$ query “AS4224” --type=asn → 1 result(s)
AS4224 · CALYX-AS
The Calyx Institute
AS4224 is owned by The Calyx Institute and is an educational/research stub network, based in the United States since 1995. The system announces 512 IPv4 addresses, and supports IPv6. The bulk of its IP address space is in the United States.
- Pioneer — Registered before the year 2000
Basic Information
- Country
- 🇺🇸 United States
- Category
- Education/Research
- Network Role
- Stub Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- January 09, 1995
- Last Changed
- October 01, 2026
- Last Seen
- October 13, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 2 / 2
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 512
- Largest IPv4 Prefix
- /24 (256 addresses)
- Largest IPv6 Prefix
- /48
- Geolocated Countries
- 🇺🇸 United States (512 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 1 upstream providing transit
- Degree
- 1 unique BGP neighbor
- Reach
- 0 networks in customer cone
Upstream Providers (1)
- AS6939 — HURRICANE
Prefix Lists
IPv4 Prefixes (2 total)
- 162.247.72.0/24 (256 addresses (/24 prefix))
- 185.220.103.0/24 (256 addresses (/24 prefix))
IPv6 Prefixes (1 total)
- 2602:fef9:100::/48