$ query “AS131921” --type=asn → 1 result(s)
AS131921 · GMOCL
GMO GlobalSign Holdings K.K.
AS131921 belongs to GMO GlobalSign Holdings K.K. and is a hosting access provider, established in Japan. The system announces a respectable 92 928 IPv4 addresses, including a /16, and supports IPv6. Most of its address space is geolocated to Japan.
Basic Information
- Country
- 🇯🇵 Japan
- Category
- Hosting
- Network Role
- Access Provider
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- October 03, 2026
- Last Seen
- October 12, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 55 / 13
- IPv6 Prefixes (raw / aggregated)
- 13 / 4
- IPv4 Addresses
- 92 928
- Largest IPv4 Prefix
- /16 (65 536 addresses)
- Largest IPv6 Prefix
- /39
- Geolocated Countries
- 🇯🇵 Japan (92 928 IPs)
- Prefix Changed
- August 20, 2026
Reputation
- Reputation
- Good — 2 flagged IPs out of 92 928 total (0.00%)
Connectivity Summary
- Upstream Providers
- 2 upstreams providing transit
- Peers
- 9 networks exchanging traffic without transit
- Downstream Customers
- 1 downstream buying transit
- Unclassified
- 1 unclassified BGP neighbor
- Degree
- 13 unique BGP neighbors
- Reach
- 1 network in customer cone
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (55 total)
- 153.122.0.0/16 (65 536 addresses (/16 prefix))
- 153.123.0.0/20 (4 096 addresses (/20 prefix))
- 153.124.128.0/20 (4 096 addresses (/20 prefix))
- 180.222.176.0/20 (4 096 addresses (/20 prefix))
- 210.158.32.0/20 (4 096 addresses (/20 prefix))
- 133.117.152.0/21 (2 048 addresses (/21 prefix))
- 153.123.16.0/21 (2 048 addresses (/21 prefix))
- 153.124.144.0/21 (2 048 addresses (/21 prefix))
- 180.131.136.0/21 (2 048 addresses (/21 prefix))
- 133.117.148.0/22 (1 024 addresses (/22 prefix))
- 133.117.160.0/22 (1 024 addresses (/22 prefix))
- 202.237.148.0/23 (512 addresses (/23 prefix))
- 157.120.115.0/24 (256 addresses (/24 prefix))
IPv6 Prefixes (13 total)
- 2406:a1c0:200::/39
- 2406:a1c0:100::/40
- 2406:a1c0:400::/40
- 2406:a1c0:2::/48