$ query “AS23780” --type=asn → 1 result(s)
AS23780 · CTB
CTB Media Inc.
AS23780 is run by CTB Media Inc. and is a content network, registered in Japan. The system announces a respectable 16 384 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in Japan.
Basic Information
- Country
- 🇯🇵 Japan
- Category
- Hosting
- Network Role
- Content Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- June 30, 2026
- Last Seen
- July 25, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 5 / 5
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 16 384
- Largest IPv4 Prefix
- /19 (8 192 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇯🇵 Japan (17 408 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 3 upstreams providing transit
- Peers
- 60 networks exchanging traffic without transit
- Degree
- 63 unique BGP neighbors
- Reach
- 0 networks in customer cone
Upstream Providers (3)
Prefix Lists
IPv4 Prefixes (5 total)
- 211.19.224.0/19 (8 192 addresses (/19 prefix))
- 211.15.112.0/20 (4 096 addresses (/20 prefix))
- 49.128.24.0/21 (2 048 addresses (/21 prefix))
- 49.128.96.0/22 (1 024 addresses (/22 prefix))
- 203.201.52.0/22 (1 024 addresses (/22 prefix))
IPv6 Prefixes (1 total)
- 2402:6c80::/32