$ query “AS36321” --type=asn → 1 result(s)
AS36321 — CSTL
Castle Global Inc.
AS36321 is operated by Castle Global Inc. and serves as an enterprise stub network, established in the United States in 2017. The system announces 1 792 IPv4 addresses, and supports IPv6. The bulk of its IP address space is in the United States.
Basic Information
- Country
- 🇺🇸 United States
- Category
- Business
- Network Role
- Stub Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- December 11, 2017
- Last Changed
- March 04, 2026
- Last Seen
- April 09, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 5 / 5
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 1 792
- Largest IPv4 Prefix
- /23 (512 addresses)
- Largest IPv6 Prefix
- /48
- Geolocated Countries
- 🇺🇸 United States (1 792 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 1 flagged IPs out of 1 792 total (0.06%)
Connectivity Summary
- Upstream Providers
- 3 upstreams providing transit
- Degree
- 3 unique BGP neighbors
- Reach
- 0 networks in customer cone
Upstream Providers (3)
Prefix Lists
IPv4 Prefixes (5 total)
- 66.187.0.0/23 (512 addresses (/23 prefix))
- 199.83.232.0/23 (512 addresses (/23 prefix))
- 64.124.8.0/24 (256 addresses (/24 prefix))
- 74.80.208.0/24 (256 addresses (/24 prefix))
- 199.184.214.0/24 (256 addresses (/24 prefix))
IPv6 Prefixes (1 total)
- 2620:4e:e000::/48