$ query “AS17939” --type=asn → 1 result(s)
AS17939 · MCN-NET01
miyazaki cabletelevision network Co. LTD
AS17939 belongs to miyazaki cabletelevision network Co. LTD and is a content network, based in Japan. The system announces a respectable 71 680 IPv4 addresses, and supports IPv6. The bulk of its IP address space is in Japan.
Basic Information
- Country
- 🇯🇵 Japan
- Category
- Internet Service Provider
- Network Role
- Content Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- June 30, 2026
- Last Seen
- July 26, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 10 / 10
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 71 680
- Largest IPv4 Prefix
- /17 (32 768 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇯🇵 Japan (112 640 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 3 upstreams providing transit
- Peers
- 69 networks exchanging traffic without transit
- Degree
- 72 unique BGP neighbors
- Reach
- 0 networks in customer cone
Upstream Providers (3)
Prefix Lists
IPv4 Prefixes (10 total)
- 123.176.128.0/17 (32 768 addresses (/17 prefix))
- 192.244.32.0/19 (8 192 addresses (/19 prefix))
- 218.216.32.0/19 (8 192 addresses (/19 prefix))
- 150.91.208.0/20 (4 096 addresses (/20 prefix))
- 202.122.176.0/20 (4 096 addresses (/20 prefix))
- 202.170.96.0/20 (4 096 addresses (/20 prefix))
- 203.140.208.0/20 (4 096 addresses (/20 prefix))
- 219.105.64.0/20 (4 096 addresses (/20 prefix))
- 103.15.188.0/22 (1 024 addresses (/22 prefix))
- 219.100.216.0/22 (1 024 addresses (/22 prefix))
IPv6 Prefixes (1 total)
- 2405:c700::/32