133.237.128.0/17

AS23820 · Rakuten Group, Inc.

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Summary

Country	Japan
Domain	rakuten.co.jp
ASN	AS23820
Parent Range	133.237.0.0/16
Registry	JPNIC
ID	RAKUTEN-CIDR-BLK-JP

WHOIS Details

inetnum:        133.237.0.0 - 133.237.255.255
netname:        Rakuten-CIDR-BLK-JP
descr:          Rakuten Group, Inc.
remarks:        Email address for spam or abuse complaints : [email protected]
country:        JP
admin-c:        JP00179607
tech-c:         JP00179607
last-modified:  2022-01-20T02:49:38Z
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

Overlapping Ranges

BGP prefixes that contain 133.237.128.0/17

Range	ASN	Company	Num of IPs
133.237.0.0/16	AS23820	Rakuten Group, Inc.	65,536

Nearby Ranges

BGP prefixes that overlap with 133.237.0.0/16

Range	ASN	Company	Num of IPs
133.237.0.0/16	AS23820	Rakuten Group, Inc.	65,536

Hosted domains

There are 26 domain names hosted across 19 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
133.237.179.46	infoseek.co.jp	5
133.237.157.30	rinki.eu	2
133.237.180.61	qfwhc.tk	2
133.237.128.2	infoseek.ne.jp	1
133.237.180.185	katogolf.com	1
133.237.179.23	spotlig.ht	1
133.237.132.93	rakuten.jp	1
133.237.185.47	kumastock.com	1
133.237.182.225	rakuten.co.jp	1
133.237.176.191	moraerumall.com	1
133.237.176.89	rakuten-toushin.co.jp	1
133.237.128.229	jubilo-shop.jp	1
133.237.180.70	rakuten.net	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

