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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 (55 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: 84.45.203.209
Reverse IP lookup: 84-45-203-209.static.enta.net.
Nameserver: ns4.freeola.net.
Nameserver: ns3.freeola.net.

General Information

Common Name: mail.nova-security.co.uk
SANs: DNS:mail.nova-security.co.uk Total number of SANs: 1
Signature Algorithm: sha256WithRSAEncryption
Key Type: RSA
Key size: 2048 bits
Serial Number: 44f0c75981040da844c711d54c00f7ef165
Not Before: May 20, 2024 22:00:49 GMT
Not After: Aug 18, 2024 22:00:48 GMT
Number of certs: 2
Revocation Status: good
OCSP Stapling: Supported

Chain Information

Certificate # 1 - Common Name: mail.nova-security.co.uk

Decode this certificate for verbose information →
Subject Common Name mail.nova-security.co.uk
Issuer Common Name R3
Issuer Organization Let's Encrypt
Not Before: May 20, 2024 22:00:49 GMT
Not After: Aug 18, 2024 22:00:48 GMT
Signature Algorithm: sha256WithRSAEncryption
Serial Number: 44f0c75981040da844c711d54c00f7ef165
SHA1 Fingerprint: 6B:C4:6E:51:EC:3A:C8:09:EC:AC:DA:E4:47:D3:B1:1D:E5:BA:7E:EB
MD5 Fingerprint: 68:36:A8:8C:AA:55:91:14:CA:68:E1:78:26:B0:80:5F

Certificate # 2 - Common Name: R3

Decode this certificate for verbose information →
In place? Yes, this certificate directly certifies the preceding one
Subject Common Name R3
Subject Organization Let's Encrypt
Issuer Common Name ISRG Root X1
Issuer Organization Internet Security Research Group
Not Before: Sep 04, 2020 00:00:00 GMT
Not After: Sep 15, 2025 16:00:00 GMT
Signature Algorithm: sha256WithRSAEncryption
Serial Number: 912b084acf0c18a753f6d62e25a75f5a
SHA1 Fingerprint: A0:53:37:5B:FE:84:E8:B7:48:78:2C:7C:EE:15:82:7A:6A:F5:A4:05
MD5 Fingerprint: E8:29:E6:5D:7C:43:07:D6:FB:C1:3C:17:9E:03:7A:36

OpenSSL Handshake

depth=2 C = US, O = Internet Security Research Group, CN = ISRG Root X1
verify return:1
depth=1 C = US, O = Let's Encrypt, CN = R3
verify return:1
depth=0 CN = mail.nova-security.co.uk
verify return:1
CONNECTED(00000003)
OCSP response: 
======================================
OCSP Response Data:
    OCSP Response Status: successful (0x0)
    Response Type: Basic OCSP Response
    Version: 1 (0x0)
    Responder Id: C = US, O = Let's Encrypt, CN = R3
    Produced At: Jun 24 18:52:00 2024 GMT
    Responses:
    Certificate ID:
      Hash Algorithm: sha1
      Issuer Name Hash: 48DAC9A0FB2BD32D4FF0DE68D2F567B735F9B3C4
      Issuer Key Hash: 142EB317B75856CBAE500940E61FAF9D8B14C2C6
      Serial Number: 044F0C75981040DA844C711D54C00F7EF165
    Cert Status: good
    This Update: Jun 24 18:52:00 2024 GMT
    Next Update: Jul  1 18:51:58 2024 GMT

