AS200454

Name: AS200454 — Tomas Oliveira Valente Leite de Castro
Creator: ipdex

Tomas Oliveira Valente Leite de Castro Education registered in United States

3IPv4 prefixes

3IPv6 prefixes

50%RPKI-valid

#10,876AS Rank

327/327RIS visibility

#4,646Rank in United States

2022-12-19Allocated

Tomas Oliveira Valente Leite de Castro (AS200454) — Education, registered in United States. announces 3 IPv4 prefixes + 3 IPv6 prefixes. Rank in United States: #4646. Allocated: 2022-12-19.

IPv4 3IPv6 3

Announced prefixes · 6

v4 131.143.87.0/24 valid
v4 199.16.240.0/22 unknown
v4 23.147.168.0/24 unknown
v6 2602:faa5::/36 unknown
v6 2a0a:6040:aa00::/40 valid
v6 2a0f:b241:10::/48 valid

RPKI: rpki.cloudflare.com · 2026-06-17

Routing: 3 IPv4 · 3 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-17

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	6
2026-06-13	6

Internet Exchanges · 2

LIS-IX Lisbon 20 Gbps
KCIX Kansas City 10 Gbps

Facilities · 3

3 Facilities · 2 Countries

AS topology · Customer cone 2

Providers · 2

AS52025 ParadoxNetworks Limited
AS12186 GVVME

Peers · 1

AS6939 Hurricane Electric LLC

Customers · 1

AS19577 CASTRO TELECOM LLC

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