IP ranges

Korea Telecom (KT) IP ranges

Every IPv4 and IPv6 range that Korea Telecom (KT) (AS4766) currently announces on the internet, with CIDR and start/end IP, free to download as TXT or CSV. Data snapshot: 2026-11-02.

Korea Telecom (KT) announces 2,155 IPv4 prefixes covering 47,219,200 addresses, and 53 IPv6 prefixes, through AS4766. The lists below are a snapshot of 2026-11-02 taken from the public BGP routing table, sorted by address and kept as announced.

ASNAS4766

IPv4 prefixes2,155

IPv4 addresses47,219,200Overlaps are counted once

IPv6 prefixes53

Data snapshot2026-11-02

Download the complete list

The complete list has 2,208 ranges (IPv4 and IPv6). TXT has one CIDR per line; CSV has the columns cidr, version, start_ip, end_ip and addresses.

Download TXT Download CSV IPv4 only (TXT)IPv6 only (TXT)

Korea Telecom (KT) IPv4 ranges

IPv4 ranges announced by Korea Telecom (KT): CIDR, start and end IP, address count
CIDR	Start IP – end IP	Addresses
1.96.0.0/14	1.96.0.0–1.99.255.255	262,144
1.100.0.0/14	1.100.0.0–1.103.255.255	262,144
1.104.0.0/14	1.104.0.0–1.107.255.255	262,144
1.108.0.0/14	1.108.0.0–1.111.255.255	262,144
1.231.13.0/24	1.231.13.0–1.231.13.255	256
1.231.122.0/24	1.231.122.0–1.231.122.255	256
1.231.136.0/24	1.231.136.0–1.231.136.255	256
1.231.182.0/24	1.231.182.0–1.231.182.255	256
1.231.183.0/24	1.231.183.0–1.231.183.255	256
1.231.184.0/24	1.231.184.0–1.231.184.255	256
1.231.185.0/24	1.231.185.0–1.231.185.255	256
1.231.194.0/24	1.231.194.0–1.231.194.255	256
1.231.195.0/24	1.231.195.0–1.231.195.255	256
1.231.196.0/24	1.231.196.0–1.231.196.255	256
1.231.197.0/24	1.231.197.0–1.231.197.255	256
1.231.198.0/24	1.231.198.0–1.231.198.255	256
9.233.32.0/20	9.233.32.0–9.233.47.255	4,096
13.143.88.0/22	13.143.88.0–13.143.91.255	1,024
13.143.92.0/22	13.143.92.0–13.143.95.255	1,024
13.143.96.0/22	13.143.96.0–13.143.99.255	1,024
14.32.0.0/13	14.32.0.0–14.39.255.255	524,288
14.40.0.0/13	14.40.0.0–14.47.255.255	524,288
14.42.223.0/24	14.42.223.0–14.42.223.255	256
14.46.54.0/24	14.46.54.0–14.46.54.255	256
14.46.246.0/23	14.46.246.0–14.46.247.255	512
14.46.248.0/21	14.46.248.0–14.46.255.255	2,048
14.48.0.0/13	14.48.0.0–14.55.255.255	524,288
14.49.8.0/21	14.49.8.0–14.49.15.255	2,048
14.49.15.0/24	14.49.15.0–14.49.15.255	256
14.49.16.0/21	14.49.16.0–14.49.23.255	2,048
14.49.16.0/24	14.49.16.0–14.49.16.255	256
14.49.48.0/21	14.49.48.0–14.49.55.255	2,048
14.55.178.0/24	14.55.178.0–14.55.178.255	256
14.56.0.0/13	14.56.0.0–14.63.255.255	524,288
14.63.128.0/24	14.63.128.0–14.63.128.255	256
14.63.132.0/22	14.63.132.0–14.63.135.255	1,024
14.63.136.0/22	14.63.136.0–14.63.139.255	1,024
14.63.143.0/24	14.63.143.0–14.63.143.255	256
14.63.144.0/20	14.63.144.0–14.63.159.255	4,096
14.63.235.0/24	14.63.235.0–14.63.235.255	256
14.63.236.0/22	14.63.236.0–14.63.239.255	1,024
14.63.248.0/23	14.63.248.0–14.63.249.255	512
14.64.0.0/12	14.64.0.0–14.79.255.255	1,048,576
14.80.0.0/12	14.80.0.0–14.95.255.255	1,048,576
14.128.128.0/23	14.128.128.0–14.128.129.255	512
14.128.130.0/23	14.128.130.0–14.128.131.255	512
14.128.132.0/23	14.128.132.0–14.128.133.255	512
14.128.134.0/23	14.128.134.0–14.128.135.255	512
14.128.136.0/22	14.128.136.0–14.128.139.255	1,024
14.128.140.0/22	14.128.140.0–14.128.143.255	1,024
14.128.144.0/22	14.128.144.0–14.128.147.255	1,024
14.128.148.0/22	14.128.148.0–14.128.151.255	1,024
14.128.152.0/22	14.128.152.0–14.128.155.255	1,024
14.128.156.0/22	14.128.156.0–14.128.159.255	1,024
