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:        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

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

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	AS4766	Korea Telecom	524,288
211.136.0.0/13	AS56046	China Mobile Communications Corporation	524,288
211.136.0.0/13	AS9808	China Mobile Communications Corporation	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	AS9318	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
211.23.0.0/16	AS3462	Data Communication Business Group,	65,536
211.40.0.0/16	AS9319	LG DACOM Corporation	65,536
211.32.0.0/16	AS23601	LG DACOM Corporation	65,536
211.186.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.59.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.6.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.32.0.0/16	AS9319	LG DACOM Corporation	65,536
211.109.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.244.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.129.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.53.0.0/16	AS23601	LG DACOM Corporation	65,536
211.243.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.48.0.0/16	AS4766	Korea Telecom	65,536
211.158.0.0/16	AS4837	CHONGQING CNC BROADBAND NETWORKS CO.,LTD	65,536
211.0.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.146.0.0/16	AS4847	China Network Information Center	65,536
211.58.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.182.0.0/16	AS9706	BUSAN EDUCATION RESEARCH & INFORMATION INSTITUTE	65,536
211.169.0.0/16	AS38661	DACOM Corp.	65,536
211.117.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.50.0.0/16	AS23601	LG DACOM Corporation	65,536
211.108.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.22.0.0/16	AS3462	Data Communication Business Group,	65,536
211.40.0.0/16	AS23601	LG DACOM Corporation	65,536
211.32.0.0/16	AS9699	LG DACOM Corporation	65,536
211.48.0.0/16	AS9868	Korea Telecom	65,536
211.21.0.0/16	AS3462	Data Communication Business Group,	65,536
211.11.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.20.0.0/16	AS3462	Data Communication Business Group,	65,536
211.48.0.0/16	AS17615	Korea Telecom	65,536
211.169.0.0/16	AS9526	DACOM Corp.	65,536
211.151.0.0/16	AS9802	21ViaNet(China),Inc.	65,536
211.175.0.0/16	AS9457	DREAMLINE CO.	65,536
211.26.0.0/16	AS9443	Vocus Australia	65,536
211.8.0.0/16	AS4725	SoftBank Corp.	65,536
211.151.0.0/16	AS9802	21ViaNet(China),Inc.	65,536

Hosted domains

There are 1,331 domain names hosted across 122 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	namkyungst.kr	155
211.51.221.206	airpassmall.com	147
211.51.221.166	5000call.net	125
211.51.221.208	keti-dcemc.kr	114
211.51.221.164	daehantech.kr	103
211.51.221.165	booyoung.biz	65
211.51.221.197	djtimber.co.kr	60
211.51.221.205	songhabank.com	54
211.51.221.187	carbontech.kr	47
211.51.221.190	globalplanters.org	33
211.51.221.191	1899-2443.com	27
211.51.221.218	mdsarang.com	25
211.51.221.170	youngpension.com	21
211.51.221.181	geobongfiber.co.kr	20
211.51.221.194	ekkorea.co.kr	17
211.51.221.146	gadgethosp.co.kr	16
211.51.221.189	yscorian.co.kr	16
211.51.221.192	jo1.co.kr	15
211.51.221.183	jjlogis.kr	14
211.51.221.186	acegd.co.kr	14

