203.236.0.0/17

AS4766 · Korea Telecom

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Summary

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

WHOIS Details

inetnum:        203.236.64.0 - 203.236.127.255
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

Overlapping Ranges

BGP prefixes that are contained by 203.236.0.0/17

Range	ASN	Company	Num of IPs
203.236.40.0/22	AS9644	SK Telecom	1,024
203.236.32.0/21	AS9644	SK Telecom	2,048
203.236.0.0/19	AS9644	SK Telecom	8,192

Nearby Ranges

BGP prefixes that overlap with 203.236.0.0/16

Range	ASN	Company	Num of IPs
203.236.128.0/18	AS138195	SEJONG NETWORKS	16,384
203.236.128.0/18	AS23588	SEJONG NETWORKS	16,384
203.236.192.0/18	AS9286	KINX	16,384
203.236.128.0/18	AS9848	SEJONG NETWORKS	16,384
203.236.128.0/18	AS9973	SEJONG NETWORKS	16,384
203.236.0.0/19	AS9644	SK Telecom	8,192
203.236.32.0/21	AS9644	SK Telecom	2,048
203.236.188.0/22	AS23584	PUSAN CATV	1,024
203.236.40.0/22	AS9644	SK Telecom	1,024
203.236.135.0/24	AS9845	CJcablenet	256

Hosted domains

There are 172 domain names hosted across 74 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.236.44.170	udap.co.kr	15
203.236.111.26	xn--vk1bl3rpqiwxn.kr	7
203.236.86.175	buildcatalog.co.kr	6
203.236.50.91	pubmedin.com	5
203.236.44.22	sr-dahnworld.com	4
203.236.44.18	ilchi.es	4
203.236.44.34	healingmall.net	4
203.236.44.172	dotongschool.com	3
203.236.44.93	xn--3e0bl59b6ik.org	3
203.236.44.73	healthleader.co.kr	2
203.236.86.15	intomark.co.kr	2
203.236.44.173	ilchiacademy.co.kr	2
203.236.111.14	dhflour.kr	2
203.236.86.45	wipson.com	2
203.236.44.91	khappybrain.org	2
203.236.117.120	funnyflux.kr	2
203.236.86.70	wintelips.com	1
203.236.44.83	benjamingapyear.kr	1
203.236.86.17	patbridge.com	1
203.236.44.175	xn--2o2b99dvvmwsbnw4aivb.org	1