14.128.160.0/22	14.128.160.0–14.128.163.255	1,024
14.128.160.0/24	14.128.160.0–14.128.160.255	256
14.128.161.0/24	14.128.161.0–14.128.161.255	256
14.128.162.0/24	14.128.162.0–14.128.162.255	256
14.128.163.0/24	14.128.163.0–14.128.163.255	256
14.128.164.0/22	14.128.164.0–14.128.167.255	1,024
14.128.168.0/22	14.128.168.0–14.128.171.255	1,024
14.128.172.0/22	14.128.172.0–14.128.175.255	1,024
16.216.128.0/23	16.216.128.0–16.216.129.255	512
23.26.110.0/24	23.26.110.0–23.26.110.255	256
23.26.120.0/24	23.26.120.0–23.26.120.255	256
23.26.138.0/24	23.26.138.0–23.26.138.255	256
23.26.147.0/24	23.26.147.0–23.26.147.255	256
23.26.158.0/23	23.26.158.0–23.26.159.255	512
23.90.6.0/23	23.90.6.0–23.90.7.255	512
23.133.132.0/24	23.133.132.0–23.133.132.255	256
23.133.148.0/24	23.133.148.0–23.133.148.255	256
23.133.244.0/24	23.133.244.0–23.133.244.255	256
23.134.4.0/24	23.134.4.0–23.134.4.255	256
23.134.220.0/24	23.134.220.0–23.134.220.255	256
27.96.136.0/21	27.96.136.0–27.96.143.255	2,048
27.232.0.0/14	27.232.0.0–27.235.255.255	262,144
27.236.0.0/14	27.236.0.0–27.239.255.255	262,144
27.255.64.0/24	27.255.64.0–27.255.64.255	256
31.56.172.0/24	31.56.172.0–31.56.172.255	256
31.56.173.0/24	31.56.173.0–31.56.173.255	256
31.56.242.0/24	31.56.242.0–31.56.242.255	256
31.56.243.0/24	31.56.243.0–31.56.243.255	256
31.56.244.0/24	31.56.244.0–31.56.244.255	256
31.56.245.0/24	31.56.245.0–31.56.245.255	256
31.77.176.0/23	31.77.176.0–31.77.177.255	512
39.4.0.0/14	39.4.0.0–39.7.255.255	262,144
39.16.0.0/13	39.16.0.0–39.23.255.255	524,288
39.24.0.0/13	39.24.0.0–39.31.255.255	524,288
43.228.160.0/23	43.228.160.0–43.228.161.255	512
43.228.162.0/23	43.228.162.0–43.228.163.255	512
43.228.162.0/24	43.228.162.0–43.228.162.255	256
43.230.76.0/23	43.230.76.0–43.230.77.255	512
43.230.78.0/24	43.230.78.0–43.230.78.255	256
43.230.79.0/24	43.230.79.0–43.230.79.255	256
43.246.152.0/24	43.246.152.0–43.246.152.255	256
43.246.153.0/24	43.246.153.0–43.246.153.255	256
43.246.154.0/24	43.246.154.0–43.246.154.255	256
43.246.155.0/24	43.246.155.0–43.246.155.255	256
45.64.172.0/22	45.64.172.0–45.64.175.255	1,024
45.92.104.0/22	45.92.104.0–45.92.107.255	1,024
45.117.14.0/24	45.117.14.0–45.117.14.255	256
45.249.64.0/22	45.249.64.0–45.249.67.255	1,024
49.16.0.0/14	49.16.0.0–49.19.255.255	262,144
49.20.0.0/15	49.20.0.0–49.21.255.255	131,072
49.22.0.0/15	49.22.0.0–49.23.255.255	131,072
49.24.0.0/13	49.24.0.0–49.31.255.255	524,288
49.50.156.0/22	49.50.156.0–49.50.159.255	1,024
49.56.0.0/13	49.56.0.0–49.63.255.255	524,288
49.143.192.0/20	49.143.192.0–49.143.207.255	4,096
49.254.0.0/17	49.254.0.0–49.254.127.255	32,768
49.254.128.0/17	49.254.128.0–49.254.255.255	32,768
49.254.166.0/24	49.254.166.0–49.254.166.255	256
50.2.96.0/23	50.2.96.0–50.2.97.255	512
51.194.152.0/24	51.194.152.0–51.194.152.255	256
51.241.138.0/23	51.241.138.0–51.241.139.255	512
51.241.199.0/24	51.241.199.0–51.241.199.255	256
58.29.196.0/24	58.29.196.0–58.29.196.255	256
59.0.0.0/11	59.0.0.0–59.31.255.255	2,097,152
59.0.0.0/12	59.0.0.0–59.15.255.255	1,048,576
59.0.0.0/13	59.0.0.0–59.7.255.255	524,288
59.0.113.0/24	59.0.113.0–59.0.113.255	256
59.0.144.0/24	59.0.144.0–59.0.144.255	256
59.0.170.0/24	59.0.170.0–59.0.170.255	256
59.0.171.0/24	59.0.171.0–59.0.171.255	256
59.0.172.0/24	59.0.172.0–59.0.172.255	256
59.0.173.0/24	59.0.173.0–59.0.173.255	256
59.0.174.0/24	59.0.174.0–59.0.174.255	256
59.0.175.0/24	59.0.175.0–59.0.175.255	256
59.0.176.0/24	59.0.176.0–59.0.176.255	256
59.0.177.0/24	59.0.177.0–59.0.177.255	256
