203.240.128.0/19

AS4670 · Shinbiro

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Summary

Country	South Korea
Domain	sejongnetworks.com
ASN	AS4670
Registry	APNIC
ID	SHINBIRO

WHOIS Details

inetnum:        203.240.128.0 - 203.240.159.255
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 are contained by 203.240.128.0/19

Range	ASN	Company	Num of IPs
203.240.149.0/24	AS45977	Canon Korea Business Solution	256
203.240.128.0/24	AS9645	HYUNDAI International Merchant Bank	256
203.240.132.0/24	AS9848	SEJONG NETWORKS	256
203.240.148.0/24	AS9848	SEJONG NETWORKS	256
203.240.159.0/24	AS9980	Hyundai Information Technology Co. Ltd.	256

Nearby Ranges

BGP prefixes that overlap with 203.240.0.0/16

Range	ASN	Company	Num of IPs
203.240.192.0/18	AS4670	SEJONG NETWORKS	16,384
203.240.238.0/23	AS4670	SEJONG NETWORKS	512
203.240.209.0/24	AS4670	SEJONG NETWORKS	256
203.240.221.0/24	AS4670	SEJONG NETWORKS	256
203.240.222.0/24	AS4670	SEJONG NETWORKS	256
203.240.234.0/24	AS4670	SEJONG NETWORKS	256
203.240.235.0/24	AS4670	SEJONG NETWORKS	256
203.240.236.0/24	AS4670	SEJONG NETWORKS	256
203.240.253.0/24	AS4670	SEJONG NETWORKS	256
203.240.128.0/24	AS9645	HYUNDAI International Merchant Bank	256
203.240.132.0/24	AS9848	SEJONG NETWORKS	256
203.240.148.0/24	AS9848	SEJONG NETWORKS	256
203.240.244.0/24	AS9848	SEJONG NETWORKS	256
203.240.191.0/24	AS3786	Korea Internet Security Agency	256
203.240.159.0/24	AS9980	Hyundai Information Technology Co. Ltd.	256
203.240.149.0/24	AS45977	Canon Korea Business Solution	256
203.240.193.0/24	AS4670	SEJONG NETWORKS	256
203.240.208.0/24	AS4670	SEJONG NETWORKS	256

Hosted domains

There are 14 domain names hosted across 5 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.240.129.119	sejongbill.com	1
203.240.131.68	onsebill.com	1

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
203.240.129.95	AS4670 Shinbiro	`1.50ms` from Seoul, KR
203.240.128.111	AS9645 NEXT SECURITIES CORPORATION	`1.13ms` from Incheon, KR
203.240.132.68	AS9848 SEJONG NETWORKS	`0.99ms` from Seoul, KR
203.240.150.251	AS45977 CANON KOREA INC.	`2.04ms` from Seoul, KR
203.240.135.210	AS3786 LG DACOM Corporation	`6.71ms` from Incheon, KR
203.240.131.68	AS4670 Shinbiro	`1.57ms` from Seoul, KR
203.240.141.210	AS4670 Shinbiro	`2.74ms` from Seoul, KR
203.240.151.252	AS45977 CANON KOREA INC.	`1.98ms` from Seoul, KR
203.240.138.9	AS4670 Shinbiro	`3.29ms` from Seoul, KR
203.240.148.115	AS9848 SEJONG NETWORKS	`1.10ms` from Seoul, KR
203.240.145.254	AS9848 SEJONG NETWORKS	`1.08ms` from Seoul, KR
203.240.134.145	AS9848 SEJONG NETWORKS	`0.99ms` from Seoul, KR
203.240.149.201	AS45977 CANON KOREA INC.	`2.08ms` 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
185.81.11.83	AS62353 Eurofiber Cloud Infra B.V.	`2.43ms` from Amsterdam, NL
84.61.165.195	AS3209 Vodafone GmbH	`8.16ms` from Berlin, DE
103.107.237.3	AS136970 YISU CLOUD LTD	`2.00ms` from Hong Kong, HK
86.196.236.227	AS3215 Orange S.A.	`6.20ms` from Paris, FR
100.16.101.243	AS701 Verizon Business	`4.62ms` from Philadelphia, US
176.74.182.3	AS13768 Aptum Technologies	`0.92ms` from Portsmouth, GB
182.168.128.147	AS2527 Sony Network Communications Inc.	`2.34ms` from Tokyo, JP
111.47.98.19	AS9808 China Mobile Communications Group Co., Ltd.	`7.39ms` from Wuhan, CN
54.86.158.67	AS14618 Amazon.com, Inc.	`0.51ms` from Ashburn, US
18.213.106.83	AS14618 Amazon.com, Inc.	`0.44ms` from Ashburn, US
76.151.7.131	AS7922 Comcast Cable Communications, LLC	`6.92ms` from Ashburn, US
117.50.59.99	AS23724 IDC, China Telecommunications Corporation	`2.29ms` from Beijing, CN
179.41.29.211	AS22927 Telefonica de Argentina	`2.05ms` from Buenos Aires, AR
61.1.41.67	AS9829 National Internet Backbone	`1.52ms` from Chennai, IN
65.61.154.115	AS33070 Rackspace Hosting	`1.00ms` from Dallas, US
217.18.42.3	AS15954 Tecnocratica Centro de Datos, S.L.	`0.40ms` from Madrid, ES
115.147.10.83	AS9299 Philippine Long Distance Telephone Company	`0.76ms` from Manila, PH
73.57.54.131	AS7922 Comcast Cable Communications, LLC	`6.31ms` from Miami, US
142.196.25.147	AS33363 Charter Communications, Inc	`5.86ms` from Orlando, US
166.70.120.179	AS6315 XMission, L.C.	`0.52ms` from Salt Lake City, US
147.15.48.195	AS31898 Oracle Corporation	`0.44ms` from Sao Paulo, BR
216.247.79.3	AS397633 WWE	`1.41ms` from Secaucus, US
14.95.192.179	AS4766 Korea Telecom	`2.21ms` from Seoul, KR
36.232.47.115	AS3462 Data Communication Business Group	`2.25ms` from Taichung, TW
180.4.20.131	AS4713 NTT DOCOMO BUSINESS,Inc.	`2.48ms` from Tokyo, JP

Traceroute

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

traceroute -a -n -q1 -f3 -m7 203.240.130.102

traceroute to 203.240.130.102 (203.240.130.102): 7 hops max, 52 byte packets

3 [] 193.239.118.168 16.129 ms

4 [AS23764] 5.154.154.229 19.762 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Copenhagen, DK

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.

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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