203.165.0.0/16

AS9824 · JCOM Co., Ltd.

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Summary

Country	Japan
Domain	jcom.co.jp
ASN	AS9824
Registry	APNIC
ID	JTCL-JP

WHOIS Details

inetnum:        203.165.0.0 - 203.165.127.255
netname:        JTCL-JP
descr:          JCOM Co., Ltd.
country:        JP
org:            ORG-JTCL1-AP
admin-c:        JTCL2-AP
tech-c:         JTCL2-AP
abuse-c:        AJ428-AP
status:         ALLOCATED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-JTCL-JP
mnt-routes:     MAINT-JTCL-JP
mnt-irt:        IRT-JTCL-JP
last-modified:  2021-10-18T23:14:13Z
source:         APNIC

irt:            IRT-JTCL-JP
address:        1-2-1, Kamiogi, Suginami-ku
address:        Tokyo, Japan, 167-0043
e-mail:         abuse@home.ne.jp
abuse-mailbox:  abuse@home.ne.jp
admin-c:        JTCL2-AP
tech-c:         JTCL2-AP
auth:           # Filtered
remarks:        abuse@home.ne.jp was validated on 2025-11-11
mnt-by:         MAINT-JTCL-JP
last-modified:  2025-11-18T00:29:34Z
source:         APNIC

organisation:   ORG-JTCL1-AP
org-name:       JCOM Co., Ltd.
org-type:       LIR
country:        JP
address:        1-2-1, Kamiogi, Suginami-ku
address:        Tokyo, Japan, 167-0043
phone:          +81-3-4366-8870
fax-no:         +81-3-4366-8571
e-mail:         abuse@home.ne.jp
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:16:29Z
source:         APNIC

role:           ABUSE JTCLJP
country:        ZZ
address:        1-2-1, Kamiogi, Suginami-ku
address:        Tokyo, Japan, 167-0043
phone:          +000000000
e-mail:         abuse@home.ne.jp
admin-c:        JTCL2-AP
tech-c:         JTCL2-AP
nic-hdl:        AJ428-AP
remarks:        Generated from irt object IRT-JTCL-JP
remarks:        abuse@home.ne.jp was validated on 2025-11-11
abuse-mailbox:  abuse@home.ne.jp
mnt-by:         APNIC-ABUSE
last-modified:  2025-11-11T13:40:10Z
source:         APNIC

role:           Jupiter Telecommunication Co Ltd administrator
address:        1-2-1, Kamiogi,Suginami-ku
address:        Tokyo, Japan, 167-0043
country:        JP
phone:          +81-3-6765-8000
e-mail:         abuse@home.ne.jp
admin-c:        JTCL2-AP
tech-c:         JTCL2-AP
nic-hdl:        JTCL2-AP
mnt-by:         MAINT-JTCL-JP
last-modified:  2025-07-01T05:25:52Z
source:         APNIC

Overlapping Ranges

BGP prefixes that are contained by 203.165.0.0/16

Range	ASN	Company	Num of IPs
203.165.128.0/17	AS9824	JCOM Co., Ltd.	32,768
203.165.0.0/17	AS9824	JCOM Co., Ltd.	32,768

