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AS45400 Korea Telecom

NICNET-KR - Korea Telecom · registered in South Korea

IPv4 addresses25,85683 prefixes · <0.001% of announced IPv4
Rank in South Korea#148largest network in KR by IPv4 space, of 853 · 0.02% of KR
Rank worldwide#5,361of 79,396 networks with IPv4
IPv6noneno IPv6 routes announced
CountrySouth Korea869 ASNs registered there
Open AS45400 in ASN lookup Look up an IP in this network (180.92.241.1) All networks in South Korea

IPv4 prefixes

All 83 prefixes, in address order.

  • 180.92.241.0/24
  • 180.92.248.0/24
  • 180.92.250.0/23
  • 180.92.254.0/24
  • 203.242.5.0/24
  • 203.254.123.0/24
  • 210.90.6.0/24
  • 210.90.80.0/24
  • 210.90.82.0/24
  • 210.90.191.0/24
  • 210.90.199.0/24
  • 210.90.214.0/24
  • 210.95.12.0/24
  • 210.95.19.0/24
  • 210.96.31.0/24
  • 210.96.84.0/24
  • 210.96.115.0/24
  • 210.96.121.0/24
  • 210.97.6.0/24
  • 210.97.119.0/24
  • 210.99.10.0/24
  • 210.99.158.0/23
  • 210.99.168.0/24
  • 210.100.136.0/24
  • 210.100.168.0/24
  • 210.100.214.0/24
  • 210.103.55.0/24
  • 210.103.111.0/24
  • 210.103.115.0/24
  • 210.104.8.0/21
  • 210.104.20.0/24
  • 210.104.22.0/24
  • 210.104.26.0/23
  • 210.104.28.0/24
  • 210.104.44.0/24
  • 210.104.102.0/24
  • 210.104.123.0/24
  • 210.104.138.0/24
  • 210.104.218.0/24
  • 210.104.237.0/24
  • 210.117.195.0/24
  • 210.117.199.0/24
  • 210.119.249.0/24
  • 210.119.250.0/24
  • 210.178.187.0/24
  • 210.179.87.0/24
  • 210.179.88.0/24
  • 210.179.140.0/23
  • 210.179.159.0/24
  • 210.179.218.0/23
  • 210.204.213.0/24
  • 210.204.226.0/23
  • 210.211.1.0/24
  • 210.211.15.0/24
  • 211.34.114.0/23
  • 211.34.147.0/24
  • 211.34.174.0/24
  • 211.43.142.0/24
  • 211.46.92.0/22
  • 211.46.125.0/24
  • 211.57.43.0/24
  • 211.114.15.0/24
  • 211.114.27.0/24
  • 211.114.36.0/24
  • 211.114.101.0/24
  • 211.114.171.0/24
  • 211.184.16.0/24
  • 211.185.244.0/23
  • 211.236.67.0/24
  • 211.236.106.0/24
  • 211.236.118.0/24
  • 211.236.120.0/24
  • 211.236.123.0/24
  • 211.236.124.0/24
  • 211.252.223.0/24
  • 211.252.239.0/24
  • 211.253.65.0/24
  • 211.253.67.0/24
  • 211.253.149.0/24
  • 211.253.150.0/24
  • 211.253.250.0/24
  • 211.255.123.0/24
  • 221.145.178.0/24

Other ASNs named Korea Telecom

3 other networks use the same organisation name; together with AS45400 they announce 46,408,960 IPv4 addresses.

ASNNameIPv4 addresses
AS4766KIXS-AS-KR-KR - Korea Telecom KR46,382,848
AS4040KORNET-PS-AS-KR-KR - Korea Telecom KR256
AS3559KORNET-AS-KR-KR - Korea Telecom KRIPv6 only

Similar-sized networks in South Korea

ASNNameIPv4 addresses
AS38107#145 CDNETWORKS-AS-KR-KR - CDNetworks27,136
AS9524#146 HMC-AS-KR - Hyundai Autoever Corp.26,880
AS152205#147 IMOBI-AS-KR-KR - imobi inc,26,112
AS9323#149 DGUNET-AS-KR - DONGGUK University24,832
AS9754#150 CSU-AS-KR - CHOSUN UNIVERSITY24,832
AS10160#151 KDDIKOREA-AS-KR-KR - KDDI KOREA24,576

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources