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 26 domain names hosted across 18 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	earnesteyes.com	3
133.237.180.159	rakuten.com.tw	2
133.237.180.61	95lqn.tk	2
133.237.180.69	rakuten.co.jp	2
133.237.157.30	alisaproject.com	1
133.237.176.89	rakuten-toushin.co.jp	1
133.237.128.144	rakuten-data-marketing.co.jp	1
133.237.180.70	rakuten.net	1
133.237.128.2	infoseek.ne.jp	1
133.237.128.229	jubilo-shop.jp	1
133.237.184.154	r10.to	1
133.237.132.93	rakuten.jp	1
133.237.185.47	kumastock.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

2,910 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.	`9.03ms` from Osaka, JP
133.237.141.131	AS23820 Rakuten Group, Inc.	`1.42ms` from Tokyo, JP
133.237.138.36	AS23820 Rakuten Group, Inc.	`1.38ms` from Tokyo, JP
133.237.128.91	AS23820 Rakuten Group, Inc.	`1.22ms` from Tokyo, JP
133.237.132.39	AS23820 Rakuten Group, Inc.	`1.61ms` from Tokyo, JP
133.237.136.7	AS23820 Rakuten Group, Inc.	`1.31ms` from Tokyo, JP
133.237.129.80	AS23820 Rakuten Group, Inc.	`1.21ms` from Tokyo, JP
133.237.134.15	AS23820 Rakuten Group, Inc.	`1.25ms` from Tokyo, JP
133.237.135.4	AS23820 Rakuten Group, Inc.	`1.24ms` from Tokyo, JP
133.237.137.3	AS23820 Rakuten Group, Inc.	`1.35ms` from Tokyo, JP
133.237.174.52	AS23820 Rakuten Group, Inc.	`1.31ms` from Tokyo, JP
133.237.184.41	AS23820 Rakuten Group, Inc.	`1.21ms` from Tokyo, JP
133.237.253.253	AS23820 Rakuten Group, Inc.	`1.62ms` from Tokyo, JP
133.237.157.118	AS23820 Rakuten Group, Inc.	`1.42ms` from Osaka, JP
133.237.176.68	AS23820 Rakuten Group, Inc.	`1.21ms` from Tokyo, JP
133.237.181.39	AS23820 Rakuten Group, Inc.	`1.85ms` from Tokyo, JP
133.237.154.130	AS23820 Rakuten Group, Inc.	`1.48ms` from Osaka, JP
133.237.190.1	AS23820 Rakuten Group, Inc.	`1.30ms` from Tokyo, JP
133.237.247.171	AS23820 Rakuten Group, Inc.	`0.35ms` from Osaka, JP
133.237.185.52	AS23820 Rakuten Group, Inc.	`1.21ms` from Tokyo, JP
133.237.161.29	AS23820 Rakuten Group, Inc.	`1.22ms` from Tokyo, JP
133.237.153.6	AS23820 Rakuten Group, Inc.	`1.52ms` from Osaka, JP
133.237.193.7	AS23820 Rakuten Group, Inc.	`1.28ms` from Tokyo, JP
133.237.160.67	AS23820 Rakuten Group, Inc.	`1.23ms` from Tokyo, JP
133.237.156.13	AS23820 Rakuten Group, Inc.	`1.46ms` 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
75.109.234.17	AS19108 Optimum	`9.32ms` from Ashburn, US
170.176.248.1	AS16433 NORTH CENTRAL TELEPHONE COOPERATIVE CORPORATION	`9.97ms` from Atlanta, US
47.46.198.49	AS20115 Charter Communications LLC	`5.28ms` from Atlanta, US
2.81.241.1	AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	`4.21ms` from Braga, PT
217.113.51.49	AS29278 Rackhost Zrt.	`2.26ms` from Budapest, HU
111.9.249.1	AS9808 China Mobile Communications Group Co., Ltd.	`5.54ms` from Chengdu, CN
65.56.138.161	AS3356 Level 3 Parent, LLC	`1.23ms` from Chicago, US
188.183.58.1	AS3292 TDC Holding A/S	`1.12ms` from Copenhagen, DK
190.193.176.1	AS7303 Telecom Argentina S.A.	`1.45ms` from Cordoba, AR
24.116.114.1	AS11492 CABLE ONE, INC.	`17.21ms` from Dallas, US
125.20.46.49	AS9498 BHARTI Airtel Ltd.	`0.76ms` from Delhi, IN
67.148.202.33	AS209 CenturyLink Communications, LLC	`5.55ms` from Denver, US
73.153.198.81	AS7922 Comcast Cable Communications, LLC	`5.46ms` from Denver, US
82.29.204.65	AS205809 MEGA Cloud Services Limited	`0.46ms` from Frankfurt am Main, DE
91.178.205.1	AS5432 Proximus NV	`5.73ms` from Gravelines, FR
95.113.52.145	AS6805 Telefonica Germany GmbH & Co.OHG	`1.23ms` from Hamburg, DE
112.17.165.1	AS56041 China Mobile communications corporation	`4.72ms` from Hangzhou, CN
103.97.134.1	AS131414 Long Van Soft Solution JSC	`0.21ms` from Hanoi, VN
180.125.131.129	AS4134 CHINANET-BACKBONE	`6.74ms` from Huai'an, CN
114.230.190.1	AS4134 CHINANET-BACKBONE	`4.84ms` from Huai'an, CN
39.56.168.97	AS17557 Pakistan Telecommunication Company Limited	`16.98ms` from Islamabad, PK
88.251.0.1	AS47331 TTNet A.S.	`7.04ms` from Istanbul, TR
105.186.28.1	AS37457 Telkom SA Ltd.	`0.70ms` from Johannesburg, ZA
31.131.22.1	AS56851 PE Skurykhin Mukola Volodumurovuch	`3.45ms` from Khmelnytskyi, UA
86.11.12.1	AS5089 Virgin Media Limited	`3.85ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -f5 133.237.128.158

traceroute to 133.237.128.158 (133.237.128.158): 64 hops max, 52 byte packets

5 [] 210.171.225.67 0.768 ms

6 [AS23820] 202.72.49.107 0.426 ms

7 [AS23820] 202.72.48.174 1.453 ms

8 [AS23820] 202.72.48.66 1.375 ms

9 *

10 *

11 *

12 [AS23820] 133.237.128.158 1.259 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On November 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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