Autonomous system
AS24253 J-STREAM J-Stream Inc.
Hosting RIPE
Summary
J-Stream
business japan content
The AS handle J-STREAM is held by J-Stream Inc.
What it's used for
- The address space carries corporate infrastructure, evidenced by netnames
J-Stream-CIDR-BLK-JPandSTREAM-NETregistered to the Japan Network Information Center. - The AS announces 2304 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, while maintaining 22 observed neighbours; this ratio of moderate address space to a significant number of peers suggests a business network with substantial peering relationships rather than a pure transit provider.
Notable
- Registrants for both announced prefixes are listed as the Japan Network Information Center, which is consistent with the holder being a Japanese entity.
- J-Stream is a Japanese content provider, known for operating streaming services and digital content distribution platforms.
- The inventory consists of one /21 block and one /24 block in IPv4, alongside a /32 IPv6 prefix, indicating a focused corporate estate rather than a broad access network.
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 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| BroadBand Internet eXchange Tokyo | Tokyo, Japan | 101.203.88.21 |
| JPIX Tokyo | Tokyo, Japan | 210.171.224.206 |
Transit providers
8 upstream, 0 downstream and 13 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 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 2.30K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 3 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS24253- Registry name
- J-Stream
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2004-10-19
- Last changed
- 2020-09-10
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 67% valid · 2 valid, 1 with no ROA
- ROAs
- 2 authorising AS24253
- ASPA
- no ASPA record
- IRR
- 33% registered · 1 of 3 announcements
- Route objects
- 1 naming AS24253
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: 432 networks and 1,768 prefixes, as published 2026-10-12. 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