211.51.0.0/16

AS4766 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS4766
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        211.51.0.0 - 211.51.255.255
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
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:        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 211.0.0.0/8

Range	ASN	Company	Num of IPs
211.216.0.0/13	AS17859	Korea Telecom	524,288
211.216.0.0/13	AS152214	Korea Telecom	524,288
211.216.0.0/13	AS9318	Korea Telecom	524,288
211.216.0.0/13	AS4961	Korea Telecom	524,288
211.216.0.0/13	AS38089	Korea Telecom	524,288
211.136.0.0/13	AS9808	China Mobile Communications Corporation	524,288
211.136.0.0/13	AS56046	China Mobile Communications Corporation	524,288
211.216.0.0/13	AS4766	Korea Telecom	524,288
211.212.0.0/14	AS9318	SK Broadband Co Ltd	262,144
211.28.0.0/14	AS4804	OPTUS INTERNET - RETAIL	262,144
211.208.0.0/14	AS9318	SK Broadband Co Ltd	262,144
211.59.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.48.0.0/16	AS9868	Korea Telecom	65,536
211.243.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.108.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.151.0.0/16	AS9308	21ViaNet(China),Inc.	65,536
211.169.0.0/16	AS38661	DACOM Corp.	65,536
211.48.0.0/16	AS17615	Korea Telecom	65,536
211.50.0.0/16	AS3786	LG DACOM Corporation	65,536
211.244.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.117.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.151.0.0/16	AS9308	21ViaNet(China),Inc.	65,536
211.169.0.0/16	AS3786	DACOM Corp.	65,536
211.146.0.0/16	AS4847	China Network Information Center	65,536
211.40.0.0/16	AS3786	LG DACOM Corporation	65,536
211.186.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.124.0.0/16	AS9617	JCOM Co., Ltd.	65,536
211.20.0.0/16	AS3462	Data Communication Business Group,	65,536
211.60.0.0/16	AS3786	LG DACOM Corporation	65,536
211.129.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.32.0.0/16	AS9967	LG DACOM Corporation	65,536
211.183.0.0/16	AS17875	DREAMLINE CO.	65,536
211.0.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.183.0.0/16	AS17878	DREAMLINE CO.	65,536
211.21.0.0/16	AS3462	Data Communication Business Group,	65,536
211.53.0.0/16	AS3786	LG DACOM Corporation	65,536
211.11.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.22.0.0/16	AS3462	Data Communication Business Group,	65,536
211.6.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.109.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.23.0.0/16	AS3462	Data Communication Business Group,	65,536
211.48.0.0/16	AS4766	Korea Telecom	65,536
211.58.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.170.0.0/16	AS3786	DACOM Corp.	65,536
211.171.0.0/16	AS3786	DACOM Corp.	65,536
211.32.0.0/16	AS3786	LG DACOM Corporation	65,536
211.158.0.0/16	AS4837	CHONGQING CNC BROADBAND NETWORKS CO.,LTD	65,536

Hosted domains

There are 1,333 domain names hosted across 121 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
211.51.221.167	busansky.kr	155
211.51.221.206	jukhyanggol.com	147
211.51.221.166	f-crusher.co.kr	125
211.51.221.208	hanjin21.net	114
211.51.221.164	ssh2380.com	103
211.51.221.165	dskj.co.kr	64
211.51.221.197	bs06.kr	60
211.51.221.205	kbook.or.kr	54
211.51.221.187	dwec.kr	47
211.51.221.190	globalplanters.org	33
211.51.221.191	xn--910b797c.com	27
211.51.221.218	konion.or.kr	25
211.51.221.170	nadripension.net	21
211.51.221.181	yongdal24.co.kr	20
211.51.221.194	yhnews.co.kr	17
211.51.221.146	xn--21-j52i034botbba524fw3m.com	16
211.51.221.189	gana4998.co.kr	16
211.51.221.192	gjmunseong.com	15
211.51.221.183	ictmixsoft.com	14
211.51.221.186	hitungsten.kr	13

