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

Nearby Ranges

BGP prefixes that overlap with 203.137.0.0/16

No nearby ranges found.

Hosted domains

There are 67 domain names hosted across 32 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.137.124.228	ipad.or.at	19
203.137.122.188	j-seven.com	11
203.137.125.53	tsuri-navi.com	5
203.137.124.26	mtbt.biz	3
203.137.122.124	eroof.jp	2
203.137.125.202	homestaff.biz	1
203.137.124.24	dalianjifun.com	1
203.137.124.175	kamadoreg.net	1
203.137.124.82	cmj-mgr.net	1
203.137.123.174	bristasys.com	1
203.137.123.66	nihon-ecology.jp	1
203.137.124.69	drns-d1.com	1
203.137.124.154	uncsoftware.com	1
203.137.124.58	nagoya-access-clinic.jp	1
203.137.122.212	tottokou.net	1
203.137.124.238	zeniren.net	1
203.137.124.67	kf-mgmt.com	1
203.137.125.88	kagawa-dns.net	1
203.137.124.65	kyodofactory-staff.com	1
203.137.124.80	tatemuratest.com	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

Read more

Pingable IPs

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

IP Address	ASN	Details
203.137.125.118	AS4694 IDC Frontier Inc.	`0.73ms` from Osaka, JP
203.137.122.15	AS4694 IDC Frontier Inc.	`0.54ms` from Osaka, JP
203.137.126.115	AS4694 IDC Frontier Inc.	`0.66ms` from Osaka, JP
203.137.124.101	AS4694 IDC Frontier Inc.	`0.68ms` from Osaka, JP
203.137.123.13	AS4694 IDC Frontier Inc.	`0.46ms` 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
174.78.221.53	AS22773 Cox Communications Inc.	`7.99ms` from Atlanta, US
8.243.160.85	AS3356 Level 3 Parent, LLC	`0.96ms` from Bogota, CO
197.56.126.197	AS8452 TE-AS	`6.61ms` from Cairo, EG
69.61.228.53	AS6181 Cincinnati Bell Telephone Company LLC	`1.45ms` from Cincinnati, US
209.201.12.69	AS209 CenturyLink Communications, LLC	`0.56ms` from Denver, US
86.189.145.21	AS2856 British Telecommunications PLC	`5.27ms` from London, GB
217.15.59.5	AS25531 PJSC Rostelecom	`1.23ms` from Moscow, RU
107.162.97.245	AS55002 F5, Inc.	`0.38ms` from San Jose, US
200.182.208.21	AS4230 CLARO S.A.	`1.03ms` from Sao Paulo, BR
195.49.22.5	AS1836 green.ch AG	`0.59ms` from Zuerich, CH
50.223.73.5	AS7922 Comcast Cable Communications, LLC	`10.59ms` from Chicago, US
24.15.225.197	AS7922 Comcast Cable Communications, LLC	`5.41ms` from Chicago, US
94.15.49.133	AS5607 Sky UK Limited	`4.86ms` from Erith, GB
152.13.59.117	AS53785 University of North Carolina at Greensboro	`12.13ms` from Herndon, US
114.5.131.181	AS4761 INDOSAT Internet Network Provider	`1.09ms` from Jakarta, ID
24.116.33.213	AS11492 CABLE ONE, INC.	`4.50ms` from Phoenix, US
45.183.141.117	AS264824 COMPAÑIA ELECTROMECANICOS PARA EL DESARROLLO CSED SA	`2.12ms` from Quito, EC
216.127.48.5	AS11608 Accretive Networks	`0.20ms` from Seattle, US
218.161.76.181	AS3462 Data Communication Business Group	`1.84ms` from Taichung, TW
60.247.14.85	AS4847 China Networks Inter-Exchange	`2.49ms` from Tianjin, CN
213.17.128.133	AS12741 Netia SA	`1.63ms` from Wrocław, PL
95.21.204.21	AS12479 Orange Espagne SA	`8.38ms` from Zaragoza, ES
61.163.201.21	AS4837 CHINA UNICOM China169 Backbone	`3.52ms` from Zhengzhou, CN
14.2.7.133	AS7545 TPG Telecom Limited	`11.09ms` from Adelaide, AU
139.70.208.229	AS11975 The College of William and Mary	`7.68ms` from Ashburn, 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 203.137.124.167

traceroute to 203.137.124.167 (203.137.124.167): 64 hops max, 52 byte packets

5 [] 218.100.9.23 1.935 ms

6 *

7 *

8 *

9 [AS4694] 154.34.225.228 1.822 ms

10 [AS4694] 203.137.124.167 1.125 ms

Measurement taken from

IPinfo ProbeNet in Osaka, JP

On January 19th 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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