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 : nic@mail.rakuten.com
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 25 domain names hosted across 17 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
133.237.180.217	alisaproject.com	3
133.237.180.159	rakuten.com.tw	2
133.237.128.144	rakuten-data-marketing.co.jp	1
133.237.184.154	r10.to	1
133.237.176.191	moraerumall.com	1
133.237.185.47	kumastock.com	1
133.237.179.23	spotlig.ht	1
133.237.128.229	jubilo-shop.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

2,903 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
133.237.130.94	AS23820 Rakuten Group, Inc.	`8.28ms` from Osaka, JP
133.237.192.4	AS23820 Rakuten Group, Inc.	`1.29ms` from Tokyo, JP
133.237.134.15	AS23820 Rakuten Group, Inc.	`1.22ms` from Tokyo, JP
133.237.190.13	AS23820 Rakuten Group, Inc.	`1.27ms` from Tokyo, JP
133.237.188.11	AS23820 Rakuten Group, Inc.	`1.73ms` from Tokyo, JP
133.237.180.12	AS23820 Rakuten Group, Inc.	`1.44ms` from Tokyo, JP
133.237.181.13	AS23820 Rakuten Group, Inc.	`1.83ms` from Tokyo, JP
133.237.132.79	AS23820 Rakuten Group, Inc.	`1.53ms` from Tokyo, JP
133.237.129.139	AS23820 Rakuten Group, Inc.	`1.22ms` from Tokyo, JP
133.237.138.36	AS23820 Rakuten Group, Inc.	`1.39ms` from Tokyo, JP
133.237.158.128	AS23820 Rakuten Group, Inc.	`1.67ms` from Osaka, JP
133.237.161.25	AS23820 Rakuten Group, Inc.	`1.25ms` from Tokyo, JP
133.237.176.206	AS23820 Rakuten Group, Inc.	`1.21ms` from Tokyo, JP
133.237.153.1	AS23820 Rakuten Group, Inc.	`1.47ms` from Osaka, JP
133.237.155.138	AS23820 Rakuten Group, Inc.	`1.44ms` from Osaka, JP
133.237.191.95	AS23820 Rakuten Group, Inc.	`1.27ms` from Tokyo, JP
133.237.174.52	AS23820 Rakuten Group, Inc.	`1.27ms` from Tokyo, JP
133.237.135.205	AS23820 Rakuten Group, Inc.	`1.23ms` from Tokyo, JP
133.237.156.19	AS23820 Rakuten Group, Inc.	`1.50ms` from Osaka, JP
133.237.157.105	AS23820 Rakuten Group, Inc.	`1.42ms` from Osaka, JP
133.237.160.74	AS23820 Rakuten Group, Inc.	`1.20ms` from Tokyo, JP
133.237.167.147	AS23820 Rakuten Group, Inc.	`1.38ms` from Tokyo, JP
133.237.136.7	AS23820 Rakuten Group, Inc.	`1.32ms` from Tokyo, JP
133.237.137.7	AS23820 Rakuten Group, Inc.	`1.33ms` from Tokyo, JP
133.237.184.101	AS23820 Rakuten Group, Inc.	`1.21ms` 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
194.171.70.65	AS1103 SURF B.V.	`0.44ms` from Amsterdam, NL
83.211.146.145	AS3302 Retelit Digital Services S.p.A.	`4.34ms` from Arezzo, IT
69.69.213.129	AS19901 Brightspeed	`8.17ms` from Ashburn, US
207.98.149.161	AS12083 WideOpenWest Finance LLC	`4.41ms` from Atlanta, US
108.239.164.129	AS7018 AT&T Enterprises, LLC	`17.45ms` from Atlanta, US
31.7.86.81	AS51020 Al-Jazeera Al-Arabiya Company for Communication and Internet LTD	`0.68ms` from Baghdad, IQ
202.44.13.1	AS9551 King Mongkut's University of Technology	`2.38ms` from Bangkok, TH
117.14.128.1	AS4837 CHINA UNICOM China169 Backbone	`6.69ms` from Beijing, CN
181.56.72.1	AS10620 Telmex Colombia S.A.	`2.13ms` from Bogota, CO
73.249.231.177	AS7922 Comcast Cable Communications, LLC	`5.70ms` from Boston, US
85.237.231.17	AS15962 Orange Slovensko a.s.	`1.19ms` from Bratislava, SK
190.17.232.1	AS7303 Telecom Argentina S.A.	`1.54ms` from Buenos Aires, AR
116.142.83.129	AS4837 CHINA UNICOM China169 Backbone	`2.34ms` from Changchun, CN
141.219.252.193	AS62618 Michigan Technological University	`11.08ms` from Chicago, US
80.167.167.1	AS3292 TDC Holding A/S	`4.42ms` from Copenhagen, DK
106.200.204.225	AS24560 Bharti Airtel Ltd., Telemedia Services	`6.65ms` from Delhi, IN
186.241.32.1	AS7738 V tal	`7.71ms` from Fortaleza, BR
91.134.101.209	AS16276 OVH SAS	`1.56ms` from Gravelines, FR
60.191.16.113	AS4134 CHINANET-BACKBONE	`4.02ms` from Hangzhou, CN
183.91.40.1	AS4134 CHINANET-BACKBONE	`1.68ms` from Hong Kong, HK
196.39.134.1	AS20011 Dimension Data	`0.52ms` from Johannesburg, ZA
60.22.77.81	AS4837 CHINA UNICOM China169 Backbone	`7.62ms` from Liaoyang, CN
82.16.251.1	AS5089 Virgin Media Limited	`1.78ms` from London, GB
209.58.216.17	AS14265 TPx Communications	`1.34ms` from Los Angeles, US
146.0.160.49	AS6661 POST Luxembourg	`0.27ms` from Luxembourg, LU

Traceroute

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

traceroute -a -n -q1 -f6 133.237.156.11

traceroute to 133.237.156.11 (133.237.156.11): 64 hops max, 52 byte packets

6 [] 210.173.184.91 0.917 ms

7 [AS23820] 202.72.49.115 0.555 ms

8 *

9 [AS23820] 133.237.247.161 2.48 ms

10 *

11 *

12 *

13 [AS23820] 133.237.156.11 1.724 ms

Measurement taken from

IPinfo ProbeNet in Osaka, JP

On November 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.

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