59.2.109.0/24	59.2.109.0–59.2.109.255	256
59.4.89.0/24	59.4.89.0–59.4.89.255	256
59.4.90.0/24	59.4.90.0–59.4.90.255	256
59.4.91.0/24	59.4.91.0–59.4.91.255	256
59.4.92.0/24	59.4.92.0–59.4.92.255	256
59.4.93.0/24	59.4.93.0–59.4.93.255	256
59.4.94.0/24	59.4.94.0–59.4.94.255	256
59.4.95.0/24	59.4.95.0–59.4.95.255	256
59.4.96.0/24	59.4.96.0–59.4.96.255	256
59.4.97.0/24	59.4.97.0–59.4.97.255	256
59.4.98.0/24	59.4.98.0–59.4.98.255	256
59.8.0.0/13	59.8.0.0–59.15.255.255	524,288
59.8.186.0/24	59.8.186.0–59.8.186.255	256
59.8.187.0/24	59.8.187.0–59.8.187.255	256
59.8.188.0/24	59.8.188.0–59.8.188.255	256
59.8.189.0/24	59.8.189.0–59.8.189.255	256
59.8.190.0/24	59.8.190.0–59.8.190.255	256
59.11.56.0/23	59.11.56.0–59.11.57.255	512
59.11.69.0/24	59.11.69.0–59.11.69.255	256
59.11.228.0/24	59.11.228.0–59.11.228.255	256
59.11.229.0/24	59.11.229.0–59.11.229.255	256
59.12.136.0/24	59.12.136.0–59.12.136.255	256
59.12.137.0/24	59.12.137.0–59.12.137.255	256
59.12.138.0/24	59.12.138.0–59.12.138.255	256
59.12.139.0/24	59.12.139.0–59.12.139.255	256
59.12.182.0/24	59.12.182.0–59.12.182.255	256
59.12.188.0/24	59.12.188.0–59.12.188.255	256
59.13.50.0/23	59.13.50.0–59.13.51.255	512
59.13.159.0/24	59.13.159.0–59.13.159.255	256
59.13.162.0/24	59.13.162.0–59.13.162.255	256
59.16.0.0/12	59.16.0.0–59.31.255.255	1,048,576
59.16.0.0/13	59.16.0.0–59.23.255.255	524,288
59.16.50.0/24	59.16.50.0–59.16.50.255	256
59.18.64.0/19	59.18.64.0–59.18.95.255	8,192
59.18.87.0/24	59.18.87.0–59.18.87.255	256
59.18.96.0/19	59.18.96.0–59.18.127.255	8,192
59.24.0.0/13	59.24.0.0–59.31.255.255	524,288
61.36.233.0/24	61.36.233.0–61.36.233.255	256
61.36.234.0/24	61.36.234.0–61.36.234.255	256
61.36.235.0/24	61.36.235.0–61.36.235.255	256
61.36.236.0/24	61.36.236.0–61.36.236.255	256
61.72.0.0/13	61.72.0.0–61.79.255.255	524,288
61.72.179.0/24	61.72.179.0–61.72.179.255	256
61.72.180.0/22	61.72.180.0–61.72.183.255	1,024
61.77.180.0/23	61.77.180.0–61.77.181.255	512
61.78.113.0/24	61.78.113.0–61.78.113.255	256
61.78.114.0/24	61.78.114.0–61.78.114.255	256
61.78.115.0/24	61.78.115.0–61.78.115.255	256
61.80.0.0/14	61.80.0.0–61.83.255.255	262,144
61.80.34.0/24	61.80.34.0–61.80.34.255	256
61.80.45.0/24	61.80.45.0–61.80.45.255	256
61.80.49.0/24	61.80.49.0–61.80.49.255	256
61.80.132.0/24	61.80.132.0–61.80.132.255	256
61.80.133.0/24	61.80.133.0–61.80.133.255	256
61.81.224.0/19	61.81.224.0–61.81.255.255	8,192
61.82.91.0/24	61.82.91.0–61.82.91.255	256
61.83.128.0/24	61.83.128.0–61.83.128.255	256
61.83.129.0/24	61.83.129.0–61.83.129.255	256
61.83.130.0/24	61.83.130.0–61.83.130.255	256
61.83.131.0/24	61.83.131.0–61.83.131.255	256
61.83.223.0/24	61.83.223.0–61.83.223.255	256
61.83.233.0/24	61.83.233.0–61.83.233.255	256
61.84.0.0/15	61.84.0.0–61.85.255.255	131,072
61.84.121.0/24	61.84.121.0–61.84.121.255	256
61.85.24.0/23	61.85.24.0–61.85.25.255	512
61.85.26.0/24	61.85.26.0–61.85.26.255	256
61.96.50.0/24	61.96.50.0–61.96.50.255	256
61.96.51.0/24	61.96.51.0–61.96.51.255	256
61.97.160.0/21	61.97.160.0–61.97.167.255	2,048
61.97.170.0/23	61.97.170.0–61.97.171.255	512
61.97.174.0/23	61.97.174.0–61.97.175.255	512
61.106.128.0/18	61.106.128.0–61.106.191.255	16,384
61.106.128.0/24	61.106.128.0–61.106.128.255	256
61.106.140.0/24	61.106.140.0–61.106.140.255	256
61.106.146.0/24	61.106.146.0–61.106.146.255	256
61.106.162.0/24	61.106.162.0–61.106.162.255	256
61.106.174.0/24	61.106.174.0–61.106.174.255	256
61.106.176.0/24	61.106.176.0–61.106.176.255	256
61.106.177.0/24	61.106.177.0–61.106.177.255	256