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

6,541 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
203.236.1.30	AS9644 SK Telecom	`2.58ms` from Seoul, KR
203.236.94.62	AS4766 Korea Telecom	`0.94ms` from Seoul, KR
203.236.92.46	AS4766 Korea Telecom	`1.21ms` from Seoul, KR
203.236.90.126	AS4766 Korea Telecom	`0.94ms` from Seoul, KR
203.236.103.30	AS4766 Korea Telecom	`1.21ms` from Seoul, KR
203.236.46.1	AS4766 Korea Telecom	`1.86ms` from Seoul, KR
203.236.63.144	AS4766 Korea Telecom	`1.29ms` from Seoul, KR
203.236.15.2	AS9644 SK Telecom	`2.08ms` from Seoul, KR
203.236.127.126	AS4766 Korea Telecom	`1.26ms` from Seoul, KR
203.236.98.126	AS4766 Korea Telecom	`1.23ms` from Seoul, KR
203.236.35.111	AS9644 SK Telecom	`2.35ms` from Seoul, KR
203.236.86.254	AS4766 Korea Telecom	`0.97ms` from Seoul, KR
203.236.53.202	AS4766 Korea Telecom	`1.61ms` from Seoul, KR
203.236.111.53	AS4766 Korea Telecom	`1.02ms` from Seoul, KR
203.236.125.157	AS4766 Korea Telecom	`1.04ms` from Seoul, KR
203.236.112.129	AS4766 Korea Telecom	`0.86ms` from Seoul, KR
203.236.107.62	AS4766 Korea Telecom	`1.23ms` from Seoul, KR
203.236.101.126	AS4766 Korea Telecom	`1.24ms` from Seoul, KR
203.236.44.55	AS4766 Korea Telecom	`1.56ms` from Seoul, KR
203.236.69.2	AS9696 Oscar Enterprise	`1.75ms` from Seoul, KR
203.236.52.139	AS4766 Korea Telecom	`1.28ms` from Seoul, KR
203.236.119.51	AS4766 Korea Telecom	`0.88ms` from Seoul, KR
203.236.104.78	AS4766 Korea Telecom	`1.37ms` from Seoul, KR
203.236.120.46	AS4766 Korea Telecom	`1.01ms` from Seoul, KR
203.236.2.82	AS9644 SK Telecom	`2.06ms` 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
213.127.200.81	AS33915 Vodafone Libertel B.V.	`4.49ms` from Amsterdam, NL
92.109.94.1	AS33915 Vodafone Libertel B.V.	`3.75ms` from Amsterdam, NL
71.163.26.1	AS701 Verizon Business	`2.43ms` from Ashburn, US
47.27.10.177	AS20115 Charter Communications LLC	`10.16ms` from Atlanta, US
190.84.216.1	AS10620 Telmex Colombia S.A.	`1.39ms` from Bogota, CO
181.59.190.1	AS10620 Telmex Colombia S.A.	`5.47ms` from Bogota, CO
181.49.250.1	AS14080 Telmex Colombia S.A.	`1.08ms` from Bogota, CO
200.119.114.193	AS19429 ETB - Colombia	`0.44ms` from Bogota, CO
181.54.220.1	AS10620 Telmex Colombia S.A.	`1.46ms` from Bogotá, CO
170.239.201.81	AS266362 NORTE TELECOM PROVEDOR DE INTERNET EIRELI	`15.82ms` from Brasilia, BR
91.177.175.33	AS5432 Proximus NV	`3.81ms` from Brussels, BE
190.176.101.129	AS22927 Telefonica de Argentina	`19.74ms` from Buenos Aires, AR
212.217.1.1	AS6713 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`4.48ms` from Casablanca, MA
61.157.125.33	AS4134 CHINANET-BACKBONE	`8.14ms` from Chengdu, CN
72.26.187.1	AS17306 JAB Wireless, INC.	`5.91ms` from Chicago, US
188.215.252.1	AS8926 Moldtelecom SA	`2.65ms` from Chisinau, MD
57.138.180.1	AS400662 Dobson Technologies - Transport and Telecom Solutions, LLC	`6.78ms` from Dallas, US
159.35.1.1	AS53604 University of Arkansas at Pine Bluff	`8.36ms` from Dallas, US
161.248.26.1	AS9430 Software Technology Parks of India,Block-IV	`6.51ms` from Delhi, IN
199.46.120.1	AS398479 Z4 Internet	`0.29ms` from Draper, US
4.184.93.65	AS8075 Microsoft Corporation	`0.27ms` from Frankfurt am Main, DE
130.59.26.1	AS559 SWITCH	`1.34ms` from Geneve, CH
120.197.214.65	AS9808 China Mobile Communications Group Co., Ltd.	`5.87ms` from Guangzhou, CN
222.86.52.1	AS4134 CHINANET-BACKBONE	`4.91ms` from Guiyang, CN
113.1.236.1	AS4837 CHINA UNICOM China169 Backbone	`10.33ms` from Harbin, CN

Traceroute

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

traceroute -a -n -q1 -f5 203.236.1.29

traceroute to 203.236.1.29 (203.236.1.29): 64 hops max, 52 byte packets

5 [AS3786] 211.234.118.93 1.339 ms

6 *

7 *

8 [AS3786] 1.208.151.109 2.474 ms

9 [AS3786] 211.170.12.2 25.939 ms

10 *

11 *

12 [AS9644] 113.217.255.13 3.244 ms

13 [AS9644] 203.236.1.29 3.108 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 14th 2025

What are IP address ranges?

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