SSL Report: mail.whosts.pl (109.95.206.162)
Assessed on:  Thu, 11 Dec 2025 19:23:58 UTC | Clear cache

Due to a recently discovered bug in Apple's code, your browser is exposed to MITM attacks. Click here for more information.

Summary
Overall Rating
A
0
20
40
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100
Certificate
 
Protocol Support
 
Key Exchange
 
Cipher Strength
 

Visit our documentation page for more information, configuration guides, and books. Known issues are documented here.
This server's certificate is not trusted by Java trust store (see below for details).
This server supports TLS 1.3.  MORE INFO »
DNS Certification Authority Authorization (CAA) Policy found for this domain.  MORE INFO »
Certificate #1: RSA 2048 bits (SHA256withRSA)
Server Key and Certificate #1
Subject *.whosts.pl
Fingerprint SHA256: f7a902be6747d5deda7168ed32a072a49ca146ad06bf3f528cad21d5f41240a7
Pin SHA256: LN6N4QTEiwxyS4vW6pQZ9qCbH9jhI7B6LopU1lutB5o=
Common names *.whosts.pl
Alternative names *.whosts.pl whosts.pl
Serial Number 3f0e401ca06e46ffd1171a5914f1274b
Valid from Tue, 09 Dec 2025 16:08:48 UTC
Valid until Wed, 09 Dec 2026 16:08:47 UTC (expires in 11 months and 27 days)
Key RSA 2048 bits (e 65537)
Weak key (Debian) No
Issuer Certum DV TLS G2 R39 CA
AIA: http://certumdvtlsg2r39ca.repository.certum.pl/certumdvtlsg2r39ca.cer
Signature algorithm SHA256withRSA
Extended Validation No
Certificate Transparency Yes (certificate)
OCSP Must Staple No
Revocation information CRL, OCSP
CRL: http://certumdvtlsg2r39ca.crl.certum.pl/certumdvtlsg2r39ca.crl
OCSP: http://certumdvtlsg2r39ca.ocsp-certum.com
Revocation status Good (not revoked)
CRL ERROR: IOException occurred
DNS CAA Yes
policy host: whosts.pl
issuewild: letsencrypt.org flags:0
issue: certum.pl flags:0
issuewild: certum.pl flags:0
issue: letsencrypt.org flags:0
Trusted Yes
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 3 (4982 bytes)
Chain issues Contains anchor
#2
Subject Certum DV TLS G2 R39 CA
Fingerprint SHA256: 83c0a5a76844c840dfaf820ffd02adf6573a26823ef6af758a3384a0ac044083
Pin SHA256: 92oK29/qv5N8xocT/H9kxxVqihg3OD2rlooJW9f7L3Y=
Valid until Sun, 05 Jun 2039 07:41:22 UTC (expires in 13 years and 5 months)
Key RSA 4096 bits (e 65537)
Issuer Certum Trusted Root CA
Signature algorithm SHA512withRSA
#3
Subject Certum Trusted Root CA   In trust store
Fingerprint SHA256: fe7696573855773e37a95e7ad4d9cc96c30157c15d31765ba9b15704e1ae78fd
Pin SHA256: aB3EgsKWyEAsbrsg5oMJo7yEZSOuNLmEqE7ml6MxLbc=
Valid until Mon, 16 Mar 2043 12:10:13 UTC (expires in 17 years and 3 months)
Key RSA 4096 bits (e 65537)
Issuer Certum Trusted Root CA   Self-signed
Signature algorithm SHA512withRSA


Certification Paths
Path #1: Trusted
1 Sent by server *.whosts.pl
Fingerprint SHA256: f7a902be6747d5deda7168ed32a072a49ca146ad06bf3f528cad21d5f41240a7
Pin SHA256: LN6N4QTEiwxyS4vW6pQZ9qCbH9jhI7B6LopU1lutB5o=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server Certum DV TLS G2 R39 CA
Fingerprint SHA256: 83c0a5a76844c840dfaf820ffd02adf6573a26823ef6af758a3384a0ac044083
Pin SHA256: 92oK29/qv5N8xocT/H9kxxVqihg3OD2rlooJW9f7L3Y=

