223.165.20.0/23

AS4721 · JCOM Co., Ltd.

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Summary

Country	Japan
Domain	jcom.co.jp
ASN	AS4721
Parent Range	223.165.20.0/22
Registry	APNIC
ID	JCN

WHOIS Details

inetnum:        223.165.20.0 - 223.165.23.255
netname:        JCN
descr:          JCOM Co., Ltd.
descr:          Daiwa Tower,
descr:          1-2-1 kamiogi,Suginami-ku,Tokyo,Japan
country:        JP
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
status:         ALLOCATED PORTABLE
remarks:        Email address for spam or abuse complaints : abuse@home.ne.jp
mnt-irt:        IRT-JPNIC-JP
mnt-by:         MAINT-JPNIC
mnt-lower:      MAINT-JPNIC
last-modified:  2021-09-27T07:42:20Z
source:         APNIC

irt:            IRT-JPNIC-JP
address:        Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda
address:        Chiyoda-ku, Tokyo 101-0047, Japan
e-mail:         hostmaster@nic.ad.jp
abuse-mailbox:  hostmaster@nic.ad.jp
phone:          +81-3-5297-2311
fax-no:         +81-3-5297-2312
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
auth:           # Filtered
remarks:        hostmaster@nic.ad.jp was validated on 2020-07-23
mnt-by:         MAINT-JPNIC
last-modified:  2022-06-14T04:26:58Z
source:         APNIC

role:           Japan Network Information Center
address:        Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda
address:        Chiyoda-ku, Tokyo 101-0047, Japan
country:        JP
phone:          +81-3-5297-2311
fax-no:         +81-3-5297-2312
e-mail:         hostmaster@nic.ad.jp
admin-c:        JI13-AP
tech-c:         JE53-AP
nic-hdl:        JNIC1-AP
mnt-by:         MAINT-JPNIC
last-modified:  2022-01-05T03:04:02Z
source:         APNIC

inetnum:        223.165.20.0 - 223.165.23.255
netname:        JCN-CIDR-BLK-JP
descr:          JCOM Co., Ltd.
remarks:        Email address for spam or abuse complaints : abuse@home.ne.jp
country:        JP
admin-c:        JP00006551
tech-c:         JP00006551
remarks:        This information has been partially mirrored by APNIC from
remarks:        JPNIC. To obtain more specific information, please use the
remarks:        JPNIC WHOIS Gateway at
remarks:        http://www.nic.ad.jp/en/db/whois/en-gateway.html or
remarks:        whois.nic.ad.jp for WHOIS client. (The WHOIS client
remarks:        defaults to Japanese output, use the /e switch for English
remarks:        output)
last-modified:  2021-09-27T23:51:05Z
source:         JPNIC

Overlapping Ranges

BGP prefixes that contain 223.165.20.0/23

Range	ASN	Company	Num of IPs
223.165.20.0/22	AS4721	JCOM Co., Ltd.	1,024

Nearby Ranges

BGP prefixes that overlap with 223.165.0.0/16

Range	ASN	Company	Num of IPs
223.165.128.0/17	AS38661	trizn inc.	32,768
223.165.32.0/19	AS4721	JCOM Co., Ltd.	8,192
223.165.80.0/20	AS10003	Ogaki Cable Television Co.,Inc.	4,096
223.165.96.0/20	AS13807	Great Plains Communications LLC	4,096
223.165.64.0/20	AS45179	SiteHost New Zealand	4,096
223.165.20.0/22	AS4721	JCOM Co., Ltd.	1,024
223.165.121.0/24	AS11377	SendGrid, Inc.	256
223.165.4.0/24	AS136258	Oneprovider.com - Taipei Infrastructure	256
223.165.5.0/24	AS136258	oneprovider.com - Islamabad Infrastructure	256
223.165.16.0/24	AS55850	Liverton Security Limited	256
223.165.6.0/24	AS149440	Evoxt Sdn. Bhd.	256
223.165.115.0/24	AS11377	SendGrid, Inc.	256
223.165.7.0/24	AS7578	GSL Networks Pty LTD	256
223.165.113.0/24	AS11377	SendGrid, Inc.	256
223.165.24.0/24	AS55705	I World Tower, DLF CITY	256
223.165.25.0/24	AS55705	I World Tower, DLF CITY	256
223.165.26.0/24	AS55705	I World Tower, DLF CITY	256
223.165.27.0/24	AS55705	I World Tower, DLF CITY	256
223.165.28.0/24	AS55705	I World Tower, DLF CITY	256
223.165.29.0/24	AS55705	I World Tower, DLF CITY	256
223.165.30.0/24	AS55705	I World Tower, DLF CITY	256
223.165.31.0/24	AS55705	I World Tower, DLF CITY	256
223.165.118.0/24	AS11377	SendGrid, Inc.	256
223.165.120.0/24	AS11377	SendGrid, Inc.	256
223.165.119.0/24	AS11377	SendGrid, Inc.	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

