203.137.120.0/21

AS4694 · IDC Frontier Inc.

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Summary

Country	Japan
Domain
ASN	AS4694
Registry	JPNIC
ID	ASS423-1NET

WHOIS Details

inetnum:        203.137.124.0 - 203.137.127.255
netname:        ASS423-1NET
descr:          Assistup ,Inc
country:        JP
admin-c:        KA3452JP
tech-c:         KA3452JP
last-modified:  2021-07-16T02:38:02Z
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 are 57 domain names hosted across 21 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.137.122.188	online-adds.com	13
203.137.123.66	nihon-ecology.jp	1
203.137.124.154	uncsoftware.com	1
203.137.124.238	zeniren.net	1
203.137.123.216	r-zero.com	1
203.137.122.212	o2net.org	1
203.137.124.175	kamadoreg.net	1
203.137.124.165	sanf03-cloud.com	1
203.137.124.225	matsumura-noen.co.jp	1

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

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Pingable IPs

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

IP Address	ASN	Details
203.137.122.15	AS4694 IDC Frontier Inc.	`0.55ms` from Osaka, JP
203.137.123.12	AS4694 IDC Frontier Inc.	`0.45ms` from Osaka, JP
203.137.126.179	AS4694 IDC Frontier Inc.	`0.64ms` from Osaka, JP
203.137.125.103	AS4694 IDC Frontier Inc.	`0.85ms` from Osaka, JP
203.137.124.201	AS4694 IDC Frontier Inc.	`0.68ms` from Osaka, 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
2.132.112.165	AS9198 JSC Kazakhtelecom	`2.09ms` from Almaty, KZ
92.113.252.69	AS6079 RCN	`1.38ms` from Ashburn, US
74.124.170.53	AS22709 North State Telephone, LLC	`7.87ms` from Atlanta, US
140.189.68.69	AS2381 WiscNet	`2.10ms` from Chicago, US
183.135.23.245	AS4134 CHINANET-BACKBONE	`8.24ms` from Hangzhou, CN
113.184.195.69	AS45899 VNPT Corp	`5.93ms` from Hanoi, VN
196.214.136.165	AS3741 Dimension Data	`1.91ms` from Johannesburg, ZA
109.251.70.21	AS31148 Freenet LTD	`9.75ms` from Kyiv, UA
218.25.205.53	AS4837 CHINA UNICOM China169 Backbone	`8.05ms` from Liaoyang, CN
213.78.254.181	AS13285 TalkTalk Communications Limited	`6.18ms` from London, GB
80.102.47.37	AS12479 Orange Espagne SA	`3.13ms` from Madrid, ES
81.61.7.37	AS6739 VODAFONE ONO, S.A.	`4.85ms` from Madrid, ES
159.93.85.69	AS2875 Joint Institute for Nuclear Research	`3.54ms` from Moscow, RU
122.227.66.101	AS4134 CHINANET-BACKBONE	`7.28ms` from Nanchang, CN
58.210.89.149	AS4134 CHINANET-BACKBONE	`4.02ms` from Nanjing, CN
182.164.50.5	AS17511 OPTAGE Inc.	`2.35ms` from Osaka, JP
60.106.133.197	AS17676 SoftBank Corp.	`3.33ms` from Osaka, JP
189.39.16.197	AS16735 ALGAR TELECOM S/A	`0.30ms` from Osasco, BR
201.113.109.133	AS8151 UNINET	`10.73ms` from Santiago de Queretaro, MX
175.196.180.85	AS4766 Korea Telecom	`1.37ms` from Seoul, KR
110.8.218.165	AS9318 SK Broadband Co Ltd	`7.76ms` from Seoul, KR
124.163.144.5	AS4837 CHINA UNICOM China169 Backbone	`6.39ms` from Taiyuan, CN
126.43.221.181	AS17676 SoftBank Corp.	`3.37ms` from Tokyo, JP
31.28.98.229	AS48524 INTERRA telecommunications group, Ltd.	`1.39ms` from Yekaterinburg, RU
52.38.111.5	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, 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 203.137.126.151

traceroute to 203.137.126.151 (203.137.126.151): 64 hops max, 52 byte packets

5 [AS2519] 163.139.136.67 251.375 ms

6 *

7 *

8 *

9 *

10 [AS4694] 154.34.225.228 221.383 ms

11 [AS4694] 203.137.126.151 223.068 ms

Measurement taken from

IPinfo ProbeNet in Warsaw, PL

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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