AS19577 — CASTRO-TELECOM

AS19577 announces 1 IPv4 prefixes covering 1,024 addresses and 0 IPv6 prefixes.

About this network

CASTRO-TELECOM is held by Castro Telecom LLC.

What it's used for

• The space carries a single IPv4 block with netname FEMBOY-ENTERPRISES and registrant CASTRO TELECOM LLC.
• The AS announces 1024 IPv4 addresses and 27 IPv6 prefixes, with only 3 observed neighbours, indicating a small-scale access or internal network rather than a transit provider.

Notable

• The registrant CASTRO TELECOM LLC matches the AS holder, though the netname FEMBOY-ENTERPRISES suggests a specific business entity or historical naming convention within the organization.
• The address inventory consists of one IPv4 prefix (208.85.8.0/22) and a finely subdivided set of IPv6 prefixes under the 2602:faa5::/32 range.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 208.85.8.0/22

Upstream networks

• AS62416 SAMPLING LINE-SERVICOS E INTERNET, LDA
• AS200454 Tomas Oliveira Valente Leite de Castro

Downstream networks

• AS33733 CASTRO TELECOM LLC

Adjacent networks

• AS62416 SAMPLING LINE-SERVICOS E INTERNET, LDA
• AS33733 CASTRO TELECOM LLC
• AS200454 Tomas Oliveira Valente Leite de Castro

Routing security

• RPKI: 0 valid, 0 invalid and 2 not-found announcements; 1 ROAs.
• ASPA: none published.
• IRR: 50% of announcements registered; 9 route objects.
• Listed in as-sets: AS-HURRICANEV6, AS-IFOG, AS-IFOG, AS-LEGACY, AS-LEGACY, AS-LEGACY, AS-PTSERVIDOR, AS-WAVE-CUSTOMERS.