223.223.208.0/22

AS4721 · JCOM Co., Ltd.

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Summary

Country	Japan
Domain	jcom.co.jp
ASN	AS4721
Parent Range	223.223.208.0/21
Registry	APNIC
ID	JCN

WHOIS Details

inetnum:        223.223.208.0 - 223.223.215.255
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 : [email protected]
mnt-irt:        IRT-JPNIC-JP
mnt-by:         MAINT-JPNIC
mnt-lower:      MAINT-JPNIC
last-modified:  2021-09-27T07:42:21Z
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:         [email protected]
abuse-mailbox:  [email protected]
phone:          +81-3-5297-2311
fax-no:         +81-3-5297-2312
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
auth:           # Filtered
remarks:        [email protected] 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:         [email protected]
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:        223.223.208.0 - 223.223.215.255
netname:        JCN-CIDR-BLK-JP
descr:          JCOM Co., Ltd.
remarks:        Email address for spam or abuse complaints : [email protected]
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:  2021-09-27T23:51:15Z
source:         JPNIC

Overlapping Ranges

BGP prefixes that contain 223.223.208.0/22

Range	ASN	Company	Num of IPs
223.223.208.0/21	AS4721	JCOM Co., Ltd.	2,048

Nearby Ranges

BGP prefixes that overlap with 223.223.0.0/16

Range	ASN	Company	Num of IPs
223.223.0.0/17	AS18144	Enecom,Inc.	32,768
223.223.240.0/20	AS59127	New Media Co.,Ltd	4,096
223.223.176.0/21	AS45064	Elink-space (Beijing) Technology Co,. Ltd	2,048
223.223.184.0/21	AS45064	Beijing WangJu Interworking Information Technology Co. LTD	2,048
223.223.208.0/21	AS4721	JCOM Co., Ltd.	2,048
223.223.176.0/21	AS4847	Elink-space (Beijing) Technology Co,. Ltd	2,048
223.223.184.0/21	AS4847	Beijing WangJu Interworking Information Technology Co. LTD	2,048
223.223.168.0/21	AS55329	Telcotech Ltd	2,048
223.223.220.0/22	AS132281	China Unicom (Singapore) Operations Pte Ltd	1,024
223.223.160.0/22	AS55382	Nagato city office	1,024
223.223.218.0/24	AS133380	Dedicated Server	256
223.223.219.0/24	AS133380	vps hosting	256
223.223.217.0/24	AS133380	Share Hosting	256
223.223.167.0/24	AS38643	UNIADEX, Ltd.	256
223.223.166.0/24	AS131894	UNIADEX, Ltd.	256

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
223.223.208.75	cobalt-blue.jp	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

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

IP Address	ASN	Details
223.223.209.104	AS4721 JCOM Co., Ltd.	`11.21ms` from Tokyo, JP
223.223.210.1	AS4721 JCOM Co., Ltd.	`3.71ms` from Tokyo, JP
223.223.208.1	AS4721 JCOM Co., Ltd.	`3.55ms` from Tokyo, JP
223.223.211.131	AS4721 JCOM Co., Ltd.	`11.02ms` 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
85.75.228.38	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`10.16ms` from Athens, GR
23.114.233.246	AS7018 AT&T Enterprises, LLC	`11.70ms` from Atlanta, US
88.150.6.22	AS43341 MDlink online service center GmbH	`8.52ms` from Berlin, DE
44.243.172.182	AS16509 Amazon.com, Inc.	`0.33ms` from Boardman, US
66.227.211.22	AS20115 Charter Communications LLC	`12.04ms` from Chicago, US
24.93.113.6	AS10796 Charter Communications Inc	`9.87ms` from Cleveland, US
106.55.224.246	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.21ms` from Guangzhou, CN
88.112.202.214	AS719 Elisa Oyj	`1.08ms` from Helsinki, FI
73.136.145.182	AS7922 Comcast Cable Communications, LLC	`6.97ms` from Houston, US
92.29.244.86	AS13285 TalkTalk Communications Limited	`2.23ms` from London, GB
58.179.146.118	AS9443 Vocus Retail	`2.54ms` from Melbourne, AU
13.208.162.198	AS16509 Amazon.com, Inc.	`0.59ms` from Osaka, JP
163.107.71.230	AS36351 IBM Cloud	`0.75ms` from Osasco, BR
34.12.137.118	AS396982 Google LLC	`0.12ms` from Oudeschip, NL
221.158.185.182	AS4766 Korea Telecom	`3.24ms` from Seoul, KR
59.156.107.214	AS10013 FreeBit Co.,Ltd.	`8.30ms` from Tokyo, JP
178.222.13.198	AS8400 TELEKOM SRBIJA a.d.	`1.88ms` from Belgrade, RS
84.58.155.54	AS3209 Vodafone GmbH	`18.20ms` from Berlin, DE
113.242.202.134	AS4134 CHINANET-BACKBONE	`5.07ms` from Changsha, CN
208.104.79.70	AS14615 Comporium, Inc	`1.48ms` from Charlotte, US
118.24.205.134	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.24ms` from Chongqing, CN
85.9.131.246	AS34557 Tacom LLC	`0.30ms` from Dushanbe, TJ
194.168.27.102	AS5089 Virgin Media Limited	`0.93ms` from London, GB
107.207.230.22	AS7018 AT&T Enterprises, LLC	`4.95ms` from Los Angeles, US
93.49.57.22	AS12874 Fastweb SpA	`3.38ms` 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 223.223.208.234

traceroute to 223.223.208.234 (223.223.208.234): 64 hops max, 52 byte packets

5 [AS5580] 203.190.230.37 1.237 ms

6 [AS9824] 203.165.0.53 1.15 ms

7 *

8 *

9 *

10 [AS4721] 223.223.208.234 18.45 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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