University of California, Riverside

Data as of 2026-10-18
BGP inherited
This organisation
Netblocks6 · 131,328 IPv4 addresses
IPv6 2 prefixes (largest 2607:f290::/32)
Also registered under this name 100 netblocks across 9 separate records
Record ID250156924
RegistryBGP
Customerssee who runs inside 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
138.23.0.0/16 University of California, Riverside ARIN DIRECT ALLOCATION ● high
138.23.104.0/22 University of California, Riverside BGP ANNOUNCED ● high
169.235.0.0/16 University of California, Riverside ARIN DIRECT ALLOCATION ● high
192.31.146.0/24 University of California, Riverside ARIN DIRECT ALLOCATION ● high
2607:f290::/32 University of California, Riverside BGP ANNOUNCED ● high
2607:f290:10::/48 University of California, Riverside BGP ANNOUNCED ● high

IPv6 ranges (2)

CIDR
2607:f290::/32
2607:f290:10::/48

Footprint over time

16 weekly snapshots · JSON
9 +3 netblocks since 2026-07-05
2026-07-05 peak 9 2026-10-18

NIC Handles

ABUSE1631-ARIN AS6106 FISHE693-ARIN KENNE340-ARIN KENNE340-ARIN SYSTE802-ARIN SYSTE802-ARIN SYSTE802-ARIN UNIVER-211 UNIVER-211-Z