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

28,154 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
211.51.38.126	AS4766 Korea Telecom	`1.01ms` from Seoul, KR
211.51.9.9	AS4766 Korea Telecom	`0.87ms` from Seoul, KR
211.51.34.199	AS4766 Korea Telecom	`1.03ms` from Seoul, KR
211.51.0.78	AS4766 Korea Telecom	`1.25ms` from Seoul, KR
211.51.33.206	AS4766 Korea Telecom	`1.18ms` from Seoul, KR
211.51.62.129	AS4766 Korea Telecom	`0.91ms` from Seoul, KR
211.51.6.110	AS4766 Korea Telecom	`1.09ms` from Seoul, KR
211.51.3.94	AS4766 Korea Telecom	`1.17ms` from Seoul, KR
211.51.25.22	AS4766 Korea Telecom	`1.24ms` from Seoul, KR
211.51.14.231	AS4766 Korea Telecom	`1.01ms` from Seoul, KR
211.51.7.126	AS4766 Korea Telecom	`1.30ms` from Seoul, KR
211.51.56.123	AS4766 Korea Telecom	`3.13ms` from Seoul, KR
211.51.15.30	AS4766 Korea Telecom	`1.41ms` from Seoul, KR
211.51.27.161	AS4766 Korea Telecom	`1.20ms` from Seoul, KR
211.51.2.155	AS4766 Korea Telecom	`1.16ms` from Seoul, KR
211.51.4.251	AS4766 Korea Telecom	`1.01ms` from Seoul, KR
211.51.58.225	AS4766 Korea Telecom	`4.20ms` from Seoul, KR
211.51.12.94	AS4766 Korea Telecom	`1.06ms` from Seoul, KR
211.51.47.62	AS4766 Korea Telecom	`1.29ms` from Seoul, KR
211.51.21.242	AS4766 Korea Telecom	`1.00ms` from Seoul, KR
211.51.55.83	AS4766 Korea Telecom	`4.21ms` from Seoul, KR
211.51.31.60	AS4766 Korea Telecom	`0.54ms` from Incheon, KR
211.51.36.54	AS4766 Korea Telecom	`1.17ms` from Seoul, KR
211.51.11.158	AS4766 Korea Telecom	`1.46ms` from Seoul, KR
211.51.22.50	AS4766 Korea Telecom	`1.26ms` 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
172.202.60.144	AS8075 Microsoft Corporation	`0.19ms` from Des Moines, US
81.157.44.16	AS2856 British Telecommunications PLC	`2.54ms` from London, GB
66.127.178.32	AS7018 AT&T Enterprises, LLC	`1.82ms` from Los Angeles, US
31.43.51.128	AS50581 Ukrainian Telecommunication Group LLC	`1.03ms` from Lviv, UA
3.96.85.64	AS16509 Amazon.com, Inc.	`0.18ms` from Montreal, CA
153.221.107.32	AS4713 NTT DOCOMO BUSINESS,Inc.	`11.22ms` from Osaka, JP
176.130.137.160	AS5410 Bouygues Telecom SA	`3.02ms` from Paris, FR
100.48.225.0	AS14618 Amazon.com, Inc.	`0.17ms` from Reston, US
176.77.111.224	AS12714 PJSC MegaFon	`1.46ms` from Samara, RU
49.26.185.48	AS4766 Korea Telecom	`6.23ms` from Seoul, KR
199.204.76.144	AS53363 TANGRAM CANADA INC.	`0.07ms` from Toronto, CA
62.47.145.224	AS8447 A1 Telekom Austria AG	`1.69ms` from Vienna, AT
140.31.12.0	AS668 United States Department of Defense (DoD)	`0.59ms` from Atlanta, US
20.119.163.96	AS8075 Microsoft Corporation	`0.26ms` from Boydton, US
170.66.206.96	AS11993 BANCO DO BRASIL S.A.	`0.69ms` from Brasilia, BR
189.174.30.160	AS8151 UNINET	`12.39ms` from Cancún, MX
73.229.40.176	AS7922 Comcast Cable Communications, LLC	`2.69ms` from Denver, US
93.244.90.16	AS3320 Deutsche Telekom AG	`18.25ms` from Duesseldorf, DE
185.163.146.224	AS28919 Stadtwerke Kufstein GmbH	`7.07ms` from Frankfurt am Main, DE
91.130.33.144	AS1257 Tele2 Sverige AB	`0.86ms` from Goeteborg, SE
125.184.173.16	AS17858 LG POWERCOMM	`7.41ms` from Incheon, KR
180.245.77.16	AS7713 PT Telekomunikasi Indonesia	`14.21ms` from Jakarta, ID
172.167.36.48	AS8075 Microsoft Corporation	`0.23ms` from London, GB
45.148.198.192	AS202913 CLOUDWIFI, SL	`7.80ms` from Madrid, ES
84.188.187.144	AS3320 Deutsche Telekom AG	`2.87ms` from Nuernberg, DE

Traceroute

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

traceroute -a -n -q1 211.51.14.16

traceroute to 211.51.14.16 (211.51.14.16): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.59 0.07 ms

2 *

3 *

4 *

5 [AS4766] 112.174.58.58 1.643 ms

6 *

7 *

8 [AS4766] 211.51.14.16 1.88 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On January 9th 2026

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