IPv4 prefix
121.128.0.0/11
- IP Prefix (CIDR)
- 121.128.0.0/11
- Subnet Mask
- 255.224.0.0
- Address Count
- 2,097,152
- Owner
- IP Manager
- Handle
- IM9-KR
- Country
-
Korea (the Republic of) (KR)
- Address
- 90 Buljeong-ro, Bundang-gu, Seongnam-si, Gyeonggi-do KT Head Office
- Registry
- KRNIC
- Registered Prefix
- 121.128.0.0/11 (121.128.0.0 - 121.159.255.255)
| Announced Prefix | Relationship | Origin ASN | Description | Country | First Address | Last Address |
|---|---|---|---|---|---|---|
| 121.128.0.0/10 | Covering | AS4766 | Korea Telecom |
Korea (the Republic of) (KR)
|
121.128.0.0 | 121.191.255.255 |
| 121.128.28.0/23 | More specific | AS4790 | Chosun ilbo Inc. |
Korea (the Republic of) (KR)
|
121.128.28.0 | 121.128.29.255 |
| 121.128.55.0/24 | More specific | AS9647 | Seoul Metropolitan Government |
Korea (the Republic of) (KR)
|
121.128.55.0 | 121.128.55.255 |
| 121.128.97.0/24 | More specific | AS152214 | Korean Air Lines |
Korea (the Republic of) (KR)
|
121.128.97.0 | 121.128.97.255 |
| 121.128.166.0/24 | More specific | AS4790 | Chosun ilbo Inc. |
Korea (the Republic of) (KR)
|
121.128.166.0 | 121.128.166.255 |
| 121.128.219.0/24 | More specific | AS9647 | Seoul Metropolitan Government |
Korea (the Republic of) (KR)
|
121.128.219.0 | 121.128.219.255 |
| 121.128.224.0/23 | More specific | AS38122 | Seoul Guarantee Insurance Company |
Korea (the Republic of) (KR)
|
121.128.224.0 | 121.128.225.255 |
| 121.129.49.0/24 | More specific | AS9776 | KOOKMIN BANK |
Korea (the Republic of) (KR)
|
121.129.49.0 | 121.129.49.255 |
| 121.130.46.0/23 | More specific | AS9684 | HANWHA Corp. Information Service div. |
Korea (the Republic of) (KR)
|
121.130.46.0 | 121.130.47.255 |
| 121.131.7.0/24 | More specific | AS10040 | NICE Information Telecommunication Inc |
Korea (the Republic of) (KR)
|
121.131.7.0 | 121.131.7.255 |
| 121.131.145.0/24 | More specific | AS38126 | Seoul Information Service Inc. |
Korea (the Republic of) (KR)
|
121.131.145.0 | 121.131.145.255 |
| 121.131.216.0/24 | More specific | AS152214 | Korean Air Lines |
Korea (the Republic of) (KR)
|
121.131.216.0 | 121.131.216.255 |
| 121.131.217.0/24 | More specific | AS9856 | WOORI Investment @ Securities |
Korea (the Republic of) (KR)
|
121.131.217.0 | 121.131.217.255 |
| 121.133.126.0/24 | More specific | AS45401 | NICE Information Telecommunication Inc |
Korea (the Republic of) (KR)
|
121.133.126.0 | 121.133.126.255 |
| 121.133.198.0/24 | More specific | AS38394 | Gyeonggido Seongnam Office of Education |
Korea (the Republic of) (KR)
|
121.133.198.0 | 121.133.198.255 |
| 121.133.199.0/24 | More specific | AS38395 | GwangJuHaNam Office of Education |
Korea (the Republic of) (KR)
|
121.133.199.0 | 121.133.199.255 |
| 121.133.203.0/24 | More specific | AS38399 | Gyeonggi-do Yeoju Office of Education |
Korea (the Republic of) (KR)
|