Nearby Ranges

BGP prefixes that overlap with 203.0.0.0/8

Range	ASN	Company	Num of IPs
203.40.0.0/13	AS1221	Telstra Limited	524,288
203.48.0.0/14	AS1221	Telstra Limited	262,144
203.36.0.0/14	AS1221	Telstra Limited	262,144
203.102.0.0/15	AS703	Verizon Australia PTY Limited	131,072
203.52.0.0/15	AS1221	Telstra Limited	131,072
203.227.0.0/16	AS9319	SEJONG NETWORKS	65,536
203.108.0.0/16	AS703	OzEmail Pty Ltd	65,536
203.227.0.0/16	AS9493	SEJONG NETWORKS	65,536
203.67.0.0/16	AS4780	Digital United Inc.	65,536
203.225.0.0/16	AS4766	KOLON BENIT	65,536
203.231.0.0/16	AS18309	SEJONG NETWORKS	65,536
203.106.0.0/16	AS4788	TM TECHNOLOGY SERVICES SDN. BHD.	65,536
203.162.0.0/16	AS7643	Vietnam Posts and Telecommunications Group	65,536
203.224.0.0/16	AS9273	ITCENENTEC CO.,LTD.	65,536
203.70.0.0/16	AS4780	Digital United Inc.	65,536
203.74.0.0/16	AS3462	Data Communication Business Group,	65,536
203.66.0.0/16	AS3462	Data Communication Business Group,	65,536
203.75.0.0/16	AS3462	Data Communication Business Group,	65,536
203.85.0.0/16	AS4058	CITIC Telecom International CPC Limited	65,536
203.182.0.0/16	AS4673	NTT DATA CORPORATION	65,536
203.177.0.0/16	AS4775	Globe Telecom	65,536
203.155.0.0/16	AS17478	KSC Commercial Internet Co. Ltd.	65,536
203.151.0.0/16	AS133529	Internet Thailand Company Limited	65,536
203.231.0.0/16	AS18305	SEJONG NETWORKS	65,536
203.68.0.0/16	AS1659	Taiwan Academic Network	65,536
203.59.0.0/16	AS4802	iiNet Limited	65,536
203.69.0.0/16	AS137280	Data Communication Business Group,	65,536
203.61.0.0/16	AS703	Verizon Australia PTY Limited	65,536
203.231.0.0/16	AS17881	SEJONG NETWORKS	65,536
203.155.0.0/16	AS7693	KSC Commercial Internet Co. Ltd.	65,536
203.177.0.0/16	AS24451	Globe Telecom	65,536
203.231.0.0/16	AS131866	SEJONG NETWORKS	65,536
203.155.0.0/16	AS23644	KSC Commercial Internet Co. Ltd.	65,536
203.177.0.0/16	AS24179	Globe Telecom	65,536
203.35.0.0/16	AS1221	Telstra Limited	65,536
203.64.0.0/16	AS1659	Taiwan Academic Network	65,536
203.138.0.0/16	AS2514	NTT PC Communications,Inc.	65,536
203.69.0.0/16	AS3462	Data Communication Business Group,	65,536
203.231.0.0/16	AS3608	SEJONG NETWORKS	65,536
203.231.0.0/16	AS18300	SEJONG NETWORKS	65,536
203.151.0.0/16	AS4618	Internet Thailand Company Limited	65,536
203.154.0.0/16	AS4618	Internet Thailand Company Limited	65,536
203.73.0.0/16	AS4780	Digital United Inc.	65,536
203.227.0.0/16	AS18300	SEJONG NETWORKS	65,536
203.177.0.0/16	AS132199	Globe Telecom	65,536
203.108.0.0/16	AS12234	OzEmail Pty Ltd	65,536
203.74.0.0/16	AS131660	Data Communication Business Group,	65,536
203.54.0.0/16	AS1221	Telstra Limited	65,536
203.231.0.0/16	AS17837	SEJONG NETWORKS	65,536
203.231.0.0/16	AS9684	SEJONG NETWORKS	65,536

Hosted domains

There are 14 domain names hosted across 11 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.165.14.135	joydemand.jp	2
203.165.28.243	cabletalk.jp	1
203.165.55.33	chalk-less.org	1
203.165.179.34	finity4all.store	1
203.165.177.192	marihouse.biz	1
203.165.188.246	mottsan7ce.net	1

