low
2001:41f0:1553::/48 ERASMUS_UNIVERSITEIT_ROTTERDAM RIPE ASSIGNED ● low

Network trust

what's this?
RPKI hygiene: A how networks compare →
100.0% of checked blocks have valid RPKI ROA coverage (5 of 5)
Possible discrepancies (4)

These blocks are registered to Erasmus Universiteit Rotterdam but cryptographically authorized for a different, unrelated network (2 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

2001:41f0:1553::/48 /48 authorized for AS33915 — Vodafone Libertel B.V.
156.83.0.0/16 /16 authorized for AS1103 — SURF B.V.
130.115.0.0/16 /16 authorized for AS1103 — SURF B.V.
145.5.0.0/16 /16 authorized for AS1103 — SURF B.V.

NIC Handles

DUMY-RIPE DUMY-RIPE JW801-RIPE-MNT ORG-EMC2-RIPE ORG-EUR2-RIPE RIPE-NCC-LEGACY-MNT SN-LIR-MNT SURF-AUTO-MNT ZIGGO-AUTOREG1