203.153.56.0/23

AS4721 · JCOM Co., Ltd.

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Summary

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

WHOIS Details

inetnum:        203.153.56.0 - 203.153.59.255
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:  2021-09-27T07:42:18Z
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:        203.153.56.0 - 203.153.59.255
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:  2021-09-27T23:50:05Z
source:         JPNIC

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

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

IP Address	ASN	Details
203.153.56.97	AS4721 JCOM Co., Ltd.	`2.60ms` from Tokyo, JP
203.153.57.1	AS4721 JCOM Co., Ltd.	`2.81ms` 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
105.111.172.7	AS36947 Telecom Algeria	`12.81ms` from Algiers, DZ
177.6.61.151	AS8167 V tal	`9.41ms` from Curitiba, BR
87.172.102.119	AS3320 Deutsche Telekom AG	`2.93ms` from Duesseldorf, DE
84.146.124.71	AS3320 Deutsche Telekom AG	`8.92ms` from Frankfurt am Main, DE
178.184.207.151	AS12389 PJSC Rostelecom	`13.32ms` from Krasnoyarsk, RU
209.182.236.103	AS29802 HIVELOCITY, Inc.	`0.35ms` from Los Angeles, US
95.214.62.119	AS198610 Beget LLC	`8.61ms` from Moscow, RU
90.110.69.151	AS3215 Orange S.A.	`9.29ms` from Paris, FR
178.67.42.103	AS12389 PJSC Rostelecom	`1.52ms` from Saint Petersburg, RU
162.144.78.71	AS46606 Unified Layer	`1.98ms` from Salt Lake City, US
174.31.230.135	AS209 CenturyLink Communications, LLC	`13.47ms` from Seattle, US
125.240.99.231	AS17858 LG POWERCOMM	`1.90ms` from Seoul, KR
183.249.106.87	AS56041 China Mobile communications corporation	`5.25ms` from Shanghai, CN
35.221.157.7	AS396982 Google LLC	`0.13ms` from Chang-hua, TW
51.112.70.247	AS16509 Amazon.com, Inc.	`0.11ms` from Dubai, AE
113.163.189.55	AS45899 VNPT Corp	`3.94ms` from Ho Chi Minh City, VN
38.239.73.215	AS134548 DXTL Tseung Kwan O Service	`0.72ms` from Hong Kong, HK
77.54.240.199	AS12353 Vodafone Portugal	`5.92ms` from Lisbon, PT
35.177.210.23	AS16509 Amazon.com, Inc.	`0.14ms` from London, GB
2.124.59.215	AS5607 Sky UK Limited	`6.17ms` from London, GB
97.144.230.199	AS6167 Verizon Business	`12.67ms` from Los Angeles, US
185.151.177.7	AS200845 AVATEL TELECOM, SA	`10.29ms` from Madrid, ES
151.31.175.183	AS1267 WIND TRE S.P.A.	`11.61ms` from Milan, IT
76.69.218.7	AS577 Bell Canada	`6.63ms` from Montreal, CA
125.204.253.103	AS4713 NTT Communications Corporation	`11.87ms` from Osaka, JP

Traceroute

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

traceroute -a -n -q1 203.153.56.5

traceroute to 203.153.56.5 (203.153.56.5): 64 hops max, 52 byte packets

1 [AS15169] 142.251.60.112 1.8 ms

2 *

3 [AS9824] 220.152.46.109 2.205 ms

4 *

5 *

6 *

7 [AS4721] 203.153.56.5 15.247 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On August 23rd 2025

What are IP address ranges?

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