University of California, Riverside

BGP inherited
Cluster stats
Netblocks8 · 263,418 IPv4 addresses
All fragments 82 blocks across 8 clusters
Cluster ID214435251
RegistryBGP
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

Footprint over time

5 weekly snapshots · JSON
8 +2 netblocks since 2026-07-05
2026-07-05 peak 8 2026-07-26

IP Ranges (8)

⬇ export CSV
CIDR Org name Registry Status Confidence
138.23.0.0/16 University of California, Riverside BGP ANNOUNCED ● high
138.23.104.0/22 University of California, Riverside BGP ANNOUNCED ● high
169.235.0.0/16 University of California, Riverside BGP ANNOUNCED ● high
192.31.146.0/24 University of California, Riverside BGP ANNOUNCED ● high
2607:f290::/32 University of California, Riverside BGP ANNOUNCED ● high
2607:f290:10::/48 University of California, Riverside BGP ANNOUNCED ● high
138.23.0.0/16 University of California, Riverside ARIN DIRECT ALLOCATION ● low
169.235.0.0/16 University of California, Riverside ARIN DIRECT ALLOCATION ● low

Domains hosted in this network

what's this?
ucr.edu

NIC Handles

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