210.123.0.0/16

AS4766 · Korea Telecom

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Summary

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

WHOIS Details

inetnum:        210.123.0.0 - 210.123.127.255
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 210.0.0.0/8

Range	ASN	Company	Num of IPs
210.8.0.0/15	AS17535	AAPT Limited	131,072
210.8.0.0/15	AS4739	AAPT Limited	131,072
210.8.0.0/15	AS2764	AAPT Limited	131,072
210.65.0.0/16	AS3462	Data Communication Business Group,	65,536
210.122.0.0/16	AS9848	SEJONG NETWORKS	65,536
210.147.0.0/16	AS2518	BIGLOBE Inc.	65,536
210.61.0.0/16	AS3462	Data Communication Business Group,	65,536
210.216.0.0/16	AS7562	LG DACOM Corporation	65,536
210.91.0.0/16	AS4766	Korea Telecom	65,536
210.50.0.0/16	AS9443	VOCUS PTY LTD	65,536
210.109.0.0/16	AS9848	SEJONG NETWORKS	65,536
210.124.0.0/16	AS9856	LG DACOM Corporation	65,536
210.215.0.0/16	AS17766	Nexon Asia Pacific Pty Ltd	65,536
210.124.0.0/16	AS3786	LG DACOM Corporation	65,536
210.108.0.0/16	AS9767	LG DACOM Corporation	65,536
210.109.0.0/16	AS23588	SEJONG NETWORKS	65,536
210.120.0.0/16	AS45404	LG DACOM Corporation	65,536
210.195.0.0/16	AS4788	TM TECHNOLOGY SERVICES SDN. BHD.	65,536
210.11.0.0/16	AS2764	AAPT Limited	65,536
210.182.0.0/16	AS9319	LG DACOM Corporation	65,536
210.216.0.0/16	AS9319	LG DACOM Corporation	65,536
210.144.0.0/16	AS4673	NTT DATA CORPORATION	65,536
210.194.0.0/16	AS9824	JCOM Co., Ltd.	65,536
210.85.0.0/16	AS17709	ETWebs Taiwan Co. Ltd.	65,536
210.122.0.0/16	AS17837	SEJONG NETWORKS	65,536
210.69.0.0/16	AS4782	Government Service Network (GSN)	65,536
210.58.0.0/16	AS17709	ETWebs Taiwan Co. Ltd.	65,536
210.108.0.0/16	AS3786	LG DACOM Corporation	65,536
210.120.0.0/16	AS3786	LG DACOM Corporation	65,536
210.216.0.0/16	AS3786	LG DACOM Corporation	65,536
210.182.0.0/16	AS3786	LG DACOM Corporation	65,536
210.124.0.0/16	AS9319	LG DACOM Corporation	65,536
210.60.0.0/16	AS1659	Taiwan Academic Network	65,536
210.137.0.0/16	AS2907	Research Organization of Information and Systems, National Institute of Informatics	65,536
210.197.0.0/16	AS4725	SoftBank Corp.	65,536
210.130.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
210.108.0.0/16	AS9852	LG DACOM Corporation	65,536
210.240.0.0/16	AS1659	Taiwan Academic Network	65,536
210.128.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
210.202.0.0/16	AS17709	Asia Pacific Telecom Co., Ltd	65,536
210.138.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
210.149.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
210.148.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
210.234.0.0/16	AS2516	KDDI CORPORATION	65,536
210.3.0.0/16	AS140881	HGC Global Communications Limited	65,536
210.202.0.0/16	AS9311	Asia Pacific Telecom Co., Ltd	65,536
210.58.0.0/16	AS131601	ETWebs Taiwan Co. Ltd.	65,536
210.165.0.0/16	AS2514	NTT PC Communications,Inc.	65,536
210.182.0.0/16	AS18317	LG DACOM Corporation	65,536
210.225.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536

Hosted domains

There are 160 domain names hosted across 89 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
210.123.89.72	ollehadshowcase.co.kr	12
210.123.79.102	marketing119.site	8
210.123.52.199	seasonlook.net	8
210.123.92.140	pcs016.co.kr	7
210.123.62.25	koreadanceassociation.org	5
210.123.142.56	koreajjh.com	4
210.123.22.53	glink.or.kr	3
210.123.51.178	itsoft.kr	3
210.123.70.236	k-jcc.co.kr	3
210.123.251.164	rm-rf.app	3
210.123.55.36	chiztoast.kr	3
210.123.142.51	ilovejjh.com	3
210.123.142.138	textilemb.org	3
210.123.92.165	ktfriend.com	3
210.123.149.81	rhaon.jp	3
210.123.22.15	sflo.kr	2
210.123.135.169	sunexcavator.co.kr	2
210.123.149.83	poolsori.co.kr	2
210.123.73.190	mkv.li	2
210.123.135.162	aprokorea.com	2

