$ query “AS2907” --type=asn → 1 result(s)
AS2907 — SINET-AS
Research Organization of Information and Systems National Institute of Informatics
AS2907 is a major transit provider run by Research Organization of Information and Systems National…, based in Japan. The network announces an impressive 8.9 million IPv4 addresses, including a /15. Supports IPv6.
- Top 5% — Top 5% of all autonomous systems by reach and degree
- #6 in Japan — Top 10 by reach within country
Basic Information
- Country
- 🇯🇵 Japan
- Category
- Education/Research
- Network Role
- Major Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- March 04, 2026
- Last Seen
- March 04, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 601 / 462
- IPv6 Prefixes (raw / aggregated)
- 2 / 2
- IPv4 Addresses
- 8 883 200
- Largest IPv4 Prefix
- /15 (131 072 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇯🇵 JP (506 IPs), 🇦🇺 AU (27 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 1 flagged IPs out of 8 883 200 total (0.00%)
- Open Proxies
- 1 known open proxies in this network
Connectivity Summary
- Upstream Providers
- 2 upstream autonomous systems providing transit
- Peers
- 92 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 94 downstream autonomous systems buying transit
- Degree
- 190 unique BGP neighbors (providers + customers + peers)
- Reach
- 3 029 — customer cone size measuring network influence
- Degree Rank
- #701
- Reach Rank
- #596
- Country Rank
- #6
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (601 total)
- 133.14.0.0/15 (131 072 addresses)
- 133.16.0.0/15 (131 072 addresses)
- 133.20.0.0/15 (131 072 addresses)
- 133.34.0.0/15 (131 072 addresses)
- 133.38.0.0/15 (131 072 addresses)
- 133.44.0.0/15 (131 072 addresses)
- 133.48.0.0/15 (131 072 addresses)
- 133.62.0.0/15 (131 072 addresses)
- 133.72.0.0/15 (131 072 addresses)
- 133.82.0.0/15 (131 072 addresses)
- 133.84.0.0/15 (131 072 addresses)
- 133.94.0.0/15 (131 072 addresses)
- 133.98.0.0/15 (131 072 addresses)
- 133.102.0.0/15 (131 072 addresses)
- 150.42.0.0/15 (131 072 addresses)
- 160.28.0.0/15 (131 072 addresses)
- 163.214.0.0/15 (131 072 addresses)
- 130.34.0.0/16 (65 536 addresses)
- 130.153.0.0/16 (65 536 addresses)
- 131.206.0.0/16 (65 536 addresses)
- 133.7.0.0/16 (65 536 addresses)
- 133.8.0.0/16 (65 536 addresses)
- 133.10.0.0/16 (65 536 addresses)
- 133.12.0.0/16 (65 536 addresses)
- 133.23.0.0/16 (65 536 addresses)
- 133.29.0.0/16 (65 536 addresses)
- 133.30.0.0/16 (65 536 addresses)
- 133.37.0.0/16 (65 536 addresses)
- 133.46.0.0/16 (65 536 addresses)
- 133.52.0.0/16 (65 536 addresses)
- 133.55.0.0/16 (65 536 addresses)
- 133.57.0.0/16 (65 536 addresses)
- 133.58.0.0/16 (65 536 addresses)
- 133.60.0.0/16 (65 536 addresses)
- 133.65.0.0/16 (65 536 addresses)
- 133.68.0.0/16 (65 536 addresses)
- 133.74.0.0/16 (65 536 addresses)
- 133.77.0.0/16 (65 536 addresses)
- 133.78.0.0/16 (65 536 addresses)
- 133.81.0.0/16 (65 536 addresses)
- 133.86.0.0/16 (65 536 addresses)
- 133.89.0.0/16 (65 536 addresses)
- 133.96.0.0/16 (65 536 addresses)
- 133.104.0.0/16 (65 536 addresses)
- 133.187.0.0/16 (65 536 addresses)
- 133.220.0.0/16 (65 536 addresses)
- 136.187.0.0/16 (65 536 addresses)
- 144.213.0.0/16 (65 536 addresses)
- 147.157.0.0/16 (65 536 addresses)
- 150.7.0.0/16 (65 536 addresses)
IPv6 Prefixes (2 total)
- 2001:2f8::/32
- 2405:d200::/32