AS4766 Korea Telecom
IP Address Ranges
| Netblock | Number of IPs | |
|---|---|---|
| 2400:0:611::/48 | 1,208,925,819,614,629,174,706,176 | |
| 2400:0:810::/44 | 19,342,813,113,834,066,795,298,816 | |
| 2400:0:820::/44 | 19,342,813,113,834,066,795,298,816 | |
| 2400:0:830::/44 | 19,342,813,113,834,066,795,298,816 | |
| 2400:0:840::/44 | 19,342,813,113,834,066,795,298,816 | |
| 2400:0:850::/44 | 19,342,813,113,834,066,795,298,816 | |
| 2400:0:860::/44 | 19,342,813,113,834,066,795,298,816 | |
| 2400:12::/48 | 1,208,925,819,614,629,174,706,176 | |
| 2400:32::/48 | 1,208,925,819,614,629,174,706,176 | |
| 2400:e1::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2400:f1::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2400:f2::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2400:f3::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2400:f4::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2400:f5::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2400:f6::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2400:f7::/32 | 79,228,162,514,264,337,593,543,950,336 | |
| 2400:103:c009::/48 | 1,208,925,819,614,629,174,706,176 | |
| 2400:130:c009::/48 | 1,208,925,819,614,629,174,706,176 | |
| 2400:140:c009::/48 | 1,208,925,819,614,629,174,706,176 | |
| 2400:144:c009::/48 | 1,208,925,819,614,629,174,706,176 | |
| 2400:150:c009::/48 | 1,208,925,819,614,629,174,706,176 | |
| 2400:156:c009::/48 | 1,208,925,819,614,629,174,706,176 | |
| 2400:160:c009::/48 | 1,208,925,819,614,629,174,706,176 | |
| 2400:221:3002::/48 | 1,208,925,819,614,629,174,706,176 |
Downstreams
- AS1237 Korea Institute of Science and Technology Information
- AS1781 Korea Advanced Institute of Science and Technology
- AS2563 Seoul Christain University
- AS3748 Electronics and Telecommunications Research Institute
- AS3784 Pohang University of Science and Technology
- AS3819 EdgePrizm
- AS3976 I.Net Technologies Inc.
- AS4665 Yonsei University
- AS4668 LG CNS
- AS4671 KTOA
- AS4756 Korea National Police University
- AS4790 Chosun Ilbo Inc.
- AS4793 Hyundai Heavy Industries
- AS6421 Tata Communications (America) Inc
- AS6619 SamsungSDS Inc.
- AS7557 Korea Trade Network
- AS7558 Korean Broadcasting System (KBS)
- AS7559 donga.com
- AS7560 Jeonbuk National University
- AS7562 HCN Dongjak
- AS7620 Toss Bank
- AS7622 Korea Advanced Institute of Science and Technology
- AS7624 Jeonju University
- AS7626 ScourtFamily
- AS7627 Seoul Broadcasting System
- AS9270 National Infomation Society Agency
- AS9271 Wonkwang University
- AS9273 Itcenentec Co. Ltd.
- AS9317 Inha University
- AS9320 Supreme Court of Korea
- AS9322 Institute of Information and Computing Ewha Womans Univ.
- AS9323 Dongguk University
- AS9454 Watch Tower Bible and Tract Society of Korea
- AS9455 KERIS
- AS9458 Public Officials Benefit Association
- AS9487 Korea Technology Finance Corporation
- AS9488 Seoul National University
- AS9490 Oscar Enterprise
- AS9491 NICE
- AS9492 Maeil Business Newspaper
- AS9522 Shinhan Securities Co. Ltd.
- AS9523 Mokwon University
- AS9524 Hyundai Autoever Corp.
- AS9526 KOSCOM
- AS9529 HyundaiCapital
- AS9530 Shinsegae I C Co. Ltd.
- AS9531 Gwangju Education Research Information Service
- AS9532 Mirae Asset Securities Co. Ltd.