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

23,294 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
210.123.56.221	AS4766 Korea Telecom	`3.00ms` from Seoul, KR
210.123.83.254	AS4766 Korea Telecom	`0.94ms` from Seoul, KR
210.123.5.62	AS4766 Korea Telecom	`0.95ms` from Seoul, KR
210.123.134.22	AS4766 Korea Telecom	`6.16ms` from Seoul, KR
210.123.100.172	AS4766 Korea Telecom	`1.19ms` from Seoul, KR
210.123.104.126	AS4766 Korea Telecom	`1.20ms` from Seoul, KR
210.123.119.49	AS4766 Korea Telecom	`0.96ms` from Seoul, KR
210.123.106.129	AS4766 Korea Telecom	`1.25ms` from Seoul, KR
210.123.111.96	AS4766 Korea Telecom	`0.94ms` from Seoul, KR
210.123.113.164	AS4766 Korea Telecom	`1.30ms` from Seoul, KR
210.123.59.192	AS4766 Korea Telecom	`1.61ms` from Seoul, KR
210.123.94.200	AS4766 Korea Telecom	`1.29ms` from Seoul, KR
210.123.137.190	AS4766 Korea Telecom	`6.07ms` from Seoul, KR
210.123.81.24	AS4766 Korea Telecom	`1.07ms` from Seoul, KR
210.123.51.189	AS4766 Korea Telecom	`1.47ms` from Seoul, KR
210.123.117.188	AS4766 Korea Telecom	`0.68ms` from Seoul, KR
210.123.41.159	AS18176 KOOKMIN UNIVERSITY	`1.97ms` from Seoul, KR
210.123.151.190	AS4766 Korea Telecom	`6.30ms` from Seoul, KR
210.123.154.238	AS4766 Korea Telecom	`4.68ms` from Seoul, KR
210.123.142.55	AS4766 Korea Telecom	`4.30ms` from Seoul, KR
210.123.132.156	AS4766 Korea Telecom	`4.46ms` from Seoul, KR
210.123.161.196	AS4766 Korea Telecom	`6.64ms` from Seoul, KR
210.123.103.232	AS4766 Korea Telecom	`1.18ms` from Seoul, KR
210.123.141.253	AS4766 Korea Telecom	`4.69ms` from Seoul, KR
210.123.110.148	AS4766 Korea Telecom	`1.12ms` 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
135.236.61.32	AS8075 Microsoft Corporation	`0.29ms` from Amsterdam, NL
77.224.236.192	AS12430 VODAFONE ESPANA S.A.U.	`3.96ms` from Barcelona, ES
71.127.3.128	AS701 Verizon Business	`14.21ms` from Boston, US
45.248.151.0	AS134732 Dot Internet	`4.61ms` from Dhaka, BD
15.158.13.48	AS16509 Amazon.com, Inc.	`0.29ms` from Ho Chi Minh City, VN
202.180.8.144	AS38759 TRANSMEDIA INDONESIA, PT	`0.63ms` from Jakarta, ID
62.105.147.0	AS3216 PJSC "Vimpelcom"	`0.67ms` from Moscow, RU
85.113.146.0	AS34550 INTERCON AS	`8.26ms` from Moscow, RU
14.9.138.128	AS2516 KDDI CORPORATION	`19.03ms` from Tokyo, JP
73.152.226.208	AS7922 Comcast Cable Communications, LLC	`4.84ms` from Ashburn, US
162.234.202.176	AS7018 AT&T Enterprises, LLC	`4.27ms` from Atlanta, US
88.242.45.64	AS9121 Turk Telekomunikasyon Anonim Sirketi	`9.92ms` from Bursa, TR
76.90.37.176	AS20001 Charter Communications Inc	`5.53ms` from Los Angeles, US
128.34.134.128	AS22 Navy Network Information Center (NNIC)	`1.86ms` from Los Angeles, US
47.142.4.16	AS5650 Frontier Communications of America, Inc.	`8.25ms` from Los Angeles, US
64.29.93.128	AS398465 Rackdog, LLC	`0.25ms` from New York City, US
46.199.205.224	AS6866 Cyprus Telecommunications Authority	`2.37ms` from Nicosia, CY
177.106.8.208	AS53006 ALGAR TELECOM S/A	`5.87ms` from Osasco, BR
217.56.196.240	AS3269 Telecom Italia S.p.A.	`6.97ms` from Rende, IT
16.203.183.192	AS20115 Charter Communications LLC	`9.86ms` from San Jose, US
52.78.192.112	AS16509 Amazon.com, Inc.	`0.33ms` from Seoul, KR
60.7.213.64	AS4837 CHINA UNICOM China169 Backbone	`10.18ms` from Tianjin, CN
83.16.73.112	AS5617 Orange Polska Spolka Akcyjna	`1.57ms` from Warsaw, PL
50.90.223.176	AS33363 Charter Communications, Inc	`7.79ms` from Chicago, US
97.149.201.32	AS6167 Verizon Business	`10.11ms` from Chicago, US

Traceroute

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

traceroute -a -n -q1 210.123.29.31

traceroute to 210.123.29.31 (210.123.29.31): 64 hops max, 52 byte packets

1 [AS15169] 172.253.64.138 1.26 ms

2 *

3 *

4 *

5 *

6 [AS4766] 112.188.15.18 2.121 ms

7 [AS4766] 210.123.29.31 2.553 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On November 28th 2025

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