203.229.128.0/17

AS4766 · Korea Telecom

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Summary

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

WHOIS Details

inetnum:        203.229.128.0 - 203.229.255.255
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:        hostmaster@nic.or.kr 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:         kornet_ip@kt.com
nic-hdl:        IA9-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 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:         kornet_ip@kt.com
nic-hdl:        IM9-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 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 203.229.0.0/16

Range	ASN	Company	Num of IPs
203.229.0.0/18	AS9689	SK Broadband Co Ltd	16,384
203.229.64.0/18	AS38095	SK Broadband Co Ltd	16,384
203.229.0.0/18	AS38096	SK Broadband Co Ltd	16,384
203.229.0.0/18	AS38097	SK Broadband Co Ltd	16,384
203.229.0.0/18	AS38103	SK Broadband Co Ltd	16,384

Hosted domains

There are 129 domain names hosted across 41 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.229.165.232	hyundaicorp.com	50
203.229.190.175	faustkorea.com	5
203.229.209.203	epbio.co.kr	3
203.229.175.89	sgic-test.com	3
203.229.176.194	nemc.or.kr	3
203.229.200.56	catholic.ac.kr	2
203.229.155.49	kunmt.org	2
203.229.154.17	mobilesafer.net	1
203.229.200.23	cuk.ac.kr	1
203.229.227.121	vga.co.kr	1
203.229.241.124	thekoreimpact.com	1
203.229.168.1	knia.or.kr	1
203.229.246.226	gcjoberp.com	1
203.229.144.130	jbam.co.kr	1
203.229.196.222	dsupp.co.kr	1
203.229.186.142	sjc-acs.com	1
203.229.183.27	mokky.kr	1
203.229.175.82	sgica.co.kr	1
203.229.204.149	haruhan.site	1
203.229.177.60	hdc.co.kr	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

7,626 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
203.229.206.200	AS55586 THE CATHOLIC UNIVERSITY OF KOREA SONGSIM	`1.77ms` from Incheon, KR
203.229.174.169	AS4766 Korea Telecom	`1.20ms` from Seoul, KR
203.229.145.30	AS4766 Korea Telecom	`1.30ms` from Seoul, KR
203.229.176.10	AS4766 Korea Telecom	`0.94ms` from Seoul, KR
203.229.146.254	AS4766 Korea Telecom	`1.26ms` from Seoul, KR
203.229.203.6	AS4766 Korea Telecom	`1.72ms` from Incheon, KR
203.229.141.3	AS10162 SNUH	`1.84ms` from Seoul, KR
203.229.181.86	AS4766 Korea Telecom	`1.01ms` from Seoul, KR
203.229.158.142	AS4766 Korea Telecom	`1.13ms` from Seoul, KR
203.229.149.149	AS4766 Korea Telecom	`0.95ms` from Seoul, KR
203.229.185.208	AS4766 Korea Telecom	`1.58ms` from Seoul, KR
203.229.172.97	AS4766 Korea Telecom	`1.03ms` from Seoul, KR
203.229.159.135	AS4766 Korea Telecom	`1.21ms` from Seoul, KR
203.229.167.126	AS4766 Korea Telecom	`1.13ms` from Seoul, KR
203.229.177.254	AS4766 Korea Telecom	`0.99ms` from Seoul, KR
203.229.186.80	AS4766 Korea Telecom	`1.21ms` from Seoul, KR
203.229.171.113	AS4766 Korea Telecom	`1.34ms` from Seoul, KR
203.229.137.13	AS10162 SNUH	`1.54ms` from Incheon, KR
203.229.204.39	AS4766 Korea Telecom	`1.81ms` from Incheon, KR
203.229.148.62	AS4766 Korea Telecom	`1.00ms` from Seoul, KR
203.229.144.254	AS4766 Korea Telecom	`0.98ms` from Seoul, KR
203.229.183.232	AS4766 Korea Telecom	`0.76ms` from Seoul, KR
203.229.147.150	AS4766 Korea Telecom	`1.10ms` from Seoul, KR
203.229.187.1	AS4766 Korea Telecom	`1.04ms` from Seoul, KR
203.229.164.170	AS4766 Korea Telecom	`1.32ms` 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
71.8.34.49	AS20115 Charter Communications LLC	`13.34ms` from Atlanta, US
66.118.101.17	AS23418 The Darien Telephone Co. Inc.	`9.22ms` from Atlanta, US
108.233.63.33	AS7018 AT&T Enterprises, LLC	`3.61ms` from Atlanta, US
114.249.173.1	AS4808 China Unicom Beijing Province Network	`3.17ms` from Beijing, CN
206.15.140.1	AS33292 SYNDEO LLC	`0.47ms` from Boston, US
73.218.85.1	AS7922 Comcast Cable Communications, LLC	`9.10ms` from Boston, US
89.155.97.241	AS2860 NOS COMUNICACOES, S.A.	`7.85ms` from Braga, PT
77.92.197.1	AS25424 INTERNEXT 2000	`2.44ms` from Bratislava, SK
186.137.253.1	AS7303 Telecom Argentina S.A.	`1.08ms` from Buenos Aires, AR
197.88.26.1	AS20011 Dimension Data	`2.32ms` from Cape Town, ZA
117.172.152.1	AS9808 China Mobile Communications Group Co., Ltd.	`9.80ms` from Chengdu, CN
24.247.175.1	AS20115 Charter Communications LLC	`12.24ms` from Chicago, US
50.83.98.1	AS30036 Mediacom Communications Corp	`6.80ms` from Chicago, US
73.176.212.1	AS7922 Comcast Cable Communications, LLC	`7.49ms` from Chicago, US
211.158.227.1	AS4837 CHINA UNICOM China169 Backbone	`1.59ms` from Chongqing, CN
78.71.193.65	AS3301 Telia Company AB	`1.27ms` from Copenhagen, DK
187.7.184.129	AS8167 V tal	`0.28ms` from Curitiba, BR
47.221.128.1	AS19108 Optimum	`7.77ms` from Dallas, US
5.179.71.177	AS6830 Liberty Global Europe Holding B.V.	`6.92ms` from Dublin, IE
183.25.64.65	AS4134 CHINANET-BACKBONE	`3.79ms` from Guangzhou, CN
193.185.150.129	AS719 Elisa Oyj	`1.18ms` from Helsinki, FI
73.206.32.1	AS7922 Comcast Cable Communications, LLC	`3.88ms` from Houston, US
49.89.35.129	AS4134 CHINANET-BACKBONE	`7.31ms` from Huai'an, CN
1.218.83.65	AS3786 LG DACOM Corporation	`1.76ms` from Incheon, KR
222.239.1.65	AS9318 SK Broadband Co Ltd	`5.99ms` from Incheon, KR

Traceroute

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

traceroute -a -n -q1 -f3 -m7 203.229.140.31

traceroute to 203.229.140.31 (203.229.140.31): 7 hops max, 52 byte packets

3 [AS174] 130.117.1.150 18.274 ms

4 [AS174] 154.54.94.45 79.355 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Derby, GB

On February 7th 2026

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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