AS1237 KISTI

KREONET-AS-KR-KR - KISTI · registered in South Korea

IPv4 addresses292,096238 prefixes · 0.009% of announced IPv4

Rank in South Korea#17largest network in KR by IPv4 space, of 853 · 0.27% of KR

Rank worldwide#829of 79,396 networks with IPv4

IPv665,534 x /4824 prefixes

CountrySouth Korea869 ASNs registered there

Open AS1237 in ASN lookup Look up an IP in this network (134.75.0.1) All networks in South Korea

IPv4 prefixes

All 238 prefixes, in address order.

134.75.0.0/24
134.75.2.0/23
134.75.4.0/22
134.75.8.0/22
134.75.12.0/23
134.75.14.0/24
134.75.17.0/24
134.75.18.0/23
134.75.20.0/24
134.75.21.0/24
134.75.22.0/23
134.75.24.0/21
134.75.32.0/20
134.75.48.0/22
134.75.52.0/23
134.75.54.0/24
134.75.56.0/21
134.75.64.0/19
134.75.96.0/22
134.75.100.0/24
134.75.104.0/24
134.75.106.0/24
134.75.109.0/24
134.75.110.0/23
134.75.112.0/21
134.75.120.0/23
134.75.133.0/24
134.75.134.0/23
134.75.136.0/21
134.75.144.0/22
134.75.148.0/23
134.75.150.0/24
134.75.152.0/21
134.75.160.0/19
134.75.192.0/21
134.75.201.0/24
134.75.202.0/23
134.75.204.0/23
134.75.206.0/24
134.75.208.0/21
134.75.216.0/24
134.75.218.0/23
134.75.220.0/22
134.75.224.0/23
134.75.227.0/24
134.75.228.0/22
134.75.232.0/21
134.75.240.0/21
134.75.248.0/23
134.75.250.0/24
134.75.251.0/24
134.75.255.0/24
147.47.120.0/21
150.183.0.0/21
150.183.8.0/22
150.183.12.0/22
150.183.16.0/20
150.183.32.0/19
150.183.64.0/18
150.183.128.0/17
202.30.40.0/22
202.30.60.0/22
202.31.182.0/24
203.230.0.0/24
203.230.2.0/23
203.230.6.0/23
203.230.8.0/22
203.230.16.0/23
203.230.22.0/23
203.230.24.0/21
203.230.60.0/22
203.230.64.0/20
203.230.108.0/22
203.230.116.0/23
203.230.120.0/24
203.230.126.0/24
203.233.155.0/24
203.233.156.0/24
203.241.40.0/21
203.241.116.0/23
203.241.118.0/24
203.241.120.0/22
203.241.164.0/23
203.241.169.0/24
203.241.170.0/23
203.241.172.0/23
203.241.174.0/24
203.247.64.0/24
203.247.69.0/24
203.247.73.0/24
203.247.160.0/22
203.247.164.0/23
203.247.167.0/24
203.247.170.0/23
203.247.172.0/22
203.247.176.0/22
203.247.180.0/23
203.247.184.0/23
203.247.187.0/24
203.247.188.0/24
203.247.190.0/23
203.247.192.0/20
203.247.216.0/22
203.250.0.0/19
203.250.96.0/21
203.250.110.0/24
203.250.112.0/21
203.250.155.0/24
203.250.156.0/24
203.250.157.0/24
203.250.158.0/23
203.250.160.0/21
203.250.172.0/22
203.250.176.0/21
203.250.192.0/18
203.253.96.0/20
203.253.135.0/24
203.253.136.0/21
203.253.224.0/23
203.253.226.0/24
203.253.230.0/23
203.253.234.0/23
203.253.236.0/24
203.253.238.0/24
203.254.40.0/24
203.254.168.0/23
203.254.175.0/24
203.254.176.0/22
203.254.180.0/23
203.254.182.0/23
203.254.184.0/21
210.98.5.0/24
210.98.6.0/23
210.98.8.0/22
210.98.12.0/24
210.98.14.0/23
210.98.24.0/23
210.98.26.0/24
210.98.28.0/22
210.98.44.0/24
210.98.47.0/24
210.98.48.0/24
210.98.49.0/24
210.98.50.0/23
210.98.52.0/24
210.98.53.0/24
210.98.54.0/24
210.98.55.0/24
210.98.56.0/24
210.98.59.0/24
210.98.60.0/22
210.107.144.0/24
210.107.146.0/24
210.107.152.0/21
210.107.160.0/20
210.107.248.0/22
210.107.252.0/23
210.107.254.0/24
210.110.128.0/21
210.110.143.0/24
210.110.144.0/20
210.110.182.0/23
210.110.184.0/24
210.110.189.0/24
210.110.190.0/23
210.110.192.0/22
210.110.196.0/23
210.110.198.0/24
210.110.205.0/24
210.110.206.0/23
210.110.224.0/21
210.110.232.0/24
210.110.235.0/24
210.110.236.0/22
210.110.252.0/24
210.110.254.0/23
210.114.104.0/23
210.114.106.0/24
210.114.108.0/24
210.117.192.0/23
210.117.194.0/24
210.117.197.0/24
210.117.198.0/24
210.117.208.0/22
210.117.212.0/24
210.117.214.0/23
210.117.216.0/22
210.117.224.0/22
210.117.228.0/23
210.117.230.0/24
210.117.236.0/24
210.117.238.0/23
210.117.240.0/21
210.117.248.0/22
210.117.252.0/23
210.119.20.0/23
210.119.36.0/23
210.119.40.0/21
210.119.48.0/20
210.119.64.0/19
210.119.96.0/22
210.119.100.0/23
210.119.113.0/24
210.119.114.0/23
210.119.116.0/24
210.119.122.0/23
210.119.124.0/23
210.119.126.0/24
210.125.0.0/24
210.125.32.0/20
210.125.56.0/21
210.125.64.0/22
210.125.68.0/23
210.125.70.0/23
210.125.84.0/23
210.125.107.0/24
210.218.192.0/24
210.218.201.0/24
210.218.202.0/23
210.218.204.0/22
210.218.208.0/21
210.218.216.0/22
210.219.32.0/24
210.219.34.0/23
210.219.36.0/22
210.219.40.0/23
210.219.42.0/24
210.219.45.0/24
210.219.48.0/22
210.219.52.0/24
210.219.55.0/24
210.219.56.0/22
210.219.60.0/23
210.219.62.0/24
210.219.63.0/24
211.213.190.0/24
218.233.7.0/24
218.234.156.0/24

