SSL-Tools

SSL check results of proton.me

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Discover if the webservers of proton.me can be reached through a secure connection.

Summary

JSON Refresh

Report created Mon, 01 Sep 2025 17:35:53 +0000

The webservers of proton.me can be reached through a secure connection.

Servers

Hostname / IP address Certificates Protocol
proton.me
185.70.42.45
 proton.me
HSTS
unexpected EOF
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s

Certificates

First seen at:

CN=proton.me

Certificate chain
  • proton.me
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R10
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • proton.me
Alternative Names
  • *.pr.tn
  • *.proton.me
  • *.storage.proton.me
  • pr.tn
  • proton.me
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R10
validity period
Not valid before
2025-08-05
Not valid after
2025-11-03
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
E6:C1:AA:64:44:B0:82:80:D3:C2:7F:03:30:88:45:9C:3C:11:C5:31:44:36:0F:E5:8B:8D:73:AC:C5:5F:7B:26
SHA1
8A:53:CC:97:F8:6D:A9:18:AE:EB:12:17:74:0B:E9:34:18:31:AB:A5
X509v3 extensions
subjectKeyIdentifier
  • 44:9F:C2:8A:29:A4:88:CC:A5:FB:61:E6:89:D1:BE:71:59:64:BE:81
authorityKeyIdentifier
  • keyid:BB:BC:C3:47:A5:E4:BC:A9:C6:C3:A4:72:0C:10:8D:A2:35:E1:C8:E8
authorityInfoAccess
  • CA Issuers - URI:http://r10.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r10.c.lencr.org/83.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 0D:E1:F2:30:2B:D3:0D:C1:40:62:12:09:EA:55:2E:FC:
  • 47:74:7C:B1:D7:E9:30:EF:0E:42:1E:B4:7E:4E:AA:34
  • Timestamp : Aug 5 14:15:32.486 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:06:7E:DE:1E:18:F0:6F:8D:87:4A:E1:31:
  • 90:B7:40:5B:61:1B:0D:EF:92:E9:77:CC:C7:32:45:8C:
  • 1B:F6:66:3A:02:20:06:2F:45:24:8F:DD:E8:ED:7A:0B:
  • B9:0F:F4:32:D1:CA:7A:84:0D:00:51:69:B6:80:1C:E2:
  • AD:A3:A9:F7:09:C5
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 1A:04:FF:49:D0:54:1D:40:AF:F6:A0:C3:BF:F1:D8:C4:
  • 67:2F:4E:EC:EE:23:40:68:98:6B:17:40:2E:DC:89:7D
  • Timestamp : Aug 5 14:15:32.520 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:65:65:71:94:4C:0C:48:BB:11:40:50:AC:
  • 0D:47:1F:68:F7:83:80:1A:D5:03:19:77:04:08:3C:DA:
  • EE:B0:08:B5:02:20:1A:48:68:C9:07:1F:70:B2:0E:E2:
  • 60:6D:A8:F0:91:60:8A:2B:F9:4D:C0:07:1C:8C:58:91:
  • 6C:1A:42:61:CB:2E