203.236.128.0/18

AS9848 · SEJONG NETWORKS

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Summary

Country	South Korea
Domain	sejongnetworks.com
ASN	AS9848
Registry	APNIC
ID	SHINBIRO

WHOIS Details

inetnum:        203.236.128.0 - 203.236.191.255
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 203.236.128.0/18

Range	ASN	Company	Num of IPs
203.236.135.0/24	AS9845	CJcablenet	256
203.236.188.0/22	AS23584	PUSAN CATV	1,024

Nearby Ranges

BGP prefixes that overlap with 203.236.0.0/16

Range	ASN	Company	Num of IPs
203.236.192.0/18	AS9286	KINX	16,384
203.236.0.0/19	AS9644	SK Telecom	8,192
203.236.32.0/21	AS9644	SK Telecom	2,048
203.236.188.0/22	AS23584	PUSAN CATV	1,024
203.236.40.0/22	AS9644	SK Telecom	1,024
203.236.135.0/24	AS9845	CJcablenet	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

2,539 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
203.236.191.129	AS23584 PUSAN CABLE TV SYSTEM CO., LTD.	`7.22ms` from Seoul, KR
203.236.156.167	AS9848 SEJONG NETWORKS	`0.50ms` from Seoul, KR
203.236.147.224	AS9848 SEJONG NETWORKS	`0.51ms` from Seoul, KR
203.236.155.76	AS9848 SEJONG NETWORKS	`0.46ms` from Seoul, KR
203.236.144.255	AS9848 SEJONG NETWORKS	`0.48ms` from Seoul, KR
203.236.145.178	AS9848 SEJONG NETWORKS	`0.46ms` from Seoul, KR
203.236.152.3	AS9848 SEJONG NETWORKS	`0.58ms` from Seoul, KR
203.236.142.44	AS9848 SEJONG NETWORKS	`6.46ms` from Seoul, KR
203.236.178.17	AS9973 BSITC	`55.37ms` from Seoul, KR
203.236.179.57	AS9973 BSITC	`55.26ms` from Seoul, KR
203.236.153.154	AS9848 SEJONG NETWORKS	`0.51ms` from Seoul, KR
203.236.190.129	AS23584 PUSAN CABLE TV SYSTEM CO., LTD.	`7.13ms` from Seoul, KR
203.236.149.46	AS9848 SEJONG NETWORKS	`0.46ms` from Seoul, KR
203.236.177.11	AS9973 BSITC	`53.15ms` from Seoul, KR
203.236.150.255	AS9848 SEJONG NETWORKS	`0.74ms` from Seoul, KR
203.236.162.2	AS23588 KAKAO Enterprise	`0.78ms` from Seoul, KR
203.236.148.31	AS9848 SEJONG NETWORKS	`0.55ms` from Seoul, KR
203.236.176.185	AS9973 BSITC	`55.33ms` 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
18.233.173.66	AS14618 Amazon.com, Inc.	`0.48ms` from Ashburn, US
66.168.147.194	AS20115 Charter Communications LLC	`18.76ms` from Atlanta, US
196.114.151.34	AS36925 MEDITELECOM	`11.98ms` from Casablanca, MA
73.208.101.18	AS7922 Comcast Cable Communications, LLC	`4.91ms` from Chicago, US
75.188.47.130	AS10796 Charter Communications Inc	`7.17ms` from Columbus, US
200.227.251.2	AS4230 CLARO S.A.	`0.65ms` from Curitiba, BR
14.171.142.98	AS45899 VNPT Corp	`3.75ms` from Hanoi, VN
49.247.207.162	AS38700 SMILESERV	`1.21ms` from Incheon, KR
80.104.238.178	AS3269 Telecom Italia S.p.A.	`4.17ms` from Milan, IT
91.68.4.2	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`0.77ms` from Paris, FR
187.20.211.2	AS28573 Claro NXT Telecomunicacoes Ltda	`9.35ms` from Rio de Janeiro, BR
209.53.49.34	AS852 TELUS Communications Inc.	`4.21ms` from Seattle, US
23.55.209.178	AS16625 Akamai Technologies, Inc.	`0.32ms` from Tokyo, JP
94.168.22.146	AS33915 Vodafone Libertel B.V.	`4.99ms` from Amsterdam, NL
147.175.96.2	AS2607 Zdruzenie pouzivatelov Slovenskej akademickej datovej siete SANET	`0.93ms` from Bratislava, SK
84.195.150.66	AS6848 Telenet BV	`6.60ms` from Brussels, BE
128.153.13.146	AS92 Clarkson University	`6.65ms` from Buffalo, US
93.116.237.194	AS8926 Moldtelecom SA	`0.82ms` from Chisinau, MD
3.16.210.146	AS16509 Amazon.com, Inc.	`0.13ms` from Columbus, US
87.58.59.146	AS3292 TDC Holding A/S	`2.85ms` from Copenhagen, DK
154.36.92.18	AS28753 Leaseweb Deutschland GmbH	`0.46ms` from Frankfurt am Main, DE
47.76.172.210	AS45102 Alibaba (US) Technology Co., Ltd.	`0.75ms` from Hong Kong, HK
142.43.44.146	AS17372 Bank of Montreal	`2.38ms` from London, GB
86.25.254.130	AS5089 Virgin Media Limited	`10.74ms` from London, GB
77.72.38.178	AS34606 B.B.Bell SPA	`3.95ms` from Milan, IT

Traceroute

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

traceroute -a -n -q1 -f5 203.236.147.56

traceroute to 203.236.147.56 (203.236.147.56): 64 hops max, 52 byte packets

5 [AS9848] 203.236.147.56 0.569 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

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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