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 |
|---|---|---|---|---|---|---|
| 91.221.104.0/23 | 512 |
0.0%
|
qSkills GmbH & Co. KG | DE | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS51839 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 |
|---|---|---|
| 91.221.104.0/23 | 12,116 | 2026-07-31 16:21:22 |
Frequently Asked Questions
What is AS51839?
AS51839 is an Autonomous System Number assigned to qSkills GmbH & Co. KG. 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 AS51839 announce?
AS51839 announces 512 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Germany.
Who operates AS51839?
AS51839 is operated by qSkills GmbH & Co. KG. The organization is based in Germany. You can view all IP ranges and related ASNs on the organization page.
What country is AS51839 registered in?
AS51839 is registered in Germany. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
