203.137.0.0/18

AS4694 · IDC Frontier Inc.

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Summary

Country	Japan
Domain	idcf.jp
ASN	AS4694
Registry	JPNIC
ID	IDCFNET-CIDR-BLK-JP

WHOIS Details

inetnum:        203.137.0.0 - 203.137.120.255
netname:        IDCFNet-CIDR-BLK-JP
descr:          IDC Frontier Inc.
remarks:        Email address for spam or abuse complaints : abuse@idc.jp
country:        JP
admin-c:        JP00169834
tech-c:         JP00169834
last-modified:  2020-06-13T03:27:32Z
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 380 domain names hosted across 140 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.137.14.194	enjoygarden.net	32
203.137.0.194	maruyama88.com	17
203.137.53.2	shimikiko.com	11
203.137.53.49	qipower.co.jp	6
203.137.53.53	aspex21.co.jp	4
203.137.23.2	noc.jp	4
203.137.54.59	jinkosiba.com	3
203.137.54.221	feru-guard.com	2
203.137.55.31	choimitena.com	2
203.137.53.215	life-complete.net	2
203.137.55.120	kg-net2005.jp	2
203.137.52.179	istreet.jp	2
203.137.55.162	ptc-work.net	2
203.137.53.29	clipo.ne.jp	1
203.137.55.30	victory-spec-cloud.net	1
203.137.55.238	nishimurashoukai.com	1
203.137.53.65	itsearchworks.jp	1
203.137.52.120	rizum-rss.com	1
203.137.52.72	ito-gumi-web.net	1
203.137.54.88	mierouki.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

Read more

Pingable IPs

1,555 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
203.137.37.3	AS4694 IDC Frontier Inc.	`0.84ms` from Osaka, JP
203.137.48.3	AS4694 IDC Frontier Inc.	`0.86ms` from Osaka, JP
203.137.3.3	AS4694 IDC Frontier Inc.	`0.93ms` from Osaka, JP
203.137.41.3	AS4694 IDC Frontier Inc.	`0.81ms` from Osaka, JP
203.137.15.76	AS4694 IDC Frontier Inc.	`1.03ms` from Osaka, JP
203.137.54.1	AS4694 IDC Frontier Inc.	`0.45ms` from Osaka, JP
203.137.40.3	AS4694 IDC Frontier Inc.	`0.80ms` from Osaka, JP
203.137.21.131	AS4694 IDC Frontier Inc.	`0.79ms` from Osaka, JP
203.137.32.2	AS4694 IDC Frontier Inc.	`0.61ms` from Osaka, JP
203.137.8.5	AS4694 IDC Frontier Inc.	`0.68ms` from Osaka, JP
203.137.49.131	AS4694 IDC Frontier Inc.	`0.81ms` from Osaka, JP
203.137.20.131	AS4694 IDC Frontier Inc.	`0.85ms` from Osaka, JP
203.137.59.3	AS4694 IDC Frontier Inc.	`0.87ms` from Osaka, JP
203.137.1.193	AS4694 IDC Frontier Inc.	`0.43ms` from Osaka, JP
203.137.53.168	AS4694 IDC Frontier Inc.	`0.62ms` from Osaka, JP
203.137.36.3	AS4694 IDC Frontier Inc.	`0.87ms` from Osaka, JP
203.137.14.3	AS4694 IDC Frontier Inc.	`0.87ms` from Osaka, JP
203.137.31.131	AS4694 IDC Frontier Inc.	`0.83ms` from Osaka, JP
203.137.55.35	AS4694 IDC Frontier Inc.	`0.63ms` from Osaka, JP
203.137.33.1	AS4694 IDC Frontier Inc.	`0.50ms` from Osaka, JP
203.137.23.19	AS4694 IDC Frontier Inc.	`0.51ms` from Osaka, JP
203.137.2.131	AS4694 IDC Frontier Inc.	`0.80ms` from Osaka, JP
203.137.57.3	AS4694 IDC Frontier Inc.	`0.92ms` from Osaka, JP
203.137.58.3	AS4694 IDC Frontier Inc.	`0.91ms` from Osaka, JP
203.137.22.1	AS4694 IDC Frontier Inc.	`0.59ms` 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
194.109.117.18	AS3265 KPN B.V.	`0.52ms` from Amsterdam, NL
110.190.69.34	AS4134 CHINANET-BACKBONE	`8.51ms` from Chengdu, CN
50.107.117.194	AS5650 Frontier Communications of America, Inc.	`10.95ms` from Chicago, US
185.233.33.2	AS211807 BANCA DE FINANTE SI COMERT S.A.	`0.48ms` from Chisinau, MD
67.211.163.2	AS16617 CISP	`3.75ms` from Columbus, US
62.66.197.98	AS9158 Telenor A/S	`1.75ms` from Copenhagen, DK
76.184.102.146	AS11427 Charter Communications Inc	`5.36ms` from Dallas, US
193.84.139.2	AS3320 Deutsche Telekom AG	`1.11ms` from Frankfurt am Main, DE
41.223.167.162	AS36976 Sonangol	`7.00ms` from Luanda, AO
80.59.192.242	AS3352 TELEFONICA DE ESPANA S.A.U.	`6.43ms` from Madrid, ES
187.167.232.2	AS6503 Axtel, S.A.B. de C.V.	`1.75ms` from Monterrey, MX
180.139.175.114	AS4134 CHINANET-BACKBONE	`0.56ms` from Nanning, CN
23.133.160.82	AS10882 Clarity Connect Inc	`6.26ms` from New York City, US
44.193.224.2	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
52.144.198.194	AS16509 Amazon.com, Inc.	`0.96ms` from San Jose, US
107.138.145.98	AS7018 AT&T Enterprises, LLC	`3.86ms` from San Jose, US
187.141.208.82	AS8151 UNINET	`4.90ms` from Santiago de Queretaro, MX
202.187.236.18	AS9930 TTNET-MY	`2.84ms` from Sepang, MY
159.143.94.242	AS8011 MongoDB, Inc.	`0.11ms` from Singapore, SG
77.85.184.2	AS8866 Vivacom Bulgaria EAD	`2.62ms` from Sofia, BG
219.242.130.2	AS4538 China Education and Research Network Center	`3.35ms` from Tianjin, CN
39.98.114.162	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.68ms` from Zhangjiakou, CN
80.242.219.242	AS35104 Jusan Mobile JSC	`0.65ms` from Almaty, KZ
84.85.221.18	AS1136 KPN B.V.	`2.46ms` from Amsterdam, NL
75.160.220.18	AS19901 Brightspeed	`3.71ms` 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 -f2 203.137.20.130

traceroute to 203.137.20.130 (203.137.20.130): 64 hops max, 52 byte packets

2 [AS63997] 121.50.40.254 0.43 ms

3 [] 210.173.184.133 8.117 ms

4 *

5 *

6 *

7 *

8 [AS4694] 203.137.20.130 127.325 ms

Measurement taken from

IPinfo ProbeNet in Nagano, 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.

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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