122.255.128.0/17

AS4721 · JCOM Co., Ltd.

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Summary

Country	Japan
Domain	jcom.co.jp
ASN	AS4721
Registry	JPNIC
ID	JCN-CIDR-BLK-JP

WHOIS Details

inetnum:        122.255.128.0 - 122.255.191.255
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
last-modified:  2021-09-27T23:45:21Z
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)
source:         JPNIC

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

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

IP Address	ASN	Details
122.255.137.6	AS4721 JCOM Co., Ltd.	`12.13ms` from Tokyo, JP
122.255.215.160	AS4721 JCOM Co., Ltd.	`11.59ms` from Tokyo, JP
122.255.153.82	AS4721 JCOM Co., Ltd.	`10.91ms` from Tokyo, JP
122.255.160.1	AS4721 JCOM Co., Ltd.	`3.75ms` from Tokyo, JP
122.255.181.52	AS4721 JCOM Co., Ltd.	`12.90ms` from Tokyo, JP
122.255.192.1	AS4721 JCOM Co., Ltd.	`3.09ms` from Tokyo, JP
122.255.244.1	AS4721 JCOM Co., Ltd.	`4.35ms` from Tokyo, JP
122.255.146.19	AS4721 JCOM Co., Ltd.	`13.02ms` from Tokyo, JP
122.255.167.234	AS4721 JCOM Co., Ltd.	`12.45ms` from Tokyo, JP
122.255.224.1	AS4721 JCOM Co., Ltd.	`3.78ms` from Tokyo, JP
122.255.211.237	AS4721 JCOM Co., Ltd.	`13.41ms` from Tokyo, JP
122.255.170.72	AS4721 JCOM Co., Ltd.	`10.54ms` from Tokyo, JP
122.255.193.241	AS4721 JCOM Co., Ltd.	`12.04ms` from Tokyo, JP
122.255.237.106	AS4721 JCOM Co., Ltd.	`12.52ms` from Tokyo, JP
122.255.236.1	AS4721 JCOM Co., Ltd.	`4.09ms` from Tokyo, JP
122.255.162.234	AS4721 JCOM Co., Ltd.	`12.19ms` from Tokyo, JP
122.255.241.68	AS4721 JCOM Co., Ltd.	`12.95ms` from Tokyo, JP
122.255.130.137	AS4721 JCOM Co., Ltd.	`13.28ms` from Tokyo, JP
122.255.202.73	AS4721 JCOM Co., Ltd.	`11.56ms` from Tokyo, JP
122.255.228.1	AS4721 JCOM Co., Ltd.	`3.58ms` from Tokyo, JP
122.255.158.88	AS4721 JCOM Co., Ltd.	`12.97ms` from Tokyo, JP
122.255.168.1	AS4721 JCOM Co., Ltd.	`4.62ms` from Tokyo, JP
122.255.246.46	AS4721 JCOM Co., Ltd.	`9.50ms` from Tokyo, JP
122.255.174.225	AS4721 JCOM Co., Ltd.	`14.63ms` from Tokyo, JP
122.255.152.1	AS4721 JCOM Co., Ltd.	`3.00ms` 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
71.86.64.1	AS20115 Charter Communications LLC	`8.09ms` from Atlanta, US
182.254.60.1	AS45090 Shenzhen Tencent Computer Systems Company Limited	`5.85ms` from Beijing, CN
177.98.176.1	AS18881 TELEFÔNICA BRASIL S.A	`8.06ms` from Belo Horizonte, BR
80.155.36.241	AS3320 Deutsche Telekom AG	`0.60ms` from Berlin, DE
190.159.92.1	AS10620 Telmex Colombia S.A.	`12.86ms` from Bogota, CO
186.31.4.1	AS19429 ETB - Colombia	`0.40ms` from Bogota, CO
181.235.186.145	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`9.00ms` from Bogota, CO
207.189.175.1	AS40718 Bee Line Cable	`10.23ms` from Boston, US
200.69.193.225	AS16814 NSS S.A.	`0.55ms` from Buenos Aires, AR
190.108.23.1	AS20255 Tecnowind S.A.	`9.36ms` from Buenos Aires, AR
209.239.53.1	AS399837 Altamaha Fiber	`10.79ms` from Charlotte, US
151.145.244.17	AS15117 Anheuser-Busch Companies Inc.	`12.30ms` from Chicago, US
12.220.118.97	AS7018 AT&T Enterprises, LLC	`5.68ms` from Chicago, US
12.226.183.241	AS7018 AT&T Enterprises, LLC	`8.07ms` from Chicago, US
188.183.20.1	AS3292 TDC Holding A/S	`2.38ms` from Copenhagen, DK
123.190.255.129	AS4837 CHINA UNICOM China169 Backbone	`12.14ms` from Dalian, CN
98.129.52.193	AS33070 Rackspace Hosting	`0.88ms` from Dallas, US
104.222.60.1	AS35986 Vyve Broadband	`9.85ms` from Dallas, US
3.3.25.161	AS16509 Amazon.com, Inc.	`0.19ms` from Denver, US
67.17.67.81	AS3549 Level 3 Parent, LLC	`0.46ms` from Denver, US
69.2.22.209	AS14103 ACD.net	`3.47ms` from Detroit, US
45.221.65.1	AS207184 TELCHAK GOLD VENTURES (PRIVATE) LIMITED	`0.62ms` from Frankfurt am Main, DE
64.35.153.65	AS46595 Penasco Valley Telecommunications	`18.78ms` from Greenwood Village, US
212.46.40.129	AS212616 K.M.A ADVANCED TECHNOLOGIES LTD	`1.20ms` from Haifa, IL
121.40.79.17	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.62ms` from Hangzhou, CN

Traceroute

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

traceroute -a -n -q1 122.255.158.187

traceroute to 122.255.158.187 (122.255.158.187): 64 hops max, 52 byte packets

1 [AS15169] 74.125.251.87 1.806 ms

2 *

3 [AS9824] 220.152.46.117 2.007 ms

4 *

5 *

6 *

7 [AS4721] 122.255.158.187 18.364 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On August 22nd 2025

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.

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