$ query “AS23600” --type=asn → 1 result(s)
AS23600 · KRNIC-GDNS-AS
Korea Internet Security Agency
AS23600 belongs to Korea Internet Security Agency and is a residential access provider, registered in South Korea since 2017. The system announces 4 096 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to South Korea. This AS has recently updated its prefix announcements.
Basic Information
- Country
- 🇰🇷 South Korea
- Category
- Internet Service Provider
- Network Role
- Access Provider
- Data Origin
- Overlaid — Community-contributed metadata overlay applied
- Registered
- August 03, 2017
- Last Changed
- May 18, 2026
- Last Seen
- June 26, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 16 / 13
- IPv6 Prefixes (raw / aggregated)
- 5 / 4
- IPv4 Addresses
- 4 096
- Largest IPv4 Prefix
- /22 (1 024 addresses)
- Largest IPv6 Prefix
- /47
- Geolocated Countries
- 🇰🇷 South Korea (4 096 IPs)
- Prefix Changed
- June 25, 2026
Reputation
- Reputation
- Good — 1 flagged IPs out of 4 096 total (0.02%)
Connectivity Summary
- Upstream Providers
- 4 upstreams providing transit
- Downstream Customers
- 2 downstreams buying transit
- Degree
- 6 unique BGP neighbors
- Reach
- 9 networks in customer cone
Upstream Providers (4)
Prefix Lists
IPv4 Prefixes (16 total)
- 1.18.132.0/22 (1 024 addresses (/22 prefix))
- 39.125.192.0/24 (256 addresses (/24 prefix))
- 39.125.228.0/24 (256 addresses (/24 prefix))
- 39.125.244.0/24 (256 addresses (/24 prefix))
- 39.127.249.0/24 (256 addresses (/24 prefix))
- 58.235.102.0/24 (256 addresses (/24 prefix))
- 202.30.45.0/24 (256 addresses (/24 prefix))
- 202.31.188.0/24 (256 addresses (/24 prefix))
- 202.31.190.0/24 (256 addresses (/24 prefix))
- 203.83.158.0/24 (256 addresses (/24 prefix))
- 219.251.142.0/24 (256 addresses (/24 prefix))
- 219.251.156.0/24 (256 addresses (/24 prefix))
- 221.139.191.0/24 (256 addresses (/24 prefix))
IPv6 Prefixes (5 total)
- 2001:dcc:702::/47
- 2001:dc5:a::/48
- 2001:dcc:700::/48
- 2001:dcc:1000::/48