61.106.178.0/24	61.106.178.0–61.106.178.255	256
61.106.179.0/24	61.106.179.0–61.106.179.255	256
61.106.180.0/24	61.106.180.0–61.106.180.255	256
61.106.181.0/24	61.106.181.0–61.106.181.255	256
61.106.182.0/24	61.106.182.0–61.106.182.255	256
61.106.183.0/24	61.106.183.0–61.106.183.255	256
61.106.184.0/24	61.106.184.0–61.106.184.255	256
61.106.185.0/24	61.106.185.0–61.106.185.255	256
61.106.186.0/24	61.106.186.0–61.106.186.255	256
61.106.187.0/24	61.106.187.0–61.106.187.255	256
61.106.188.0/24	61.106.188.0–61.106.188.255	256
61.106.191.0/24	61.106.191.0–61.106.191.255	256
61.108.37.0/24	61.108.37.0–61.108.37.255	256
61.251.64.0/20	61.251.64.0–61.251.79.255	4,096
61.251.65.0/24	61.251.65.0–61.251.65.255	256
61.251.66.0/24	61.251.66.0–61.251.66.255	256
61.251.67.0/24	61.251.67.0–61.251.67.255	256
61.251.68.0/24	61.251.68.0–61.251.68.255	256
61.251.69.0/24	61.251.69.0–61.251.69.255	256
61.251.70.0/24	61.251.70.0–61.251.70.255	256
61.251.71.0/24	61.251.71.0–61.251.71.255	256
61.251.72.0/24	61.251.72.0–61.251.72.255	256
61.251.73.0/24	61.251.73.0–61.251.73.255	256
61.251.74.0/24	61.251.74.0–61.251.74.255	256
61.251.75.0/24	61.251.75.0–61.251.75.255	256
61.251.76.0/24	61.251.76.0–61.251.76.255	256
61.251.77.0/24	61.251.77.0–61.251.77.255	256
61.251.78.0/24	61.251.78.0–61.251.78.255	256
61.251.188.0/24	61.251.188.0–61.251.188.255	256
61.252.32.0/20	61.252.32.0–61.252.47.255	4,096
64.81.172.0/23	64.81.172.0–64.81.173.255	512
67.220.69.0/24	67.220.69.0–67.220.69.255	256
68.167.128.0/23	68.167.128.0–68.167.129.255	512
71.19.135.0/24	71.19.135.0–71.19.135.255	256
74.124.196.0/24	74.124.196.0–74.124.196.255	256
79.176.184.0/21	79.176.184.0–79.176.191.255	2,048
79.180.2.0/23	79.180.2.0–79.180.3.255	512
79.180.34.0/23	79.180.34.0–79.180.35.255	512
79.180.64.0/23	79.180.64.0–79.180.65.255	512
79.180.254.0/23	79.180.254.0–79.180.255.255	512
82.22.240.0/24	82.22.240.0–82.22.240.255	256
82.23.198.0/24	82.23.198.0–82.23.198.255	256
82.23.240.0/24	82.23.240.0–82.23.240.255	256
82.24.209.0/24	82.24.209.0–82.24.209.255	256
82.24.219.0/24	82.24.219.0–82.24.219.255	256
82.24.233.0/24	82.24.233.0–82.24.233.255	256
82.24.240.0/24	82.24.240.0–82.24.240.255	256
82.24.250.0/24	82.24.250.0–82.24.250.255	256
82.25.208.0/24	82.25.208.0–82.25.208.255	256
82.25.211.0/24	82.25.211.0–82.25.211.255	256
84.37.2.0/24	84.37.2.0–84.37.2.255	256
84.37.17.0/24	84.37.17.0–84.37.17.255	256
84.37.23.0/24	84.37.23.0–84.37.23.255	256
85.155.90.0/23	85.155.90.0–85.155.91.255	512
89.30.184.0/23	89.30.184.0–89.30.185.255	512
93.152.68.0/24	93.152.68.0–93.152.68.255	256
93.152.74.0/24	93.152.74.0–93.152.74.255	256
93.152.78.0/24	93.152.78.0–93.152.78.255	256
93.152.82.0/24	93.152.82.0–93.152.82.255	256
93.152.88.0/24	93.152.88.0–93.152.88.255	256
93.152.105.0/24	93.152.105.0–93.152.105.255	256
93.152.108.0/24	93.152.108.0–93.152.108.255	256
93.152.111.0/24	93.152.111.0–93.152.111.255	256
93.152.123.0/24	93.152.123.0–93.152.123.255	256
93.152.126.0/24	93.152.126.0–93.152.126.255	256
94.194.52.0/22	94.194.52.0–94.194.55.255	1,024
94.194.140.0/22	94.194.140.0–94.194.143.255	1,024
94.194.160.0/22	94.194.160.0–94.194.163.255	1,024
94.194.180.0/22	94.194.180.0–94.194.183.255	1,024
94.194.248.0/22	94.194.248.0–94.194.251.255	1,024
95.155.180.0/23	95.155.180.0–95.155.181.255	512
101.53.81.0/24	101.53.81.0–101.53.81.255	256
101.53.88.0/24	101.53.88.0–101.53.88.255	256
101.101.136.0/21	101.101.136.0–101.101.143.255	2,048
101.101.224.0/22	101.101.224.0–101.101.227.255	1,024
