122.255.128.0/18

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

Nearby Ranges

BGP prefixes that overlap with 122.255.0.0/16

Range	ASN	Company	Num of IPs
122.255.0.0/18	AS18001	Dialog Telekom Plc	16,384
122.255.96.0/19	AS38322	TM TECHNOLOGY SERVICES SDN. BHD.	8,192
122.255.80.0/20	AS2914	NTT Taiwan Ltd.	4,096
122.255.76.0/22	AS24295	PacketFabric (Japan) Co., Ltd.	1,024

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

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

IP Address	ASN	Details
122.255.143.245	AS4721 JCOM Co., Ltd.	`11.09ms` from Tokyo, JP
122.255.189.131	AS4721 JCOM Co., Ltd.	`10.40ms` from Tokyo, JP
122.255.180.1	AS4721 JCOM Co., Ltd.	`3.83ms` from Tokyo, JP
122.255.188.1	AS4721 JCOM Co., Ltd.	`3.55ms` from Tokyo, JP
122.255.165.205	AS4721 JCOM Co., Ltd.	`12.33ms` from Tokyo, JP
122.255.140.1	AS4721 JCOM Co., Ltd.	`2.73ms` from Tokyo, JP
122.255.133.26	AS4721 JCOM Co., Ltd.	`12.59ms` from Tokyo, JP
122.255.137.6	AS4721 JCOM Co., Ltd.	`12.12ms` from Tokyo, JP
122.255.134.135	AS4721 JCOM Co., Ltd.	`11.20ms` from Tokyo, JP
122.255.161.109	AS4721 JCOM Co., Ltd.	`12.71ms` from Tokyo, JP
122.255.128.1	AS4721 JCOM Co., Ltd.	`3.74ms` from Tokyo, JP
122.255.156.1	AS4721 JCOM Co., Ltd.	`4.13ms` from Tokyo, JP
122.255.169.14	AS4721 JCOM Co., Ltd.	`12.10ms` from Tokyo, JP
122.255.160.1	AS4721 JCOM Co., Ltd.	`4.21ms` from Tokyo, JP
122.255.158.130	AS4721 JCOM Co., Ltd.	`11.44ms` from Tokyo, JP
122.255.183.22	AS4721 JCOM Co., Ltd.	`8.86ms` from Tokyo, JP
122.255.177.96	AS4721 JCOM Co., Ltd.	`7.05ms` from Tokyo, JP
122.255.136.1	AS4721 JCOM Co., Ltd.	`2.99ms` from Tokyo, JP
122.255.139.192	AS4721 JCOM Co., Ltd.	`12.19ms` from Tokyo, JP
122.255.152.1	AS4721 JCOM Co., Ltd.	`3.89ms` from Tokyo, JP
122.255.141.231	AS4721 JCOM Co., Ltd.	`11.95ms` from Tokyo, JP
122.255.168.1	AS4721 JCOM Co., Ltd.	`4.55ms` from Tokyo, JP
122.255.130.137	AS4721 JCOM Co., Ltd.	`13.86ms` from Tokyo, JP
122.255.176.1	AS4721 JCOM Co., Ltd.	`3.76ms` from Tokyo, JP
122.255.178.170	AS4721 JCOM Co., Ltd.	`11.55ms` 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
100.6.39.18	AS701 Verizon Business	`6.49ms` from Ashburn, US
35.92.128.178	AS16509 Amazon.com, Inc.	`0.30ms` from Boardman, US
34.77.51.146	AS396982 Google LLC	`0.14ms` from Brussels, BE
107.9.206.146	AS10796 Charter Communications Inc	`12.28ms` from Columbus, US
50.205.152.226	AS7922 Comcast Cable Communications, LLC	`1.36ms` from Denver, US
32.143.47.226	AS7018 AT&T Enterprises, LLC	`1.01ms` from Kansas City, US
77.120.97.34	AS35680 Volia-Cable LLC	`0.52ms` from Kyiv, UA
125.75.68.210	AS141998 China Telecom	`0.11ms` from Lanzhou, CN
83.52.148.130	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.41ms` from Madrid, ES
84.125.143.66	AS6739 VODAFONE ONO, S.A.	`16.06ms` from Madrid, ES
150.43.173.82	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`13.12ms` from Osaka, JP
164.163.74.82	AS265767 GRUPO INMA S.A	`5.05ms` from San Pedro Sula, HN
47.106.229.226	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.47ms` from Shenzhen, CN
18.176.80.114	AS16509 Amazon.com, Inc.	`0.17ms` from Tokyo, JP
168.220.18.2	AS8131 Pep Boys	`1.05ms` from Ashburn, US
87.151.238.162	AS3320 Deutsche Telekom AG	`5.01ms` from Berlin, DE
216.212.48.242	AS13977 Fidium	`2.47ms` from Boston, US
196.117.128.2	AS36925 MEDITELECOM	`2.02ms` from Casablanca, MA
182.140.181.130	AS38283 CHINANET SiChuan Telecom Internet Data Center	`3.54ms` from Chengdu, CN
113.205.17.178	AS4837 CHINA UNICOM China169 Backbone	`2.36ms` from Chongqing, CN
85.218.135.50	AS39642 Norlys Digital A/S	`15.23ms` from Copenhagen, DK
117.255.190.226	AS9829 National Internet Backbone	`7.84ms` from Delhi, IN
80.41.2.50	AS13285 TalkTalk Communications Limited	`2.58ms` from London, GB
194.74.215.210	AS2856 British Telecommunications PLC	`3.44ms` from London, GB
89.35.151.178	AS29119 AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONAL	`10.86ms` from Madrid, ES

Traceroute

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

traceroute -a -n -q1 -m5 122.255.151.224

traceroute to 122.255.151.224 (122.255.151.224): 5 hops max, 52 byte packets

1 [AS197834] 176.32.195.3 0.152 ms

2 [AS8932] 185.48.242.92 0.166 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Yerevan, AM

On December 28th 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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