2,926 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
133.237.132.126	AS23820 Rakuten Group, Inc.	`1.51ms` from Tokyo, JP
133.237.128.209	AS23820 Rakuten Group, Inc.	`1.20ms` from Tokyo, JP
133.237.130.94	AS23820 Rakuten Group, Inc.	`9.10ms` from Osaka, JP
133.237.138.36	AS23820 Rakuten Group, Inc.	`1.37ms` from Tokyo, JP
133.237.129.80	AS23820 Rakuten Group, Inc.	`1.21ms` from Tokyo, JP
133.237.137.1	AS23820 Rakuten Group, Inc.	`1.35ms` from Tokyo, JP
133.237.134.8	AS23820 Rakuten Group, Inc.	`1.21ms` from Tokyo, JP
133.237.141.130	AS23820 Rakuten Group, Inc.	`1.42ms` from Tokyo, JP
133.237.135.68	AS23820 Rakuten Group, Inc.	`1.22ms` from Tokyo, JP
133.237.136.129	AS23820 Rakuten Group, Inc.	`1.33ms` from Tokyo, JP
133.237.192.12	AS23820 Rakuten Group, Inc.	`1.30ms` from Tokyo, JP
133.237.247.35	AS23820 Rakuten Group, Inc.	`0.34ms` from Tokyo, JP
133.237.190.140	AS23820 Rakuten Group, Inc.	`1.27ms` from Tokyo, JP
133.237.178.85	AS23820 Rakuten Group, Inc.	`1.24ms` from Tokyo, JP
133.237.175.23	AS23820 Rakuten Group, Inc.	`1.27ms` from Tokyo, JP
133.237.153.6	AS23820 Rakuten Group, Inc.	`1.51ms` from Osaka, JP
133.237.176.10	AS23820 Rakuten Group, Inc.	`1.20ms` from Tokyo, JP
133.237.184.151	AS23820 Rakuten Group, Inc.	`1.21ms` from Tokyo, JP
133.237.156.19	AS23820 Rakuten Group, Inc.	`1.45ms` from Osaka, JP
133.237.191.100	AS23820 Rakuten Group, Inc.	`1.25ms` from Tokyo, JP
133.237.154.132	AS23820 Rakuten Group, Inc.	`1.48ms` from Osaka, JP
133.237.158.128	AS23820 Rakuten Group, Inc.	`1.60ms` from Osaka, JP
133.237.179.115	AS23820 Rakuten Group, Inc.	`1.20ms` from Tokyo, JP
133.237.167.144	AS23820 Rakuten Group, Inc.	`1.34ms` from Tokyo, JP
133.237.160.74	AS23820 Rakuten Group, Inc.	`1.22ms` 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
89.99.251.1	AS33915 Vodafone Libertel B.V.	`4.33ms` from Amsterdam, NL
63.172.69.81	AS174 Cogent Communications, LLC	`3.97ms` from Ashburn, US
190.182.179.129	AS27983 Red Intercable Digital S.A.	`18.06ms` from Asuncion, PY
49.231.203.177	AS45458 SBN-ISP/AWN-ISP and SBN-NIX/AWN-NIX	`0.96ms` from Bangkok, TH
223.206.58.113	AS45758 Triple T Broadband Public Company Limited	`3.29ms` from Bangkok, TH
188.2.144.1	AS31042 Serbia BroadBand-Srpske Kablovske mreze d.o.o.	`2.98ms` from Belgrade, RS
187.109.6.193	AS28198 SEMPRE TELECOMUNICACOES LTDA	`1.99ms` from Belo Horizonte, BR
193.6.33.193	AS1955 KIFU (Governmental Info Tech Development Agency)	`7.61ms` from Budapest, HU
220.169.240.1	AS4134 CHINANET-BACKBONE	`3.40ms` from Chenzhou, CN
67.186.83.129	AS7922 Comcast Cable Communications, LLC	`6.10ms` from Chicago, US
87.57.200.1	AS3292 TDC Holding A/S	`8.21ms` from Copenhagen, DK
128.76.235.1	AS3292 TDC Holding A/S	`3.89ms` from Copenhagen, DK
2.108.204.1	AS3292 TDC Holding A/S	`3.57ms` from Copenhagen, DK
62.198.4.1	AS3308 Telia Company AB	`2.74ms` from Copenhagen, DK
122.160.150.33	AS24560 Bharti Airtel Ltd., Telemedia Services	`1.01ms` from Delhi, IN
37.201.136.1	AS3209 Vodafone GmbH	`3.33ms` from Duesseldorf, DE
91.1.243.145	AS3320 Deutsche Telekom AG	`5.19ms` from Frankfurt am Main, DE
212.15.202.1	AS8925 teuto.net Netzdienste GmbH	`6.86ms` from Frankfurt am Main, DE
91.217.221.1	AS57488 Avena Technologie Beata Szulc	`0.56ms` from Gdansk, PL
119.127.128.1	AS4134 CHINANET-BACKBONE	`3.55ms` from Guangzhou, CN
181.115.46.33	AS14754 TELECOMUNICACIONES DE GUATEMALA, SOCIEDAD ANONIMA	`6.49ms` from Guatemala City, GT
190.154.160.1	AS14522 SERVICIOS DE TELECOMUNICACIONES SETEL S.A. (XTRIM EC)	`3.04ms` from Guayaquil, EC
103.99.247.1	AS135923 SCTV INFRASTRUCTURE BUSINESS INVESMENT COMPANY LIMITED	`0.97ms` from Ho Chi Minh City, VN
116.102.128.49	AS24086 Viettel Corporation	`0.94ms` from Ho Chi Minh City, VN
70.114.110.161	AS11427 Charter Communications Inc	`7.88ms` from Houston, 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 -m9 133.237.221.182

traceroute to 133.237.221.182 (133.237.221.182): 9 hops max, 52 byte packets

2 [AS20278] 64.44.164.129 0.142 ms

3 *

4 *

5 *

6 [AS174] 154.54.40.110 13.626 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Jacksonville, US

On December 6th 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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