203.124.64.0/19

AS4721 · JCOM Co., Ltd.

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Summary

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

WHOIS Details

inetnum:        203.124.64.0 - 203.124.95.255
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:        203.124.64.0 - 203.124.95.255
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:  2021-09-27T23:49:54Z
source:         JPNIC

Nearby Ranges

BGP prefixes that overlap with 203.124.0.0/16

Range	ASN	Company	Num of IPs
203.124.176.0/20	AS132873	Zettagrid Pty Ltd	4,096
203.124.144.0/20	AS17495	RCOM-STATIC	4,096
203.124.176.0/20	AS7604	Zettagrid Pty Ltd	4,096
203.124.16.0/21	AS55850	Mercury NZ Limited	2,048
203.124.0.0/22	AS3758	SingNet Pte Ltd	1,024
203.124.4.0/23	AS56289	Internet link for two deligated ISPs, DBSVO On-line trading	512
203.124.154.0/24	AS17495	RCOM-STATIC-bangalore	256
203.124.172.0/24	AS17495	RCOM-STATIC-delhi	256
203.124.152.0/24	AS17495	RCOM-STATIC-bangalore	256
203.124.128.0/24	AS17495	RCOM-STATIC-Pune	256
203.124.149.0/24	AS17495	RCOM-STATIC-delhi	256
203.124.140.0/24	AS17495	RCOM-STATIC-bangalore	256
203.124.143.0/24	AS17495	RCOM-STATIC-Pune	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

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

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

IP Address	ASN	Details
203.124.75.165	AS4721 JCOM Co., Ltd.	`11.79ms` from Tokyo, JP
203.124.86.104	AS4721 JCOM Co., Ltd.	`12.62ms` from Tokyo, JP
203.124.89.134	AS4721 JCOM Co., Ltd.	`7.88ms` from Tokyo, JP
203.124.80.1	AS4721 JCOM Co., Ltd.	`2.31ms` from Tokyo, JP
203.124.68.1	AS4721 JCOM Co., Ltd.	`3.83ms` from Tokyo, JP
203.124.70.234	AS4721 JCOM Co., Ltd.	`12.89ms` from Tokyo, JP
203.124.92.1	AS4721 JCOM Co., Ltd.	`2.28ms` from Tokyo, JP
203.124.91.199	AS4721 JCOM Co., Ltd.	`11.34ms` from Tokyo, JP
203.124.83.115	AS4721 JCOM Co., Ltd.	`8.51ms` from Tokyo, JP
203.124.76.1	AS4721 JCOM Co., Ltd.	`2.17ms` from Tokyo, JP
203.124.88.1	AS4721 JCOM Co., Ltd.	`2.43ms` from Tokyo, JP
203.124.87.31	AS4721 JCOM Co., Ltd.	`9.99ms` from Tokyo, JP
203.124.72.1	AS4721 JCOM Co., Ltd.	`2.46ms` from Tokyo, JP
203.124.73.157	AS4721 JCOM Co., Ltd.	`5.31ms` from Tokyo, JP
203.124.65.93	AS4721 JCOM Co., Ltd.	`11.23ms` from Tokyo, JP
203.124.82.93	AS4721 JCOM Co., Ltd.	`8.91ms` from Tokyo, JP
203.124.69.63	AS4721 JCOM Co., Ltd.	`9.78ms` from Tokyo, JP
203.124.93.60	AS4721 JCOM Co., Ltd.	`8.44ms` from Tokyo, JP
203.124.81.243	AS4721 JCOM Co., Ltd.	`10.81ms` from Tokyo, JP
203.124.67.1	AS4721 JCOM Co., Ltd.	`2.59ms` from Tokyo, JP
203.124.74.228	AS4721 JCOM Co., Ltd.	`11.17ms` from Tokyo, JP
203.124.90.164	AS4721 JCOM Co., Ltd.	`8.34ms` from Tokyo, JP
203.124.85.124	AS4721 JCOM Co., Ltd.	`8.94ms` from Tokyo, JP
203.124.71.1	AS4721 JCOM Co., Ltd.	`8.69ms` from Tokyo, JP
203.124.78.142	AS4721 JCOM Co., Ltd.	`11.51ms` 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
38.97.64.131	AS174 Cogent Communications, LLC	`0.20ms` from Boston, US
73.145.149.83	AS7922 Comcast Cable Communications, LLC	`11.98ms` from Chicago, US
34.255.2.179	AS16509 Amazon.com, Inc.	`0.43ms` from Dublin, IE
4.225.51.195	AS8075 Microsoft Corporation	`0.21ms` from Gaevle, SE
58.225.53.19	AS9318 SK Broadband Co Ltd	`1.67ms` from Incheon, KR
184.31.227.243	AS16625 Akamai Technologies, Inc.	`0.18ms` from Jakarta, ID
86.188.142.19	AS2856 British Telecommunications PLC	`0.82ms` from London, GB
86.207.199.243	AS3215 Orange S.A.	`8.63ms` from Marseille, FR
164.68.225.243	AS23089 Hotwire Communications	`1.94ms` from Miami, US
47.200.83.115	AS5650 Frontier Communications of America, Inc.	`7.92ms` from Miami, US
195.110.123.147	AS39729 REGISTER S.P.A.	`0.88ms` from Milan, IT
46.235.136.3	AS197589 Alfanews S.r.l.	`4.27ms` from Rome, IT
220.149.138.3	AS38113 KUMC	`1.38ms` from Seoul, KR
123.96.112.19	AS4134 CHINANET-BACKBONE	`10.50ms` from Shanghai, CN
178.68.26.163	AS12389 PJSC Rostelecom	`10.32ms` from Stockholm, SE
36.233.70.131	AS3462 Data Communication Business Group	`1.63ms` from Taichung, TW
174.95.24.67	AS577 Bell Canada	`2.55ms` from Toronto, CA
197.25.186.147	AS37671 3S INF	`1.81ms` from Tunis, TN
88.84.30.3	AS41549 Elektrizitaets- und Wasserwerk der Stadt Buchs SG	`2.26ms` from Zuerich, CH
54.39.203.179	AS16276 OVH SAS	`0.06ms` from Beauharnois, CA
100.40.96.99	AS701 Verizon Business	`2.96ms` from Boston, US
71.218.150.131	AS209 CenturyLink Communications, LLC	`2.04ms` from Denver, US
79.203.93.35	AS3320 Deutsche Telekom AG	`7.08ms` from Frankfurt am Main, DE
185.69.120.51	AS9304 HGC Global Communications Limited	`2.89ms` from Hong Kong, HK
114.217.171.3	AS140292 CHINATELECOM Jiangsu province Suzhou 5G network	`6.99ms` from Huai'an, CN

Traceroute

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

traceroute -a -n -q1 -f5 203.124.81.220

traceroute to 203.124.81.220 (203.124.81.220): 64 hops max, 52 byte packets

5 [AS5580] 203.190.230.37 1.047 ms

6 [AS9824] 203.165.0.57 1.018 ms

7 *

8 *

9 *

10 [AS4721] 203.124.81.220 82.942 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On January 9th 2026

What are IP address ranges?

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