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

IP Address	ASN	Details
223.165.21.109	AS4721 JCOM Co., Ltd.	`2.16ms` from Tokyo, JP
223.165.20.149	AS4721 JCOM Co., Ltd.	`1.83ms` 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
132.220.106.183	AS8075 Microsoft Corporation	`0.22ms` from Amsterdam, NL
197.56.102.71	AS8452 TE-AS	`3.26ms` from Cairo, EG
68.36.69.103	AS7922 Comcast Cable Communications, LLC	`10.83ms` from Flint, US
49.130.56.151	AS17924 SmarTone Mobile Communications Ltd	`8.68ms` from Hong Kong, HK
93.182.191.215	AS47155 ViaEuropa Sverige AB	`5.52ms` from Hudiksvall, SE
1.233.158.199	AS9318 SK Broadband Co Ltd	`1.49ms` from Incheon, KR
204.1.39.167	AS400427 IQ Fiber	`0.98ms` from Jacksonville, US
108.86.9.23	AS7018 AT&T Enterprises, LLC	`7.53ms` from Miami, US
189.156.118.103	AS8151 UNINET	`12.44ms` from Miami, US
70.55.188.23	AS577 Bell Canada	`1.67ms` from Montreal, CA
121.149.233.103	AS4766 Korea Telecom	`7.43ms` from Seoul, KR
49.28.231.23	AS4766 Korea Telecom	`7.22ms` from Seoul, KR
80.1.253.167	AS5089 Virgin Media Limited	`4.58ms` from London, GB
195.180.16.55	AS56329 Gigaclear Limited	`2.11ms` from London, GB
175.38.17.231	AS4804 Microplex PTY LTD	`4.67ms` from Melbourne, AU
169.197.186.39	AS26548 PureVoltage Hosting Inc.	`0.18ms` from New York City, US
189.47.14.151	AS27699 TELEFÔNICA BRASIL S.A	`3.55ms` from Osasco, BR
97.165.173.71	AS6167 Verizon Business	`13.58ms` from Philadelphia, US
181.173.132.135	AS7418 TELEFÓNICA CHILE S.A.	`2.36ms` from Santiago, CL
200.211.64.71	AS4230 CLARO S.A.	`8.16ms` from Sao Paulo, BR
115.160.8.103	AS9694 Seokyung Cable Television Co.. Ltd.	`7.51ms` from Seoul, KR
101.35.176.119	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.98ms` from Shanghai, CN
133.125.101.167	AS7684 SAKURA Internet Inc.	`16.24ms` from Tokyo, JP
91.250.183.247	AS12479 Orange Espagne SA	`1.20ms` from Zaragoza, ES
44.250.180.167	AS16509 Amazon.com, Inc.	`0.14ms` from Boardman, 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 223.165.20.190

traceroute to 223.165.20.190 (223.165.20.190): 64 hops max, 52 byte packets

5 [AS5580] 203.190.230.37 2.483 ms

6 [AS9824] 203.165.0.53 1.386 ms

7 *

8 *

9 *

10 [AS4721] 223.165.20.190 3.942 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On January 30th 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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