AS5517
CSL Computer Service Langenbach GmbH
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
- Enterprise allocation +4
- Trust score 69 / 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 |
|---|---|---|---|---|---|---|
| 159.25.0.0/16 | 65.5K |
0.0%
|
CSL Computer Service Langenbach GmbH | DE | — | — |
| 194.245.0.0/16 | 65.5K |
0.6%
|
CSL Computer Service Langenbach GmbH | DE | — | — |
| 194.176.0.0/19 | 8.2K |
1.4%
|
CSL Computer Service Langenbach GmbH | DE | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS5517 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 |
|---|---|---|
| 194.245.0.0/16 | 4,104 | 2026-07-24 20:28:26 |
| 194.176.0.0/19 | 4,024 | 2026-07-24 20:28:26 |
| 159.25.0.0/16 | 4,005 | 2026-07-24 20:28:26 |
Frequently Asked Questions
What is AS5517?
AS5517 is an Autonomous System Number assigned to CSL Computer Service Langenbach GmbH. 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 AS5517 announce?
AS5517 announces 139.3K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in Germany.
Who operates AS5517?
AS5517 is operated by CSL Computer Service Langenbach GmbH. The organization is based in Germany. You can view all IP ranges and related ASNs on the organization page.
What country is AS5517 registered in?
AS5517 is registered in Germany. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