101.101.240.0/23	101.101.240.0–101.101.241.255	512
101.101.246.0/23	101.101.246.0–101.101.247.255	512
101.101.248.0/22	101.101.248.0–101.101.251.255	1,024
102.215.229.0/24	102.215.229.0–102.215.229.255	256
103.4.176.0/22	103.4.176.0–103.4.179.255	1,024
103.4.180.0/22	103.4.180.0–103.4.183.255	1,024
103.11.58.0/23	103.11.58.0–103.11.59.255	512
103.43.69.0/24	103.43.69.0–103.43.69.255	256
103.57.60.0/24	103.57.60.0–103.57.60.255	256
103.57.61.0/24	103.57.61.0–103.57.61.255	256
103.127.213.0/24	103.127.213.0–103.127.213.255	256
103.141.191.0/24	103.141.191.0–103.141.191.255	256
103.212.124.0/24	103.212.124.0–103.212.124.255	256
103.212.126.0/24	103.212.126.0–103.212.126.255	256
103.212.127.0/24	103.212.127.0–103.212.127.255	256
103.212.244.0/24	103.212.244.0–103.212.244.255	256
103.212.245.0/24	103.212.245.0–103.212.245.255	256
103.228.96.0/24	103.228.96.0–103.228.96.255	256
103.228.99.0/24	103.228.99.0–103.228.99.255	256
103.247.232.0/23	103.247.232.0–103.247.233.255	512
103.251.104.0/22	103.251.104.0–103.251.107.255	1,024
104.140.8.0/23	104.140.8.0–104.140.9.255	512
104.253.103.0/24	104.253.103.0–104.253.103.255	256
104.253.127.0/24	104.253.127.0–104.253.127.255	256
109.66.90.0/23	109.66.90.0–109.66.91.255	512
109.66.168.0/21	109.66.168.0–109.66.175.255	2,048
109.66.234.0/23	109.66.234.0–109.66.235.255	512
109.66.246.0/23	109.66.246.0–109.66.247.255	512
109.174.236.0/22	109.174.236.0–109.174.239.255	1,024
110.68.0.0/16	110.68.0.0–110.68.255.255	65,536
110.69.0.0/16	110.69.0.0–110.69.255.255	65,536
110.70.0.0/15	110.70.0.0–110.71.255.255	131,072
110.92.20.0/24	110.92.20.0–110.92.20.255	256
110.92.21.0/24	110.92.21.0–110.92.21.255	256
110.92.22.0/24	110.92.22.0–110.92.22.255	256
110.93.120.0/22	110.93.120.0–110.93.123.255	1,024
110.93.124.0/22	110.93.124.0–110.93.127.255	1,024
111.92.188.0/24	111.92.188.0–111.92.188.255	256
111.92.189.0/24	111.92.189.0–111.92.189.255	256
111.92.191.0/24	111.92.191.0–111.92.191.255	256
112.160.0.0/12	112.160.0.0–112.175.255.255	1,048,576
112.160.0.0/13	112.160.0.0–112.167.255.255	524,288
112.161.25.0/24	112.161.25.0–112.161.25.255	256
112.168.0.0/13	112.168.0.0–112.175.255.255	524,288
112.173.240.0/21	112.173.240.0–112.173.247.255	2,048
112.176.0.0/12	112.176.0.0–112.191.255.255	1,048,576
112.187.203.0/24	112.187.203.0–112.187.203.255	256
113.198.0.0/20	113.198.0.0–113.198.15.255	4,096
113.198.16.0/21	113.198.16.0–113.198.23.255	2,048
113.198.24.0/22	113.198.24.0–113.198.27.255	1,024
113.198.28.0/23	113.198.28.0–113.198.29.255	512
113.198.92.0/24	113.198.92.0–113.198.92.255	256
113.198.93.0/24	113.198.93.0–113.198.93.255	256
113.198.181.0/24	113.198.181.0–113.198.181.255	256
113.198.182.0/24	113.198.182.0–113.198.182.255	256
113.198.183.0/24	113.198.183.0–113.198.183.255	256
113.198.195.0/24	113.198.195.0–113.198.195.255	256
114.70.27.0/24	114.70.27.0–114.70.27.255	256
114.70.28.0/24	114.70.28.0–114.70.28.255	256
114.70.29.0/24	114.70.29.0–114.70.29.255	256
114.70.30.0/24	114.70.30.0–114.70.30.255	256
114.70.31.0/24	114.70.31.0–114.70.31.255	256
114.70.32.0/24	114.70.32.0–114.70.32.255	256
114.70.33.0/24	114.70.33.0–114.70.33.255	256
114.70.41.0/24	114.70.41.0–114.70.41.255	256
114.70.60.0/24	114.70.60.0–114.70.60.255	256
114.70.80.0/24	114.70.80.0–114.70.80.255	256
114.70.81.0/24	114.70.81.0–114.70.81.255	256
114.70.129.0/24	114.70.129.0–114.70.129.255	256
114.70.130.0/24	114.70.130.0–114.70.130.255	256
114.70.131.0/24	114.70.131.0–114.70.131.255	256
114.70.137.0/24	114.70.137.0–114.70.137.255	256