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

28,034 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
211.51.197.1	AS4766 Korea Telecom	`4.53ms` from Seoul, KR
211.51.245.177	AS4766 Korea Telecom	`2.82ms` from Seoul, KR
211.51.252.199	AS4766 Korea Telecom	`5.49ms` from Seoul, KR
211.51.231.148	AS4766 Korea Telecom	`5.36ms` from Seoul, KR
211.51.221.160	AS4766 Korea Telecom	`5.03ms` from Seoul, KR
211.51.240.102	AS4766 Korea Telecom	`4.08ms` from Seoul, KR
211.51.254.94	AS4766 Korea Telecom	`4.50ms` from Seoul, KR
211.51.198.170	AS4766 Korea Telecom	`4.16ms` from Seoul, KR
211.51.215.110	AS4766 Korea Telecom	`6.25ms` from Seoul, KR
211.51.229.1	AS4766 Korea Telecom	`6.31ms` from Seoul, KR
211.51.239.194	AS4766 Korea Telecom	`3.15ms` from Seoul, KR
211.51.201.145	AS4766 Korea Telecom	`3.42ms` from Seoul, KR
211.51.211.130	AS4766 Korea Telecom	`3.14ms` from Seoul, KR
211.51.226.250	AS4766 Korea Telecom	`7.07ms` from Seoul, KR
211.51.244.193	AS4766 Korea Telecom	`4.24ms` from Seoul, KR
211.51.230.250	AS4766 Korea Telecom	`6.55ms` from Seoul, KR
211.51.255.102	AS4766 Korea Telecom	`3.41ms` from Seoul, KR
211.51.241.193	AS4766 Korea Telecom	`2.85ms` from Seoul, KR
211.51.242.216	AS4766 Korea Telecom	`4.65ms` from Seoul, KR
211.51.249.254	AS4766 Korea Telecom	`5.56ms` from Seoul, KR
211.51.224.58	AS4766 Korea Telecom	`6.92ms` from Seoul, KR
211.51.246.205	AS4766 Korea Telecom	`4.45ms` from Seoul, KR
211.51.251.254	AS4766 Korea Telecom	`5.47ms` from Seoul, KR
211.51.213.165	AS4766 Korea Telecom	`1.77ms` from Seoul, KR
211.51.243.94	AS4766 Korea Telecom	`3.46ms` 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
204.205.148.96	AS7421 Sprint	`0.12ms` from Ashburn, US
86.34.63.0	AS9050 Orange Romania S.A.	`0.25ms` from Bucharest, RO
45.171.92.0	AS268705 TURBONET.NETWORK LTDA	`11.27ms` from Fortaleza, BR
183.142.227.176	AS4134 CHINANET-BACKBONE	`9.39ms` from Hangzhou, CN
23.87.184.224	AS20115 Charter Communications LLC	`9.72ms` from Minneapolis, US
96.232.186.224	AS701 Verizon Business	`2.79ms` from New York City, US
73.150.108.112	AS7922 Comcast Cable Communications, LLC	`8.18ms` from New York City, US
153.201.109.240	AS4713 NTT DOCOMO BUSINESS,Inc.	`5.11ms` from Osaka, JP
13.91.67.192	AS8075 Microsoft Corporation	`0.59ms` from San Jose, US
118.52.138.240	AS4766 Korea Telecom	`2.30ms` from Seoul, KR
211.186.49.112	AS9318 SK Broadband Co Ltd	`1.95ms` from Seoul, KR
116.235.183.64	AS4812 China Telecom (Group)	`9.24ms` from Shanghai, CN
126.141.59.32	AS17676 SoftBank Corp.	`2.98ms` from Tokyo, JP
73.154.21.240	AS7922 Comcast Cable Communications, LLC	`9.92ms` from Ashburn, US
186.235.85.32	AS263097 VN INFRAESTRUTURA DE REDES LTDA.	`0.31ms` from Brasilia, BR
109.138.17.64	AS5432 Proximus NV	`2.17ms` from Brussels, BE
39.38.90.96	AS17557 Pakistan Telecommunication Company Limited	`9.82ms` from Karachi, PK
220.163.254.16	AS134766 CHINANET Yunnan province IDC2 network	`6.84ms` from Kunming, CN
109.158.209.192	AS2856 British Telecommunications PLC	`4.68ms` from London, GB
47.196.2.208	AS5650 Frontier Communications of America, Inc.	`6.45ms` from Miami, US
95.241.59.128	AS3269 Telecom Italia S.p.A.	`19.38ms` from Milan, IT
65.128.67.128	AS209 CenturyLink Communications, LLC	`1.36ms` from Minneapolis, US
46.46.149.192	AS29470 JSC "RetnNet"	`0.58ms` from Moscow, RU
212.30.152.144	AS8359 MTS PJSC	`3.70ms` from Moscow, RU
76.123.217.32	AS7922 Comcast Cable Communications, LLC	`11.22ms` from Murfreesboro, US

Traceroute

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

traceroute -a -n -q1 -f4 211.51.70.85

traceroute to 211.51.70.85 (211.51.70.85): 64 hops max, 52 byte packets

4 [AS4766] 112.174.120.214 1.53 ms

5 *

6 *

7 [AS4766] 211.51.70.85 2.906 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 6th 2025

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