AS1237 Asia Pacific Network Information Centre

General Info - AS1237

Asia Pacific Network Information Centre

Korea (Republic of)

apnic.net

286,704

9,223,372,036,854,775,808

IP Address Ranges

Netblock Number of IPs   
134.75.0.0/24 256
134.75.2.0/23 512
134.75.4.0/22 1,024
134.75.8.0/22 1,024
134.75.12.0/23 512
134.75.14.0/24 256
134.75.17.0/24 256
134.75.18.0/23 512
134.75.20.0/22 1,024
134.75.24.0/21 2,048
134.75.32.0/20 4,096
134.75.48.0/22 1,024
134.75.52.0/23 512
134.75.54.0/24 256
134.75.56.0/21 2,048
134.75.64.0/19 8,192
134.75.96.0/22 1,024
134.75.100.0/24 256
134.75.104.0/24 256
134.75.106.0/24 256
134.75.109.0/24 256
134.75.110.0/23 512
134.75.112.0/21 2,048
134.75.120.0/23 512
134.75.133.0/24 256
134.75.134.0/23 512
134.75.136.0/21 2,048
134.75.144.0/22 1,024
134.75.148.0/23 512
134.75.150.0/24 256
134.75.152.0/21 2,048
134.75.160.0/19 8,192
134.75.192.0/22 1,024
134.75.196.0/24 256
134.75.198.0/23 512
134.75.201.0/24 256
134.75.202.0/24 256
134.75.203.0/28 16
134.75.203.20/30 4
134.75.203.24/29 8
134.75.203.36/30 4
134.75.203.40/29 8
134.75.203.48/28 16
134.75.203.64/26 64
134.75.203.128/26 64
134.75.203.192/27 32
134.75.203.224/28 16
134.75.203.244/30 4
134.75.203.248/29 8
134.75.204.0/23 512
134.75.206.0/24 256
134.75.208.0/21 2,048
134.75.216.0/24 256
134.75.218.0/23 512
134.75.220.0/22 1,024
134.75.224.0/23 512
134.75.227.0/24 256
134.75.228.0/22 1,024
134.75.232.0/21 2,048
134.75.240.0/21 2,048
134.75.248.0/22 1,024
134.75.252.0/24 256
134.75.255.0/24 256
147.47.120.0/21 2,048
150.183.0.0/16 65,536
202.30.40.0/22 1,024
202.30.60.0/22 1,024
202.31.182.0/24 256
203.230.6.0/24 256
203.230.8.0/22 1,024
203.230.16.0/23 512
203.230.22.0/23 512
203.230.24.0/21 2,048
203.230.60.0/22 1,024
203.230.64.0/20 4,096
203.230.108.0/22 1,024
203.230.116.0/23 512
203.230.120.0/24 256
203.230.126.0/24 256
203.233.156.0/24 256
203.241.40.0/21 2,048
203.241.116.0/23 512
203.241.118.0/24 256
203.241.120.0/22 1,024
203.241.164.0/23 512
203.241.170.0/23 512
203.241.172.0/23 512
203.241.174.0/24 256
203.247.64.0/24 256
203.247.69.0/24 256
203.247.73.0/24 256
203.247.160.0/22 1,024
203.247.164.0/23 512
203.247.167.0/27 32
203.247.167.32/29 8
203.247.167.44/30 4
203.247.167.48/28 16
203.247.167.64/26 64
203.247.167.128/25 128
203.247.170.0/23 512
203.247.172.0/22 1,024
203.247.176.0/22 1,024
203.247.180.0/23 512
203.247.184.0/23 512
203.247.188.0/24 256
203.247.190.0/23 512
203.247.192.0/20 4,096
203.247.216.0/22 1,024
203.250.0.0/19 8,192
203.250.96.0/21 2,048
203.250.112.0/21 2,048
203.250.155.0/24 256
203.250.156.0/22 1,024
203.250.160.0/21 2,048
203.250.172.0/22 1,024
203.250.176.0/21 2,048
203.250.192.0/18 16,384
203.253.96.0/20 4,096
203.253.135.0/24 256
203.253.136.0/21 2,048
203.253.224.0/23 512
203.253.230.0/23 512
203.253.234.0/23 512
203.253.236.0/24 256
203.253.238.0/24 256
203.254.40.0/24 256
203.254.168.0/23 512
203.254.176.0/20 4,096
210.98.5.0/24 256
210.98.6.0/23 512
210.98.8.0/22 1,024
210.98.12.0/24 256
210.98.14.0/23 512
210.98.24.0/23 512
210.98.26.0/24 256
210.98.28.0/22 1,024
210.98.44.0/24 256
210.98.47.0/24 256
210.98.48.0/21 2,048
210.98.56.0/24 256
210.98.59.0/24 256
210.98.60.0/22 1,024
210.107.144.0/24 256
210.107.146.0/24 256
210.107.152.0/21 2,048
210.107.160.0/20 4,096
210.107.248.0/22 1,024
210.107.252.0/23 512
210.107.254.0/24 256
210.110.128.0/21 2,048
210.110.144.0/20 4,096
210.110.182.0/23 512
210.110.184.0/24 256
210.110.189.0/24 256
210.110.190.0/23 512
210.110.192.0/22 1,024
210.110.196.0/23 512
210.110.198.0/24 256
210.110.205.0/24 256
210.110.206.0/23 512
210.110.224.0/21 2,048
210.110.232.0/24 256
210.110.235.0/24 256
210.110.236.0/22 1,024
210.110.254.0/23 512
210.114.108.0/24 256
210.117.192.0/23 512
210.117.194.0/24 256
210.117.198.0/24 256
210.117.208.0/22 1,024
210.117.212.0/24 256
210.117.214.0/23 512
210.117.216.0/23 512
210.117.218.0/24 256
210.117.224.0/22 1,024
210.117.228.0/23 512
210.117.230.0/24 256
210.117.236.0/24 256
210.117.240.0/21 2,048
210.117.248.0/22 1,024
210.117.252.0/23 512
210.119.20.0/23 512
210.119.36.0/23 512
210.119.40.0/21 2,048
210.119.48.0/20 4,096
210.119.64.0/19 8,192
210.119.96.0/22 1,024
210.119.100.0/23 512
210.119.114.0/23 512
210.119.122.0/23 512
210.119.124.0/23 512
210.119.126.0/24 256
210.125.0.0/24 256
210.125.32.0/20 4,096
210.125.56.0/21 2,048
210.125.64.0/21 2,048
210.125.84.0/23 512
210.218.192.0/24 256
210.218.201.0/24 256
210.218.202.0/23 512
210.218.204.0/22 1,024
210.218.208.0/21 2,048
210.218.216.0/22 1,024
210.219.32.0/24 256
210.219.34.0/23 512
210.219.36.0/22 1,024
210.219.40.0/23 512
210.219.42.0/24 256
210.219.45.0/24 256
210.219.47.0/24 256
210.219.48.0/22 1,024
210.219.52.0/24 256
210.219.55.0/24 256
210.219.56.0/21 2,048
211.213.190.0/24 256
218.233.7.0/24 256
218.234.156.0/24 256

