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SSL Checker

Submit the Hostname and Port in the fields below. This checker supports SNI and STARTTLS.

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Hostname: Matches Common Name or/and SAN
Expired: No (252 days till expiration)
Public Key: We were unable to find any issues in the public key of end-entity certificate
Trusted: Yes, we were able to verify the certificate
Self-Signed: No, the end-entity certificate is not self-signed
Chain Issues: No, we were unable to detect any issues in the certificate chain sent by the server
Weak signatures: No, certificates sent by the server were not signed utilizing a weak hash function
OCSP Status: OCSP Responder returned "good" status for the end-entity certificate

DNS Information

Resolves To: 82.165.229.87
Reverse IP lookup: redir-bs.web.de.
Nameserver: ns-gmx.ui-dns.com.
Nameserver: ns-gmx.ui-dns.biz.
Nameserver: ns-gmx.ui-dns.org.
Nameserver: ns-gmx.ui-dns.de.

General Information

Common Name: *.gmx.net
SANs: DNS:*.gmx.netDNS:gmx.net Total number of SANs: 2
Organization: 1&1 Mail & Media GmbH
Locality: Montabaur
Signature Algorithm: sha256WithRSAEncryption
Key Type: RSA
Key size: 2048 bits
Serial Number: 34ce25f4c1a6e1a2b316a43f797ea891
Not Before: Aug 04, 2020 10:09:19 GMT
Not After: Aug 09, 2022 23:59:59 GMT
Number of certs: 2
Revocation Status: good
OCSP Stapling: Not Supported
Server: Apache
HSTS: max-age=31536000; includeSubdomains; preload
HPKP: Not Supported

Chain Information

Certificate # 1 - Common Name: *.gmx.net

Decode this certificate for verbose information →
Subject Common Name *.gmx.net
Subject Organization 1&1 Mail & Media GmbH
Issuer Common Name TeleSec ServerPass Class 2 CA
Issuer Organization T-Systems International GmbH
Not Before: Aug 04, 2020 10:09:19 GMT
Not After: Aug 09, 2022 23:59:59 GMT
Signature Algorithm: sha256WithRSAEncryption
Serial Number: 34ce25f4c1a6e1a2b316a43f797ea891
SHA1 Fingerprint: 46:03:C9:1A:E8:AC:9D:BB:BE:32:81:34:EE:D1:B9:9F:E0:01:8B:7C
MD5 Fingerprint: 03:7C:E5:3F:C6:6D:A6:34:CD:0B:D3:BE:84:80:1B:6F

Certificate # 2 - Common Name: TeleSec ServerPass Class 2 CA

Decode this certificate for verbose information →
In place? Yes, this certificate directly certifies the preceding one
Subject Common Name TeleSec ServerPass Class 2 CA
Subject Organization T-Systems International GmbH
Issuer Common Name T-TeleSec GlobalRoot Class 2
Issuer Organization T-Systems Enterprise Services GmbH
Not Before: Feb 11, 2014 14:39:10 GMT
Not After: Feb 11, 2024 23:59:59 GMT
Signature Algorithm: sha256WithRSAEncryption
Serial Number: 7e39c7ad1dd9f043
SHA1 Fingerprint: 7B:C0:04:8A:1F:D8:F4:23:8C:CC:C9:CC:56:6D:D3:8B:FF:7E:67:E2
MD5 Fingerprint: 74:78:51:90:16:76:6E:B0:3D:53:A5:E3:CA:5A:1A:91

OpenSSL Handshake

depth=2 C = DE, O = T-Systems Enterprise Services GmbH, OU = T-Systems Trust Center, CN = T-TeleSec GlobalRoot Class 2
verify return:1
depth=1 C = DE, O = T-Systems International GmbH, OU = T-Systems Trust Center, ST = Nordrhein Westfalen, postalCode = 57250, L = Netphen, street = Untere Industriestr. 20, CN = TeleSec ServerPass Class 2 CA
verify return:1
depth=0 C = DE, O = 1&1 Mail & Media GmbH, ST = Rheinland-Pfalz, L = Montabaur, CN = *.gmx.net
verify return:1
CONNECTED(00000003)
OCSP response: no response sent
---
Certificate chain
 0 s:/C=DE/O=1&1 Mail & Media GmbH/ST=Rheinland-Pfalz/L=Montabaur/CN=*.gmx.net
   i:/C=DE/O=T-Systems International GmbH/OU=T-Systems Trust Center/ST=Nordrhein Westfalen/postalCode=57250/L=Netphen/street=Untere Industriestr. 20/CN=TeleSec ServerPass Class 2 CA
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----
 1 s:/C=DE/O=T-Systems International GmbH/OU=T-Systems Trust Center/ST=Nordrhein Westfalen/postalCode=57250/L=Netphen/street=Untere Industriestr. 20/CN=TeleSec ServerPass Class 2 CA
   i:/C=DE/O=T-Systems Enterprise Services GmbH/OU=T-Systems Trust Center/CN=T-TeleSec GlobalRoot Class 2
-----BEGIN CERTIFICATE-----
MIIFwDCCBKigAwIBAgIIfjnHrR3Z8EMwDQYJKoZIhvcNAQELBQAwgYIxCzAJBgNV
BAYTAkRFMSswKQYDVQQKDCJULVN5c3RlbXMgRW50ZXJwcmlzZSBTZXJ2aWNlcyBH
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X50cZzmWw17S0rWECOvPEt/4tXJ4Me9aAxx6WRm708n/K8O4mB3AzvA/M7VUDaP9
8LtreoTnWInjyg/8+Ahtce3foMXiIP4+9IX7fbm6yqh4u33tqMESDcRP6eGdzq4D
qnHyIvj9XNpuGgMvDgq357kZQS9e5XVH5icSvW1kr2kX2t1f
-----END CERTIFICATE-----
---
Server certificate
subject=/C=DE/O=1&1 Mail & Media GmbH/ST=Rheinland-Pfalz/L=Montabaur/CN=*.gmx.net
issuer=/C=DE/O=T-Systems International GmbH/OU=T-Systems Trust Center/ST=Nordrhein Westfalen/postalCode=57250/L=Netphen/street=Untere Industriestr. 20/CN=TeleSec ServerPass Class 2 CA
---
No client certificate CA names sent
Peer signing digest: SHA256
Server Temp Key: ECDH, P-256, 256 bits
---
SSL handshake has read 4216 bytes and written 327 bytes
Verification: OK
---
New, TLSv1.2, Cipher is ECDHE-RSA-AES128-GCM-SHA256
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
    Protocol  : TLSv1.2
    Cipher    : ECDHE-RSA-AES128-GCM-SHA256
    Session-ID: 6AC02C9B3F8521FE5289A232A7CDC886CE63F119428F9BA29ACA01D2765D1897
    Session-ID-ctx: 
    Master-Key: ACF1DC4F6F72CEF87D9AF3BDD1988BE1E1BAA6407442C9BA044A66A20BDF04031722156A99FAADC058960754A9638F0A
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    Start Time: 1638253992
    Timeout   : 7200 (sec)
    Verify return code: 0 (ok)
    Extended master secret: yes
---
DONE