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
203.124.90.164	AS4721 JCOM Co., Ltd.	`8.34ms` from Tokyo, JP
203.124.74.228	AS4721 JCOM Co., Ltd.	`11.17ms` from Tokyo, JP
203.124.71.1	AS4721 JCOM Co., Ltd.	`8.69ms` 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
203.124.81.243	AS4721 JCOM Co., Ltd.	`10.81ms` from Tokyo, JP
203.124.91.199	AS4721 JCOM Co., Ltd.	`11.34ms` from Tokyo, JP
203.124.67.1	AS4721 JCOM Co., Ltd.	`2.59ms` from Tokyo, JP
203.124.83.115	AS4721 JCOM Co., Ltd.	`8.51ms` from Tokyo, JP
203.124.78.142	AS4721 JCOM Co., Ltd.	`11.51ms` from Tokyo, JP
203.124.79.65	AS4721 JCOM Co., Ltd.	`6.41ms` from Tokyo, JP
203.124.69.63	AS4721 JCOM Co., Ltd.	`9.78ms` from Tokyo, JP
203.124.87.31	AS4721 JCOM Co., Ltd.	`9.99ms` from Tokyo, JP
203.124.65.93	AS4721 JCOM Co., Ltd.	`11.23ms` from Tokyo, JP
203.124.86.104	AS4721 JCOM Co., Ltd.	`12.62ms` from Tokyo, JP
203.124.93.60	AS4721 JCOM Co., Ltd.	`8.44ms` from Tokyo, JP
203.124.64.1	AS4721 JCOM Co., Ltd.	`2.55ms` from Tokyo, JP
203.124.72.1	AS4721 JCOM Co., Ltd.	`2.46ms` from Tokyo, JP
203.124.95.56	AS4721 JCOM Co., Ltd.	`9.07ms` from Tokyo, JP
203.124.75.165	AS4721 JCOM Co., Ltd.	`11.79ms` from Tokyo, JP
203.124.85.124	AS4721 JCOM Co., Ltd.	`8.94ms` from Tokyo, JP
203.124.73.157	AS4721 JCOM Co., Ltd.	`5.31ms` from Tokyo, JP
203.124.82.93	AS4721 JCOM Co., Ltd.	`8.91ms` from Tokyo, JP
203.124.77.77	AS4721 JCOM Co., Ltd.	`9.95ms` from Tokyo, JP
203.124.94.186	AS4721 JCOM Co., Ltd.	`10.91ms` 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
62.78.228.147	AS16086 DNA Oyj	`5.91ms` from Helsinki, FI
218.23.184.195	AS4134 CHINANET-BACKBONE	`9.16ms` from Huai'an, CN
85.102.115.243	AS9121 Turk Telekomunikasyon Anonim Sirketi	`19.70ms` from Istanbul, TR
159.87.34.35	AS30449 State of Arizona	`4.80ms` from Phoenix, US
91.190.36.3	AS2588 SIA BITE Latvija	`1.17ms` from Riga, LV
220.149.138.3	AS38113 KUMC	`1.38ms` from Seoul, KR
140.207.201.67	AS17621 China Unicom Shanghai network	`3.52ms` from Shanghai, CN
85.25.179.131	AS29066 velia.net Internetdienste GmbH	`1.11ms` from Strasbourg, FR
126.93.131.115	AS17676 SoftBank Corp.	`12.66ms` from Tokyo, JP
113.147.189.131	AS2516 KDDI CORPORATION	`1.28ms` from Tokyo, JP
199.5.172.19	AS4043 Montana Internet Corporation	`8.82ms` from Calgary, CA
34.170.161.35	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
158.252.87.243	AS16509 Amazon.com, Inc.	`0.09ms` from Dubai, AE
115.220.195.35	AS4134 CHINANET-BACKBONE	`5.99ms` from Hangzhou, CN
13.127.159.131	AS16509 Amazon.com, Inc.	`0.14ms` from Mumbai, IN
202.220.164.179	AS9614 Oita Cable Telecom Co,ltd.	`11.93ms` from Osaka, JP
189.188.168.115	AS8151 UNINET	`3.92ms` from Santiago de Queretaro, MX
101.88.84.227	AS4812 China Telecom (Group)	`2.08ms` from Shanghai, CN
111.250.10.179	AS3462 Data Communication Business Group	`1.60ms` from Taipei, TW
157.25.25.3	AS12912 T-Mobile Polska S.A.	`0.87ms` from Warsaw, PL
174.168.86.67	AS7922 Comcast Cable Communications, LLC	`8.34ms` from Boston, US
20.140.110.195	AS8070 Microsoft Corporation	`0.68ms` from Boydton, US
41.124.177.83	AS16637 MTN SA	`19.72ms` from Cape Town, ZA
176.95.163.51	AS3209 Vodafone GmbH	`4.19ms` from Duesseldorf, DE
208.107.134.131	AS11232 Midcontinent Communications	`2.26ms` from Kansas City, US

Traceroute

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

traceroute -a -n -q1 -f5 203.124.85.7

traceroute to 203.124.85.7 (203.124.85.7): 64 hops max, 52 byte packets

5 [AS5580] 203.190.230.37 1.843 ms

6 [AS9824] 203.165.0.57 1.022 ms

7 *

8 *

9 *

10 [AS4721] 203.124.85.7 21.11 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On January 10th 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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