University Hospital

Data as of 2026-08-30
BGP inherited
Cluster stats
Netblocks6 · 536 IPv4 addresses
IPv6 3 prefixes (largest 2a00:2381:2c23::/48)
Registered in United Kingdom (2) · United States (1)
All fragments 16 blocks across 6 clusters
Cluster ID233773443
RegistryARIN
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 10 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (6)

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CIDR Org name Registry Status Confidence
192.51.192.0/23 University Hospital ARIN DIRECT ALLOCATION ● high
81.145.128.64/28 UNIVERSITY-HOSPITAL RIPE ASSIGNED PA ● low
195.171.28.240/29 UNIVERSITY-HOSPITAL RIPE ASSIGNED PA ● low
2a00:2381:2c23::/48 UNIVERSITY-HOSPITAL RIPE AGGREGATED-BY-LIR ● low
2a00:2381:2c23::/56 UNIVERSITY-HOSPITAL RIPE ASSIGNED ● low
2a00:2381:d7e3::/48 UNIVERSITY-HOSPITAL RIPE AGGREGATED-BY-LIR ● low

IPv6 ranges (3)

CIDR
2a00:2381:2c23::/48
2a00:2381:d7e3::/48
2a00:2381:2c23::/56

Network trust

what's this?
RPKI hygiene: A how networks compare →
100.0% of checked blocks have valid RPKI ROA coverage (6 of 6)
Possible discrepancies (4)

These blocks are registered to University Hospital 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.

2a00:2381:2c23::/48 /48 authorized for AS2856 — British Telecommunications Limited
2a00:2381:d7e3::/48 /48 authorized for AS2856 — British Telecommunications Limited
2a00:2381:2c23::/56 /56 authorized for AS2856 — British Telecommunications Limited
192.51.192.0/23 /23 authorized for AS21976 — NJEDge.Net, Inc.

NIC Handles

BTNET-MNT CADOG4-ARIN CADOG4-ARIN DUMY-RIPE DUMY-RIPE UH-67 UHADM-ARIN UHADM-ARIN UHADM-ARIN UHADM-ARIN