- AS9570 Jeonbuk Bank
- AS9571 INICIS Co. Ltd
- AS9572 Hankuk University of Foreign Studies Computer Center
- AS9575 KCTC
- AS9577 Kyobo Securities
- AS9578 Cheiljedang.Co.Inc.
- AS9628 Tongyang Life Insurance Co. Ltd.
- AS9629 HyundaiCard Co.
- AS9631 Youngsan University
- AS9633 Sudokwon Landfill Site Management Corp
- AS9634 Shinhan Securities Co. Ltd.
- AS9635 Pusan University of Foreign Studies
- AS9638 National Agricultural Cooperative Federation
- AS9642 Korea Internet Security Agency
- AS9645 Next Securities Corporation
- AS9647 Seoul Metropolitan Government
- AS9683 Seoul Facilities Corporation
- AS9684 HANWHA Corp. Information Service div.
- AS9685 KOAT
- AS9686 SungKyunKwan University (SKKU)
- AS9692 Hanwha Investment Securities Co. Ltd.
- AS9694 Seokyung Cable Television Co.. Ltd.
- AS9696 Oscar Enterprise
- AS9699 Standard Chartered
- AS9701 Viaweb
- AS9703 Shinhan Bank
- AS9706 Busan Education Research & Information Institute
- AS9707 Korea Employment Information Management Agency
- AS9708 Pukyong National University
- AS9712 Inet Technologies Co. Ltd.
- AS9753 Dong-A Universirty
- AS9754 Chosun University
- AS9761 AsianaIDT
- AS9763 KIC for Agriculture
- AS9772 Jeonbuk Bank
- AS9775 Hannam University
- AS9776 Kookmin Bank
- AS9777 Gyeongju University
- AS9778 Daejin University
- AS9779 NH Futures
- AS9780 Inje University
- AS9782 WooSong University
- AS9784 KBCard
- AS9840 Inspire Integrated Resort
- AS9842 Lotte Innovate Co. Ltd
- AS9843 NHINFORMATIONSYSTEM
- AS9846 KPN
- AS9847 Korea Securities Finance Corporation
- AS9848 Sejong Networks
- AS9849 Office of the President
- AS9850 WOW-TV
- AS9851 Korea University of Media Arts
- AS9852 Samil PwC
- AS9854 KTO
- AS9855 Korean Federation of Community Credit Cooperatives
- AS9856 WOORI Investment @ Securities
- AS9857 Korea Gas Corporation
- AS9858 Korea Internet Security Agency
- AS9859 ChungCheong University
- AS9860 National Health Insurance Service
- AS9862 GORayNet
- AS9863 Hana Insurance Co. Ltd.
- AS9864 Korea Securities Depository
- AS9866 Shinhan Card
- AS9867 VISION College of Jeonju
- AS9868 Catholic University of Daegu
- AS9870 Dong-Eui University
- AS9947 KT Cloud Co. Ltd
- AS9948 Nice TCM
- AS9949 Hoseo University
- AS9954 Kunsan National University (KNU)
- AS9955 Baekseok University
- AS9957 KINX
- AS9959 Korea Stock Exchange
- AS9960 The Daegu Bank Ltd
- AS9962 Sunchon National University
- AS9966 Taegutec
- AS9967 KBCard
- AS9968 Kyobo Life Insurance Co. Ltd.
- AS9969 Korea National University of Cultural Heritage
- AS9970 Korea University of Technology and Education
- AS9972 IntManagement Corp.
- AS9974 Korea Racing Association
- AS9978 University of Seoul
- AS10034 Seoul Agricultural Marine Products Corp.
- AS10037 Eugene Investment Futures Co. Ltd.