114.70.139.0/24	114.70.139.0–114.70.139.255	256
114.70.144.0/22	114.70.144.0–114.70.147.255	1,024
114.70.150.0/24	114.70.150.0–114.70.150.255	256
114.70.160.0/24	114.70.160.0–114.70.160.255	256
114.70.161.0/24	114.70.161.0–114.70.161.255	256
114.70.162.0/24	114.70.162.0–114.70.162.255	256
114.70.174.0/23	114.70.174.0–114.70.175.255	512
114.70.176.0/23	114.70.176.0–114.70.177.255	512
114.70.178.0/24	114.70.178.0–114.70.178.255	256
114.70.207.0/24	114.70.207.0–114.70.207.255	256
114.70.211.0/24	114.70.211.0–114.70.211.255	256
114.70.212.0/24	114.70.212.0–114.70.212.255	256
114.70.214.0/24	114.70.214.0–114.70.214.255	256
114.70.220.0/24	114.70.220.0–114.70.220.255	256
114.70.221.0/24	114.70.221.0–114.70.221.255	256
114.70.222.0/24	114.70.222.0–114.70.222.255	256
114.70.223.0/24	114.70.223.0–114.70.223.255	256
114.70.244.0/22	114.70.244.0–114.70.247.255	1,024
114.70.248.0/21	114.70.248.0–114.70.255.255	2,048
114.71.13.0/24	114.71.13.0–114.71.13.255	256
114.71.14.0/23	114.71.14.0–114.71.15.255	512
114.71.16.0/23	114.71.16.0–114.71.17.255	512
114.71.18.0/24	114.71.18.0–114.71.18.255	256
114.71.52.0/22	114.71.52.0–114.71.55.255	1,024
114.71.56.0/23	114.71.56.0–114.71.57.255	512
114.71.83.0/24	114.71.83.0–114.71.83.255	256
114.71.84.0/22	114.71.84.0–114.71.87.255	1,024
114.71.128.0/24	114.71.128.0–114.71.128.255	256
114.71.129.0/24	114.71.129.0–114.71.129.255	256
114.71.130.0/24	114.71.130.0–114.71.130.255	256
114.71.131.0/24	114.71.131.0–114.71.131.255	256
114.71.132.0/24	114.71.132.0–114.71.132.255	256
114.71.133.0/24	114.71.133.0–114.71.133.255	256
114.71.134.0/24	114.71.134.0–114.71.134.255	256
114.71.135.0/24	114.71.135.0–114.71.135.255	256
114.71.136.0/24	114.71.136.0–114.71.136.255	256
114.71.137.0/24	114.71.137.0–114.71.137.255	256
114.71.138.0/24	114.71.138.0–114.71.138.255	256
114.71.139.0/24	114.71.139.0–114.71.139.255	256
114.71.140.0/24	114.71.140.0–114.71.140.255	256
114.71.141.0/24	114.71.141.0–114.71.141.255	256
114.71.142.0/24	114.71.142.0–114.71.142.255	256
114.71.143.0/24	114.71.143.0–114.71.143.255	256
114.71.144.0/24	114.71.144.0–114.71.144.255	256
114.71.145.0/24	114.71.145.0–114.71.145.255	256
114.71.146.0/24	114.71.146.0–114.71.146.255	256
114.71.147.0/24	114.71.147.0–114.71.147.255	256
114.71.148.0/24	114.71.148.0–114.71.148.255	256
114.71.150.0/24	114.71.150.0–114.71.150.255	256
114.71.152.0/24	114.71.152.0–114.71.152.255	256
114.71.154.0/24	114.71.154.0–114.71.154.255	256
114.71.236.0/24	114.71.236.0–114.71.236.255	256
114.71.237.0/24	114.71.237.0–114.71.237.255	256
114.71.238.0/24	114.71.238.0–114.71.238.255	256
114.71.246.0/23	114.71.246.0–114.71.247.255	512
114.71.248.0/24	114.71.248.0–114.71.248.255	256
114.71.249.0/24	114.71.249.0–114.71.249.255	256
115.0.0.0/12	115.0.0.0–115.15.255.255	1,048,576
115.16.0.0/13	115.16.0.0–115.23.255.255	524,288
115.20.0.0/17	115.20.0.0–115.20.127.255	32,768
115.22.65.0/24	115.22.65.0–115.22.65.255	256
115.85.160.0/21	115.85.160.0–115.85.167.255	2,048
115.85.168.0/21	115.85.168.0–115.85.175.255	2,048
115.144.0.0/18	115.144.0.0–115.144.63.255	16,384
115.144.28.0/24	115.144.28.0–115.144.28.255	256
115.144.64.0/22	115.144.64.0–115.144.67.255	1,024
115.144.68.0/24	115.144.68.0–115.144.68.255	256
115.144.69.0/24	115.144.69.0–115.144.69.255	256
115.144.70.0/23	115.144.70.0–115.144.71.255	512
115.144.72.0/21	115.144.72.0–115.144.79.255	2,048
115.144.80.0/20	115.144.80.0–115.144.95.255	4,096
115.144.96.0/21	115.144.96.0–115.144.103.255	2,048
