Namecheap.com

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 (325 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: 23.42.92.20
Reverse IP lookup: a23-42-92-20.deploy.static.akamaitechnologies.com.
Nameserver: a24-66.akam.net.
Nameserver: a28-67.akam.net.
Nameserver: a5-64.akam.net.
Nameserver: a2-65.akam.net.
Nameserver: a1-192.akam.net.
Nameserver: a7-65.akam.net.

General Information

Common Name: www.groupon.co.uk
SANs: DNS:www.groupon.co.ukDNS:eu.groupondata.comDNS:fr.job.groupon.beDNS:groupon.aeDNS:groupon.beDNS:groupon.caDNS:groupon.co.nzDNS:groupon.co.ukDNS:groupon.com.auDNS:groupon.deDNS:groupon.esDNS:groupon.frDNS:groupon.ieDNS:groupon.itDNS:groupon.jpDNS:groupon.luDNS:groupon.nlDNS:groupon.plDNS:grouponnz.co.nzDNS:nl.job.groupon.be Total number of SANs: 20
Organization: Groupon, Inc.
Locality: Chicago
Signature Algorithm: sha256WithRSAEncryption
Key Type: RSA
Key size: 2048 bits
Serial Number: f5cc0cbe53c5130f9a6933b6409da56
Not Before: Jan 18, 2024 00:00:00 GMT
Not After: Feb 17, 2025 23:59:59 GMT
Number of certs: 2
Revocation Status: good
OCSP Stapling: Supported
Server: AkamaiGHost
HSTS: Not Supported
HPKP: Not Supported

Chain Information

Certificate # 1 - Common Name: www.groupon.co.uk

Decode this certificate for verbose information →
Subject Common Name www.groupon.co.uk
Subject Organization Groupon, Inc.
Issuer Common Name DigiCert Global G2 TLS RSA SHA256 2020 CA1
Issuer Organization DigiCert Inc
Not Before: Jan 18, 2024 00:00:00 GMT
Not After: Feb 17, 2025 23:59:59 GMT
Signature Algorithm: sha256WithRSAEncryption
Serial Number: f5cc0cbe53c5130f9a6933b6409da56
SHA1 Fingerprint: C2:5A:40:D0:E2:98:84:2E:0C:09:D7:35:0F:E1:E6:D3:1D:0B:B8:11
MD5 Fingerprint: 72:71:BB:19:65:40:49:40:93:87:B3:AB:71:4A:8E:C8

Certificate # 2 - Common Name: DigiCert Global G2 TLS RSA SHA256 2020 CA1

Decode this certificate for verbose information →
In place? Yes, this certificate directly certifies the preceding one
Subject Common Name DigiCert Global G2 TLS RSA SHA256 2020 CA1
Subject Organization DigiCert Inc
Issuer Common Name DigiCert Global Root G2
Issuer Organization DigiCert Inc
Not Before: Mar 30, 2021 00:00:00 GMT
Not After: Mar 29, 2031 23:59:59 GMT
Signature Algorithm: sha256WithRSAEncryption
Serial Number: cf5bd062b5602f47ab8502c23ccf066
SHA1 Fingerprint: 1B:51:1A:BE:AD:59:C6:CE:20:70:77:C0:BF:0E:00:43:B1:38:26:12
MD5 Fingerprint: 21:14:C6:BF:5B:E1:5E:FD:DD:3C:F6:A5:F9:43:EE:8A

OpenSSL Handshake

depth=2 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root G2
verify return:1
depth=1 C = US, O = DigiCert Inc, CN = DigiCert Global G2 TLS RSA SHA256 2020 CA1
verify return:1
depth=0 C = US, ST = ILLINOIS, L = Chicago, O = "Groupon, Inc.", CN = www.groupon.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: 748580C066C7DF37DECFBD2937AA031DBEEDCD17
    Produced At: Mar 28 04:55:03 2024 GMT
    Responses:
    Certificate ID:
      Hash Algorithm: sha1
      Issuer Name Hash: A7C4B8B3DC5BB5581EA7D7F13AC569F56F48D789
      Issuer Key Hash: 748580C066C7DF37DECFBD2937AA031DBEEDCD17
      Serial Number: 0F5CC0CBE53C5130F9A6933B6409DA56
    Cert Status: good
    This Update: Mar 28 04:39:02 2024 GMT
    Next Update: Apr  4 03:39:02 2024 GMT