- AS10039 Korea Health Industry Development Institute
- AS10040 NICE Information Telecommunication Inc
- AS10042 Suseong College
- AS10045 Hanbat National University
- AS10046 Howon University
- AS10052 Kyungpook National University
- AS10053 Yeonsung University
- AS10056 Hyundai Marin Fire Insurance
- AS10058 NACUFOK
- AS10060 Yonsei University Health System
- AS10061 Financial Supervisory Service
- AS10062 Branksome Hall Asia
- AS10065 Nice TCM
- AS10069 Seoul Metro
- AS10071 Anyang University
- AS10073 Korea National Open University
- AS10088 Kwangwoon University
- AS10154 Dunamu
- AS10156 Seoul National University of Education
- AS10159 Korea Aerospace University
- AS10166 Korea Water Resources Corporation
- AS10167 Hanvit Bank
- AS10170 The Bank of Korea
- AS10171 Sktelink
- AS10173 KSNET.Inc
- AS10176 Daejon Metropolitan Office of Education
- AS10178 Kakaopay Corp
- AS10179 Daehan Investment Trust Securities
- AS10180 Duksung Womens University
- AS10184 Korean Federation of Community Credit Cooperatives
- AS10185 Hana Bank Co.
- AS10186 Korean Red Cross
- AS10188 Songdo Chadwick international School
- AS10190 Joongbu University
- AS10191 Seegene Medical Foundation
- AS10192 Kiwoom Securities.co. Ltd
- AS10193 Busanbank
- AS10195 HAIonNet
- AS10196 Kookmin Bank
- AS10197 Chonnam National University
- AS11528 Photronics Inc.
- AS12222 Akamai Technologies Inc.
- AS16669 Applied Materials
- AS17567 Airport Railroad Co ltd
- AS17574 Seoul Metropolitan Government Computer Center
- AS17576 National Research Foundation of Korea
- AS17578 Cheju Halla University
- AS17580 National Pension Service
- AS17584 Inchon Metropolitan Office of Education
- AS17588 The Daegu Bank Ltd
- AS17591 National Research Foundation of Korea
- AS17592 Industrial Bank of Korea
- AS17593 NDS Coporation
- AS17594 SMBS
- AS17600 Korea Resources Recovery and Reutilization Corporation
- AS17601 Korea Credit Guarantee Fund
- AS17602 Cretec Chegim
- AS17603 Kum oh National University of Technology (KNUT)
- AS17606 SM Line Corporation
- AS17609 Silla Univ
- AS17611 Korea Housing Finance Corporation
- AS17614 Geumgang University
- AS17615 Chongju University
- AS17616 BAROFN
- AS17834 Wooricard
- AS17837 NHN KCP Corp.
- AS17840 KECA Inc.
- AS17841 National Information Resources Service
- AS17842 Kangwon Land Inc.
- AS17844 National Pension Service
- AS17845 Gyeonggi Technopark
- AS17847 Financial Supervisory Service
- AS17850 Korea Federation of Banks
- AS17851 Kpetro
- AS17852 HANWHALIFE
- AS17855 HANNET Co. Ltd.
- AS17859 NICEINFOMATIONSERVICE
- AS17862 Kangwon National University
- AS17863 Yonhap News Agency
- AS17875 EC-Bank
- AS17881 Inet Hosting Inc.
- AS18023 Korea Maritime and Ocean University
- AS18026 Jeju National University
- AS18027 Namseoul University
- AS18028 Gyeongsang National University
- AS18029 Daejeon Helath Sciences College
- AS18031 Sangmyung University
- AS18032 Shinhan DS
- AS18034 Gangneung-Wonju National University
- AS18035 Hanseo University
- AS18038 Korea National University of Education
- AS18158 Chungbuk National University
- AS18164 Mokpo University
- AS18169 MEMC Korea
- AS18298 Chungnam National University
- AS18299 BNK Securities Co. Ltd
- AS18303 Smartro
- AS18305 Posco DX
- AS18308 Poongsan
- AS18314 Hana Card
- AS18315 Sorabol College
- AS18319 YeungNam College of Science Technology
- AS18320 Kwangju National University of Education
- AS18322 Kumho Tire
- AS18323 Seoul National University Bundang Hospital
- AS18324 Masan College
- AS18325 Korea Christian University
- AS18326 Korea Sports Leisure Co. LTD
- AS18329 Sangmyung University
- AS18331 Daejeon Institute of Science and Technology
- AS18337 KyungSan University
- AS18338 Daoudata
- AS18341 Gumi College
- AS18343 Daegu Technical College
- AS18373 Kookmin Bank
- AS18401 Daegu University
- AS19637 Avago Technologies U.S. Inc.