115.144.104.0/23	115.144.104.0–115.144.105.255	512
115.144.106.0/24	115.144.106.0–115.144.106.255	256
115.144.107.0/24	115.144.107.0–115.144.107.255	256
115.144.108.0/22	115.144.108.0–115.144.111.255	1,024
115.144.112.0/21	115.144.112.0–115.144.119.255	2,048
115.144.120.0/23	115.144.120.0–115.144.121.255	512
115.144.122.0/24	115.144.122.0–115.144.122.255	256
115.144.123.0/24	115.144.123.0–115.144.123.255	256
115.144.124.0/22	115.144.124.0–115.144.127.255	1,024
115.144.128.0/19	115.144.128.0–115.144.159.255	8,192
115.144.160.0/22	115.144.160.0–115.144.163.255	1,024
115.144.164.0/23	115.144.164.0–115.144.165.255	512
115.144.166.0/24	115.144.166.0–115.144.166.255	256
115.144.167.0/24	115.144.167.0–115.144.167.255	256
115.144.168.0/21	115.144.168.0–115.144.175.255	2,048
115.144.176.0/23	115.144.176.0–115.144.177.255	512
115.144.178.0/24	115.144.178.0–115.144.178.255	256
115.144.179.0/24	115.144.179.0–115.144.179.255	256
115.144.181.0/24	115.144.181.0–115.144.181.255	256
115.144.182.0/23	115.144.182.0–115.144.183.255	512
115.144.184.0/21	115.144.184.0–115.144.191.255	2,048
115.144.192.0/19	115.144.192.0–115.144.223.255	8,192
115.144.224.0/21	115.144.224.0–115.144.231.255	2,048
115.144.232.0/22	115.144.232.0–115.144.235.255	1,024
115.144.236.0/23	115.144.236.0–115.144.237.255	512
115.144.238.0/24	115.144.238.0–115.144.238.255	256
115.144.239.0/24	115.144.239.0–115.144.239.255	256
115.144.240.0/20	115.144.240.0–115.144.255.255	4,096
116.200.0.0/15	116.200.0.0–116.201.255.255	131,072
117.16.32.0/24	117.16.32.0–117.16.32.255	256
117.16.33.0/24	117.16.33.0–117.16.33.255	256
117.16.34.0/24	117.16.34.0–117.16.34.255	256
117.16.35.0/24	117.16.35.0–117.16.35.255	256
117.16.38.0/24	117.16.38.0–117.16.38.255	256
117.16.39.0/24	117.16.39.0–117.16.39.255	256
117.16.52.0/23	117.16.52.0–117.16.53.255	512
117.16.60.0/24	117.16.60.0–117.16.60.255	256
117.16.61.0/24	117.16.61.0–117.16.61.255	256
117.16.62.0/24	117.16.62.0–117.16.62.255	256
117.16.63.0/24	117.16.63.0–117.16.63.255	256
117.16.64.0/24	117.16.64.0–117.16.64.255	256
117.16.65.0/24	117.16.65.0–117.16.65.255	256
117.16.66.0/24	117.16.66.0–117.16.66.255	256
117.16.67.0/24	117.16.67.0–117.16.67.255	256
117.16.68.0/24	117.16.68.0–117.16.68.255	256
117.16.69.0/24	117.16.69.0–117.16.69.255	256
117.16.75.0/24	117.16.75.0–117.16.75.255	256
117.16.76.0/24	117.16.76.0–117.16.76.255	256
117.16.80.0/24	117.16.80.0–117.16.80.255	256
117.16.81.0/24	117.16.81.0–117.16.81.255	256
117.16.82.0/24	117.16.82.0–117.16.82.255	256
117.16.83.0/24	117.16.83.0–117.16.83.255	256
117.16.84.0/24	117.16.84.0–117.16.84.255	256
117.16.85.0/24	117.16.85.0–117.16.85.255	256
117.16.90.0/24	117.16.90.0–117.16.90.255	256
117.16.129.0/24	117.16.129.0–117.16.129.255	256
117.16.130.0/23	117.16.130.0–117.16.131.255	512
117.16.132.0/24	117.16.132.0–117.16.132.255	256
117.16.133.0/24	117.16.133.0–117.16.133.255	256
117.16.176.0/24	117.16.176.0–117.16.176.255	256
117.16.177.0/24	117.16.177.0–117.16.177.255	256
117.16.178.0/24	117.16.178.0–117.16.178.255	256
117.16.179.0/24	117.16.179.0–117.16.179.255	256
117.16.180.0/24	117.16.180.0–117.16.180.255	256
117.16.181.0/24	117.16.181.0–117.16.181.255	256
117.16.182.0/24	117.16.182.0–117.16.182.255	256
117.16.183.0/24	117.16.183.0–117.16.183.255	256
117.16.184.0/24	117.16.184.0–117.16.184.255	256
117.16.185.0/24	117.16.185.0–117.16.185.255	256
117.16.235.0/24	117.16.235.0–117.16.235.255	256
117.16.236.0/24	117.16.236.0–117.16.236.255	256
117.16.237.0/24	117.16.237.0–117.16.237.255	256

