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
203.240.128.0/24	AS9645	HYUNDAI International Merchant Bank	256
203.240.132.0/24	AS9848	SEJONG NETWORKS	256
203.240.149.0/24	AS45977	Canon Korea Business Solution	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

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

IP Address	ASN	Details
203.240.131.85	AS4670 Shinbiro	`1.58ms` from Seoul, KR
203.240.149.201	AS45977 CANON KOREA INC.	`2.19ms` from Seoul, KR
203.240.134.145	AS9848 SEJONG NETWORKS	`1.17ms` from Seoul, KR
203.240.145.254	AS9848 SEJONG NETWORKS	`1.19ms` from Seoul, KR
203.240.151.252	AS45977 CANON KOREA INC.	`2.04ms` from Seoul, KR
203.240.138.9	AS4670 Shinbiro	`3.44ms` from Seoul, KR
203.240.132.19	AS9848 SEJONG NETWORKS	`1.27ms` from Seoul, KR
203.240.129.95	AS4670 Shinbiro	`1.49ms` from Seoul, KR
203.240.150.251	AS45977 CANON KOREA INC.	`2.15ms` from Seoul, KR
203.240.148.114	AS9848 SEJONG NETWORKS	`1.21ms` from Seoul, KR
203.240.128.111	AS9645 NEXT SECURITIES CORPORATION	`1.16ms` from Incheon, KR
203.240.135.213	AS3786 LG DACOM Corporation	`6.79ms` from Seoul, KR
203.240.141.210	AS4670 Shinbiro	`3.19ms` 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
178.60.37.195	AS12334 R Cable y Telecable Telecomunicaciones, S.A.U.	`0.30ms` from A Coruna, ES
154.255.169.67	AS36947 Telecom Algeria	`9.53ms` from Algiers, DZ
51.161.66.67	AS16276 OVH SAS	`0.08ms` from Beauharnois, CA
146.189.25.35	AS5724 University of Massachusetts Medical School	`1.95ms` from Boston, US
152.199.147.147	AS14210 Edgecast Inc.	`1.97ms` from Charlotte, US
68.40.94.83	AS7922 Comcast Cable Communications, LLC	`11.66ms` from Chicago, US
75.185.159.211	AS10796 Charter Communications Inc	`8.36ms` from Cleveland, US
92.25.93.195	AS13285 TalkTalk Communications Limited	`6.30ms` from London, GB
134.0.75.131	AS15395 Rackspace Ltd.	`1.30ms` from London, GB
38.38.45.179	AS398823 PEG TECH INC	`0.24ms` from Los Angeles, US
189.143.3.35	AS8151 UNINET	`19.70ms` from Los Angeles, US
34.139.5.147	AS396982 Google LLC	`0.12ms` from Moncks Corner, US
83.149.205.3	AS3267 SCIENTIFIC RESEARCH INSTITUTE FOR SYSTEM ANALYSIS OF THE NATIONAL RESEARCH CENTRE "KURCHATOV INSTITUTE"	`1.10ms` from Moscow, RU
58.210.98.99	AS4134 CHINANET-BACKBONE	`4.03ms` from Nanjing, CN
80.14.44.227	AS3215 Orange S.A.	`2.40ms` from Paris, FR
114.37.73.131	AS3462 Data Communication Business Group	`0.99ms` from Taipei, TW
36.12.234.163	AS2516 KDDI CORPORATION	`1.09ms` from Tokyo, JP
96.238.23.83	AS701 Verizon Business	`1.72ms` from Boston, US
3.143.128.211	AS16509 Amazon.com, Inc.	`0.17ms` from Columbus, US
167.249.206.3	AS265174 MENTRIX TELECOM LTDA	`14.40ms` from Fortaleza, BR
122.177.179.227	AS24560 Bharti Airtel Ltd., Telemedia Services	`2.49ms` from Kolkata, IN
95.239.68.243	AS3269 Telecom Italia S.p.A.	`4.75ms` from Milan, IT
90.21.41.83	AS3215 Orange S.A.	`12.66ms` from Paris, FR
90.182.114.99	AS5610 O2 Czech Republic, a.s.	`0.43ms` from Prague, CZ
174.165.67.99	AS7922 Comcast Cable Communications, LLC	`2.07ms` from Seattle, US

Traceroute

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

traceroute -a -n -q1 -f5 -m9 203.240.152.135

traceroute to 203.240.152.135 (203.240.152.135): 9 hops max, 52 byte packets

5 [AS215859] 5.223.0.77 0.416 ms

6 [] 27.111.229.59 0.956 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Singapore, SG

On January 19th 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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