AS19577 CASTRO-TELECOM - CASTRO TELECOM LLC
🇺🇸ARINassigned
Announced Prefixes (BGP)
3total
2 IPv41 IPv6
IPv4 Addresses
Allocated (RIR)1,024
Announced (BGP)1,280
IPv6 Addresses
Allocated (RIR)7.9×10²⁸
Announced (BGP)7.9×10²⁸
Routing hygiene
Score 41/100 · Medium riskRPKI ROA coverage
0%
no RPKI invalid prefixes
IRR route objects
66.7%
1 prefix registered for another origin
Hijack signals
0
0 announced against others' ROAs, 0 own announced by others
Upstreams
2
diversity 44/100
- 100% of announced prefixes (3 of 3) have no valid ROA
- 33% of announced prefixes (1 of 3) have no IRR route object for this ASN
Based on 3 announced prefixes, updated daily (2026-10-24). How the score works · RPKI explained
Announced Prefixes
(BGP)3|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| No ROA | ARIN | 2026-10-25 | |
| No ROA | - | 2026-10-25 | |
| No ROA | ARIN | 2026-10-25 |
Allocated Prefixes
(RIR)2Prefix | Country | RIR | Status |
|---|---|---|---|
| 208.85.8.0/22 | 🇺🇸 US | ARIN | allocated |
| 2602:faa5::/32 | 🇺🇸 US | ARIN | allocated |
All 3 announced prefixes of AS19577 →
BGP Neighbours
(seen in AS paths)Upstreams (2)
Networks AS19577 hands its own prefixes to: transit providers, or peers at an exchange.
Downstreams (1)
Networks whose own prefixes AS19577 passes on: usually its customers.
- AS33733CASTRO TELECOM1
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 AS19577 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/19577Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/19577" | jq