- AS20940 Akamai International B.V.
- AS21859 Zenlayer Inc
- AS22351 Intelsat Global Service Corporation
- AS23552 Korea Nazarene University
- AS23554 Shinhan Bank
- AS23556 INITECH
- AS23558 KepcoNF
- AS23562 Busan City Environmental Installations Corp
- AS23564 Citibank Korea
- AS23568 CycleBoat Racing Business Division
- AS23569 Seojeong College
- AS23570 University of Incheon
- AS23573 OCI Information Communication
- AS23574 KISPricing
- AS23579 Seoul Metropolitan Office of Education
- AS23580 Daily Sportsworld
- AS23581 Hynix Semiconductor Inc.
- AS23586 Korean Council for University Education
- AS23587 Korea Credit Bureau
- AS23590 IBKCapital
- AS23591 LS ITC
- AS23596 Korea Internet Security Agency
- AS23599 Korea Internet Security Agency
- AS23600 Korea Internet Security Agency
- AS23668 Tech University of Korea
- AS23714 Keimyung University
- AS23908 IIAC
- AS23980 Yeungnam University
- AS23983 Daejeon University
- AS24027 Chinju National University of Education
- AS24319 Akamai Technologies Tokyo ASN
- AS26415 Verisign Global Registry Services
- AS26464 Joyent Inc.
- AS30012 Universal Music Group Inc.
- AS38087 Busanbank
- AS38089 KBank
- AS38090 PearlAbyss
- AS38093 HANATI
- AS38098 NicePayments.Co
- AS38100 INICIS Co. Ltd
- AS38104 Hyejeon University
- AS38105 Soon Chun Hyang University
- AS38110 Chungwoon University
- AS38111 HANA TI
- AS38113 KUMC
- AS38116 KCTC
- AS38122 Seoul Guarantee Insurance Company
- AS38124 iM DS Co. Ltd.
- AS38125 Korea Expressway Corporation
- AS38126 Seoul Information Service Inc.
- AS38128 Gyeonggi Hosing Urban Development Corporation
- AS38129 S1 Corporation
- AS38131 Mokpo National Maritime University
- AS38388 Korea Copyright Protection Agency
- AS38389 Famous Worker
- AS38390 Goyang Office of Education
- AS38391 Gyeonggi Provincial Gimpo Office of Education
- AS38392 Kyonggi Yangpyeong Office of Education
- AS38394 Gyeonggido Seongnam Office of Education
- AS38395 GwangJuHaNam Office of Education
- AS38396 Paju Office of Education Gyeonggi Province
- AS38398 Gyeonggi Uijeongbu Office of Education
- AS38399 Gyeonggi-do Yeoju Office of Education
- AS38400 Gyeonggi-do Pyongtaek Office Education
- AS38401 Gyeonggi Provincial Anseong Office of Education
- AS38402 Gyeonggi Provincial Suwon Office of Education
- AS38405 Gwang Myeong Office of Education
- AS38406 Kyeonggi-Do Hwaseong Office of Education
- AS38407 Gyeonggi-Do Ansan Office of Education
- AS38408 Gyeonggi Provincial Anyang Office of Education
- AS38409 Dongducheonyangju office of Education
- AS38410 Pocheon Office of Education
- AS38411 Yongin office of education
- AS38412 Gyeonggi-Do Icheon Office of Education
- AS38414 Gyeonggi Siheung Office of Education
- AS38415 Guri Namyangju Office of Education
- AS38416 Gyeonggi Yeoncheon Office of Education
- AS38417 Gyeonggi Province Gapyeong office of Education
- AS38418 Korea Appraisal Board
- AS38420 BCCARD
- AS38422 Seowon University
- AS38427 Forcetec Co. Ltd.
