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  2. 221.0.0.0/8
  3. AS4766  | 221.160.0.0/13

221.160.0.0/13

AS4766  ·  Korea Telecom

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Summary

Country South Korea
Domain kt.com
ASN AS4766
Registry APNIC
ID KORNET

WHOIS Details

inetnum:        221.160.0.0 - 221.167.255.255
netname:        KORNET
descr:          Korea Telecom
country:        KR
admin-c:        IM667-AP
tech-c:         IM667-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2025-11-03T08:15:10Z
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:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IM667-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2017-03-28T06:37:04Z
source:         APNIC

inetnum:        221.160.0.0 - 221.167.255.255
netname:        KORNET-KR
descr:          Korea Telecom
country:        KR
admin-c:        IA9-KR
tech-c:         IM9-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
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:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        KT Head Office
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IA9-KR
mnt-by:         MNT-KRNIC-AP
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:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        KT Head Office
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IM9-KR
mnt-by:         MNT-KRNIC-AP
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

Nearby Ranges

BGP prefixes that overlap with 221.0.0.0/8

Range ASN Company Num of IPs
221.144.0.0/12 AS38697 Korea Telecom 1,048,576
221.144.0.0/12 AS4766 Korea Telecom 1,048,576
221.144.0.0/12 AS17576 Korea Telecom 1,048,576
221.144.0.0/12 AS38405 Korea Telecom 1,048,576
221.240.0.0/12 AS17506 ARTERIA Networks Corporation 1,048,576
221.144.0.0/12 AS55622 Korea Telecom 1,048,576
221.144.0.0/12 AS45400 Korea Telecom 1,048,576
221.144.0.0/12 AS152214 Korea Telecom 1,048,576
221.144.0.0/12 AS10184 Korea Telecom 1,048,576
221.144.0.0/12 AS45360 Korea Telecom 1,048,576
221.144.0.0/12 AS10185 Korea Telecom 1,048,576
221.144.0.0/12 AS17851 Korea Telecom 1,048,576
221.144.0.0/12 AS9850 Korea Telecom 1,048,576
221.144.0.0/12 AS9856 Korea Telecom 1,048,576
221.144.0.0/12 AS9526 Korea Telecom 1,048,576
221.176.0.0/13 AS9808 China Mobile Communications Corporation 524,288
221.176.0.0/13 AS56044 China Mobile Communications Corporation 524,288
221.176.0.0/13 AS56040 China Mobile Communications Corporation 524,288
221.216.0.0/13 AS4808 China Unicom Beijing province network 524,288
221.176.0.0/13 AS56042 China Mobile Communications Corporation 524,288
221.224.0.0/13 AS4134 CHINANET jiangsu province network 524,288
221.224.0.0/13 AS138950 CHINANET jiangsu province network 524,288
221.224.0.0/13 AS131325 CHINANET jiangsu province network 524,288
221.224.0.0/13 AS134770 CHINANET jiangsu province network 524,288
221.176.0.0/13 AS24445 China Mobile Communications Corporation 524,288
221.224.0.0/13 AS23650 CHINANET jiangsu province network 524,288
221.176.0.0/13 AS56048 China Mobile Communications Corporation 524,288
221.184.0.0/13 AS4713 NTT DOCOMO BUSINESS,Inc. 524,288
221.224.0.0/13 AS137697 CHINANET jiangsu province network 524,288
221.224.0.0/13 AS137702 CHINANET jiangsu province network 524,288
221.176.0.0/13 AS56046 China Mobile Communications Corporation 524,288
221.176.0.0/13 AS139080 China Mobile Communications Corporation 524,288
221.224.0.0/13 AS140292 CHINANET jiangsu province network 524,288
221.176.0.0/13 AS132510 China Mobile Communications Corporation 524,288
221.224.0.0/13 AS134756 CHINANET jiangsu province network 524,288
221.224.0.0/13 AS4809 CHINANET jiangsu province network 524,288
221.224.0.0/13 AS146966 CHINANET jiangsu province network 524,288
221.176.0.0/13 AS141425 China Mobile Communications Corporation 524,288
221.140.0.0/14 AS9318 SK Broadband Co Ltd 262,144
221.232.0.0/14 AS58563 CHINANET Hubei province network 262,144
221.124.0.0/14 AS9304 HGC Global Communications Limited 262,144
221.232.0.0/14 AS4134 CHINANET Hubei province network 262,144
221.140.0.0/14 AS38695 SK Broadband Co Ltd 262,144
221.140.0.0/14 AS131812 SK Broadband Co Ltd 262,144

Hosted domains

There are 693 domain names hosted across 318 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
221.161.197.55 liteofeast.org 78
221.161.197.34 nicetrip.co.kr 66
221.167.210.244 dosup.com 23
221.163.201.52 udmtekcompany.com 14
221.160.135.15 xn--hz2b91erwftqdczu.com 12
221.162.94.238 1pi.kr 11
221.165.185.139 sosodam.kr 10
221.161.197.196 innologis.co.kr 9
221.165.153.136 kimsautoparts.com 8
221.162.37.119 park119.or.kr 8
221.161.197.197 etaxone.com 7
221.167.250.54 xn--p39aa231kba.com 7
221.161.136.17 busansunflowercenter.or.kr 7
221.164.83.57 sejinheavy.com 6
221.164.14.38 disabledsafety.com 6
221.161.97.170 bcr.or.kr 6
221.163.60.144 yuraharness.kr 6
221.161.197.185 hanirang.com 6
221.165.27.251 010car.kr 5
221.162.108.10 lucidtaxservice.com 5

