1. All IP Ranges
  2. 220.0.0.0/8
  3. 220.66.0.0/16
  4. AS3786  | 220.66.0.0/16

220.66.0.0/16

AS3786  ·  LG DACOM Corporation

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Summary

Country South Korea
Domain kren.kr
ASN AS3786
Registry APNIC
ID KREN

WHOIS Details

inetnum:        220.66.0.0 - 220.67.255.255
netname:        KREN
descr:          Korean Education Network
admin-c:        IM70-AP
tech-c:         IM70-AP
country:        KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2017-02-02T04:55:47Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
e-mail:         irt@nic.or.kr
abuse-mailbox:  irt@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        irt@nic.or.kr was validated on 2020-04-09
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-09-04T01:00:01Z
source:         APNIC

person:         IP Manager
address:        57 Daehak-ro, Jongno-gu, Seoul
country:        KR
phone:          +82-2-882-5363
e-mail:         kindman@kren.kr
nic-hdl:        IM70-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-11-17T00:10:02Z
source:         APNIC

inetnum:        220.66.0.0 - 220.67.255.255
netname:        KREN-KR
descr:          Korean Education Network
country:        KR
admin-c:        IA142-KR
tech-c:         IM142-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
changed:        hostmaster@nic.or.kr 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

person:         IP Manager
address:        57 Daehak-ro, Jongno-gu, Seoul
address:        1
country:        KR
phone:          +82-2-882-5363
e-mail:         kindman@kren.kr
nic-hdl:        IA142-KR
mnt-by:         MNT-KRNIC-AP
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

person:         IP Manager
address:        57 Daehak-ro, Jongno-gu, Seoul
address:        1
country:        KR
phone:          +82-2-882-5363
e-mail:         kindman@kren.kr
nic-hdl:        IM142-KR
mnt-by:         MNT-KRNIC-AP
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

Overlapping Ranges

BGP prefixes that are contained by 220.66.0.0/16

Range ASN Company Num of IPs
220.66.97.0/24 AS18035 Hanseo University 256
220.66.160.0/24 AS4766 Sangji University 256
220.66.230.0/24 AS4766 Kyungbuk College 256
220.66.5.0/24 AS4766 Seoul Social Welfare Graduate Unviersity 256
220.66.167.0/24 AS4766 Munkyung College 256
220.66.47.0/24 AS4766 HANSHIN University 256
220.66.200.0/24 AS4766 Sunlin College 256
220.66.187.0/24 AS4766 Hosan University 256
220.66.171.0/24 AS9777 Gyeongju University 256
220.66.242.0/24 AS4766 DAEWON SCIENCE COLLEGE 256
220.66.170.0/24 AS4766 Munkyung College 256
220.66.159.0/24 AS4766 Sangji University 256
220.66.18.0/24 AS4766 Yewon Arts University 256
220.66.166.0/24 AS18325 Korea Christian University 256
220.66.60.0/24 AS10071 Anyang University 256
220.66.201.0/24 AS18343 Taegu Technical College 256
220.66.28.0/24 AS9318 Luther University 256
220.66.210.0/24 AS18343 Taegu Technical College 256
220.66.29.0/24 AS17868 Hyupsung University 256
220.66.63.0/24 AS23561 Yong-In Unoversity 256
220.66.143.0/24 AS10045 Hanbat National University 256
220.66.138.0/24 AS9318 DANKOOK UNIVERSITY 256
220.66.243.0/24 AS9708 Pukyong National University 256
220.66.70.0/24 AS23561 Yong-In Unoversity 256
220.66.253.0/24 AS9318 Daekyeung College 256
220.66.111.0/24 AS23975 Yonam Institute Of Digital Technology 256
220.66.76.0/24 AS55624 DAELIM COLLEGE 256
220.66.91.0/24 AS3786 Koje College 256
220.66.10.0/24 AS3786 Yuhan College 256
220.66.57.0/24 AS10071 Anyang University 256
220.66.9.0/24 AS3786 Yuhan College 256
220.66.73.0/24 AS55624 DAELIM COLLEGE 256
220.66.80.0/24 AS3786 Koje College 256
220.66.100.0/24 AS3786 Koje College 256
220.66.96.0/24 AS3786 Koje College 256
220.66.180.0/24 AS9777 Gyeongju University 256
220.66.90.0/24 AS45397 Korea Foundation for the Promotion of Private School 256
220.66.58.0/23 AS10071 Anyang University 512
220.66.240.0/23 AS18034 Kangneung Wonju National University 512
220.66.202.0/23 AS18343 Taegu Technical College 512
220.66.208.0/23 AS18343 Taegu Technical College 512
220.66.102.0/23 AS3786 Hangsung University 512
220.66.22.0/23 AS38697 Hankyong National University 512
220.66.224.0/23 AS4766 Sunlin College 512
220.66.168.0/23 AS4766 Munkyung College 512
220.66.228.0/23 AS4766 Kyungbuk College 512
220.66.148.0/23 AS10045 Hanbat National University 512
220.66.74.0/23 AS55624 DAELIM COLLEGE 512
220.66.144.0/22 AS10045 Hanbat National University 1,024
220.66.188.0/22 AS4766 Hosan University 1,024