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

1,490 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
203.165.66.161	AS9824 JCOM Co., Ltd.	`28.98ms` from Tokyo, JP
203.165.94.128	AS9824 JCOM Co., Ltd.	`16.69ms` from Tokyo, JP
203.165.68.1	AS9824 JCOM Co., Ltd.	`1.79ms` from Tokyo, JP
203.165.135.116	AS9824 JCOM Co., Ltd.	`13.36ms` from Tokyo, JP
203.165.93.118	AS9824 JCOM Co., Ltd.	`11.24ms` from Tokyo, JP
203.165.122.183	AS9824 JCOM Co., Ltd.	`12.32ms` from Tokyo, JP
203.165.170.24	AS9824 JCOM Co., Ltd.	`11.17ms` from Tokyo, JP
203.165.206.251	AS9824 JCOM Co., Ltd.	`6.51ms` from Tokyo, JP
203.165.182.137	AS9824 JCOM Co., Ltd.	`10.20ms` from Tokyo, JP
203.165.51.64	AS9824 JCOM Co., Ltd.	`7.63ms` from Tokyo, JP
203.165.214.133	AS9824 JCOM Co., Ltd.	`10.37ms` from Tokyo, JP
203.165.139.54	AS9824 JCOM Co., Ltd.	`6.79ms` from Tokyo, JP
203.165.123.248	AS9824 JCOM Co., Ltd.	`10.32ms` from Tokyo, JP
203.165.229.174	AS9824 JCOM Co., Ltd.	`10.45ms` from Tokyo, JP
203.165.96.1	AS9824 JCOM Co., Ltd.	`2.27ms` from Tokyo, JP
203.165.72.1	AS9824 JCOM Co., Ltd.	`2.74ms` from Tokyo, JP
203.165.179.235	AS9824 JCOM Co., Ltd.	`10.65ms` from Tokyo, JP
203.165.32.1	AS9824 JCOM Co., Ltd.	`2.48ms` from Tokyo, JP
203.165.79.113	AS9824 JCOM Co., Ltd.	`10.58ms` from Tokyo, JP
203.165.148.1	AS9824 JCOM Co., Ltd.	`2.19ms` from Tokyo, JP
203.165.136.1	AS9824 JCOM Co., Ltd.	`2.09ms` from Tokyo, JP
203.165.76.1	AS9824 JCOM Co., Ltd.	`2.36ms` from Tokyo, JP
203.165.224.1	AS9824 JCOM Co., Ltd.	`2.83ms` from Tokyo, JP
203.165.178.211	AS9824 JCOM Co., Ltd.	`11.91ms` from Tokyo, JP
203.165.235.162	AS9824 JCOM Co., Ltd.	`4.47ms` from Tokyo, JP

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
87.211.165.176	AS13127 Odido Netherlands B.V.	`13.34ms` from Amsterdam, NL
103.152.14.0	AS138915 Kaopu Cloud HK Limited	`0.32ms` from Dubai, AE
94.193.123.64	AS5607 Sky UK Limited	`1.46ms` from London, GB
79.109.136.0	AS138160 ZTNET CO., LTD	`0.47ms` from Los Angeles, US
86.200.197.96	AS3215 Orange S.A.	`9.20ms` from Marseille, FR
191.96.33.144	AS212238 Datacamp Limited	`0.33ms` from Osasco, BR
172.10.163.64	AS7018 AT&T Enterprises, LLC	`4.16ms` from San Jose, US
211.197.59.32	AS4766 Korea Telecom	`6.45ms` from Seoul, KR
175.107.129.128	AS53813 ZSCALER, INC.	`0.23ms` from Singapore, SG
183.191.1.144	AS4837 CHINA UNICOM China169 Backbone	`2.45ms` from Taiyuan, CN
106.166.134.128	AS2516 KDDI CORPORATION	`5.08ms` from Tokyo, JP
99.230.2.128	AS812 Rogers Communications Canada Inc.	`4.46ms` from Toronto, CA
83.76.111.224	AS3303 Swisscom (Switzerland) Ltd	`1.88ms` from Zuerich, CH
76.119.82.112	AS7922 Comcast Cable Communications, LLC	`14.86ms` from Boston, US
223.146.159.176	AS4134 CHINANET-BACKBONE	`3.15ms` from Chenzhou, CN
73.146.169.16	AS7922 Comcast Cable Communications, LLC	`14.81ms` from Chicago, US
73.8.223.160	AS7922 Comcast Cable Communications, LLC	`9.94ms` from Chicago, US
76.184.4.240	AS11427 Charter Communications Inc	`5.35ms` from Dallas, US
65.63.1.240	AS8011 MongoDB, Inc.	`0.12ms` from Dublin, IE
93.240.33.128	AS3320 Deutsche Telekom AG	`4.33ms` from Frankfurt am Main, DE
148.230.105.176	AS47583 Hostinger International Limited	`0.46ms` from Frankfurt am Main, DE
119.178.94.128	AS4837 CHINA UNICOM China169 Backbone	`6.54ms` from Jinan, CN
90.204.154.96	AS5607 Sky UK Limited	`1.84ms` from London, GB
67.181.167.64	AS7922 Comcast Cable Communications, LLC	`10.34ms` from Los Angeles, US
23.10.66.80	AS16625 Akamai Technologies, Inc.	`0.46ms` from Madrid, ES

Traceroute

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

traceroute -a -n -q1 203.165.0.237

traceroute to 203.165.0.237 (203.165.0.237): 64 hops max, 52 byte packets

1 [AS15169] 74.125.251.87 224.483 ms

2 *

3 [AS9824] 203.165.0.237 227.03 ms

Measurement taken from

IPinfo ProbeNet in Oudeschip, NL

On November 14th 2025

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