RSA 4096 bits (e 65537) / SHA512withRSA
CRL ERROR: IOException occurred
3 Sent by server
In trust store
Certum Trusted Root CA   Self-signed
Fingerprint SHA256: fe7696573855773e37a95e7ad4d9cc96c30157c15d31765ba9b15704e1ae78fd
Pin SHA256: aB3EgsKWyEAsbrsg5oMJo7yEZSOuNLmEqE7ml6MxLbc=

RSA 4096 bits (e 65537) / SHA512withRSA
Path #1: Trusted
1 Sent by server *.whosts.pl
Fingerprint SHA256: f7a902be6747d5deda7168ed32a072a49ca146ad06bf3f528cad21d5f41240a7
Pin SHA256: LN6N4QTEiwxyS4vW6pQZ9qCbH9jhI7B6LopU1lutB5o=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server Certum DV TLS G2 R39 CA
Fingerprint SHA256: 83c0a5a76844c840dfaf820ffd02adf6573a26823ef6af758a3384a0ac044083
Pin SHA256: 92oK29/qv5N8xocT/H9kxxVqihg3OD2rlooJW9f7L3Y=

RSA 4096 bits (e 65537) / SHA512withRSA
CRL ERROR: IOException occurred
3 Sent by server
In trust store
Certum Trusted Root CA   Self-signed
Fingerprint SHA256: fe7696573855773e37a95e7ad4d9cc96c30157c15d31765ba9b15704e1ae78fd
Pin SHA256: aB3EgsKWyEAsbrsg5oMJo7yEZSOuNLmEqE7ml6MxLbc=

RSA 4096 bits (e 65537) / SHA512withRSA
Path #1: Trusted
1 Sent by server *.whosts.pl
Fingerprint SHA256: f7a902be6747d5deda7168ed32a072a49ca146ad06bf3f528cad21d5f41240a7
Pin SHA256: LN6N4QTEiwxyS4vW6pQZ9qCbH9jhI7B6LopU1lutB5o=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server Certum DV TLS G2 R39 CA
Fingerprint SHA256: 83c0a5a76844c840dfaf820ffd02adf6573a26823ef6af758a3384a0ac044083
Pin SHA256: 92oK29/qv5N8xocT/H9kxxVqihg3OD2rlooJW9f7L3Y=

RSA 4096 bits (e 65537) / SHA512withRSA
CRL ERROR: IOException occurred
3 Sent by server
In trust store
Certum Trusted Root CA   Self-signed
Fingerprint SHA256: fe7696573855773e37a95e7ad4d9cc96c30157c15d31765ba9b15704e1ae78fd
Pin SHA256: aB3EgsKWyEAsbrsg5oMJo7yEZSOuNLmEqE7ml6MxLbc=

RSA 4096 bits (e 65537) / SHA512withRSA
Path #1: Not trusted (path does not chain to a trusted anchor)
1 Sent by server *.whosts.pl
Fingerprint SHA256: f7a902be6747d5deda7168ed32a072a49ca146ad06bf3f528cad21d5f41240a7
Pin SHA256: LN6N4QTEiwxyS4vW6pQZ9qCbH9jhI7B6LopU1lutB5o=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server Certum DV TLS G2 R39 CA
Fingerprint SHA256: 83c0a5a76844c840dfaf820ffd02adf6573a26823ef6af758a3384a0ac044083
Pin SHA256: 92oK29/qv5N8xocT/H9kxxVqihg3OD2rlooJW9f7L3Y=

RSA 4096 bits (e 65537) / SHA512withRSA
CRL ERROR: IOException occurred
3 Sent by server
  Not in trust store
Certum Trusted Root CA   Self-signed
Fingerprint SHA256: fe7696573855773e37a95e7ad4d9cc96c30157c15d31765ba9b15704e1ae78fd
Pin SHA256: aB3EgsKWyEAsbrsg5oMJo7yEZSOuNLmEqE7ml6MxLbc=