Nearby Ranges

BGP prefixes that overlap with 220.0.0.0/8

Range ASN Company Num of IPs
220.120.0.0/13 AS4766 Korea Telecom 524,288
220.72.0.0/13 AS17611 Korea Telecom 524,288
220.80.0.0/13 AS4766 Korea Telecom 524,288
220.72.0.0/13 AS4766 Korea Telecom 524,288
220.184.0.0/13 AS4134 CHINANET Zhejiang province network 524,288
220.104.0.0/13 AS4713 NTT DOCOMO BUSINESS,Inc. 524,288
220.96.0.0/14 AS4713 NTT DOCOMO BUSINESS,Inc. 262,144
220.92.0.0/14 AS55620 Korea Telecom 262,144
220.92.0.0/14 AS9708 Korea Telecom 262,144
220.116.0.0/14 AS4766 Korea Telecom 262,144
220.92.0.0/14 AS4766 Korea Telecom 262,144
220.236.0.0/14 AS4804 OPTUS INTERNET - RETAIL 262,144
220.92.0.0/14 AS18330 Korea Telecom 262,144
220.92.0.0/14 AS38697 Korea Telecom 262,144
220.88.0.0/14 AS4766 Korea Telecom 262,144
220.88.0.0/14 AS9778 Korea Telecom 262,144
220.70.0.0/15 AS4766 Korea Telecom 131,072
220.228.0.0/15 AS4780 New Centry InfoComm Tech. Co., Ltd. 131,072
220.228.0.0/15 AS9919 New Centry InfoComm Tech. Co., Ltd. 131,072
220.70.0.0/15 AS38089 Korea Telecom 131,072
220.65.0.0/16 AS38669 DACOM-PUBNETPLUS 65,536
220.230.0.0/16 AS9457 DREAMLINE CO. 65,536
220.212.0.0/16 AS4725 SoftBank Corp. 65,536
220.230.0.0/16 AS9697 DREAMLINE CO. 65,536
220.65.0.0/16 AS9647 DACOM-PUBNETPLUS 65,536
220.219.0.0/16 AS9997 Suzuka Cable Co.,Ltd 65,536
220.240.0.0/16 AS7545 TPG Internet Pty Ltd. 65,536
220.235.0.0/16 AS7545 iiNet Limited 65,536
220.241.0.0/16 AS4515 PCCW Business Internet Access 65,536
220.64.0.0/16 AS9457 DREAMLINE CO. 65,536
220.103.0.0/16 AS9644 SK Telecom 65,536
220.138.0.0/16 AS3462 Chunghwa Telecom Co.,Ltd. 65,536
220.65.0.0/16 AS4766 DACOM-PUBNETPLUS 65,536
220.129.0.0/16 AS3462 Chunghwa Telecom Co.,Ltd. 65,536
220.253.0.0/16 AS18371 iiNet Limited 65,536
220.139.0.0/16 AS3462 Chunghwa Telecom Co.,Ltd. 65,536
220.131.0.0/16 AS3462 Chunghwa Telecom Co.,Ltd. 65,536
220.133.0.0/16 AS3462 Chunghwa Telecom Co.,Ltd. 65,536
220.253.0.0/16 AS4739 iiNet Limited 65,536
220.235.0.0/16 AS4739 iiNet Limited 65,536
220.142.0.0/16 AS3462 Chunghwa Telecom Co.,Ltd. 65,536
220.146.0.0/16 AS4685 ASAHI Net,Inc. 65,536
220.211.0.0/16 AS2527 Sony Network Communications Inc. 65,536
220.136.0.0/16 AS3462 Chunghwa Telecom Co.,Ltd. 65,536
220.151.0.0/16 AS17506 ARTERIA Networks Corporation 65,536
220.233.0.0/16 AS10143 SUPERLOOP (AUSTRALIA) PTY LTD 65,536
220.143.0.0/16 AS3462 Chunghwa Telecom Co.,Ltd. 65,536
220.65.0.0/16 AS23579 DACOM-PUBNETPLUS 65,536
220.174.0.0/16 AS4134 CHINANET hainan province network 65,536
220.209.0.0/16 AS2510 FUJITSU LIMITED 65,536

Hosted domains

There are 52 domain names hosted across 34 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
220.66.250.2 ktsweb.ac.kr 2
220.66.33.132 yewon.ac.kr 1
220.66.25.3 dnhu.ac.kr 1
220.66.251.2 yonam.ac.kr 1
220.66.12.41 hapdong-lib.ac.kr 1
220.66.109.187 gw.ac.kr 1
220.66.33.50 yewon.ac.kr 1
220.66.56.2 gy.ac.kr 1
220.66.251.140 yonam.ac.kr 1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity
Read more

