Autonomous System
AS23820 Rakuten Group, Inc.
BusinessActiveJapanAPNIC
AS23820 (RAKUTEN) is a business network operated by Rakuten Group, Inc. in Japan, registered with APNIC. It has 11 IPv4 prefixes with 143,616 addresses and 6 IPv6 prefixes, which makes it the 1,651st largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses143,616in 11 prefixes
IPv6 prefixes6≈ 8.5 × 10²⁸ addresses
Size rank#1,651of 82,200 active ASNs
Details
OrganizationRakuten Group, Inc.
AS nameRAKUTEN
Websiterakuten.com
Country Japan (JP)
Network typeBusiness
RegistryAPNIC
Abuse contacthostmaster@nic.ad.jp
Registered—
Last updated2024-08-15
IPv4 prefixes
11 prefixes · 143,616 addresses| Network | Addresses | First – last address |
|---|---|---|
| 133.237.0.0/16 | 65,536 | 133.237.0.0 – 133.237.255.255 |
| 133.237.0.0/17 | 32,768 | 133.237.0.0 – 133.237.127.255 |
| 133.237.128.0/17 | 32,768 | 133.237.128.0 – 133.237.255.255 |
| 202.72.48.0/20 | 4,096 | 202.72.48.0 – 202.72.63.255 |
| 202.72.48.0/21 | 2,048 | 202.72.48.0 – 202.72.55.255 |
| 202.72.56.0/21 | 2,048 | 202.72.56.0 – 202.72.63.255 |
| 202.72.48.0/22 | 1,024 | 202.72.48.0 – 202.72.51.255 |
| 202.72.52.0/22 | 1,024 | 202.72.52.0 – 202.72.55.255 |
| 202.72.56.0/22 | 1,024 | 202.72.56.0 – 202.72.59.255 |
| 202.72.60.0/22 | 1,024 | 202.72.60.0 – 202.72.63.255 |
| 133.237.248.0/24 | 256 | 133.237.248.0 – 133.237.248.255 |
133.237.0.0/16 133.237.0.0/17 133.237.128.0/17 202.72.48.0/20 202.72.48.0/21 202.72.56.0/21 202.72.48.0/22 202.72.52.0/22 202.72.56.0/22 202.72.60.0/22 133.237.248.0/24
IPv6 prefixes
6 prefixes- 2403:400::/32
- 2403:401::/36
- 2403:400:300::/40
- 2403:400:500::/40
- 2403:400:800::/40
- 2403:400:ff00::/40
2403:400::/32 2403:401::/36 2403:400:300::/40 2403:400:500::/40 2403:400:800::/40 2403:400:ff00::/40
Query AS23820 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS23820&key=YOUR_API_KEY"Any address in its prefixes resolves to AS23820, with or without a key:
curl "https://api.ipapi.is/?q=133.237.0.1"Largest networks in Japan
AS17676 SoftBank Mobile Corp.49,061,888 IPv4 addressesAS4713 NTT DOCOMO BUSINESS,Inc.28,624,896 IPv4 addressesAS2516 KDDI CORPORATION18,152,448 IPv4 addressesAS9824 JCOM Co., Ltd.10,315,776 IPv4 addressesAS2907 Authoritative information regarding AS Number8,960,512 IPv4 addressesAS17506 UCOM Corp.5,508,096 IPv4 addresses