Autonomous system
AS209103 ProtonVPN Proton AG
Unclassified ARIN
Summary
Proton AG
vpn privacy swiss business
PROTONVPN is operated by Proton AG.
What it's used for
- The address space carries Proton's VPN and privacy infrastructure, evidenced by netnames such as
CH-PROTONVPN-2-20000801,PROTONVPN,ProtonVPN-CH2, andProtonVPN-CH1. - The AS announces 1536 IPv4 addresses across 5 prefixes and 3 IPv6 prefixes, with only 2 observed neighbours, indicating a small, self-contained network rather than a transit provider.
- Traffic from this AS consists of Proton's service endpoints, including VPN gateways and web/API services for its privacy products.
Notable
- Registrants consistently identify Proton entities, including
Proton NOC,Proton AG, andProton LIR admin, aligning with the AS holder. - Proton AG rebranded from ProtonMail to Proton in 2022 and acquired SimpleLogin, an email aliasing service.
- The inventory is finely subdivided into five distinct IPv4 prefixes, reflecting internal segmentation of the corporate estate.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-03, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 1.54K addresses IPv6 3 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CH | Switzerland | 8 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS209103- Registry name
- ProtonVPN
- Registrant
- ch-protonvpn-1-mnt
- Abuse contact
- abuse@protonvpn.com
- Registered
- 2019-04-05
- Last changed
- 2024-07-31
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Proton
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
- Website
- https://proton.me
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 10 valid, 0 with no ROA
- ROAs
- 12 authorising AS209103
- ASPA
- no ASPA record
- IRR
- 100% registered · 10 of 10 announcements
- Route objects
- 24 naming AS209103
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 448 networks and 1,851 prefixes, as published 2026-11-04. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere