AS59121
Asahi Kasei Networks Corporation
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
- Isp allocation +5
- Trust score 70 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 138.212.0.0/17 | 32.8K |
0.0%
|
Asahi Kasei Networks Corporation | JP | — | — |
| 202.11.64.0/24 | 256 |
4.3%
|
Asahi Kasei Networks Corporation | JP | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS59121 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 |
|---|---|---|
| 138.212.110.0/24 | 5,582 | 2026-07-28 23:24:29 |
| 202.11.64.0/24 | 4,752 | 2026-07-28 23:25:04 |
| 138.212.0.0/17 | 4,468 | 2026-07-28 23:24:35 |
Frequently Asked Questions
What is AS59121?
AS59121 is an Autonomous System Number assigned to Asahi Kasei Networks Corporation. 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 AS59121 announce?
AS59121 announces 33.0K IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Japan.
Who operates AS59121?
AS59121 is operated by Asahi Kasei Networks Corporation. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.
What country is AS59121 registered in?
AS59121 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
