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 |
|---|---|---|---|---|---|---|
| 217.156.15.0/24 | 256 |
0.0%
|
Gs1 Data Systems Srl | RO | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS203721 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 |
|---|---|---|
| 217.156.15.0/24 | 15,945 | 2026-07-29 04:37:25 |
Frequently Asked Questions
What is AS203721?
AS203721 is an Autonomous System Number assigned to Gs1 Data Systems Srl. 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 AS203721 announce?
AS203721 announces 256 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Romania.
Who operates AS203721?
AS203721 is operated by Gs1 Data Systems Srl. The organization is based in Romania. You can view all IP ranges and related ASNs on the organization page.
What country is AS203721 registered in?
AS203721 is registered in Romania. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