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Netblock Number of IPs   
2001:320::/39 618,970,019,642,690,137,449,562,112
2001:320:200::/43 38,685,626,227,668,133,590,597,632
2001:320:220::/44 19,342,813,113,834,066,795,298,816
2001:320:230::/46 4,835,703,278,458,516,698,824,704
2001:320:234::/47 2,417,851,639,229,258,349,412,352
2001:320:236::/48 1,208,925,819,614,629,174,706,176
2001:320:238::/45 9,671,406,556,917,033,397,649,408
2001:320:240::/42 77,371,252,455,336,267,181,195,264
2001:320:280::/41 154,742,504,910,672,534,362,390,528
2001:320:300::/40 309,485,009,821,345,068,724,781,056
2001:320:400::/38 1,237,940,039,285,380,274,899,124,224
2001:320:800::/37 2,475,880,078,570,760,549,798,248,448
2001:320:1000::/36 4,951,760,157,141,521,099,596,496,896
2001:320:2000::/35 9,903,520,314,283,042,199,192,993,792
2001:320:4000::/34 19,807,040,628,566,084,398,385,987,584
2001:320:8000::/33 39,614,081,257,132,168,796,771,975,168
2001:3a8::/32 79,228,162,514,264,337,593,543,950,336
2400:1800::/32 79,228,162,514,264,337,593,543,950,336
2400:fd80::/40 309,485,009,821,345,068,724,781,056
2400:fd80:200::/39 618,970,019,642,690,137,449,562,112
2400:fd80:400::/38 1,237,940,039,285,380,274,899,124,224
2400:fd80:800::/37 2,475,880,078,570,760,549,798,248,448
2400:fd80:1000::/36 4,951,760,157,141,521,099,596,496,896
2400:fd80:2000::/35 9,903,520,314,283,042,199,192,993,792
2400:fd80:4000::/34 19,807,040,628,566,084,398,385,987,584
2400:fd80:8000::/33 39,614,081,257,132,168,796,771,975,168
2405:3500::/32 79,228,162,514,264,337,593,543,950,336
2405:4300::/32 79,228,162,514,264,337,593,543,950,336
2405:5f00::/32 79,228,162,514,264,337,593,543,950,336
2405:7b00::/32 79,228,162,514,264,337,593,543,950,336
2405:d880::/32 79,228,162,514,264,337,593,543,950,336
2406:6600::/32 79,228,162,514,264,337,593,543,950,336
2406:ad00::/32 79,228,162,514,264,337,593,543,950,336
2406:d700::/32 79,228,162,514,264,337,593,543,950,336
2407:b00::/32 79,228,162,514,264,337,593,543,950,336

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Downstreams

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What is an Autonomous System (AS)?

An Autonomous System (AS) is a collection of connected networks that operate under a common administrative domain and share routing policies. Each AS is identified by a unique Autonomous System Number (ASN), which is used to exchange routing information with other ASs. AS can control how traffic flows through networks and then filter out unwanted traffic.

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