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AS23563 SK Broadband Co Ltd

SKB-VITSSEN-SUWON-AS-KR-KR - SK Broadband Co Ltd · registered in South Korea

IPv4 addresses203,776209 prefixes · 0.007% of announced IPv4
Rank in South Korea#25largest network in KR by IPv4 space, of 853 · 0.19% of KR
Rank worldwide#1,063of 79,396 networks with IPv4
IPv6noneno IPv6 routes announced
CountrySouth Korea869 ASNs registered there
Open AS23563 in ASN lookup Look up an IP in this network (27.119.0.1) All networks in South Korea

IPv4 prefixes

All 209 prefixes, in address order.

  • 27.119.0.0/22
  • 27.119.4.0/22
  • 27.119.8.0/21
  • 27.119.16.0/23
  • 27.119.18.0/24
  • 27.119.19.0/24
  • 27.119.20.0/22
  • 27.119.24.0/21
  • 27.119.32.0/24
  • 27.119.33.0/24
  • 27.119.34.0/23
  • 27.119.36.0/22
  • 27.119.40.0/21
  • 27.119.48.0/21
  • 27.119.56.0/23
  • 27.119.58.0/24
  • 27.119.59.0/24
  • 27.119.60.0/22
  • 27.119.64.0/23
  • 27.119.66.0/23
  • 27.119.68.0/23
  • 27.119.70.0/24
  • 27.119.71.0/24
  • 27.119.72.0/22
  • 27.119.76.0/22
  • 27.119.80.0/22
  • 27.119.84.0/23
  • 27.119.86.0/24
  • 27.119.87.0/24
  • 27.119.88.0/23
  • 27.119.90.0/24
  • 27.119.91.0/24
  • 27.119.92.0/24
  • 27.119.93.0/24
  • 27.119.94.0/23
  • 27.119.96.0/22
  • 27.119.100.0/22
  • 27.119.104.0/21
  • 27.119.112.0/21
  • 27.119.120.0/24
  • 27.119.121.0/24
  • 27.119.122.0/23
  • 27.119.124.0/22
  • 114.29.128.0/21
  • 114.29.136.0/22
  • 114.29.140.0/24
  • 114.29.141.0/24
  • 114.29.142.0/23
  • 114.29.144.0/20
  • 114.108.0.0/23
  • 114.108.2.0/23
  • 114.108.4.0/23
  • 114.108.6.0/24
  • 114.108.7.0/24
  • 114.108.8.0/22
  • 114.108.12.0/22
  • 114.108.16.0/23
  • 114.108.18.0/24
  • 114.108.19.0/24
  • 114.108.20.0/22
  • 114.108.24.0/23
  • 114.108.26.0/23
  • 114.108.32.0/23
  • 114.108.34.0/24
  • 114.108.35.0/24
  • 114.108.36.0/24
  • 114.108.37.0/24
  • 114.108.38.0/23
  • 114.108.40.0/21
  • 114.108.48.0/20
  • 114.108.64.0/21
  • 114.108.72.0/22
  • 114.108.76.0/23
  • 114.108.78.0/23
  • 114.108.80.0/22
  • 114.108.84.0/22
  • 114.108.88.0/22
  • 114.108.92.0/22
  • 114.108.96.0/21
  • 114.108.104.0/22
  • 114.108.108.0/23
  • 114.108.110.0/23
  • 114.108.112.0/21
  • 114.108.120.0/24
  • 114.108.121.0/24
  • 114.108.122.0/24
  • 114.108.123.0/24
  • 114.108.124.0/22
  • 119.17.64.0/23
  • 119.17.66.0/24
  • 119.17.67.0/24
  • 119.17.68.0/24
  • 119.17.69.0/24
  • 119.17.70.0/23
  • 119.17.72.0/22
  • 119.17.76.0/24
  • 119.17.77.0/24
  • 119.17.78.0/23
  • 119.17.80.0/21
  • 119.17.88.0/23
  • 119.17.90.0/24
  • 119.17.91.0/24
  • 119.17.92.0/22
  • 119.17.96.0/23
  • 119.17.98.0/24
  • 119.17.99.0/24
  • 119.17.100.0/22
  • 119.17.104.0/21
  • 119.17.112.0/21
  • 119.17.120.0/23
  • 119.17.122.0/24
  • 119.17.123.0/24
  • 119.17.124.0/22
  • 121.254.0.0/20
  • 121.254.16.0/21
  • 121.254.24.0/22
  • 121.254.28.0/24
  • 121.254.29.0/24
  • 121.254.30.0/23
  • 121.254.32.0/20
  • 121.254.48.0/23
  • 121.254.50.0/24
  • 121.254.51.0/24
  • 121.254.52.0/22
  • 121.254.56.0/23
  • 121.254.58.0/24
  • 121.254.59.0/24
  • 121.254.60.0/22
  • 218.209.0.0/19
  • 218.209.32.0/20
  • 218.209.48.0/22
  • 218.209.52.0/23
  • 218.209.54.0/24
  • 218.209.55.0/24
  • 218.209.56.0/21
  • 218.209.64.0/20
  • 218.209.80.0/21
  • 218.209.88.0/24
  • 218.209.89.0/24
  • 218.209.90.0/23
  • 218.209.92.0/22
  • 218.209.96.0/23
  • 218.209.98.0/24
  • 218.209.99.0/24
  • 218.209.100.0/22
  • 218.209.104.0/21
  • 218.209.112.0/20
  • 218.209.128.0/20
  • 218.209.144.0/21
  • 218.209.152.0/22
  • 218.209.156.0/24
  • 218.209.157.0/24
  • 218.209.158.0/23
  • 218.209.160.0/21
  • 218.209.168.0/24
  • 218.209.169.0/24
  • 218.209.170.0/23
  • 218.209.172.0/22
  • 218.209.176.0/20
  • 218.209.192.0/23
  • 218.209.194.0/23
  • 218.209.196.0/24
  • 218.209.197.0/24
  • 218.209.198.0/23
  • 218.209.200.0/23
  • 218.209.202.0/24
  • 218.209.203.0/24
  • 218.209.204.0/22
  • 218.209.208.0/20
  • 218.209.224.0/20
  • 218.209.240.0/20
  • 222.251.128.0/23
  • 222.251.130.0/24
  • 222.251.131.0/24
  • 222.251.132.0/22
  • 222.251.136.0/22
  • 222.251.140.0/24
  • 222.251.141.0/24
  • 222.251.142.0/23
  • 222.251.144.0/21
  • 222.251.152.0/22
  • 222.251.156.0/22
  • 222.251.160.0/24
  • 222.251.161.0/24
  • 222.251.162.0/23
  • 222.251.164.0/22
  • 222.251.168.0/21
  • 222.251.176.0/22
  • 222.251.180.0/23
  • 222.251.182.0/23
  • 222.251.184.0/22
  • 222.251.188.0/23
  • 222.251.190.0/23
  • 222.251.192.0/24
  • 222.251.193.0/24
  • 222.251.194.0/23
  • 222.251.196.0/22
  • 222.251.200.0/21
  • 222.251.208.0/20
  • 222.251.224.0/24
  • 222.251.225.0/24
  • 222.251.226.0/23
  • 222.251.228.0/22
  • 222.251.232.0/21
  • 222.251.240.0/22
  • 222.251.244.0/23
  • 222.251.246.0/23
  • 222.251.248.0/22
  • 222.251.252.0/22