121.133.203.0 | 121.133.203.255 |
| 121.133.209.0/24 | More specific | AS38412 | Gyeonggi-Do Icheon office of Education |
Korea (the Republic of) (KR)
|
121.133.209.0 | 121.133.209.255 |
| 121.134.234.0/24 | More specific | AS18333 | at(Korea Argo-Fisheries Food Trade Corporation) |
Korea (the Republic of) (KR)
|
121.134.234.0 | 121.134.234.255 |
| 121.135.53.0/24 | More specific | AS38697 | Hankyong National Univercity |
Korea (the Republic of) (KR)
|
121.135.53.0 | 121.135.53.255 |
| 121.135.54.0/23 | More specific | AS38697 | Hankyong National Univercity |
Korea (the Republic of) (KR)
|
121.135.54.0 | 121.135.55.255 |
| 121.135.56.0/24 | More specific | AS38697 | Hankyong National Univercity |
Korea (the Republic of) (KR)
|
121.135.56.0 | 121.135.56.255 |
| 121.135.147.0/24 | More specific | AS46002 | PHIS |
Korea (the Republic of) (KR)
|
121.135.147.0 | 121.135.147.255 |
| 121.135.148.0/24 | More specific | AS46002 | PHIS |
Korea (the Republic of) (KR)
|
121.135.148.0 | 121.135.148.255 |
| 121.135.246.0/24 | More specific | AS9696 | Oscar Enterprise |
Korea (the Republic of) (KR)
|
121.135.246.0 | 121.135.246.255 |
| 121.137.87.0/24 | More specific | AS46009 | YABESK |
Korea (the Republic of) (KR)
|
121.137.87.0 | 121.137.87.255 |
| 121.137.88.0/23 | More specific | AS46009 | YABESK |
Korea (the Republic of) (KR)
|
121.137.88.0 | 121.137.89.255 |
| 121.137.90.0/24 | More specific | AS46009 | YABESK |
Korea (the Republic of) (KR)
|
121.137.90.0 | 121.137.90.255 |
| 121.137.94.0/23 | More specific | AS46009 | YABESK |
Korea (the Republic of) (KR)
|
121.137.94.0 | 121.137.95.255 |
| 121.137.96.0/24 | More specific | AS46009 | YABESK |
Korea (the Republic of) (KR)
|
121.137.96.0 | 121.137.96.255 |
| 121.137.105.0/24 | More specific | AS46009 | YABESK |
Korea (the Republic of) (KR)
|
121.137.105.0 | 121.137.105.255 |
| 121.137.106.0/23 | More specific | AS46009 | YABESK |
Korea (the Republic of) (KR)
|
121.137.106.0 | 121.137.107.255 |
| 121.138.29.0/24 | More specific | AS55630 | KSNET.Inc |
Korea (the Republic of) (KR)
|
121.138.29.0 | 121.138.29.255 |
| 121.138.30.0/24 | More specific | AS55630 | KSNET.Inc |
Korea (the Republic of) (KR)
|
121.138.30.0 | 121.138.30.255 |
| 121.138.156.0/24 | More specific | AS9273 | ITCENENTEC CO. LTD. |
Korea (the Republic of) (KR)
|
121.138.156.0 | 121.138.156.255 |
| 121.139.137.0/24 | More specific | AS3786 | LG DACOM Corporation |
Korea (the Republic of) (KR)
|
121.139.137.0 | 121.139.137.255 |
| 121.139.137.0/24 | More specific | AS23591 | LS ITC |
Korea (the Republic of) (KR)
|
121.139.137.0 | 121.139.137.255 |
| 121.140.50.0/24 | More specific | AS55592 | Korea Data Telecommunication Co. Ltd. |
Korea (the Republic of) (KR)
|
121.140.50.0 | 121.140.50.255 |
| 121.140.76.0/24 | More specific | AS9524 | Hyundai Autoever Corp. |
Korea (the Republic of) (KR)
|
