203.243.15.0/24

AS23575  ·  SK Broadband Co Ltd

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Summary

Country South Korea
Domain kt.com
ASN AS23575
Registry APNIC
ID KORNET

WHOIS Details

inetnum:        203.243.12.0 - 203.243.15.255
netname:        KORNET
descr:          Korea Telecom
country:        KR
admin-c:        IM667-AP
tech-c:         IM667-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2025-11-03T08:14:05Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
e-mail:         irt@nic.or.kr
abuse-mailbox:  irt@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        irt@nic.or.kr was validated on 2020-04-09
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-09-04T01:00:01Z
source:         APNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IM667-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2017-03-28T06:37:04Z
source:         APNIC

inetnum:        203.243.12.0 - 203.243.15.255
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
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 203.243.0.0/16

Range ASN Company Num of IPs
203.243.128.0/17 AS141167 SEJONG NETWORKS 32,768
203.243.128.0/17 AS23584 SEJONG NETWORKS 32,768
203.243.128.0/17 AS9848 SEJONG NETWORKS 32,768
203.243.140.0/22 AS23584 HCN-Pusan 1,024
203.243.148.0/22 AS23584 HCN-Pusan 1,024
203.243.152.0/22 AS23584 HCN-Pusan 1,024
203.243.156.0/24 AS23584 HCN-Pusan 256
203.243.220.0/24 AS23584 HCN-Pusan 256
203.243.221.0/24 AS23584 HCN-Pusan 256
203.243.237.0/24 AS18300 Korea Electric Power Corporation 256
203.243.39.0/24 AS4766 Korea Telecom 256

Hosted domains

There are no domains currently hosted on this ASN.

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

Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
34.221.98.72 AS16509 Amazon.com, Inc. 0.16ms from Boardman, US
181.87.219.168 AS7303 Telecom Argentina S.A. 1.63ms from Buenos Aires, AR
186.153.18.168 AS7303 Telecom Argentina S.A. 1.70ms from Buenos Aires, AR
51.89.168.232 AS16276 OVH SAS 0.08ms from Erith, GB
18.159.171.72 AS16509 Amazon.com, Inc. 0.14ms from Frankfurt am Main, DE
101.71.203.120 AS4837 CHINA UNICOM China169 Backbone 4.30ms from Hangzhou, CN
2.136.64.248 AS3352 TELEFONICA DE ESPANA S.A.U. 1.77ms from Madrid, ES
185.71.140.104 AS211057 Astra for Telecommunication and IT Services 5.17ms from Rosh Ha‘Ayin, IL
84.212.250.184 AS25400 Telia Norge AS 8.06ms from Sandefjord, NO
210.220.2.168 AS9316 DACOM-PUBNETPLUS 1.89ms from Seoul, KR
101.31.170.8 AS4837 CHINA UNICOM China169 Backbone 8.79ms from Beijing, CN
16.145.139.200 AS16509 Amazon.com, Inc. 0.16ms from Boardman, US
205.143.129.8 AS7029 Windstream Communications LLC 1.23ms from Chicago, US
103.181.73.8 AS149497 Sonargaon Supernet 0.65ms from Dhaka, BD
219.137.176.168 AS4134 CHINANET-BACKBONE 3.85ms from Guangzhou, CN
166.219.248.232 AS20057 AT&T Enterprises, LLC 11.33ms from Houston, US
195.219.17.104 AS6453 TATA COMMUNICATIONS (AMERICA) INC 0.29ms from London, GB
109.173.115.248 AS42610 PJSC Rostelecom 1.09ms from Moscow, RU
23.216.164.232 AS16625 Akamai Technologies, Inc. 0.14ms from Osasco, BR
186.10.181.88 AS27651 ENTEL CHILE S.A. 2.22ms from Santiago, CL
203.245.10.232 AS4766 Korea Telecom 0.89ms from Seoul, KR
174.95.87.184 AS577 Bell Canada 1.53ms from Toronto, CA
98.233.26.248 AS7922 Comcast Cable Communications, LLC 7.13ms from Ashburn, US
219.89.120.232 AS4771 Spark New Zealand Trading Ltd. 0.99ms from Auckland, NZ
109.131.164.216 AS5432 Proximus NV 1.72ms from Brussels, BE

Traceroute

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

$
traceroute -a -n -q1 -m17 203.243.15.47
traceroute to 203.243.15.47 (203.243.15.47): 17 hops max, 52 byte packets
1 [AS270353] 200.9.155.1 2.235 ms
2 *
4 [AS3356] 8.243.32.61 8.185 ms
5 *
6 [AS3356] 4.68.37.206 187.627 ms
7 [AS4766] 112.174.88.249 330.467 ms
8 [AS4766] 112.174.86.141 329.294 ms
9 [AS4766] 112.174.94.70 337.888 ms
10 [AS4766] 203.234.255.234 325.112 ms
11 *
12 *
13 *
14 [AS23575] 125.61.60.5 334.382 ms
15 *
16 *
17 *
Measurement taken from IPinfo ProbeNet in Muriae, BR
On

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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