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 127 domain names hosted across 39 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	haksanpub.kr	5
203.229.209.203	hcpharm.co.kr	3
203.229.175.89	sgic-test.com	3
203.229.176.194	e-gen.or.kr	3
203.229.200.56	cuk.ac.kr	2
203.229.155.49	kunmt.org	2
203.229.227.121	vga.co.kr	1
203.229.168.2	knia.or.kr	1
203.229.183.27	mokky.kr	1
203.229.188.9	platinum-s.co.kr	1
203.229.246.226	gcjoberp.com	1
203.229.154.17	mobilesafer.net	1
203.229.186.142	sjc-acs.com	1
203.229.238.2	woongjin.net	1
203.229.220.235	eggproduct.co.kr	1
203.229.168.79	e-insmarket.or.kr	1
203.229.177.61	handokit.co.kr	1
203.229.175.82	sgica.co.kr	1
203.229.241.124	thekoreimpact.com	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

7,627 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
203.229.201.231	AS4766 Korea Telecom	`1.78ms` from Incheon, KR
203.229.209.139	AS4766 Korea Telecom	`0.74ms` from Incheon, KR
203.229.206.8	AS55586 THE CATHOLIC UNIVERSITY OF KOREA SONGSIM	`1.84ms` from Incheon, KR
203.229.159.151	AS4766 Korea Telecom	`1.30ms` from Seoul, KR
203.229.227.33	AS4766 Korea Telecom	`0.99ms` from Seoul, KR
203.229.197.135	AS4766 Korea Telecom	`2.25ms` from Seoul, KR
203.229.234.243	AS4766 Korea Telecom	`1.46ms` from Seoul, KR
203.229.212.254	AS4766 Korea Telecom	`1.21ms` from Seoul, KR
203.229.155.25	AS4766 Korea Telecom	`1.18ms` from Seoul, KR
203.229.177.254	AS4766 Korea Telecom	`1.00ms` from Seoul, KR
203.229.183.232	AS4766 Korea Telecom	`0.79ms` from Seoul, KR
203.229.229.92	AS4766 Korea Telecom	`1.57ms` from Seoul, KR
203.229.230.253	AS4766 Korea Telecom	`1.24ms` from Incheon, KR
203.229.195.251	AS4766 Korea Telecom	`2.59ms` from Seoul, KR
203.229.204.204	AS4766 Korea Telecom	`1.92ms` from Incheon, KR
203.229.225.150	AS4766 Korea Telecom	`0.80ms` from Seoul, KR
203.229.182.159	AS4766 Korea Telecom	`1.15ms` from Seoul, KR
203.229.213.205	AS4766 Korea Telecom	`1.22ms` from Seoul, KR
203.229.152.18	AS4766 Korea Telecom	`1.05ms` from Seoul, KR
203.229.247.83	AS4766 Korea Telecom	`0.69ms` from Seoul, KR
203.229.246.222	AS4766 Korea Telecom	`1.25ms` from Seoul, KR
203.229.220.134	AS4766 Korea Telecom	`1.08ms` from Seoul, KR
203.229.176.10	AS4766 Korea Telecom	`0.94ms` from Seoul, KR
203.229.147.57	AS4766 Korea Telecom	`1.20ms` from Seoul, KR
203.229.163.126	AS4766 Korea Telecom	`1.19ms` 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
62.194.250.1	AS33915 Vodafone Libertel B.V.	`4.73ms` from Amsterdam, NL
213.93.170.1	AS33915 Vodafone Libertel B.V.	`6.02ms` from Amsterdam, NL
75.208.244.225	AS6167 Verizon Business	`16.41ms` from Atlanta, US
120.46.253.33	AS55990 Huawei Cloud Service data center	`11.85ms` from Beijing, CN
73.186.152.1	AS7922 Comcast Cable Communications, LLC	`1.60ms` from Boston, US
109.135.44.209	AS5432 Proximus NV	`1.40ms` from Brussels, BE
197.51.123.1	AS8452 TE-AS	`8.39ms` from Cairo, EG
102.47.192.1	AS8452 TE-AS	`4.60ms` from Cairo, EG
24.64.148.1	AS6327 Shaw Communications	`1.64ms` from Calgary, CA
24.93.67.193	AS11426 Charter Communications Inc	`1.01ms` from Charlotte, US
171.215.200.1	AS4134 CHINANET-BACKBONE	`6.21ms` from Chengdu, CN
109.255.67.1	AS6830 Liberty Global Europe Holding B.V.	`1.75ms` from Dublin, IE
185.177.2.33	AS51346 Opened Joint Stock Company "Tojiktelecom"	`0.22ms` from Dushanbe, TJ
185.215.196.1	AS61207 Hostek AB	`2.37ms` from Falkenberg, SE
18.193.105.161	AS16509 Amazon.com, Inc.	`0.46ms` from Frankfurt am Main, DE
31.57.63.1	AS56971 AS56971 Cloud	`0.24ms` from Fremont, US
80.254.242.1	AS44769 Bosnet Aktiebolag	`3.97ms` from Goeteborg, SE
193.185.150.129	AS719 Elisa Oyj	`1.16ms` from Helsinki, FI
203.90.48.1	AS18310 SK Broadband Co Ltd	`1.42ms` from Incheon, KR
196.24.71.1	AS2018 TENET (The UNINET Project)	`0.57ms` from Johannesburg, ZA
98.175.193.1	AS22773 Cox Communications Inc.	`4.27ms` from Kansas City, US
121.123.44.49	AS9534 Binariang Berhad	`7.05ms` from Kuala Lumpur, MY
174.67.230.1	AS22773 Cox Communications Inc.	`2.66ms` from Los Angeles, US
70.187.254.1	AS22773 Cox Communications Inc.	`1.88ms` from Los Angeles, US
85.171.60.1	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`5.38ms` from Lyon, FR

Traceroute

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

traceroute -a -n -q1 203.229.153.157

traceroute to 203.229.153.157 (203.229.153.157): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.45 0.093 ms

2 [AS4766] 218.145.32.254 1.08 ms

3 *

4 *

5 *

6 *

7 [AS4766] 203.229.153.157 1.145 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On January 19th 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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