$ query “AS24287” --type=asn → 1 result(s)
AS24287 · TEIN2-JP
National Institute of Informatics
AS24287 belongs to National Institute of Informatics and is an educational/research access provider, established in Japan. The system announces 256 IPv4 addresses, and supports IPv6. The bulk of its IP address space is in Japan.
Basic Information
- Country
- 🇯🇵 Japan
- Category
- Education/Research
- Network Role
- Access Provider
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- March 04, 2026
- Last Seen
- April 28, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 1 / 1
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 256
- Largest IPv4 Prefix
- /24 (256 addresses)
- Largest IPv6 Prefix
- /48
- Geolocated Countries
- 🇯🇵 Japan (256 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 2 upstreams providing transit
- Downstream Customers
- 1 downstream buying transit
- Unclassified
- 1 unclassified BGP neighbor
- Degree
- 4 unique BGP neighbors
- Reach
- 1 611 networks in customer cone
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (1 total)
- 192.50.12.0/24 (256 addresses (/24 prefix))
IPv6 Prefixes (1 total)
- 2001:df0:46::/48