CENIC / CalREN AS2153
BGP inherited
Cluster stats
Netblocks24
All fragments 40 blocks across 2 clusters
Cluster ID193381630
RegistryPEERINGDB
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 1 shared RIR contact/maintainer handle
Registry names 1 distinct registrant name across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

2 weekly snapshots · JSON
24 0 netblocks since 2026-07-05
2026-07-05 peak 24 2026-07-06

IP Ranges (24)

⬇ export CSV
CIDR Org name Registry Status Confidence
207.231.240.129/32 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
207.231.241.129/32 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
207.231.242.129/32 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
207.231.243.129/32 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
207.231.244.1/32 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
207.231.245.129/32 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
207.231.246.1/32 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
207.231.246.129/32 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
207.231.247.1/32 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
207.231.248.129/32 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
207.231.249.1/32 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
207.231.249.129/32 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
2001:504:b:20::129/128 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
2001:504:b:21::129/128 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
2001:504:b:30::1/128 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
2001:504:b:31::1/128 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
2001:504:b:80::129/128 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
2001:504:b:81::129/128 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
2001:504:b:88::129/128 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
2001:504:b:89::129/128 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
2001:504:b:90::1/128 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
2001:504:b:90::129/128 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
2001:504:b:91::1/128 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high
2001:504:b:91::129/128 CENIC / CalREN AS2153 PEERINGDB ASSIGNED ● high

Network trust

what's this?
RPKI hygiene: A how networks compare →
100.0% of checked blocks have valid RPKI ROA coverage (24 of 24)
No discrepancies found among checked blocks.

NIC Handles

AS2153