CASTRO TELECOM LLC

Data as of 2026-08-23
BGP inherited
Cluster stats
Netblocks13 · 3,584 IPv4 addresses
IPv6 2 prefixes (largest 2602:faa5::/32)
Cluster ID227007154
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 9 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

3 weekly snapshots · JSON
15 +8 netblocks since 2026-08-09
2026-08-09 peak 15 2026-08-23

IP Ranges (13)

⬇ export CSV
CIDR Org name Registry Status Confidence
23.147.168.0/24 CASTRO TELECOM LLC ARIN DIRECT ALLOCATION ● high
23.150.204.0/24 CASTRO TELECOM LLC BGP ANNOUNCED ● high
64.93.80.0/22 CASTRO TELECOM LLC BGP ANNOUNCED ● high
131.143.87.0/24 CASTRO TELECOM LLC ARIN ALLOCATION ● high
199.16.241.0 – 199.16.243.255 CASTRO TELECOM LLC ARIN ALLOCATION ● high
208.85.8.0/22 CASTRO TELECOM LLC ARIN DIRECT ALLOCATION ● high
2602:faa5::/32 CASTRO TELECOM LLC ARIN DIRECT ALLOCATION ● high
208.85.8.0/24 CASTRO TELECOM LLC BGP ANNOUNCED ● medium
208.85.8.0/23 CASTRO TELECOM LLC BGP ANNOUNCED ● medium
208.85.9.0/24 CASTRO TELECOM LLC BGP ANNOUNCED ● medium
208.85.10.0/24 CASTRO TELECOM LLC BGP ANNOUNCED ● medium
208.85.11.0/24 CASTRO TELECOM LLC BGP ANNOUNCED ● medium
2602:faa5::/36 CASTRO TELECOM LLC BGP ANNOUNCED ● medium

IPv6 ranges (2)

CIDR
2602:faa5::/32
2602:faa5::/36

Network trust

what's this?
RPKI hygiene: B how networks compare →
93.3% of checked blocks have valid RPKI ROA coverage (14 of 15)
Possible discrepancies (1)

These blocks are registered to CASTRO TELECOM LLC but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

23.150.204.0/24 /24 authorized for AS15040 — Ducky Networks LLC

NIC Handles

AS19577 AS200454 AS214566 AS33733 CTL-383 TOVLC-ARIN TOVLC-ARIN TOVLC-ARIN TOVLC-ARIN