- AS38428 Korea Information Communicaions Co.
- AS38433 Korea Fund Administration Compliance
- AS38663 NICEINFOMATIONSERVICE
- AS38667 KakaoBank Corp.
- AS38668 Konkuk University Hospital
- AS38671 S-OIL Corp. Ltd
- AS38674 NLCS Jeju
- AS38676 FlexNetworks
- AS38677 SMHiplus Corporation
- AS38679 KPN
- AS38681 Jeollanamdo Educational Research Information Institute
- AS38683 National Electoin Commission
- AS38688 GSNeotek
- AS38690 HyosungITX
- AS38692 Jeonbuk State Office of Education Future Education Research Institute
- AS38693 Korea Transportation Safety Authority
- AS38694 Cheongju National University Of Edcation
- AS38695 Bucheon University
- AS38696 Korea Brain Research Institute
- AS38697 Hankyong National Univercity
- AS38698 UBASE
- AS38701 Piranha Systems
- AS38702 Hana Bank Co.
- AS38704 IDIS Powertel
- AS38705 Korea Data
- AS44356 Epsilon Telecommunications Ltd
- AS45360 Ssangyong Cement Industry Co. Ltd
- AS45361 Ulsan Jung-Ang Broadcasting Network
- AS45362 TRUSTONASSET
- AS45363 Sunmoon University
- AS45372 ULNetworks Co. Ltd.
- AS45375 Firstfire Marine Insurance
- AS45377 Jeju Special Self Governing Provincial office of Education
- AS45379 Ulsan National Institute of Science and Technology
- AS45380 MMAAC C
- AS45381 Seoul Housing Communities Corporation
- AS45382 Hostcenter
- AS45387 KOCES
- AS45389 Jeonbuk State Office of Education Future Education Research Institute
- AS45391 American Home Assurance Korea
- AS45392 Korailretail
- AS45393 SFS
- AS45397 Korea Advancing Schools Foundation
- AS45399 Hanjin Information Systems Telecommunication Co. Ltd
- AS45401 NicePayments.Co
- AS45403 Incheon Technopark
- AS45404 Shinhan Life Insurance Co. Ltd.
- AS45406 AJU Internet Technology
- AS45407 Dongwon Industries
- AS45408 KOSAF
- AS45409 KBCAPITAL
- AS45445 General Motors Korea Bupyeong
- AS45753 Netsec Limited
- AS45903 CMC Telecom Infrastructure Company
- AS45963 KIRAMS (Korea Institute of Radiological Medical Sciences)
- AS45964 Edwards korea Limited
- AS45968 KONAI
- AS45969 INICIS Co. Ltd
- AS45972 Korea Land and Geospatial Informatix Corporation
- AS45973 KOTRA
- AS45984 Dongnam Institute of Radiologycal Sciences
- AS45986 Korea Internet Security Agency
- AS45988 Korea Credit Guarantee Fund
- AS45989 KL-Net Corp.
- AS45993 Shinbundang Railroad
- AS46000 KB Insurance
- AS46002 PHIS
- AS46009 Yabesk
- AS46010 Samjung Data Service
- AS46012 Induk University
- AS54994 Meteverse Limited.
- AS55329 Telcotech Ltd
- AS55588 Information Technology Center
- AS55589 Korea Institute of Industrial Technology
- AS55591 Korea Institute for Curriculum and Evaluation
- AS55592 Korea Data Telecommunication Co. Ltd.
- AS55593 NetMarble
- AS55596 Gachon University Gil Hospital
- AS55597 National Cancer Center
- AS55598 Korea Environmental Technology Industry Institute
- AS55599 Namyang
- AS55604 Komsco
- AS55606 Hanwha Ocean Co. Ltd.
- AS55608 KB Life Insurance Co. Ltd.
