203.245.0.0/18

AS4766 · Korea Telecom

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Summary

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

WHOIS Details

inetnum:        203.245.32.0 - 203.245.63.255
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 203.245.0.0/16

Range	ASN	Company	Num of IPs
203.245.128.0/17	AS18305	POSCO Engineering Construction Co.,Ltd	32,768
203.245.64.0/18	AS3786	GS-Caltex Oil Corp.	16,384

Hosted domains

There are 101,324 domain names hosted across 900 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.245.12.99	showdang.kr	4198
203.245.12.102	kratos.kr	4075
203.245.12.103	munito.co.kr	4002
203.245.12.104	ndns.shop	3959
203.245.12.107	uzumarket.co.kr	3947
203.245.12.105	naturalgoodthings.com	3946
203.245.12.111	powerzone.co.kr	3934
203.245.12.106	8division.com	3932
203.245.12.116	dalsim.kr	3918
203.245.12.108	darkflash.co.kr	3910
203.245.12.109	comics-art.co.kr	3905
203.245.12.112	oname.kr	3895
203.245.12.118	kratos.kr	3886
203.245.12.110	autowash.co.kr	3884
203.245.12.101	autobritedirect.co.kr	3842
203.245.12.113	sevenselah.com	3790
203.245.12.114	oname.kr	3785
203.245.12.100	gnmart.co.kr	3776
203.245.12.122	themedicube.co.kr	3773
203.245.12.120	wellica.kr	3769

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

2,696 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
203.245.37.56	AS4766 Korea Telecom	`1.47ms` from Seoul, KR
203.245.9.163	AS4766 Korea Telecom	`0.93ms` from Seoul, KR
203.245.20.119	AS4766 Korea Telecom	`0.85ms` from Seoul, KR
203.245.1.21	AS4766 Korea Telecom	`0.98ms` from Seoul, KR
203.245.29.3	AS4766 Korea Telecom	`0.92ms` from Seoul, KR
203.245.21.209	AS4766 Korea Telecom	`1.15ms` from Seoul, KR
203.245.8.104	AS4766 Korea Telecom	`1.16ms` from Seoul, KR
203.245.13.123	AS4766 Korea Telecom	`0.86ms` from Seoul, KR
203.245.26.143	AS4766 Korea Telecom	`0.77ms` from Seoul, KR
203.245.0.103	AS4766 Korea Telecom	`0.97ms` from Seoul, KR
203.245.30.3	AS4766 Korea Telecom	`0.94ms` from Seoul, KR
203.245.5.37	AS4766 Korea Telecom	`0.79ms` from Seoul, KR
203.245.27.105	AS4766 Korea Telecom	`0.91ms` from Seoul, KR
203.245.10.254	AS4766 Korea Telecom	`0.79ms` from Seoul, KR
203.245.22.160	AS4766 Korea Telecom	`1.04ms` from Seoul, KR
203.245.23.204	AS4766 Korea Telecom	`0.80ms` from Seoul, KR
203.245.6.117	AS4766 Korea Telecom	`0.82ms` from Seoul, KR
203.245.28.137	AS4766 Korea Telecom	`0.90ms` from Seoul, KR
203.245.44.217	AS4766 Korea Telecom	`0.81ms` from Seoul, KR
203.245.42.94	AS4766 Korea Telecom	`1.05ms` from Seoul, KR
203.245.15.9	AS4766 Korea Telecom	`1.48ms` from Seoul, KR
203.245.18.194	AS4766 Korea Telecom	`0.85ms` from Seoul, KR
203.245.33.193	AS4766 Korea Telecom	`1.36ms` from Seoul, KR
203.245.2.85	AS4766 Korea Telecom	`1.00ms` from Seoul, KR
203.245.24.32	AS4766 Korea Telecom	`0.80ms` 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
110.170.180.226	AS7470 TRUE INTERNET Co.,Ltd.	`2.94ms` from Bangkok, TH
54.214.143.210	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
83.134.197.2	AS5432 Proximus NV	`1.30ms` from Brussels, BE
45.139.222.130	AS209711 MUV Bilisim ve Telekomunikasyon Hizmetleri Ltd. Sti.	`0.22ms` from Bursa, TR
76.190.198.242	AS10796 Charter Communications Inc	`11.22ms` from Columbus, US
97.77.253.194	AS11427 Charter Communications Inc	`3.12ms` from Dallas, US
129.162.248.2	AS6481 Southwest Research Institute	`9.09ms` from Dallas, US
20.112.222.2	AS8075 Microsoft Corporation	`0.33ms` from Des Moines, US
84.153.109.130	AS3320 Deutsche Telekom AG	`2.29ms` from Duesseldorf, DE
217.80.243.226	AS3320 Deutsche Telekom AG	`4.85ms` from Frankfurt am Main, DE
78.51.23.114	AS6805 Telefonica Germany GmbH & Co.OHG	`2.29ms` from Frankfurt am Main, DE
2.219.134.66	AS5607 Sky UK Limited	`7.18ms` from London, GB
90.242.125.34	AS5378 Vodafone Limited	`5.43ms` from Manchester, GB
188.164.182.82	AS43567 UG-TELECOM Ltd.	`1.75ms` from Moscow, RU
146.12.161.2	AS15206 TVEC Connect, LLC	`6.55ms` from Murfreesboro, US
194.146.246.50	AS2116 GLOBALCONNECT AS	`2.31ms` from Sandefjord, NO
59.15.243.194	AS4766 Korea Telecom	`1.21ms` from Seoul, KR
175.127.177.2	AS9318 SK Broadband Co Ltd	`1.25ms` from Seoul, KR
43.212.145.146	AS16509 Amazon.com, Inc.	`0.96ms` from Taipei, TW
46.158.174.18	AS12389 PJSC Rostelecom	`16.37ms` from Tbilisi, GE
199.160.154.18	AS6079 RCN	`1.63ms` from Ashburn, US
222.222.40.2	AS4134 CHINANET-BACKBONE	`7.86ms` from Beijing, CN
210.12.192.242	AS4808 China Unicom Beijing Province Network	`2.73ms` from Beijing, CN
117.133.80.146	AS56048 China Mobile Communicaitons Corporation	`2.67ms` from Beijing, CN
117.196.241.162	AS9829 National Internet Backbone	`4.19ms` from Chennai, IN

Traceroute

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

traceroute -a -n -q1 -f5 203.245.20.101

traceroute to 203.245.20.101 (203.245.20.101): 64 hops max, 52 byte packets

5 [AS4766] 112.191.117.27 2.179 ms

6 [AS4766] 112.189.27.235 2.019 ms

7 *

8 [AS4766] 124.198.4.217 2.039 ms

9 [AS4766] 124.198.8.25 2.184 ms

10 *

11 *

12 *

13 [AS4766] 203.245.20.101 4.362 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 20th 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.

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