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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
About Proton
Proton AG is a Swiss technology company offering privacy-focused online services and software. It is majority owned by the non-profit Proton Foundation.
Network profile
Source: PeeringDB →Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 62.169.136.0/23 | 512 |
0.0%
|
Proton AG | CH | — | — |
| 79.135.104.0/24 | 256 |
0.0%
|
Proton AG | CH | — | — |
| 185.159.157.0/24 | 256 |
0.0%
|
Proton AG | CH | — | — |
| 185.159.159.0/24 | 256 |
0.0%
|
Proton AG | CH | — | — |
| 194.126.177.0/24 | 256 |
0.0%
|
Proton AG | CH | — | — |
| 185.159.159.128/25 | 128 |
0.0%
|
Proton AG | CH | — | — |
| 185.159.159.0/26 | 64 |
0.0%
|
Proton AG | DE | — | — |
| 185.159.159.64/26 | 64 |
0.0%
|
Proton AG | CH | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS209103 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 |
|---|---|---|
| 185.159.157.0/24 | 6,518 | 2026-07-23 17:50:09 |
| 79.135.104.0/24 | 6,508 | 2026-07-23 17:50:09 |
| 62.169.137.0/24 | 6,499 | 2026-07-23 17:50:09 |
| 62.169.136.0/24 | 6,428 | 2026-07-23 17:50:09 |
| 194.126.177.0/24 | 5,761 | 2026-07-23 17:50:09 |
| 185.159.159.0/24 | 4,974 | 2026-07-23 17:52:05 |
Frequently Asked Questions
What is AS209103?
AS209103 is an Autonomous System Number assigned to Proton AG. 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 AS209103 announce?
AS209103 announces 1.5K IPv4 addresses distributed across 5 routed CIDR prefixes. The network is registered in Switzerland.
Who operates AS209103?
AS209103 is operated by Proton AG. The organization is based in Switzerland. You can view all IP ranges and related ASNs on the organization page.
What country is AS209103 registered in?
AS209103 is registered in Switzerland. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
