203.243.128.0/21

AS9848 · SEJONG NETWORKS

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Summary

Country	South Korea
Domain	sejongnetworks.com
ASN	AS9848
Parent Range	203.243.128.0/17
Registry	APNIC
ID	SHINBIRO

WHOIS Details

inetnum:        203.243.128.0 - 203.243.255.255
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:  2024-09-10T08:50:06Z
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 203.243.128.0/21

Range	ASN	Company	Num of IPs
203.243.128.0/17	AS23584	SEJONG NETWORKS	32,768
203.243.128.0/17	AS9848	SEJONG NETWORKS	32,768
203.243.128.0/17	AS141167	SEJONG NETWORKS	32,768

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

Read more

Pingable IPs

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

IP Address	ASN	Details
203.243.134.62	AS9848 SEJONG NETWORKS	`0.54ms` from Seoul, KR
203.243.131.2	AS9848 SEJONG NETWORKS	`1.00ms` from Seoul, KR
203.243.129.15	AS9848 SEJONG NETWORKS	`35.58ms` from Seoul, KR
203.243.130.241	AS9848 SEJONG NETWORKS	`0.73ms` 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
193.42.108.37	AS60144 3W Infra B.V.	`0.56ms` from Amsterdam, NL
198.93.36.53	AS6352 E*TRADE Financial Corporation	`2.24ms` from Ashburn, US
34.216.163.37	AS16509 Amazon.com, Inc.	`0.17ms` from Boardman, US
181.79.36.229	AS18747 IFX Corporation	`0.48ms` from Bogotá, CO
70.73.14.53	AS6327 Shaw Communications	`4.05ms` from Calgary, CA
175.15.183.197	AS4134 CHINANET-BACKBONE	`5.54ms` from Chenzhou, CN
3.13.114.85	AS16509 Amazon.com, Inc.	`0.15ms` from Columbus, US
59.144.38.229	AS9498 BHARTI Airtel Ltd.	`0.92ms` from Delhi, IN
124.112.109.165	AS4134 CHINANET-BACKBONE	`8.77ms` from Huai'an, CN
86.133.140.181	AS2856 British Telecommunications PLC	`5.24ms` from London, GB
81.103.110.21	AS5089 Virgin Media Limited	`10.52ms` from London, GB
62.252.236.5	AS5089 Virgin Media Limited	`3.87ms` from London, GB
172.126.94.133	AS7018 AT&T Enterprises, LLC	`4.09ms` from Los Angeles, US
90.1.109.5	AS3215 Orange S.A.	`8.95ms` from Marseille, FR
194.85.126.165	AS8848 JSC Center of Financial Technologies	`1.74ms` from Novosibirsk, RU
126.214.74.21	AS17676 SoftBank Corp.	`4.16ms` from Osaka, JP
72.14.179.5	AS63949 Akamai Connected Cloud	`0.15ms` from Richardson, US
50.125.234.181	AS20055 Wholesail networks LLC	`1.15ms` from Seattle, US
184.69.129.133	AS6327 Shaw Communications	`4.18ms` from Seattle, US
152.32.230.21	AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED	`0.49ms` from Taipei, TW
196.229.198.117	AS37492 Orange Tunisie	`13.88ms` from Tunis, TN
128.76.33.53	AS3292 TDC Holding A/S	`7.50ms` from Tønder, DK
209.41.186.149	AS20021 Ntirety, Inc.	`4.30ms` from Ashburn, US
89.194.104.53	AS8011 MongoDB, Inc.	`0.47ms` from Ashburn, US
18.172.120.85	AS16509 Amazon.com, Inc.	`0.08ms` from Chicago, US

Traceroute

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

traceroute -a -n -q1 203.243.131.2

traceroute to 203.243.131.2 (203.243.131.2): 64 hops max, 52 byte packets

1 [AS10843] 216.117.191.253 47.384 ms

2 *

3 [AS3549] 67.17.70.46 15.094 ms

4 *

5 *

6 [AS3356] 4.68.37.254 16.089 ms

7 [AS58453] 223.120.6.81 16.243 ms

8 [AS58453] 223.120.6.61 79.321 ms

9 [AS58453] 223.120.22.78 202.48 ms

10 [AS58453] 223.119.81.246 202.892 ms

11 [AS9848] 211.239.202.6 208.165 ms

12 [AS9848] 211.239.202.146 203.737 ms

13 [AS9848] 203.231.88.66 205.03 ms

14 *

15 [AS9848] 203.243.131.2 200.378 ms

Measurement taken from

IPinfo ProbeNet in Fayetteville, US

On December 28th 2025

What are IP address ranges?

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