    Signature Algorithm: sha256WithRSAEncryption
         47:a1:82:11:11:6c:48:ba:b3:eb:fe:7b:24:69:82:95:44:00:
         82:fa:96:d7:13:c1:76:de:63:6d:d0:74:02:e1:9d:af:49:a8:
         f3:26:34:31:64:78:b1:fa:d5:9d:32:5c:2d:22:95:1c:3a:68:
         70:04:f2:42:34:1e:25:09:03:5e:fa:3f:a5:ac:53:5f:0b:a5:
         10:8f:23:e7:a4:1a:7b:85:f2:1d:d7:99:be:3a:c7:94:72:56:
         8d:f7:6c:94:53:ca:c8:4c:d4:e0:74:e9:47:3a:e1:0b:95:d5:
         82:35:be:33:7a:1c:f5:95:c3:8c:77:27:ff:b6:16:2b:23:8f:
         c4:1f:37:a3:fc:4c:55:77:66:ba:20:ae:ba:9e:14:38:76:ff:
         fe:06:71:7d:c0:39:56:7a:f2:9b:ae:39:67:ce:44:ca:f1:b1:
         a7:d1:d6:58:61:41:5e:03:a3:ba:17:bf:b0:76:fb:57:c4:a2:
         50:b4:18:92:20:ed:ef:46:32:fe:b4:1f:f9:b5:cd:01:d3:98:
         d3:3d:a0:b3:22:a6:6a:4c:e6:c4:40:67:70:4e:e8:75:f1:2b:
         60:02:60:fa:45:60:50:48:ff:cf:bc:94:aa:a2:a5:90:5b:e7:
         f6:22:86:40:fa:04:e9:a4:52:94:3a:af:f5:39:7e:fe:59:4d:
         08:87:16:e0
======================================
---
Certificate chain
 0 s:CN = mail.nova-security.co.uk
   i:C = US, O = Let's Encrypt, CN = R3
-----BEGIN CERTIFICATE-----
MIIE+zCCA+OgAwIBAgISBE8MdZgQQNqETHEdVMAPfvFlMA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yNDA1MjAyMjAwNDlaFw0yNDA4MTgyMjAwNDhaMCMxITAfBgNVBAMT
GG1haWwubm92YS1zZWN1cml0eS5jby51azCCASIwDQYJKoZIhvcNAQEBBQADggEP
ADCCAQoCggEBANLjNR7H1d4g+LMqGXvSDhO8NaHmofyJMmJB2f8F2sjic/54TmSu
yb6EcY14FcXAsTmM0/VHueTd5n0L7UkbH2xcLI/c/N1QjwPG4xFzgPa1FNEzV33E
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Jhl/8JPWWHW+3HMJsD1c0AEBlo0A6bcemBxrlwmYF4YW+2u5/hEsPtcl4M6xXmz6
rNfC7meGGyJPrnRju/8MVfktRZXWlqVtNcOP/8kqiEh70dKg4Okc9U1Tla2uvkXY
BZ4CW/F0+Yz9p7honpg+mMiAmkrQEZyzjTsCAwEAAaOCAhgwggIUMA4GA1UdDwEB
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LmxlbmNyLm9yZy8wIwYDVR0RBBwwGoIYbWFpbC5ub3ZhLXNlY3VyaXR5LmNvLnVr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-----END CERTIFICATE-----
 1 s:C = US, O = Let's Encrypt, CN = R3
   i:C = US, O = Internet Security Research Group, CN = ISRG Root X1
-----BEGIN CERTIFICATE-----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AoYWaHR0cDovL3gxLmkubGVuY3Iub3JnLzAnBgNVHR8EIDAeMBygGqAYhhZodHRw
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ikfmZW4/RvTZ8M6UK+5UzhK8jCdLuMGYL6KvzXGRSgi3yLgjewQtCPkIVz6D2QQz
CkcheAmCJ8MqyJu5zlzyZMjAvnnAT45tRAxekrsu94sQ4egdRCnbWSDtY7kh+BIm
lJNXoB1lBMEKIq4QDUOXoRgffuDghje1WrG9ML+Hbisq/yFOGwXD9RiX8F6sw6W4
avAuvDszue5L3sz85K+EC4Y/wFVDNvZo4TYXao6Z0f+lQKc0t8DQYzk1OXVu8rp2
yJMC6alLbBfODALZvYH7n7do1AZls4I9d1P4jnkDrQoxB3UqQ9hVl3LEKQ73xF1O
yK5GhDDX8oVfGKF5u+decIsH4YaTw7mP3GFxJSqv3+0lUFJoi5Lc5da149p90Ids
hCExroL1+7mryIkXPeFM5TgO9r0rvZaBFOvV2z0gp35Z0+L4WPlbuEjN/lxPFin+
HlUjr8gRsI3qfJOQFy/9rKIJR0Y/8Omwt/8oTWgy1mdeHmmjk7j1nYsvC9JSQ6Zv
MldlTTKB3zhThV1+XWYp6rjd5JW1zbVWEkLNxE7GJThEUG3szgBVGP7pSWTUTsqX
nLRbwHOoq7hHwg==
-----END CERTIFICATE-----
---
Server certificate
subject=CN = mail.nova-security.co.uk

issuer=C = US, O = Let's Encrypt, CN = R3

---
No client certificate CA names sent
Peer signing digest: SHA256
Peer signature type: RSA
Server Temp Key: X25519, 253 bits
---
SSL handshake has read 3558 bytes and written 428 bytes
Verification: OK
---
New, TLSv1.2, Cipher is ECDHE-RSA-AES256-GCM-SHA384
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-AES256-GCM-SHA384
    Session-ID: 330B000039795D01ECEE706489E6C58E971EFAE5D5402A060DDECA20FDD9B241
    Session-ID-ctx: 
    Master-Key: 2E9CAEF141E270BC09B3ACDAA82FDDADA50C6E0D91A098A83D5A511C8696F5B1E027E7D72DDCB2DDAF52F04771446171
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    Start Time: 1719256603
    Timeout   : 7200 (sec)
    Verify return code: 0 (ok)
    Extended master secret: yes
---
220 mail.nova-security.co.uk ESMTP Mon, 24 Jun 2024 20:16:44 +0100
DONE