    Signature Algorithm: sha256WithRSAEncryption
         08:1c:db:b7:4a:12:99:8d:fc:3c:a2:c6:d4:89:a4:7d:a0:d5:
         92:70:22:8c:d3:88:26:0b:ea:05:2a:1b:0a:53:bb:91:ba:f0:
         a0:d5:d5:5b:4d:94:b7:73:ac:fb:3c:cb:b3:6a:d3:f8:fb:5e:
         80:1c:8b:f0:b1:2a:de:b4:9c:e8:e9:22:d6:a6:42:84:35:15:
         35:35:af:94:a0:64:12:73:62:67:76:12:b2:76:9b:3f:54:98:
         d7:b8:2c:20:30:7d:6a:23:6e:02:e2:10:fb:27:28:ce:9b:fb:
         06:3a:d5:49:56:76:8e:07:45:22:3e:38:dd:bd:2f:96:11:35:
         34:5f:2e:df:ab:6c:26:2b:cb:59:63:f0:0e:26:7d:db:47:0b:
         bc:bb:11:bf:de:64:18:93:c1:c6:8c:72:e1:dd:1c:fc:87:72:
         9a:89:65:61:93:6e:85:cf:eb:72:1a:47:43:ea:a3:1e:2a:21:
         53:52:a1:2a:be:86:96:63:df:a2:83:da:c0:e1:24:6d:25:56:
         d2:c7:0b:95:0a:f5:e1:7a:46:24:67:7a:66:30:7a:84:4e:77:
         0a:2d:ab:a2:15:95:65:31:be:a0:e4:89:f4:9b:9a:40:13:cc:
         40:78:6f:94:c2:92:8a:4a:82:da:2c:93:95:94:f9:24:74:22:
         92:15:21:ff
======================================
---
Certificate chain
 0 s:C = US, ST = ILLINOIS, L = Chicago, O = "Groupon, Inc.", CN = www.groupon.co.uk
   i:C = US, O = DigiCert Inc, CN = DigiCert Global G2 TLS RSA SHA256 2020 CA1
-----BEGIN CERTIFICATE-----
MIIH6DCCBtCgAwIBAgIQD1zAy+U8UTD5ppM7ZAnaVjANBgkqhkiG9w0BAQsFADBZ
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMTMwMQYDVQQDEypE
aWdpQ2VydCBHbG9iYWwgRzIgVExTIFJTQSBTSEEyNTYgMjAyMCBDQTEwHhcNMjQw
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aiv0U/B7ckjo3m9ZVYBdXfvJnhpv8wB3AH1ZHhLheCp7HGFnfF79+NCHXBSgTpWe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SodbxzfgT+Bxz3JgpS29RIuepRyLtIlCG2W32jBIrWRXNLCOsb5boCFyHcRS1Pc3
4TCA0bB0zNRw37za
-----END CERTIFICATE-----
 1 s:C = US, O = DigiCert Inc, CN = DigiCert Global G2 TLS RSA SHA256 2020 CA1
   i:C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root G2
-----BEGIN CERTIFICATE-----
MIIEyDCCA7CgAwIBAgIQDPW9BitWAvR6uFAsI8zwZjANBgkqhkiG9w0BAQsFADBh
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
d3cuZGlnaWNlcnQuY29tMSAwHgYDVQQDExdEaWdpQ2VydCBHbG9iYWwgUm9vdCBH
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wcW1BSAuWdH/SvWgKtiwla3JLko716f2b4gp/DA/JIS7w7d7kwcsr4drdjPtAFVS
slme5LnQ89/nD/7d+MS5EHKBCQRfz5eeLjJ1js+aWNJXMX43AYGyZm0pGrFmCW3R
bpD0ufovARTFXFZkAdl9h6g4U5+LXUZtXMYnhIHUfoyMo5tS58aI7Dd8KvvwVVo4
chDYABPPTHPbqjc1qCmBaZx2vN4Ye5DUys/vZwP9BFohFrH/6j/f3IL16/RZkiMN
JCqVJUzKoZHm1Lesh3Sz8W2jmdv51b2EQJ8HmA==
-----END CERTIFICATE-----
---
Server certificate
subject=C = US, ST = ILLINOIS, L = Chicago, O = "Groupon, Inc.", CN = www.groupon.co.uk

issuer=C = US, O = DigiCert Inc, CN = DigiCert Global G2 TLS RSA SHA256 2020 CA1

---
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 4294 bytes and written 385 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