Pingable IPs

1,402 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
220.66.146.29 AS10045 Hanbat National University 3.19ms from Seoul, KR
220.66.103.22 AS3786 LG DACOM Corporation 1.91ms from Incheon, KR
220.66.157.101 AS3786 LG DACOM Corporation 2.48ms from Seoul, KR
220.66.118.251 AS3786 LG DACOM Corporation 4.34ms from Seoul, KR
220.66.38.254 AS3786 LG DACOM Corporation 1.25ms from Seoul, KR
220.66.155.6 AS3786 LG DACOM Corporation 2.67ms from Seoul, KR
220.66.47.1 AS4766 Korea Telecom 1.46ms from Seoul, KR
220.66.21.146 AS3786 LG DACOM Corporation 5.80ms from Incheon, KR
220.66.32.3 AS3786 LG DACOM Corporation 1.48ms from Seoul, KR
220.66.132.155 AS9867 VISION College of Jeonju 4.58ms from Seoul, KR
220.66.148.41 AS10045 Hanbat National University 3.67ms from Seoul, KR
220.66.46.251 AS3786 LG DACOM Corporation 4.47ms from Seoul, KR
220.66.31.62 AS3786 LG DACOM Corporation 2.62ms from Seoul, KR
220.66.10.38 AS3786 LG DACOM Corporation 1.86ms from Seoul, KR
220.66.149.108 AS10045 Hanbat National University 3.16ms from Seoul, KR
220.66.57.7 AS10071 anyang University 2.12ms from Seoul, KR
220.66.156.31 AS3786 LG DACOM Corporation 3.55ms from Seoul, KR
220.66.166.254 AS18325 Korea Christian University 1.02ms from Incheon, KR
220.66.20.252 AS3786 LG DACOM Corporation 6.52ms from Incheon, KR
220.66.160.200 AS4766 Korea Telecom 3.03ms from Seoul, KR
220.66.113.191 AS23975 Yonam Institute of Technology 6.87ms from Seoul, KR
220.66.0.36 AS3786 LG DACOM Corporation 3.33ms from Seoul, KR
220.66.1.38 AS3786 LG DACOM Corporation 3.37ms from Seoul, KR
220.66.154.1 AS3786 LG DACOM Corporation 2.52ms from Incheon, KR
220.66.167.1 AS4766 Korea Telecom 7.20ms from Seoul, KR

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
24.249.4.240 AS22773 Cox Communications Inc. 0.22ms from Atlanta, US
101.27.174.80 AS4837 CHINA UNICOM China169 Backbone 11.97ms from Beijing, CN
44.240.104.144 AS16509 Amazon.com, Inc. 0.19ms from Boardman, US
178.163.23.208 AS8416 InfoLada Ltd 15.59ms from Chelyabinsk, RU
66.24.210.32 AS11351 Charter Communications Inc 16.18ms from Chicago, US
121.204.40.192 AS4134 CHINANET-BACKBONE 2.67ms from Fuzhou, CN
49.171.10.112 AS17858 LG POWERCOMM 2.31ms from Incheon, KR
90.214.229.144 AS5607 Sky UK Limited 5.58ms from London, GB
211.244.193.144 AS9318 SK Broadband Co Ltd 7.30ms from Seoul, KR
142.189.241.240 AS577 Bell Canada 1.11ms from Toronto, CA
41.182.115.64 AS36996 Telecom Namibia 2.40ms from Windhoek, NA
24.126.203.224 AS7922 Comcast Cable Communications, LLC 4.61ms from Atlanta, US
117.50.7.48 AS4808 China Unicom Beijing Province Network 2.89ms from Beijing, CN
64.236.57.0 AS8075 Microsoft Corporation 0.19ms from Des Moines, US
83.192.43.64 AS3215 Orange S.A. 4.21ms from Frankfurt am Main, DE
66.8.243.160 AS20001 Charter Communications Inc 5.06ms from Honolulu, US
121.166.42.48 AS4766 Korea Telecom 2.13ms from Incheon, KR
84.64.165.224 AS5378 Vodafone Limited 6.99ms from London, GB
68.123.161.80 AS7018 AT&T Enterprises, LLC 1.71ms from Los Angeles, US
76.153.107.96 AS7922 Comcast Cable Communications, LLC 5.22ms from Miami, US
203.28.51.0 AS45671 Wholesale Services Provider 2.33ms from Sydney, AU
42.124.52.64 AS10010 TOKAI Communications Corporation 16.81ms from Tokyo, JP
149.100.172.96 AS28941 NOVA NETWORKS S.R.L. 13.35ms from Arezzo, IT
46.198.253.80 AS3329 Vodafone-panafon Hellenic Telecommunications Company SA 1.44ms from Athens, GR
223.205.73.176 AS45758 Triple T Broadband Public Company Limited 2.88ms from Bangkok, TH

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

$
traceroute -a -n -q1 -m6 220.66.6.190
traceroute to 220.66.6.190 (220.66.6.190): 6 hops max, 52 byte packets
1 [AS43289] 45.153.124.1 1.852 ms
3 [] 86.104.125.69 13.983 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Chisinau, MD
On

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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