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

291,176 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
221.167.245.120 AS4766 Korea Telecom 1.14ms from Seoul, KR
221.167.232.138 AS4766 Korea Telecom 1.41ms from Seoul, KR
221.167.235.254 AS4766 Korea Telecom 1.37ms from Seoul, KR
221.167.246.47 AS4766 Korea Telecom 1.28ms from Seoul, KR
221.167.216.150 AS4766 Korea Telecom 1.28ms from Seoul, KR
221.167.228.254 AS4766 Korea Telecom 1.30ms from Seoul, KR
221.167.242.254 AS4766 Korea Telecom 1.26ms from Seoul, KR
221.167.219.254 AS4766 Korea Telecom 1.23ms from Seoul, KR
221.167.225.137 AS4766 Korea Telecom 1.22ms from Seoul, KR
221.167.223.127 AS4766 Korea Telecom 1.28ms from Seoul, KR
221.167.244.98 AS4766 Korea Telecom 1.36ms from Seoul, KR
221.167.250.220 AS4766 Korea Telecom 1.10ms from Seoul, KR
221.167.233.37 AS4766 Korea Telecom 1.40ms from Seoul, KR
221.167.247.254 AS4766 Korea Telecom 1.49ms from Seoul, KR
221.167.220.104 AS4766 Korea Telecom 1.41ms from Seoul, KR
221.167.240.7 AS4766 Korea Telecom 1.31ms from Seoul, KR
221.167.236.63 AS4766 Korea Telecom 1.50ms from Seoul, KR
221.167.217.140 AS4766 Korea Telecom 1.28ms from Seoul, KR
221.167.229.53 AS4766 Korea Telecom 1.34ms from Seoul, KR
221.167.241.254 AS4766 Korea Telecom 1.36ms from Seoul, KR
221.167.227.84 AS4766 Korea Telecom 1.23ms from Seoul, KR
221.167.218.110 AS4766 Korea Telecom 1.35ms from Seoul, KR
221.167.224.135 AS4766 Korea Telecom 1.23ms from Seoul, KR
221.167.248.50 AS4766 Korea Telecom 1.18ms from Seoul, KR
221.167.254.25 AS4766 Korea Telecom 1.35ms 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
206.221.80.77 AS264797 Cablenet S.A. 8.08ms from Buenos Aires, AR
52.252.196.29 AS8075 Microsoft Corporation 0.41ms from Chicago, US
175.42.20.77 AS4837 CHINA UNICOM China169 Backbone 7.42ms from Fuzhou, CN
73.6.80.45 AS7922 Comcast Cable Communications, LLC 6.43ms from Houston, US
211.139.71.253 AS9808 China Mobile Communications Group Co., Ltd. 1.39ms from Lhasa, CN
193.106.42.253 AS50542 JSC "ER-Telecom Holding" 8.81ms from Moscow, RU
108.233.161.77 AS7018 AT&T Enterprises, LLC 6.59ms from Redding, US
34.226.250.29 AS14618 Amazon.com, Inc. 0.15ms from Reston, US
191.252.67.29 AS27715 Locaweb Serviços de Internet S/A 1.01ms from Sao Paulo, BR
175.227.160.77 AS4766 Korea Telecom 7.05ms from Seoul, KR
39.115.9.141 AS9318 SK Broadband Co Ltd 1.49ms from Seoul, KR
219.87.228.205 AS9924 Taiwan Fixed Network, Telco and Network Service Provider. 8.05ms from Taipei, TW
37.131.227.189 AS44327 DELTA COMM LLC 0.86ms from Tbilisi, GE
216.8.185.205 AS7057 Managed Network Systems Inc. 5.84ms from Toronto, CA
203.151.116.29 AS4618 Internet Thailand Company Limited 1.66ms from Bangkok, TH
162.222.9.221 AS62523 CIRBN, LLC 5.99ms from Chicago, US
71.66.49.253 AS10796 Charter Communications Inc 3.01ms from Columbus, US
120.237.9.253 AS9808 China Mobile Communications Group Co., Ltd. 6.23ms from Guangzhou, CN
80.228.199.77 AS9145 EWE TEL GmbH 6.35ms from Hamburg, DE
82.223.251.13 AS8560 IONOS SE 0.40ms from Logrono, ES
109.159.14.157 AS2856 British Telecommunications PLC 7.40ms from London, GB
109.238.24.253 AS51580 TIMENET SPA 13.54ms from Milan, IT
95.73.81.125 AS12389 PJSC Rostelecom 3.05ms from Moscow, RU
65.183.110.221 AS17253 TEC of Jackson, Inc. 3.92ms from New Orleans, US
92.145.249.173 AS3215 Orange S.A. 14.90ms from Paris, FR

Traceroute

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

$
traceroute -a -n -q1 -f7 221.160.173.23
traceroute to 221.160.173.23 (221.160.173.23): 64 hops max, 52 byte packets
8 [AS4766] 112.188.196.6 2.873 ms
9 *
10 [AS4766] 221.160.173.23 5.053 ms
Measurement taken from IPinfo ProbeNet in Seoul, KR
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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