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 →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 103.133.44.0/22 | 1.0K |
0.0%
|
FastCould | TW | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS131637 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 |
|---|---|---|
| 103.133.44.0/22 | 6,168 | 2026-08-05 00:09:45 |
Frequently Asked Questions
What is AS131637?
AS131637 is an Autonomous System Number assigned to FastCould. 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 AS131637 announce?
AS131637 announces 1.0K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Taiwan.
Who operates AS131637?
AS131637 is operated by FastCould. The organization is based in Taiwan. You can view all IP ranges and related ASNs on the organization page.
What country is AS131637 registered in?
AS131637 is registered in Taiwan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