121.140.76.0 | 121.140.76.255 |
| 121.140.97.0/24 | More specific | AS9530 | SHINSEGAE I C Co. Ltd. |
Korea (the Republic of) (KR)
|
121.140.97.0 | 121.140.97.255 |
| 121.140.104.0/24 | More specific | AS55592 | Korea Data Telecommunication Co. Ltd. |
Korea (the Republic of) (KR)
|
121.140.104.0 | 121.140.104.255 |
| 121.140.118.0/24 | More specific | AS55592 | Korea Data Telecommunication Co. Ltd. |
Korea (the Republic of) (KR)
|
121.140.118.0 | 121.140.118.255 |
| 121.140.137.0/24 | More specific | AS55592 | Korea Data Telecommunication Co. Ltd. |
Korea (the Republic of) (KR)
|
121.140.137.0 | 121.140.137.255 |
| 121.141.60.0/24 | More specific | AS9526 | KOSCOM |
Korea (the Republic of) (KR)
|
121.141.60.0 | 121.141.60.255 |
| 121.141.101.0/24 | More specific | AS9776 | KOOKMIN BANK |
Korea (the Republic of) (KR)
|
121.141.101.0 | 121.141.101.255 |
| 121.141.229.0/24 | More specific | AS9526 | KOSCOM |
Korea (the Republic of) (KR)
|
121.141.229.0 | 121.141.229.255 |
| 121.143.242.0/24 | More specific | AS9968 | KYOBO Life Insurance Co. Ltd. |
Korea (the Republic of) (KR)
|
121.143.242.0 | 121.143.242.255 |
| 121.144.140.0/22 | More specific | AS9870 | DONG-EUI UNIVERSITY |
Korea (the Republic of) (KR)
|
121.144.140.0 | 121.144.143.255 |
| 121.144.144.0/22 | More specific | AS9870 | DONG-EUI UNIVERSITY |
Korea (the Republic of) (KR)
|
121.144.144.0 | 121.144.147.255 |
| 121.144.148.0/23 | More specific | AS9870 | DONG-EUI UNIVERSITY |
Korea (the Republic of) (KR)
|
121.144.148.0 | 121.144.149.255 |
| 121.144.249.0/24 | More specific | AS18023 | Korea Maritime and Ocean University |
Korea (the Republic of) (KR)
|
121.144.249.0 | 121.144.249.255 |
| 121.144.250.0/24 | More specific | AS18023 | Korea Maritime and Ocean University |
Korea (the Republic of) (KR)
|
121.144.250.0 | 121.144.250.255 |
| 121.150.105.0/24 | More specific | AS17588 | IM Bank |
Korea (the Republic of) (KR)
|
121.150.105.0 | 121.150.105.255 |
| 121.151.96.0/24 | More specific | AS131792 | IM Bank |
Korea (the Republic of) (KR)
|
121.151.96.0 | 121.151.96.255 |
| 121.156.64.0/24 | More specific | AS55593 | netmarble |
Korea (the Republic of) (KR)
|
121.156.64.0 | 121.156.64.255 |
| 121.156.69.0/24 | More specific | AS17834 | WOORICARD |
Korea (the Republic of) (KR)
|
121.156.69.0 | 121.156.69.255 |
| 121.157.0.0/22 | More specific | AS9862 | GORayNet |
Korea (the Republic of) (KR)
|
121.157.0.0 | 121.157.3.255 |
| 121.157.4.0/24 | More specific | AS9862 | GORayNet |
Korea (the Republic of) (KR)
|
121.157.4.0 | 121.157.4.255 |
| 121.157.108.0/24 | More specific | AS9638 | National Agricultural Cooperative federation |
Korea (the Republic of) (KR)
|
121.157.108.0 | 121.157.108.255 |
| 121.157.110.0/23 | More specific | AS9638 | National Agricultural Cooperative federation |
Korea (the Republic of) (KR)
|
121.157.110.0 | 121.157.111.255 |