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SSL Checker SSL & CSR Decoder CSR Generator SSL Converter

SSL Checker

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

Report

Hostname: Matches Common Name or/and SAN
Expired: No (60 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.de.
Nameserver: ns-gmx.ui-dns.com.
Nameserver: ns-gmx.ui-dns.biz.
Nameserver: ns-gmx.ui-dns.org.

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: 3aa2def83671f44d501fc011ae865786
Not Before: Jun 20, 2023 09:48:04 GMT
Not After: Jun 24, 2024 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 Telekom Security ServerID OV Class 2 CA
Issuer Organization Deutsche Telekom Security GmbH
Not Before: Jun 20, 2023 09:48:04 GMT
Not After: Jun 24, 2024 23:59:59 GMT
Signature Algorithm: sha256WithRSAEncryption
Serial Number: 3aa2def83671f44d501fc011ae865786
SHA1 Fingerprint: AA:10:02:8A:B6:47:11:E3:4F:36:D3:CF:F8:1E:38:8D:8A:F9:7E:5F
MD5 Fingerprint: 00:28:3E:CD:1E:0A:6E:F7:7E:59:28:F8:C9:15:4C:1B

Certificate # 2 - Common Name: Telekom Security ServerID OV Class 2 CA

Decode this certificate for verbose information →
In place? Yes, this certificate directly certifies the preceding one
Subject Common Name Telekom Security ServerID OV Class 2 CA
Subject Organization Deutsche Telekom Security GmbH
Issuer Common Name T-TeleSec GlobalRoot Class 2
Issuer Organization T-Systems Enterprise Services GmbH
Not Before: Aug 02, 2022 09:16:44 GMT
Not After: Aug 02, 2027 23:59:59 GMT
Signature Algorithm: sha256WithRSAEncryption
Serial Number: e5d298915c40431a4e1c4ca488b8ea3
SHA1 Fingerprint: 52:86:9C:EF:1A:21:95:C4:16:82:0C:18:3B:80:C9:95:BB:BF:BE:DC
MD5 Fingerprint: BE:FA:B4:7B:50:71:BD:46:03:89:FA:F2:DB:A3:B6:07

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 = Deutsche Telekom Security GmbH, CN = Telekom Security ServerID OV 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 = Deutsche Telekom Security GmbH, CN = Telekom Security ServerID OV Class 2 CA
-----BEGIN CERTIFICATE-----
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vzUlMVJTntElQl+qqaSdLC2iSnffr2oZbZMiwNV5o1OPrfPGbSqgBOwAXw/eUtiM
wk0cBqMX2CpMCICu+EW3mwRWXrR98YNgw1xyLa4tPkXukVp71UsDO3eL5oruex+h
lOeZ/1LVc5aDIhA/Ys8dSgyH6dhXYaEnuRhHSEpMquf2lDl8myCN
-----END CERTIFICATE-----
 1 s:C = DE, O = Deutsche Telekom Security GmbH, CN = Telekom Security ServerID OV 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-----
MIIFdTCCBF2gAwIBAgIQDl0piRXEBDGk4cTKSIuOozANBgkqhkiG9w0BAQsFADCB
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UQI/g3ovkWbg
-----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 = Deutsche Telekom Security GmbH, CN = Telekom Security ServerID OV Class 2 CA

---
No client certificate CA names sent
Peer signing digest: SHA256
Peer signature type: RSA-PSS
Server Temp Key: X25519, 253 bits
---
SSL handshake has read 3953 bytes and written 382 bytes
Verification: OK
---
New, TLSv1.3, Cipher is TLS_AES_128_GCM_SHA256
Server public key is 2048 bit
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
Early data was not sent
Verify return code: 0 (ok)
---
DONE