AS19577 CASTRO TELECOM LLC 🇺🇸 US
Announcing 2 prefixes, seen at the RIS collectors.
IPv4 prefixes
2
1,280 (5 × /24)
IPv6 prefixes
0
-
Upstreams
2
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
1
transit customers observed
Customer cone
2
ASes reachable through it
Registry and operator data
- AS number
- AS19577
- Name
- CASTRO TELECOM LLC
- Organisation
- CASTRO TELECOM LLC
- Country
- 🇺🇸 US
- RIR
- ARIN
- Allocated
- 2024-06-14
- Scope
- Not Disclosed
- Peering policy
- Open
- Website
- http://tecnico.ulisboa.pt
- PeeringDB
- net/41864
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Upstreams
Networks seen providing transit to this one
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS62416 SAMPLING LINE-SERVICOS E INTERNET, LDA | 🇵🇹 PT | 5 | 3 | 82 | CAIDA |
| AS200454 Tomas Oliveira Valente Leite de Castro | 🇵🇹 PT | 3 | 2 | 39 | CAIDA |
Peers
Adjacencies that look settlement-free rather than transit
No peers observed at the collectors.
Downstreams
Networks this one appears to provide transit to
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS33733 CASTRO TELECOM LLC | 🇺🇸 US | 0 | 2 | 41 | CAIDA |
Relationships marked inferred come from where the two networks sit on the AS paths the collectors see, which is a guess and is wrong for some of them. The rest are stated by CAIDA's published inference over a much wider set of collectors.