203.123.202.0/23

AS17597 · SK Broadband Co Ltd

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Summary

Country	South Korea
Domain	skbroadband.com
ASN	AS17597
Parent Range	203.123.192.0/19
Registry	APNIC
ID	TBROAD

WHOIS Details

inetnum:        203.123.192.0 - 203.123.223.255
netname:        broadNnet
descr:          SK Broadband Co Ltd
country:        KR
admin-c:        IM670-AP
tech-c:         IM670-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2020-12-29T05:46:15Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        Jeollanam-do Naju-si Jinheung-gil
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:  2021-06-15T06:21:49Z
source:         APNIC

person:         IP Manager
address:        Seoul Jung-gu Toegye-ro 24
country:        KR
phone:          +82-80-828-2106
e-mail:         ip-adm@skbroadband.com
nic-hdl:        IM670-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2021-10-05T05:20:03Z
source:         APNIC

inetnum:        203.123.192.0 - 203.123.223.255
netname:        broadNnet-KR
descr:          SK Broadband Co Ltd
country:        KR
admin-c:        IM12-KR
tech-c:         IM12-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.
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Seoul Jung-gu Toegye-ro 24
address:        SK Namsan Green Bldg.
country:        KR
phone:          +82-80-828-2106
e-mail:         ip-adm@skbroadband.com
nic-hdl:        IM12-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

Overlapping Ranges

BGP prefixes that contain 203.123.202.0/23

Range	ASN	Company	Num of IPs
203.123.192.0/19	AS17597	SK Broadband Co Ltd	8,192

Nearby Ranges

BGP prefixes that overlap with 203.123.0.0/16

Range	ASN	Company	Num of IPs
203.123.128.0/18	AS4637	Telstra International Limited	16,384
203.123.96.0/19	AS38195	SUPERLOOP (AUSTRALIA) PTY LTD	8,192
203.123.0.0/19	AS17547	M1 NET LTD	8,192
203.123.192.0/19	AS17597	SK Broadband Co Ltd	8,192
203.123.80.0/20	AS136907	HUAWEI INTERNATIONAL PTE. LTD.	4,096
203.123.48.0/22	AS37989	Main Network for DCS1	1,024
203.123.225.0/24	AS4855	PT. Samudera Indonesia - Agency Division	256
203.123.54.0/24	AS140982	Broadside, India DC	256
203.123.53.0/24	AS153305	Broadisde India	256
203.123.35.0/24	AS10029	Shyam Spectra Pvt Ltd	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

Read more

Pingable IPs

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

IP Address	ASN	Details
203.123.203.87	AS17597 SK Broadband Co Ltd	`2.97ms` from Seoul, KR
203.123.202.125	AS17597 SK Broadband Co Ltd	`2.48ms` 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
102.191.55.23	AS24835 Vodafone Data	`4.61ms` from Cairo, EG
197.58.97.39	AS8452 TE-AS	`4.05ms` from Cairo, EG
102.40.117.87	AS8452 TE-AS	`3.83ms` from Cairo, EG
64.99.146.247	AS32133 Ting Fiber Inc.	`5.25ms` from Charlotte, US
65.75.208.23	AS50131 Spartan Host Ltd	`0.19ms` from Dallas, US
194.156.210.231	AS209081 HUGO BOSS AG	`4.28ms` from Frankfurt am Main, DE
187.195.228.231	AS8151 UNINET	`1.92ms` from Monterrey, MX
125.135.149.7	AS4766 Korea Telecom	`7.04ms` from Seoul, KR
112.181.67.151	AS4766 Korea Telecom	`1.67ms` from Seoul, KR
67.186.16.247	AS7922 Comcast Cable Communications, LLC	`11.80ms` from Ashburn, US
134.164.127.151	AS6009 United States Department of Defense (DoD)	`0.63ms` from Atlanta, US
86.180.197.23	AS2856 British Telecommunications PLC	`2.02ms` from Erith, GB
121.198.188.119	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.50ms` from Hangzhou, CN
67.10.112.7	AS11427 Charter Communications Inc	`8.64ms` from Houston, US
201.236.197.167	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`10.14ms` from Medellin, CO
5.94.199.103	AS30722 Fastweb SpA	`7.98ms` from Milan, IT
167.56.126.167	AS6057 Administracion Nacional de Telecomunicaciones	`1.73ms` from Montevideo, UY
176.110.228.167	AS31028 Novoe Kabelnoe Television Ltd.	`10.15ms` from Moscow, RU
112.244.33.87	AS4837 CHINA UNICOM China169 Backbone	`5.06ms` from Qingdao, CN
14.128.147.247	AS4766 Korea Telecom	`0.80ms` from Seoul, KR
44.223.216.183	AS14618 Amazon.com, Inc.	`0.52ms` from Ashburn, US
73.147.27.39	AS7922 Comcast Cable Communications, LLC	`6.17ms` from Ashburn, US
54.189.45.23	AS16509 Amazon.com, Inc.	`0.21ms` from Boardman, US
125.64.43.199	AS38283 CHINANET SiChuan Telecom Internet Data Center	`1.16ms` from Chengdu, CN
50.27.67.87	AS19108 Optimum	`14.87ms` from Dallas, US

Traceroute

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

traceroute -a -n -q1 -f3 203.123.202.125

traceroute to 203.123.202.125 (203.123.202.125): 64 hops max, 52 byte packets

3 [AS6939] 184.105.250.41 0.797 ms

4 *

5 *

6 *

7 [AS6939] 65.19.129.150 24.672 ms

8 *

9 *

10 *

11 *

12 *

13 *

14 *

15 *

16 [AS17597] 203.123.202.125 185.228 ms

Measurement taken from

IPinfo ProbeNet in Denver, US

On March 13th 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.

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