RSA 4096 bits (e 65537) / SHA512withRSA
Path #1: Trusted
1 Sent by server *.whosts.pl
Fingerprint SHA256: f7a902be6747d5deda7168ed32a072a49ca146ad06bf3f528cad21d5f41240a7
Pin SHA256: LN6N4QTEiwxyS4vW6pQZ9qCbH9jhI7B6LopU1lutB5o=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server Certum DV TLS G2 R39 CA
Fingerprint SHA256: 83c0a5a76844c840dfaf820ffd02adf6573a26823ef6af758a3384a0ac044083
Pin SHA256: 92oK29/qv5N8xocT/H9kxxVqihg3OD2rlooJW9f7L3Y=

RSA 4096 bits (e 65537) / SHA512withRSA
CRL ERROR: IOException occurred
3 Sent by server
In trust store
Certum Trusted Root CA   Self-signed
Fingerprint SHA256: fe7696573855773e37a95e7ad4d9cc96c30157c15d31765ba9b15704e1ae78fd
Pin SHA256: aB3EgsKWyEAsbrsg5oMJo7yEZSOuNLmEqE7ml6MxLbc=

RSA 4096 bits (e 65537) / SHA512withRSA

Click here to expand

Configuration
Protocols
TLS 1.3 Yes
TLS 1.2 No
TLS 1.1 No
TLS 1.0 No
SSL 3 No
SSL 2 No


Cipher Suites
# TLS 1.3 (suites in server-preferred order)
TLS_AES_256_GCM_SHA384 (0x1302)   ECDH x25519 (eq. 3072 bits RSA)   FS 256
TLS_CHACHA20_POLY1305_SHA256 (0x1303)   ECDH x25519 (eq. 3072 bits RSA)   FS 256
TLS_AES_128_GCM_SHA256 (0x1301)   ECDH x25519 (eq. 3072 bits RSA)   FS 128


