AS208172
Proton AG
ASN
AS208172
Country
United States
IPv4 addresses
17,344
Prefixes (IPv4 / IPv6)
37 / 0
ASN Information
- ASN Number
- AS208172
- AS Name
- Proton AG
- Country
- United States
- IPv4 addresses
- 17,344
- IPv4 prefixes
- 37
- IPv6 prefixes
- 0
VPN & datacenter signals
- Known VPN prefixes
- 16
- Known datacenter prefixes
- 14
Counted from public VPN and datacenter lists. Check individual IPs with the API.
Largest announced prefixes
- 159.26.96.0/19
- 72.251.208.0/21
- 205.147.16.0/21
- 72.251.216.0/22
- 205.147.28.0/22
- 134.82.68.0/22
- 72.251.220.0/23
- 81.27.86.0/24
- 72.251.222.0/24
- 205.147.27.0/24
Source: public routing and registration data, updated 2026-10-28.
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