223.165.20.0/22

AS4721 · JCOM Co., Ltd.

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Summary

Country	Japan
Domain	jcom.co.jp
ASN	AS4721
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

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
223.165.121.0/24	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 Enterprise	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

177 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.	`2.14ms` from Tokyo, JP
223.165.22.117	AS4721 JCOM Co., Ltd.	`3.55ms` from Tokyo, JP
223.165.20.133	AS4721 JCOM Co., Ltd.	`2.00ms` 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
96.84.234.86	AS7922 Comcast Cable Communications, LLC	`7.91ms` from Ashburn, US
1.88.130.86	AS17429 BEIJING GEHUA CATV NETWORK CO.LTD	`11.97ms` from Beijing, CN
23.245.255.182	AS11776 Breezeline	`13.73ms` from Chicago, US
14.174.247.230	AS45899 VNPT Corp	`5.36ms` from Da Nang, VN
70.240.54.166	AS7018 AT&T Enterprises, LLC	`8.27ms` from Dallas, US
91.54.47.118	AS3320 Deutsche Telekom AG	`4.40ms` from Duesseldorf, DE
96.83.60.166	AS7922 Comcast Cable Communications, LLC	`9.55ms` from Houston, US
119.197.228.86	AS4766 Korea Telecom	`0.97ms` from Incheon, KR
97.189.5.214	AS6167 Verizon Business	`9.87ms` from Los Angeles, US
50.240.32.118	AS7922 Comcast Cable Communications, LLC	`5.00ms` from Miami, US
188.233.239.70	AS34590 JSC "ER-Telecom Holding"	`16.92ms` from Moscow, RU
96.64.119.246	AS7922 Comcast Cable Communications, LLC	`7.71ms` from New York City, US
198.0.152.70	AS7922 Comcast Cable Communications, LLC	`6.41ms` from Providence, US
179.232.45.214	AS28573 Claro NXT Telecomunicacoes Ltda	`2.86ms` from Sao Paulo, BR
73.254.18.230	AS7922 Comcast Cable Communications, LLC	`8.58ms` from Seattle, US
175.213.139.198	AS4766 Korea Telecom	`2.96ms` from Seoul, KR
140.123.221.6	AS1659 Taiwan Academic Network (TANet) Information Center	`5.75ms` from Taichung, TW
185.220.214.86	AS30925 DELTA Fiber Nederland B.V.	`1.95ms` from Amsterdam, NL
66.70.210.214	AS16276 OVH SAS	`0.09ms` from Beauharnois, CA
50.229.153.38	AS7922 Comcast Cable Communications, LLC	`1.79ms` from Boston, US
91.216.177.6	AS51179 VIOTOP SRL	`1.45ms` from Bucharest, RO
41.120.29.150	AS12091 MTN SA	`12.79ms` from Johannesburg, ZA
201.102.166.166	AS8151 UNINET	`1.49ms` from Mexico City, MX
50.221.169.230	AS7922 Comcast Cable Communications, LLC	`1.21ms` from Miami, US
79.8.13.70	AS3269 Telecom Italia S.p.A.	`6.25ms` 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 223.165.22.9

traceroute to 223.165.22.9 (223.165.22.9): 64 hops max, 52 byte packets

5 [AS5580] 203.190.230.37 1.092 ms

6 [AS9824] 203.165.0.53 1.86 ms

7 *

8 *

9 [AS4721] 223.165.22.9 4.438 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On January 11th 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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