Handshake Simulation
Android 8.1 -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Android 9.0 -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Chrome 69 / Win 7  R Server sent fatal alert: protocol_version
Chrome 70 / Win 10 -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Chrome 80 / Win 10  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Firefox 62 / Win 7  R Server sent fatal alert: protocol_version
Firefox 73 / Win 10  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Java 11.0.3 -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Java 12.0.1 -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
OpenSSL 1.1.0k  R Server sent fatal alert: protocol_version
OpenSSL 1.1.1c  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Safari 12.1.2 / MacOS 10.14.6 Beta  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Safari 12.1.1 / iOS 12.3.1  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
# Not simulated clients (Protocol mismatch)
Android 2.3.7   No SNI 2 Protocol mismatch (not simulated)
Android 4.0.4 Protocol mismatch (not simulated)
Android 4.1.1 Protocol mismatch (not simulated)
Android 4.2.2 Protocol mismatch (not simulated)
Android 4.3 Protocol mismatch (not simulated)
Android 4.4.2 Protocol mismatch (not simulated)
Android 5.0.0 Protocol mismatch (not simulated)
Android 6.0 Protocol mismatch (not simulated)
Android 7.0 Protocol mismatch (not simulated)
Android 8.0 Protocol mismatch (not simulated)
Baidu Jan 2015 Protocol mismatch (not simulated)
BingPreview Jan 2015 Protocol mismatch (not simulated)
Chrome 49 / XP SP3 Protocol mismatch (not simulated)
Firefox 31.3.0 ESR / Win 7 Protocol mismatch (not simulated)
Firefox 47 / Win 7  R Protocol mismatch (not simulated)
Firefox 49 / XP SP3 Protocol mismatch (not simulated)
Googlebot Feb 2018 Protocol mismatch (not simulated)
IE 6 / XP   No FS 1   No SNI 2 Protocol mismatch (not simulated)
IE 7 / Vista Protocol mismatch (not simulated)
IE 8 / XP   No FS 1   No SNI 2 Protocol mismatch (not simulated)
IE 8-10 / Win 7  R Protocol mismatch (not simulated)
IE 11 / Win 7  R Protocol mismatch (not simulated)
IE 11 / Win 8.1  R Protocol mismatch (not simulated)
IE 10 / Win Phone 8.0 Protocol mismatch (not simulated)
IE 11 / Win Phone 8.1  R Protocol mismatch (not simulated)
IE 11 / Win Phone 8.1 Update  R Protocol mismatch (not simulated)
IE 11 / Win 10  R Protocol mismatch (not simulated)
Edge 15 / Win 10  R Protocol mismatch (not simulated)
Edge 16 / Win 10  R Protocol mismatch (not simulated)
Edge 18 / Win 10  R Protocol mismatch (not simulated)
Edge 13 / Win Phone 10  R Protocol mismatch (not simulated)
Java 6u45   No SNI 2 Protocol mismatch (not simulated)
Java 7u25 Protocol mismatch (not simulated)
Java 8u161 Protocol mismatch (not simulated)
OpenSSL 0.9.8y Protocol mismatch (not simulated)
OpenSSL 1.0.1l  R Protocol mismatch (not simulated)
OpenSSL 1.0.2s  R Protocol mismatch (not simulated)
Safari 5.1.9 / OS X 10.6.8 Protocol mismatch (not simulated)
Safari 6 / iOS 6.0.1 Protocol mismatch (not simulated)
Safari 6.0.4 / OS X 10.8.4  R Protocol mismatch (not simulated)
Safari 7 / iOS 7.1  R Protocol mismatch (not simulated)
Safari 7 / OS X 10.9  R Protocol mismatch (not simulated)
Safari 8 / iOS 8.4  R Protocol mismatch (not simulated)
Safari 8 / OS X 10.10  R Protocol mismatch (not simulated)
Safari 9 / iOS 9  R Protocol mismatch (not simulated)
Safari 9 / OS X 10.11  R Protocol mismatch (not simulated)
Safari 10 / iOS 10  R Protocol mismatch (not simulated)
Safari 10 / OS X 10.12  R Protocol mismatch (not simulated)
Apple ATS 9 / iOS 9  R Protocol mismatch (not simulated)
Yahoo Slurp Jan 2015 Protocol mismatch (not simulated)
YandexBot Jan 2015 Protocol mismatch (not simulated)

Click here to expand

(1) Clients that do not support Forward Secrecy (FS) are excluded when determining support for it.
(2) No support for virtual SSL hosting (SNI). Connects to the default site if the server uses SNI.
(3) Only first connection attempt simulated. Browsers sometimes retry with a lower protocol version.
(R) Denotes a reference browser or client, with which we expect better effective security.
(All) We use defaults, but some platforms do not use their best protocols and features (e.g., Java 6 & 7, older IE).
(All) Certificate trust is not checked in handshake simulation, we only perform TLS handshake.


Protocol Details
ROBOT (vulnerability) No (more info)
Forward Secrecy Yes (with most browsers)   ROBUST (more info)
ALPN Yes   http/1.1
Session resumption (tickets) No
OCSP stapling No
Strict Transport Security (HSTS) No
HSTS Preloading Not in: Chrome  Edge  Firefox  IE 
Public Key Pinning (HPKP) No (more info)
Public Key Pinning Report-Only No
Public Key Pinning (Static) No (more info)
Supported Named Groups x25519, secp256r1, secp384r1, secp521r1 (server preferred order)
SSL 2 handshake compatibility No
0-RTT enabled No


HTTP Requests
1 https://mail.whosts.pl/  (HTTP/1.1 302 Found)
1
Date Thu, 11 Dec 2025 19:23:46 GMT
Server Apache
Location https://autoconfig.whosts.pl/
Content-Length 213
Connection close
Content-Type text/html; charset=iso-8859-1


Miscellaneous
Test date Thu, 11 Dec 2025 19:23:37 UTC
Test duration 21.172 seconds
HTTP status code 302
HTTP forwarding https://autoconfig.whosts.pl
HTTP server signature Apache
Server hostname mail.whosts.pl


SSL Report v2.4.1