Other ASNs named SK Broadband Co Ltd

22 other networks use the same organisation name; together with AS23563 they announce 17,192,960 IPv4 addresses.

ASNNameIPv4 addresses
AS9318SKB-AS-KR - SK Broadband Co Ltd KR14,994,944
AS17849SKB-GINAMHANVIT-AS-KR-KR - SK Broadband Co Ltd KR313,344
AS17864SKB-TBROAD_HANVIT-AS-KR-KR - SK Broadband Co Ltd KR227,328
AS9689SKB-FCABLE-AS-KR - SK Broadband Co Ltd KR213,504
AS17857SKB-NAKDONGDIGITALBUSANNET-AS-KR-KR - SK Broadband Co Ltd KR145,408
AS18310SKB-VITSSEN-AS-KR-KR - SK Broadband Co Ltd KR137,216
AS9756SKB-CHEONANVITSSEN-AS-KR-KR - SK Broadband Co Ltd KR108,544
AS38103SKB-QRIXNETKS-AS-KR-KR - SK Broadband Co Ltd KR97,536
AS17854SKBCABLELINE-AS-KR-KR - SK Broadband Co Ltd KR96,256
AS38109SKB-TCNINTERNET-AS-KR-KR - SK Broadband Co Ltd KR95,488
AS17597SKB-SAEROMNET-AS-KR-KR - SK Broadband Co Ltd KR75,776
AS10164SKB-GSD-AS-KR-KR - SK Broadband Co Ltd KR69,632
AS23578SKB-NAMDONGNET-AS-KR-KR - SK Broadband Co Ltd KR67,584
AS38096QRIXNET-AS-KR-KR - SK Broadband Co Ltd KR66,816
AS17573SKB-MINS-AS-KR-KR - SK Broadband Co Ltd KR60,160
AS9971SKB-DONGDAEMUNCABLEINTERNET-AS-KR-KR - SK Broadband Co Ltd KR59,392
AS38095SKB-QRIXNETSDM-AS-KR-KR - SK Broadband Co Ltd KR52,224
AS38097SKB-QRIXNETJJ-AS-KR-KR - SK Broadband Co Ltd KR51,200
AS23575SKB-GOV-KR-KR - SK Broadband Co Ltd KR44,800
AS9277SKB-T-AS-KR-KR - SK Broadband Co Ltd KR4,096
AS17846SKB-H-AS-KR-KR - SK Broadband Co Ltd KR4,096
AS46004SKBMIL-KR - SK Broadband Co Ltd KR3,840

Similar-sized networks in South Korea

ASNNameIPv4 addresses
AS9943#22 KNCTV-AS-KR - KangNam CableTV225,792
AS17841#23 NCIA-AS-KR-KR - NATIONAL INFORMATION RESOURCES SERVICE225,280
AS9689#24 SKB-FCABLE-AS-KR - SK Broadband Co Ltd213,504
AS9694#26 SEOKYUNG-CATV-AS-KR-KR - Seokyung Cable Television Co.. Ltd.197,632
AS45996#27 DAOU-AS-KR-KR - DAOU TECHNOLOGY175,360
AS17878#28 MARK1-AS-KR-KR - DREAMMARK1166,912

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