Contra Costa County Office of Education

Data as of 2026-07-26
BGP inherited
Cluster stats
Netblocks6 · 70,912 IPv4 addresses
IPv6 2 prefixes (largest 2607:fb78::/32)
All fragments 11 blocks across 2 clusters
Cluster ID214452089
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 21 shared RIR contact/maintainer handles
Registry names 4 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

3 weekly snapshots · JSON
7 +1 netblocks since 2026-07-13
2026-07-13 peak 7 2026-07-26

IP Ranges (6)

⬇ export CSV
CIDR Org name Registry Status Confidence
23.182.248.0/24 Contra Costa County Employees Retirement Association BGP ANNOUNCED ● high
169.199.0.0/16 Contra Costa County Office of Education BGP ANNOUNCED ● high
2607:fb78::/32 Contra Costa County Office of Education BGP ANNOUNCED ● high
2620:c9:e000::/48 Contra Costa County Employees Retirement Association BGP ANNOUNCED ● high
198.160.16.0 – 198.160.25.255 Contra Costa County ARIN DIRECT ALLOCATION ● low
198.245.227.0 – 198.245.236.255 Contra Costa County ARIN DIRECT ALLOCATION ● low

IPv6 ranges (2)

CIDR
2607:fb78::/32
2620:c9:e000::/48

Network trust

what's this?
RPKI hygiene: C how networks compare →
71.4% of checked blocks have valid RPKI ROA coverage (5 of 7)
No discrepancies found among checked blocks.

NIC Handles

AS23309 AS394763 CCC-16 CCCOE-Z HCCC-ARIN HCCC-ARIN HCCC-ARIN NASHS7-ARIN NASHS7-ARIN NOCCC-ARIN NOCCC-ARIN NOCCC-ARIN +9 more