203.231.51.0/24

AS17837 · NHN KCP Corp.

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Summary

Country	South Korea
Domain	sejongnetworks.com
ASN	AS17837
Parent Range	203.231.0.0/16
Registry	APNIC
ID	SHINBIRO

WHOIS Details

inetnum:        203.231.0.0 - 203.231.255.255
netname:        SEJONG
descr:          SEJONG NETWORKS
country:        KR
admin-c:        IM686-AP
tech-c:         IM686-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2024-09-10T08:50:05Z
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:        12 Gwacheon-daero 7-gil, Gwacheon-si, Gyeonggi-do
country:        KR
phone:          +82-2-1688-2200
e-mail:         ip@sejongnetworks.com
nic-hdl:        IM686-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2024-09-10T08:42:02Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 203.231.51.0/24

Range	ASN	Company	Num of IPs
203.231.0.0/16	AS9973	SEJONG NETWORKS	65,536
203.231.0.0/16	AS17837	SEJONG NETWORKS	65,536
203.231.0.0/16	AS17881	SEJONG NETWORKS	65,536
203.231.0.0/16	AS18300	SEJONG NETWORKS	65,536
203.231.0.0/16	AS18305	SEJONG NETWORKS	65,536
203.231.0.0/16	AS18309	SEJONG NETWORKS	65,536
203.231.0.0/16	AS23593	SEJONG NETWORKS	65,536
203.231.0.0/16	AS3608	SEJONG NETWORKS	65,536
203.231.0.0/16	AS38676	SEJONG NETWORKS	65,536
203.231.0.0/16	AS9684	SEJONG NETWORKS	65,536
203.231.0.0/16	AS9848	SEJONG NETWORKS	65,536
203.231.0.0/16	AS131866	SEJONG NETWORKS	65,536

Nearby Ranges

BGP prefixes that overlap with 203.231.0.0/16

Range	ASN	Company	Num of IPs
203.231.0.0/16	AS131866	SEJONG NETWORKS	65,536
203.231.0.0/16	AS17837	SEJONG NETWORKS	65,536
203.231.0.0/16	AS17881	SEJONG NETWORKS	65,536
203.231.0.0/16	AS18300	SEJONG NETWORKS	65,536
203.231.0.0/16	AS18305	SEJONG NETWORKS	65,536
203.231.0.0/16	AS18309	SEJONG NETWORKS	65,536
203.231.0.0/16	AS23593	SEJONG NETWORKS	65,536
203.231.0.0/16	AS3608	SEJONG NETWORKS	65,536
203.231.0.0/16	AS38676	SEJONG NETWORKS	65,536
203.231.0.0/16	AS9684	SEJONG NETWORKS	65,536
203.231.0.0/16	AS9848	SEJONG NETWORKS	65,536
203.231.0.0/16	AS9973	SEJONG NETWORKS	65,536

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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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
86.108.188.152	AS16135 Turkcell A.S.	`2.82ms` from Ankara, TR
34.134.115.136	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
59.178.21.216	AS9829 National Internet Backbone	`4.26ms` from Delhi, IN
79.219.16.200	AS3320 Deutsche Telekom AG	`9.17ms` from Frankfurt am Main, DE
79.250.127.168	AS3320 Deutsche Telekom AG	`8.13ms` from Frankfurt am Main, DE
125.166.178.200	AS7713 PT Telekomunikasi Indonesia	`1.79ms` from Jakarta, ID
79.158.85.232	AS3352 TELEFONICA DE ESPANA S.A.U.	`10.43ms` from Madrid, ES
88.18.47.56	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.48ms` from Madrid, ES
15.158.132.24	AS16509 Amazon.com, Inc.	`0.32ms` from Marseille, FR
117.178.222.232	AS56045 China Mobile communications corporation	`4.68ms` from Nanchang, CN
24.189.223.168	AS6128 Cablevision Systems Corp.	`9.11ms` from New York City, US
115.162.156.136	AS2527 Sony Network Communications Inc.	`5.21ms` from Osaka, JP
168.195.58.88	AS12956 TELXIUS Cable	`0.68ms` from Osasco, BR
78.202.217.72	AS12322 Free SAS	`6.94ms` from Paris, FR
91.165.143.40	AS12322 Free SAS	`17.96ms` from Paris, FR
208.75.158.168	AS16567 Netrix LLC	`2.31ms` from Philadelphia, US
186.4.9.120	AS262197 MILLICOM CABLE COSTA RICA S.A.	`5.16ms` from San Pedro, CR
187.194.208.120	AS8151 UNINET	`1.01ms` from Santiago de Queretaro, MX
118.41.227.168	AS4766 Korea Telecom	`4.92ms` from Seoul, KR
14.58.252.120	AS4766 Korea Telecom	`5.54ms` from Seoul, KR
119.23.2.200	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.95ms` from Shenzhen, CN
47.94.223.120	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`2.13ms` from Beijing, CN
20.221.152.56	AS8075 Microsoft Corporation	`0.32ms` from Boydton, US
86.127.90.56	AS8708 DIGI ROMANIA S.A.	`4.56ms` from Bucharest, RO
196.118.74.216	AS36925 MEDITELECOM	`2.46ms` from Casablanca, MA

Traceroute

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

traceroute -a -n -q1 -f5 -m12 203.231.51.216

traceroute to 203.231.51.216 (203.231.51.216): 12 hops max, 52 byte packets

5 [] 69.194.166.230 60.062 ms

6 [] 203.86.105.14 37.58 ms

7 [AS9848] 211.239.201.162 36.71 ms

8 [AS9848] 211.239.201.26 51.445 ms

9 [AS9848] 203.231.90.214 37.903 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On November 14th 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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