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:        [email protected] 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:         [email protected]
nic-hdl:        IA9-KR
mnt-by:         MNT-KRNIC-AP
changed:        [email protected] 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:         [email protected]
nic-hdl:        IM9-KR
mnt-by:         MNT-KRNIC-AP
changed:        [email protected] 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	AS38089	Korea Telecom	524,288
211.216.0.0/13	AS4961	Korea Telecom	524,288
211.216.0.0/13	AS4766	Korea Telecom	524,288
211.216.0.0/13	AS152214	Korea Telecom	524,288
211.136.0.0/13	AS9808	China Mobile Communications Corporation	524,288
211.216.0.0/13	AS9318	Korea Telecom	524,288
211.136.0.0/13	AS56046	China Mobile Communications Corporation	524,288
211.28.0.0/14	AS4804	OPTUS INTERNET - RETAIL	262,144
211.212.0.0/14	AS9318	SK Broadband Co Ltd	262,144
211.208.0.0/14	AS9318	SK Broadband Co Ltd	262,144
211.60.0.0/16	AS3786	LG DACOM Corporation	65,536
211.170.0.0/16	AS3786	DACOM Corp.	65,536
211.32.0.0/16	AS9699	LG DACOM Corporation	65,536
211.59.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.0.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.58.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.20.0.0/16	AS3462	Data Communication Business Group,	65,536
211.129.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.243.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.182.0.0/16	AS9706	BUSAN EDUCATION RESEARCH & INFORMATION INSTITUTE	65,536
211.53.0.0/16	AS3786	LG DACOM Corporation	65,536
211.171.0.0/16	AS3786	DACOM Corp.	65,536
211.32.0.0/16	AS9967	LG DACOM Corporation	65,536
211.40.0.0/16	AS3786	LG DACOM Corporation	65,536
211.244.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.151.0.0/16	AS9802	21ViaNet(China),Inc.	65,536
211.169.0.0/16	AS38661	DACOM Corp.	65,536
211.6.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.50.0.0/16	AS3786	LG DACOM Corporation	65,536
211.158.0.0/16	AS4837	CHONGQING CNC BROADBAND NETWORKS CO.,LTD	65,536
211.21.0.0/16	AS3462	Data Communication Business Group,	65,536
211.169.0.0/16	AS3786	DACOM Corp.	65,536
211.146.0.0/16	AS4847	China Network Information Center	65,536
211.11.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.151.0.0/16	AS9802	21ViaNet(China),Inc.	65,536
211.23.0.0/16	AS3462	Data Communication Business Group,	65,536
211.32.0.0/16	AS3786	LG DACOM Corporation	65,536
211.22.0.0/16	AS3462	Data Communication Business Group,	65,536
211.53.0.0/16	AS18294	LG DACOM Corporation	65,536
211.48.0.0/16	AS9868	Korea Telecom	65,536
211.169.0.0/16	AS9526	DACOM Corp.	65,536
211.175.0.0/16	AS9457	DREAMLINE CO.	65,536
211.98.0.0/16	AS9394	China TieTong Telecommunications Corporation	65,536
211.40.0.0/16	AS9319	LG DACOM Corporation	65,536
211.249.0.0/16	AS9457	DREAMLINE CO.	65,536
211.48.0.0/16	AS4766	Korea Telecom	65,536
211.124.0.0/16	AS9617	JCOM Co., Ltd.	65,536

Hosted domains

There are 1,328 domain names hosted across 120 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	xn--wl2bz5n8te3mar5aq80cjke.kr	155
211.51.221.206	kjcc.kr	147
211.51.221.166	sjplatec.co.kr	125
211.51.221.208	kdjhall.com	114
211.51.221.164	kongkan.kr	103
211.51.221.165	nkmb.kr	65
211.51.221.197	sw-im.com	60
211.51.221.205	xn--in2b89nrlk0rd.kr	54
211.51.221.187	hasudo.com	47
211.51.221.190	xn--2i0bl7gcwjjlg8lu.com	33
211.51.221.191	18005524.com	27
211.51.221.218	gcmsc.or.kr	25
211.51.221.170	gunsanjin.com	21
211.51.221.181	militec-1.net	20
211.51.221.194	jceedu.co.kr	17
211.51.221.146	xn--p80b28ba47jt3p0rl5lar61awn0a3fg.com	16
211.51.221.189	clean365.org	16
211.51.221.192	jeong-jeong-ha.com	15
211.51.221.183	milogis.kr	14
211.51.221.186	xn--p89a78ewshyrg4lem04b.com	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

