211.63.128.0/17

AS4766 · Korea Telecom

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Summary

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

WHOIS Details

inetnum:        211.63.128.0 - 211.63.191.255
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 211.63.0.0/16

Range	ASN	Company	Num of IPs
211.63.0.0/19	AS18302	SK Broadband Co Ltd	8,192
211.63.32.0/19	AS3786	LG DACOM Corporation	8,192
211.63.0.0/19	AS45393	SK Broadband Co Ltd	8,192
211.63.0.0/19	AS9318	SK Broadband Co Ltd	8,192
211.63.57.0/24	AS9647	SEROMINFORSYSTEM	256

Hosted domains

There are 234 domain names hosted across 47 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
211.63.185.172	comkr.com	123
211.63.185.187	edesign.or.kr	13
211.63.185.189	eurekabidet.com	11
211.63.185.135	mykim.pe.kr	9
211.63.185.190	saybye.pe.kr	6
211.63.185.174	grandlapin.com	4
211.63.138.176	lumir.life	3
211.63.185.149	madcatstudio.net	3
211.63.158.167	kmamall.co.kr	3
211.63.194.155	daeseungtax.co.kr	2
211.63.212.71	hipreed.net	2
211.63.185.140	heykorea.net	2
211.63.212.202	dmbace.co.kr	2
211.63.223.148	ylfilm.co.kr	2
211.63.212.75	gepscall.co.kr	2
211.63.212.157	usquare.co.kr	2
211.63.182.67	pungkyeongchae.co.kr	2
211.63.212.150	kumhotourbuslines.co.kr	2
211.63.168.35	ktcs114.com	2
211.63.212.152	kumhoexpress.co.kr	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

13,591 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
211.63.145.22	AS4766 Korea Telecom	`1.37ms` from Seoul, KR
211.63.202.254	AS4766 Korea Telecom	`1.26ms` from Seoul, KR
211.63.175.33	AS17588 The Daegu Bank, Ltd	`4.24ms` from Seoul, KR
211.63.190.240	AS4766 Korea Telecom	`5.95ms` from Seoul, KR
211.63.167.193	AS4766 Korea Telecom	`6.27ms` from Seoul, KR
211.63.183.85	AS4766 Korea Telecom	`5.47ms` from Seoul, KR
211.63.205.254	AS4766 Korea Telecom	`0.99ms` from Seoul, KR
211.63.186.129	AS4766 Korea Telecom	`3.10ms` from Seoul, KR
211.63.159.52	AS4766 Korea Telecom	`1.63ms` from Seoul, KR
211.63.165.12	AS4766 Korea Telecom	`8.54ms` from Seoul, KR
211.63.169.185	AS4766 Korea Telecom	`6.60ms` from Seoul, KR
211.63.161.148	AS4766 Korea Telecom	`1.34ms` from Seoul, KR
211.63.174.221	AS4766 Korea Telecom	`5.59ms` from Seoul, KR
211.63.129.113	AS4766 Korea Telecom	`1.17ms` from Seoul, KR
211.63.173.205	AS4766 Korea Telecom	`5.06ms` from Seoul, KR
211.63.141.230	AS4766 Korea Telecom	`0.90ms` from Seoul, KR
211.63.162.232	AS4766 Korea Telecom	`1.60ms` from Seoul, KR
211.63.140.83	AS4766 Korea Telecom	`1.49ms` from Seoul, KR
211.63.158.193	AS4766 Korea Telecom	`0.85ms` from Seoul, KR
211.63.146.156	AS4766 Korea Telecom	`1.12ms` from Seoul, KR
211.63.156.51	AS4766 Korea Telecom	`6.28ms` from Seoul, KR
211.63.131.39	AS4766 Korea Telecom	`1.25ms` from Seoul, KR
211.63.148.186	AS4766 Korea Telecom	`1.16ms` from Seoul, KR
211.63.188.254	AS4766 Korea Telecom	`4.32ms` from Seoul, KR
211.63.170.42	AS4766 Korea Telecom	`6.50ms` 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
217.104.127.1	AS33915 Vodafone Libertel B.V.	`3.87ms` from Amsterdam, NL
79.129.77.209	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`1.88ms` from Athens, GR
123.57.82.17	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.91ms` from Beijing, CN
45.71.181.17	AS262186 TV AZTECA SUCURSAL COLOMBIA	`9.97ms` from Bogota, CO
216.255.171.17	AS11776 Breezeline	`4.06ms` from Boston, US
179.125.40.225	AS263629 MASTER TECNOLOGIA	`14.54ms` from Brasilia, BR
139.214.25.1	AS4837 CHINA UNICOM China169 Backbone	`2.35ms` from Changchun, CN
70.63.196.65	AS11426 Charter Communications Inc	`0.21ms` from Charlotte, US
66.227.160.241	AS20115 Charter Communications LLC	`10.75ms` from Chicago, US
89.28.66.1	AS31252 StarNet Solutii SRL	`0.48ms` from Chisinau, MD
27.9.193.65	AS4837 CHINA UNICOM China169 Backbone	`3.13ms` from Chongqing, CN
66.213.112.33	AS26923 Ohio Public Library Information Network (OPLIN)	`2.56ms` from Columbus, US
128.77.172.177	AS3292 TDC Holding A/S	`0.81ms` from Copenhagen, DK
47.162.149.1	AS5650 Frontier Communications of America, Inc.	`7.47ms` from Dallas, US
50.65.248.1	AS6327 Shaw Communications	`6.02ms` from Edmonton, CA
88.152.108.1	AS3209 Vodafone GmbH	`0.92ms` from Frankfurt am Main, DE
20.52.202.225	AS8075 Microsoft Corporation	`0.28ms` from Frankfurt am Main, DE
64.18.244.193	AS40523 OACYS TECHNOLOGY	`6.57ms` from Fremont, US
58.254.76.1	AS17816 China Unicom IP network China169 Guangdong province	`6.71ms` from Guangzhou, CN
202.104.42.1	AS4134 CHINANET-BACKBONE	`4.38ms` from Guangzhou, CN
63.221.140.225	AS3491 PCCW Global, Inc.	`1.58ms` from Hong Kong, HK
104.219.5.1	AS36048 Berry-IT Incorporated	`2.33ms` from Indianapolis, US
105.224.64.1	AS37457 Telkom SA Ltd.	`2.38ms` from Johannesburg, ZA
216.21.114.33	AS15116 Pittsburg State University	`4.98ms` from Kansas City, US
86.145.81.97	AS2856 British Telecommunications PLC	`6.02ms` from London, GB

Traceroute

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

traceroute -a -n -q1 211.63.181.186

traceroute to 211.63.181.186 (211.63.181.186): 64 hops max, 52 byte packets

1 [AS15169] 172.253.64.138 1.19 ms

2 *

3 *

4 *

5 [AS4766] 112.190.204.146 6.11 ms

6 *

7 [AS4766] 211.63.181.186 13.428 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 14th 2025

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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