$ query “AS18139” --type=asn → 1 result(s)
AS18139 · HISOL-CSV
Hitachi Solutions Ltd.
AS18139 is owned by Hitachi Solutions Ltd. and is an enterprise stub network, established in Japan. The system announces 1 536 IPv4 addresses, and supports IPv6. The bulk of its IP address space is in Japan.
Basic Information
- Country
- 🇯🇵 Japan
- Category
- Business
- Network Role
- Stub Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- June 10, 2026
- Last Seen
- July 16, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 6 / 5
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 1 536
- Largest IPv4 Prefix
- /23 (512 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇯🇵 Japan (1 536 IPs)
- Prefix Changed
- June 10, 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)
- AS2516 — KDDI
Prefix Lists
IPv4 Prefixes (6 total)
- 133.108.42.0/23 (512 addresses (/23 prefix))
- 133.108.58.0/24 (256 addresses (/24 prefix))
- 133.108.61.0/24 (256 addresses (/24 prefix))
- 133.108.63.0/24 (256 addresses (/24 prefix))
- 219.109.5.0/24 (256 addresses (/24 prefix))
IPv6 Prefixes (1 total)
- 2406:8e00::/32