AS21589 CSJ-INTERNET - City of San Jose
🇺🇸ARINassigned
Announced Prefixes (BGP)
26total
25 IPv41 IPv6
IPv4 Addresses
Allocated (RIR)65,536
Announced (BGP)10,752
IPv6 Addresses
Allocated (RIR)0
Announced (BGP)1.2×10²⁴
Routing hygiene
Score 50/100 · High riskRPKI ROA coverage
3.8%
no RPKI invalid prefixes
IRR route objects
3.8%
no origin mismatches
Hijack signals
0
0 announced against others' ROAs, 0 own announced by others
Upstreams
3
diversity 32/100
- 96% of announced prefixes (25 of 26) have no valid ROA
- 96% of announced prefixes (25 of 26) have no IRR route object for this ASN
- Routes concentrated on one upstream (81% of routes)
Based on 26 announced prefixes, updated daily (2026-10-24). How the score works · RPKI explained
Announced Prefixes
(BGP)26|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| No ROA | - | - | |
| No ROA | - | - | |
| No ROA | - | - | |
| No ROA | - | - | |
| No ROA | - | - | |
| No ROA | - | - | |
| No ROA | - | - | |
| No ROA | - | - | |
| No ROA | - | - | |
| No ROA | - | - |
1-10 of 26
1 / 3
Allocated Prefixes
(RIR)1Prefix | Country | RIR | Status |
|---|---|---|---|
| 156.39.0.0/16 | 🇺🇸 US | ARIN | allocated |
ASPA
No ASPA
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- ASPA explainedWhy AS21589 should publish an ASPA object
- IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/21589Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/21589" | jq