Showing the first 500 of 2,155 ranges. Download the TXT or CSV file for the complete list.

Korea Telecom (KT) IPv6 ranges

IPv6 ranges announced by Korea Telecom (KT): CIDR, start and end IP, address count
CIDR	Start IP – end IP	Addresses
2400:0:611::/48	2400:0:611::–2400:0:611:ffff:ffff:ffff:ffff:ffff	2⁸⁰
2400:0:810::/44	2400:0:810::–2400:0:81f:ffff:ffff:ffff:ffff:ffff	2⁸⁴
2400:0:820::/44	2400:0:820::–2400:0:82f:ffff:ffff:ffff:ffff:ffff	2⁸⁴
2400:0:830::/44	2400:0:830::–2400:0:83f:ffff:ffff:ffff:ffff:ffff	2⁸⁴
2400:0:840::/44	2400:0:840::–2400:0:84f:ffff:ffff:ffff:ffff:ffff	2⁸⁴
2400:0:850::/44	2400:0:850::–2400:0:85f:ffff:ffff:ffff:ffff:ffff	2⁸⁴
2400:0:860::/44	2400:0:860::–2400:0:86f:ffff:ffff:ffff:ffff:ffff	2⁸⁴
2400:0:870::/44	2400:0:870::–2400:0:87f:ffff:ffff:ffff:ffff:ffff	2⁸⁴
2400:12::/48	2400:12::–2400:12:0:ffff:ffff:ffff:ffff:ffff	2⁸⁰
2400:32::/48	2400:32::–2400:32:0:ffff:ffff:ffff:ffff:ffff	2⁸⁰
2400:e1::/32	2400:e1::–2400:e1:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:e2::/32	2400:e2::–2400:e2:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:f1::/32	2400:f1::–2400:f1:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:f2::/32	2400:f2::–2400:f2:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:f3::/32	2400:f3::–2400:f3:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:f4::/32	2400:f4::–2400:f4:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:f5::/32	2400:f5::–2400:f5:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:f6::/32	2400:f6::–2400:f6:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:f7::/32	2400:f7::–2400:f7:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:100::/32	2400:100::–2400:100:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:101::/32	2400:101::–2400:101:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:102::/32	2400:102::–2400:102:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:103::/32	2400:103::–2400:103:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:103:c009::/48	2400:103:c009::–2400:103:c009:ffff:ffff:ffff:ffff:ffff	2⁸⁰
2400:104::/30	2400:104::–2400:107:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁸
2400:108::/32	2400:108::–2400:108:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:109::/32	2400:109::–2400:109:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:10a::/32	2400:10a::–2400:10a:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:10b::/32	2400:10b::–2400:10b:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:110::/32	2400:110::–2400:110:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:111::/32	2400:111::–2400:111:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:112::/32	2400:112::–2400:112:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:120::/31	2400:120::–2400:121:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁷
2400:122::/31	2400:122::–2400:123:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁷
2400:124::/31	2400:124::–2400:125:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁷
2400:126::/32	2400:126::–2400:126:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:130::/30	2400:130::–2400:133:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁸
2400:130:c009::/48	2400:130:c009::–2400:130:c009:ffff:ffff:ffff:ffff:ffff	2⁸⁰
2400:134::/32	2400:134::–2400:134:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:140::/30	2400:140::–2400:143:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁸
2400:140:c009::/48	2400:140:c009::–2400:140:c009:ffff:ffff:ffff:ffff:ffff	2⁸⁰
2400:144::/30	2400:144::–2400:147:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁸
2400:144:c009::/48	2400:144:c009::–2400:144:c009:ffff:ffff:ffff:ffff:ffff	2⁸⁰
2400:148::/32	2400:148::–2400:148:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:150::/30	2400:150::–2400:153:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁸
2400:150:c009::/48	2400:150:c009::–2400:150:c009:ffff:ffff:ffff:ffff:ffff	2⁸⁰
2400:154::/31	2400:154::–2400:155:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁷
2400:156::/32	2400:156::–2400:156:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁶
2400:156:c009::/48	2400:156:c009::–2400:156:c009:ffff:ffff:ffff:ffff:ffff	2⁸⁰
2400:160::/30	2400:160::–2400:163:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁸
2400:160:c009::/48	2400:160:c009::–2400:160:c009:ffff:ffff:ffff:ffff:ffff	2⁸⁰
2400:164::/31	2400:164::–2400:165:ffff:ffff:ffff:ffff:ffff:ffff	2⁹⁷
2400:221:3002::/48	2400:221:3002::–2400:221:3002:ffff:ffff:ffff:ffff:ffff	2⁸⁰

All 53 ranges are listed.

About the Korea Telecom (KT) IP range data

ASNs and holders
Korea Telecom (KT) announces its prefixes from AS4766. Holders in the registry: AS4766 (KIXS-AS-KR-KR - Korea Telecom).
What the list contains
The ranges are the prefixes these ASNs announce in the public BGP routing table (obtained through RIPEstat), with adjacent blocks left unmerged. This is not an ownership record: it can include prefixes of customers and leased address space, and it can miss routes that very few peers see. Snapshot of 2026-11-02.
Typical uses
Allow or block traffic from Korea Telecom (KT) in a firewall, WAF or nginx, label source IPs in your logs by network, or test with a CIDR match whether an IP belongs to Korea Telecom (KT). Remember that cloud and carrier address space also runs the services of customers, so blocking a whole network can hit unrelated sites.

How to use the Korea Telecom (KT) IP list

Start with the tables above: one for IPv4 and one for IPv6, each row with CIDR, start IP – end IP and address count.
Choose Download TXT or Download CSV for the complete list. The file has all 2,208 ranges, not only the first rows shown on the page.
Import the TXT as one address set into your firewall, router or ipset, or paste the CIDRs into a cloud security group rule.
Check the snapshot date (2026-11-02) before using it in production. Cloud ranges change often, so compare with the official range file published by the provider.

Korea Telecom (KT) IP ranges: frequently asked questions

How many IP ranges does Korea Telecom (KT) have?

As of 2026-11-02, Korea Telecom (KT) announces 2,155 IPv4 prefixes covering 47,219,200 addresses and 53 IPv6 prefixes in the public BGP routing table, through AS4766.

What is the ASN of Korea Telecom (KT)?

Korea Telecom (KT) uses AS4766. Holders in the registry: AS4766 (KIXS-AS-KR-KR - Korea Telecom). Large organisations often run several ASNs, and this page merges the ones listed here.

How do I use the Korea Telecom (KT) IP list for a firewall allowlist or blocklist?

Download the TXT file (one CIDR per line) and import it into ipset, nftables, an nginx allow or deny include, a router address list or a cloud security group. Import the 2,208 ranges as one address set rather than as separate rules. The address space of Korea Telecom (KT) also hosts the services of its customers, so blocking all of it can cut off unrelated sites.

How often is the Korea Telecom (KT) IP list updated?

The list is a snapshot of 2026-11-02, regenerated about once a week from public BGP data (RIPEstat). Announcements change every day, so download it again before using it in production, and for cloud providers also compare it with the official range file they publish.

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