IPv6 prefixes

All 24 prefixes.

2001:320::/44
2001:320:10::/46
2001:320:14::/48
2001:320:16::/47
2001:320:18::/45
2001:320:20::/43
2001:320:40::/42
2001:320:80::/41
2001:320:100::/40
2001:320:200::/43
2001:320:220::/44
2001:320:230::/46
2001:320:234::/47
2001:320:236::/48
2001:320:238::/45
2001:320:240::/42
2001:320:280::/41
2001:320:300::/40
2001:320:400::/38
2001:320:800::/37
2001:320:1000::/36
2001:320:2000::/35
2001:320:4000::/34
2001:320:8000::/33

Other ASNs named KISTI

2 other networks use the same organisation name; together with AS1237 they announce 300,288 IPv4 addresses.

ASNNameIPv4 addresses

AS17579KREONET2-AS-KR-KR - KISTI KR6,912

AS9695KOEXP-AS-KR-KR - KISTI KR1,280

Similar-sized networks in South Korea

ASNNameIPv4 addresses

AS38661#14 HCLC-AS-KR-KR - abcle362,496

AS17849#15 SKB-GINAMHANVIT-AS-KR-KR - SK Broadband Co Ltd313,344

AS9845#16 CJCKN-AS-KR-KR - LG HelloVision Corp.302,848

AS17839#18 DREAMPLUS-AS-KR-KR - LG HelloVision Corp.289,024

AS4663#19 ELIMNET-AS-KR-KR - ELIMNET, INC.229,376

AS17864#20 SKB-TBROAD_HANVIT-AS-KR-KR - SK Broadband Co Ltd227,328

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