223.223.208.0/21

AS4721 · JCOM Co., Ltd.

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Summary

Country	Japan
Domain	jcom.co.jp
ASN	AS4721
Registry	APNIC
ID	JCN

WHOIS Details

inetnum:        223.223.208.0 - 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 : abuse@home.ne.jp
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:         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:        223.223.208.0 - 223.223.215.255
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:  2021-09-27T23:51:15Z
source:         JPNIC

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
223.223.176.0/21	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 are 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

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

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

IP Address	ASN	Details
223.223.213.122	AS4721 JCOM Co., Ltd.	`5.41ms` from Tokyo, JP
223.223.210.1	AS4721 JCOM Co., Ltd.	`4.04ms` from Tokyo, JP
223.223.211.237	AS4721 JCOM Co., Ltd.	`10.94ms` from Tokyo, JP
223.223.214.1	AS4721 JCOM Co., Ltd.	`3.07ms` from Tokyo, JP
223.223.212.1	AS4721 JCOM Co., Ltd.	`4.40ms` from Tokyo, JP
223.223.209.216	AS4721 JCOM Co., Ltd.	`11.13ms` from Tokyo, JP
223.223.208.1	AS4721 JCOM Co., Ltd.	`4.10ms` 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
87.209.242.197	AS50266 Odido Netherlands B.V.	`3.50ms` from Amsterdam, NL
63.139.89.69	AS7029 Windstream Communications LLC	`7.60ms` from Ashburn, US
2.201.116.101	AS3209 Vodafone GmbH	`3.98ms` from Berlin, DE
104.228.251.37	AS11351 Charter Communications Inc	`19.39ms` from Chicago, US
34.56.45.85	AS396982 Google LLC	`0.13ms` from Council Bluffs, US
118.131.118.53	AS3786 LG DACOM Corporation	`1.45ms` from Incheon, KR
213.153.167.197	AS34984 Superonline Iletisim Hizmetleri A.S.	`1.62ms` from Istanbul, TR
178.184.171.117	AS12389 PJSC Rostelecom	`13.17ms` from Krasnoyarsk, RU
172.167.122.69	AS8075 Microsoft Corporation	`0.21ms` from London, GB
54.219.58.69	AS16509 Amazon.com, Inc.	`0.18ms` from San Jose, US
201.119.30.85	AS8151 UNINET	`3.81ms` from Santiago de Queretaro, MX
64.34.222.85	AS13768 Aptum Technologies	`0.26ms` from Toronto, CA
206.174.184.101	AS15024 Packetworks Inc.	`0.55ms` from Toronto, CA
188.21.211.85	AS8447 A1 Telekom Austria AG	`5.66ms` from Vienna, AT
77.242.162.149	AS15547 netplus.ch SA	`11.28ms` from Zuerich, CH
47.253.28.37	AS45102 Alibaba (US) Technology Co., Ltd.	`0.24ms` from Ashburn, US
181.174.29.181	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`8.01ms` from Bogota, CO
174.84.102.245	AS20115 Charter Communications LLC	`13.06ms` from Chicago, US
64.62.46.133	AS7385 Allstream Business US, LLC	`8.58ms` from Chicago, US
62.159.36.133	AS3320 Deutsche Telekom AG	`1.32ms` from Duesseldorf, DE
163.0.42.5	AS17816 China Unicom IP network China169 Guangdong province	`5.37ms` from Guangzhou, CN
183.63.29.245	AS4134 CHINANET-BACKBONE	`3.53ms` from Guangzhou, CN
66.193.126.5	AS3356 Level 3 Parent, LLC	`3.96ms` from Houston, US
83.41.4.37	AS3352 TELEFONICA DE ESPANA S.A.U.	`9.58ms` from Madrid, ES
85.20.167.133	AS8968 BT Italia S.p.A.	`5.78ms` 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 223.223.212.154

traceroute to 223.223.212.154 (223.223.212.154): 64 hops max, 52 byte packets

1 [AS202422] 202.78.167.1 0.197 ms

2 [AS199524] 92.223.63.81 0.154 ms

3 *

4 [] 101.203.89.218 0.874 ms

5 [AS9824] 220.152.46.21 0.48 ms

6 *

7 *

8 *

9 [AS4721] 223.223.212.154 4.175 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

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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