Autonomous system
AS23820 RAKUTEN Rakuten Group, Inc.
Hosting RIPE
Summary
Rakuten Group
business enterprise cloud japan
RAKUTEN is the autonomous system for Rakuten Group, Inc., a Japanese technology conglomerate.
What it's used for
- The address space carries internal corporate infrastructure, evidenced by reverse DNS entries pointing to load balancers and development environments within the
rdcnw.netdomain (e.g.,lb-133-237-157-255.lbaas.jpw2a.rdcnw.net). - The AS announces 69,632 IPv4 addresses across 10 prefixes and 12 IPv6 prefixes, maintaining 14 observed neighbours; this ratio of substantial address inventory to a moderate peer count indicates a large internal corporate estate rather than a transit or access network.
Notable
- All registrants for the announced prefixes are listed as Japan Network Information Center (JPNIC) with netnames
RAKUTEN-NETorRakuten-CIDR-BLK-JP, aligning with the AS holder. - The address inventory is heavily concentrated in the
133.237.0.0/17block, which is subdivided into multiple smaller prefixes, reflecting a finely segmented internal network structure.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 3 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| BroadBand Internet eXchange Tokyo | Tokyo, Japan | 101.203.88.77 |
| JPIX Tokyo | Tokyo, Japan | 210.171.225.67 |
| Equinix Internet Exchange Osaka | Osaka, Japan | 203.190.227.45 |
Transit providers
8 upstream, 1 downstream and 14 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 10 prefixes · 69.63K addresses IPv6 12 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 22 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS23820- Registry name
- RAKUTEN
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2003-06-16
- Last changed
- 2022-02-18
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 17 with no ROA
- ROAs
- 0 authorising AS23820
- ASPA
- no ASPA record
- IRR
- 59% registered · 10 of 17 announcements
- Route objects
- 13 naming AS23820
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 436 networks and 1,771 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere