Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 3 internet exchanges: JPIX TOKYO, BBIX Tokyo, JPNAP Tokyo: Peering
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 202.79.240.0/21 | 2.0K |
5.4%
|
J-Stream Inc. | JP | — | — |
| 103.157.156.0/24 | 256 |
0.4%
|
J-Stream Inc. | JP | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS24253 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 202.79.240.0/21 | 6,878 | 2026-08-02 16:56:16 |
| 103.157.156.0/24 | 6,629 | 2026-08-02 16:56:16 |
Frequently Asked Questions
What is AS24253?
AS24253 is an Autonomous System Number assigned to J-Stream Inc.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS24253 announce?
AS24253 announces 2.3K IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Japan.
Who operates AS24253?
AS24253 is operated by J-Stream Inc.. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.
What country is AS24253 registered in?
AS24253 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