28,413 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
211.51.251.254	AS4766 Korea Telecom	`5.46ms` from Seoul, KR
211.51.200.125	AS4766 Korea Telecom	`4.10ms` from Seoul, KR
211.51.194.254	AS4766 Korea Telecom	`1.13ms` from Seoul, KR
211.51.216.157	AS4766 Korea Telecom	`10.19ms` from Seoul, KR
211.51.183.200	AS4766 Korea Telecom	`6.17ms` from Seoul, KR
211.51.233.170	AS4766 Korea Telecom	`1.09ms` from Seoul, KR
211.51.249.254	AS4766 Korea Telecom	`5.71ms` from Seoul, KR
211.51.187.126	AS4766 Korea Telecom	`5.98ms` from Seoul, KR
211.51.231.200	AS4766 Korea Telecom	`4.81ms` from Seoul, KR
211.51.247.216	AS4766 Korea Telecom	`4.45ms` from Seoul, KR
211.51.222.71	AS4766 Korea Telecom	`6.61ms` from Seoul, KR
211.51.218.138	AS4766 Korea Telecom	`5.96ms` from Seoul, KR
211.51.232.161	AS4766 Korea Telecom	`1.12ms` from Seoul, KR
211.51.202.231	AS4766 Korea Telecom	`3.18ms` from Seoul, KR
211.51.248.254	AS4766 Korea Telecom	`4.20ms` from Seoul, KR
211.51.205.162	AS4766 Korea Telecom	`3.22ms` from Seoul, KR
211.51.207.1	AS4766 Korea Telecom	`3.20ms` from Seoul, KR
211.51.246.177	AS4766 Korea Telecom	`4.54ms` from Seoul, KR
211.51.221.166	AS4766 Korea Telecom	`4.96ms` from Seoul, KR
211.51.242.254	AS4766 Korea Telecom	`4.28ms` from Seoul, KR
211.51.236.244	AS4766 Korea Telecom	`3.57ms` from Seoul, KR
211.51.193.62	AS4766 Korea Telecom	`1.10ms` from Seoul, KR
211.51.186.190	AS4766 Korea Telecom	`5.85ms` from Seoul, KR
211.51.241.193	AS4766 Korea Telecom	`2.87ms` from Seoul, KR
211.51.228.14	AS4766 Korea Telecom	`5.50ms` 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
219.237.49.48	AS17429 BEIJING GEHUA CATV NETWORK CO.LTD	`2.88ms` from Beijing, CN
109.230.19.240	AS15962 Orange Slovensko a.s.	`9.50ms` from Bratislava, SK
80.135.79.64	AS3320 Deutsche Telekom AG	`3.51ms` from Frankfurt am Main, DE
2.96.152.128	AS13285 TalkTalk Communications Limited	`1.21ms` from London, GB
6.11.159.32	AS668 United States Department of Defense (DoD)	`1.79ms` from Los Angeles, US
185.236.13.144	AS201500 Fibrasur Operadores S.L.	`9.90ms` from Madrid, ES
195.245.201.32	AS8426 ClaraNET LTD	`0.19ms` from Madrid, ES
87.22.99.0	AS3269 Telecom Italia S.p.A.	`3.77ms` from Milan, IT
95.241.59.128	AS3269 Telecom Italia S.p.A.	`19.30ms` from Milan, IT
139.28.222.64	AS204997 FIRST SERVER LIMITED	`0.55ms` from Moscow, RU
126.110.65.112	AS17676 SoftBank Corp.	`8.24ms` from Osaka, JP
49.26.185.48	AS4766 Korea Telecom	`6.10ms` from Seoul, KR
210.93.174.176	AS9842 LOTTE INNOVATE Co.,Ltd	`2.34ms` from Seoul, KR
79.119.180.0	AS8708 DIGI ROMANIA S.A.	`7.51ms` from Timisoara, RO
210.148.118.32	AS2497 Internet Initiative Japan Inc.	`0.95ms` from Tokyo, JP
218.110.245.160	AS2527 Sony Network Communications Inc.	`13.12ms` from Tokyo, JP
52.39.14.208	AS16509 Amazon.com, Inc.	`0.15ms` from Boardman, US
86.34.63.0	AS9050 Orange Romania S.A.	`0.28ms` from Bucharest, RO
35.221.191.16	AS396982 Google LLC	`0.17ms` from Chang-hua, TW
207.211.168.112	AS31898 Oracle Corporation	`0.35ms` from Chicago, US
13.127.31.112	AS16509 Amazon.com, Inc.	`0.13ms` from Mumbai, IN
174.18.76.240	AS209 CenturyLink Communications, LLC	`3.63ms` from Phoenix, US
79.163.244.32	AS5617 Orange Polska Spolka Akcyjna	`2.04ms` from Poznan, PL
27.202.241.128	AS4837 CHINA UNICOM China169 Backbone	`5.23ms` from Qingdao, CN
217.182.44.240	AS16276 OVH SAS	`0.08ms` from Roubaix, FR

Traceroute

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

traceroute -a -n -q1 211.51.12.14

traceroute to 211.51.12.14 (211.51.12.14): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.58 0.095 ms

2 *

3 *

4 *

5 [AS4766] 112.174.15.142 12.58 ms

6 [AS4766] 211.51.12.14 1.248 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 14th 2025

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