$ query “AS45400” --type=asn → 1 result(s)

AS45400 · NICNET

Korea Telecom

AS45400 is operated by Korea Telecom and serves as a mid-size transit provider, established in South Korea. The system announces a respectable 25 344 IPv4 addresses. Most of its address space is geolocated to South Korea. No IPv6 support — it's 2026, just saying.

Basic Information

Country
🇰🇷 South Korea
Category
Internet Service Provider
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Last Changed
May 01, 2026
Last Seen
April 30, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
98 / 81
IPv6 Prefixes (raw / aggregated)
0 / 0
IPv4 Addresses
25 344
Largest IPv4 Prefix
/21 (2 048 addresses)
Geolocated Countries
🇰🇷 South Korea (25 344 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
1 upstream providing transit
Downstream Customers
11 downstreams buying transit
Degree
12 unique BGP neighbors
Reach
11 networks in customer cone

Upstream Providers (1)

Prefix Lists

IPv4 Prefixes (98 total)

  • 210.104.8.0/21 (2 048 addresses (/21 prefix))
  • 211.46.92.0/22 (1 024 addresses (/22 prefix))
  • 210.99.158.0/23 (512 addresses (/23 prefix))
  • 211.185.244.0/23 (512 addresses (/23 prefix))
  • 180.92.250.0/23 (512 addresses (/23 prefix))
  • 211.34.114.0/23 (512 addresses (/23 prefix))
  • 210.204.226.0/23 (512 addresses (/23 prefix))
  • 210.179.218.0/23 (512 addresses (/23 prefix))
  • 210.179.140.0/23 (512 addresses (/23 prefix))
  • 210.104.26.0/23 (512 addresses (/23 prefix))
  • 210.117.195.0/24 (256 addresses (/24 prefix))
  • 210.90.80.0/24 (256 addresses (/24 prefix))
  • 210.95.12.0/24 (256 addresses (/24 prefix))
  • 210.95.19.0/24 (256 addresses (/24 prefix))
  • 210.96.31.0/24 (256 addresses (/24 prefix))
  • 210.96.84.0/24 (256 addresses (/24 prefix))
  • 210.96.115.0/24 (256 addresses (/24 prefix))
  • 210.96.121.0/24 (256 addresses (/24 prefix))
  • 210.97.6.0/24 (256 addresses (/24 prefix))
  • 210.97.119.0/24 (256 addresses (/24 prefix))
  • 210.99.10.0/24 (256 addresses (/24 prefix))
  • 210.90.199.0/24 (256 addresses (/24 prefix))
  • 210.99.168.0/24 (256 addresses (/24 prefix))
  • 210.100.136.0/24 (256 addresses (/24 prefix))
  • 210.100.168.0/24 (256 addresses (/24 prefix))
  • 210.100.214.0/24 (256 addresses (/24 prefix))
  • 210.103.55.0/24 (256 addresses (/24 prefix))
  • 210.103.111.0/24 (256 addresses (/24 prefix))
  • 210.103.115.0/24 (256 addresses (/24 prefix))
  • 210.90.191.0/24 (256 addresses (/24 prefix))
  • 210.104.20.0/24 (256 addresses (/24 prefix))
  • 210.104.22.0/24 (256 addresses (/24 prefix))
  • 210.90.82.0/24 (256 addresses (/24 prefix))
  • 210.104.28.0/24 (256 addresses (/24 prefix))
  • 210.104.44.0/24 (256 addresses (/24 prefix))
  • 210.104.102.0/24 (256 addresses (/24 prefix))
  • 210.104.123.0/24 (256 addresses (/24 prefix))
  • 210.104.138.0/24 (256 addresses (/24 prefix))
  • 210.104.218.0/24 (256 addresses (/24 prefix))
  • 210.104.237.0/24 (256 addresses (/24 prefix))
  • 180.92.241.0/24 (256 addresses (/24 prefix))
  • 210.117.199.0/24 (256 addresses (/24 prefix))
  • 210.178.187.0/24 (256 addresses (/24 prefix))
  • 210.179.87.0/24 (256 addresses (/24 prefix))
  • 210.179.88.0/24 (256 addresses (/24 prefix))
  • 210.90.214.0/24 (256 addresses (/24 prefix))
  • 210.179.159.0/24 (256 addresses (/24 prefix))
  • 210.90.6.0/24 (256 addresses (/24 prefix))
  • 210.204.213.0/24 (256 addresses (/24 prefix))
  • 203.254.123.0/24 (256 addresses (/24 prefix))
  • and 31 more