- AS55609 Financial Security Institute
- AS55610 KAIT
- AS55611 Kyungmin University
- AS55613 Korea Appraisal Board
- AS55615 Douzonebizon
- AS55616 DGIST
- AS55617 The Kwangju Bank Ltd.
- AS55618 University of Ulsan
- AS55620 KNOC
- AS55621 Jeonju National University of Education
- AS55622 CNUE
- AS55624 Daelim
- AS55625 Chungwoon University
- AS55628 Incheon Free Economic Zone
- AS55630 KSNET.Inc
- AS55633 Pundang Jesaeng General Hospital
- AS64050 BGP Network Limited
- AS131093 Viva Republica
- AS131094 Hyundai Motor Co
- AS131095 HanwhalifeFinancialService
- AS131096 Master Motors Management
- AS131098 Korea Internet Security Agency
- AS131101 BNK System
- AS131792 The Daegu Bank Ltd
- AS131793 Green Technology Center
- AS131797 National Medical Center
- AS131798 Sangsang Networks Co. Ltd.
- AS131802 NongHyup Life Insurance
- AS131803 Hoban Construsion
- AS131805 NHSAVINGSBANK
- AS131810 Kookmin Bank
- AS131814 Presbyterian Medical Center
- AS131816 IBK Insurance
- AS131817 Hecto Innovation Co. Ltd
- AS131818 Yonhap Infomax
- AS131819 Doosan Engineering Construction Co. Ltd
- AS131821 Korea Investment Real Asset Management Co. Ltd
- AS131822 Korea National University of Transportation
- AS131827 JejuBank
- AS131835 samyangfoods.co
- AS131836 Firstfire Marine Insurance
- AS131838 eBEST InvestmentSecurities
- AS131843 Korea Investment Management Co.
- AS131844 Nonghyup Property and Casualty Insurance Co. Ltd
- AS131845 Korea Investment Value Asset Management Co. Ltd.
- AS131846 Gyeonggi-Do Fire Services
- AS131847 Korea District Heating Corporation
- AS131848 YUHAN
- AS131850 Hana Insurance Co. Ltd.
- AS131852 Eugene Investment Futures Co. Ltd.
- AS131853 Myongji Hospital
- AS131858 Kakaopay Insurance
- AS131860 Nonghyup Property and Casualty Insurance Co. Ltd
- AS131862 Nonghyup Property and Casualty Insurance Co. Ltd
- AS131867 Sinokor Merchant Marine Co. Ltd.
- AS131868 SeoulEnergyCorporation
- AS131870 KSPO
- AS131871 HyundaiCard Co.
- AS131872 IITP
- AS131873 HARIM
- AS131878 HyundaiCard Co.
- AS131883 INSTITUTES of GREENBIO SCIENCE AND TECHNOLOGY
- AS132203 Tencent Building Kejizhongyi Avenue
- AS133771 Rapid Shield Company Limited
- AS135354 Naver Business Platform Asia Pacific Pte. Ltd.
- AS136041 Singapore Telecom Connectplus
- AS136209 CyberForest LLC.
- AS138380 Volvo Group Korea Co LTD Construction Equipment Seoul
- AS141167 AgotoZ HK Limited
- AS152156 Naruto
- AS152198 Gangwon State University
- AS152200 SMBS
- AS152201 NongHyup Agribusiness Group inc.
- AS152206 KCTC
- AS152207 KART KIDI
- AS152209 Eromnet Inc
- AS152210 HyosungITX
- AS152211 Toss Securities Co. Ltd.
- AS152214 Korean Air Lines
- AS152219 Nextrade
- AS152221 YonhapNewsTV
- AS152222 Hyundai Commercial INC.
- AS152224 Hyundai Commercial INC.
- AS152227 KenTech
- AS152232 KT Cloud Co. Ltd
- AS152290 JejuAir
- AS152293 Haesungds
- AS152295 Celltrion
- AS152878 LUNA
- AS398704 Stacks Inc
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.
