12cu.com
Issued by R3
About this certificate
This digital certificate with serial number 04:a2:32:d9:95:5e:f9:30:e3:0b:4c:ea:c8:4a:e3:0b:a2:85 was issued on by Let's Encrypt.
With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.
We have idenified some issues with this certificate:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=12cu.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:a2:32:d9:95:5e:f9:30:e3:0b:4c:ea:c8:4a:e3:0b:a2:85Serial Number (int): 403642478326044164607313111469776649822853
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 78:ce:7b:8d:13:dd:49:6d:0a:31:1b:47:c5:5c:54:61:2b:a9:fa:08
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): dd:2e:df:b9:15:83:e8:07:b7:cc:cb:b5:e9:7b:d8:ec:87:9a:dd:fd
Fingerprint (sha256): d7:1a:13:00:83:5a:60:0c:6c:3e:09:75:f4:ff:98:ad:7e:3b:5b:b8:a9:2e:3a:75:77:38:31:a7:94:cc:95:98
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate 12cu.com
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for 12cu.com
Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
9 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
12cu.com
www.12cu.com
www.12cu.com
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(limited to 100 certificates)
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support-canon-test.gekko.fr
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analytics.fontys.12cu.com
office-analyzer.fontys.12cu.com
12cu.com
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support-canon-test.gekko.fr
12cu.com
12cu.com
12cu.com
support-canon-test.gekko.fr
portal.12cu.com
kpn.dev.12cu.com
12cu.com
support.dwsford.it
support.senapsis.com
support-canon-test.gekko.fr
12cu.com
support.tecamb.it
support.tecamb.it
12cu.com
kpn.dev.12cu.com
12cu.com
kibana.data.12cu.com
12cu.com
12cu.com
analytics.fontys.12cu.com
12cu.com
12cu.com
support-canon-test.gekko.fr
12cu.com
Certificate
The complete raw certificate details for 12cu.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFJTCCBA2gAwIBAgISBKIy2ZVe+TDjC0zqyErjC6KFMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzA1MjEwOTQ1MTlaFw0yMzA4MTkwOTQ1MThaMBMxETAPBgNVBAMT CDEyY3UuY29tMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu2C2EMCN N1peWXi00PX1zQPQiSdIiKne8cXi3Io6a4NKJSEVDFN1Z1zrzZw3CtO/AOaI6eOb +VlPbYdg8fmNDh3PdEU71NcBEO2BC2xqPh13ke9/ThbJuy6YwkMG4WAffiF0aYOz lUHjNpz8BcaQRqp+HSIX8hPOVUFsP7rJCPov+vazdGStY1/oslZd7GTOCzg3WYjL gUHMvyvKT0G8Cc3+Lfn1dbTaivnRiGyAwFK2SKvteElX9xltZSvz7280LsuXZLDg ElFj2XpsoGbMX8yuyg8pKD8MqgaCatsbR17cuoQaCb0i/hTj6Sl+NvDXcHLeqOOa 9ezDp3naNBirSwIDAQABo4ICUjCCAk4wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQW MBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBR4 znuNE91JbQoxG0fFXFRhK6n6CDAfBgNVHSMEGDAWgBQULrMXt1hWy65QCUDmH6+d ixTCxjBVBggrBgEFBQcBAQRJMEcwIQYIKwYBBQUHMAGGFWh0dHA6Ly9yMy5vLmxl bmNyLm9yZzAiBggrBgEFBQcwAoYWaHR0cDovL3IzLmkubGVuY3Iub3JnLzAhBgNV HREEGjAYgggxMmN1LmNvbYIMd3d3LjEyY3UuY29tMEwGA1UdIARFMEMwCAYGZ4EM AQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0 c2VuY3J5cHQub3JnMIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDxAHYAtz77JN+cTbp1 8jnFulj0bF38Qs96nzXEnh0JgSXttJkAAAGIPeno5gAABAMARzBFAiAPR53JZ/No NfFpQxI/7784HILvlaDeKY6MWSSHdsK8ZwIhALmLg4jB64x/BSGU49/MXkmhg+4Q 59l9IAe4vo3hiYNTAHcAejKMVNi3LbYg6jjgUh7phBZwMhOFTTvSK8E6V6NS61IA AAGIPeno8gAABAMASDBGAiEAoSukKhmOJcOOjYqon24AbRKXpmfSjfuYjy7Cfbyd VEkCIQCNpQLYW3cVItxyRpUp1lgfIlVTKqkcPUwIsCNYTB5iqjANBgkqhkiG9w0B AQsFAAOCAQEAPRm+RvnH7Pp1W6E6V4VBVqxYn4zFVNNT3qylBeD12gwIHLkPO393 cGNu9UXWgxEXCqfRt/r/O9ZFW4r3KwIyfppoBAfBr+VFI4B7tbSuxMMzKGcXduOZ 67W5WRLYlEkGchbMirMjcL9jXI/nZPxdkRYla2rQhbkWJjJgs0yPVO4ynuAM5tP3 Y3njm43zQkTndyMX2x11LGVxRzvHNvbUT+WMmqxXQQX2YpDo3U0DU3TtMwdbB1NG 3ttMxtBfnJK4CN/7icjPyVqrItThYD8jobHZsAo7VykC+8lFdFK/QuNfToZH1dXt xS6Bsxn6/MofDjux1pCzBWlz0+9XxdsFRQ== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu2C2EMCNN1peWXi00PX1 zQPQiSdIiKne8cXi3Io6a4NKJSEVDFN1Z1zrzZw3CtO/AOaI6eOb+VlPbYdg8fmN Dh3PdEU71NcBEO2BC2xqPh13ke9/ThbJuy6YwkMG4WAffiF0aYOzlUHjNpz8BcaQ Rqp+HSIX8hPOVUFsP7rJCPov+vazdGStY1/oslZd7GTOCzg3WYjLgUHMvyvKT0G8 Cc3+Lfn1dbTaivnRiGyAwFK2SKvteElX9xltZSvz7280LsuXZLDgElFj2XpsoGbM X8yuyg8pKD8MqgaCatsbR17cuoQaCb0i/hTj6Sl+NvDXcHLeqOOa9ezDp3naNBir SwIDAQAB -----END PUBLIC KEY-----
ASN.1 decoded
[c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2 . . . . . . . . [c:0|t:2|false] INTEGER 403642478326044164607313111469776649822853 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-05-21 09:45:19 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-08-19 09:45:18 +0000 UTC . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString '12cu.com' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption) . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 23654253095412378405260149400942589121899622512244773391200829719694766460459792067642408927406583182702681597847767328075236395896872887724935672088918859550894183381072687121066359263704379179941893213514335188156245752011038006596875610979889486003499054181129322175996182071778115212983193537712599380123108343002609754199643038444331896001536366670474111037909012424424602436340317274582482868662450734307612515860611216803303400503107962656080220271251538056151702986872514894554072489679887311055398174036014919195225243720445595628401263424374861037795441205147747227072154854279234685585859705014630408039243 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537 . . . . . . . . [c:2|t:3|true] ORAddress . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits) 05a0 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes) 78ce7b8d13dd496d0a311b47c55c54612ba9fa08 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 142eb317b75856cbae500940e61faf9d8b14c2c6 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (73 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r3.o.lencr.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r3.i.lencr.org/' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (26 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '12cu.com' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.12cu.com' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (69 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f1007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb499000001883de9e8e6000004030047304502200f479dc967f36835f16943123fefbf381c82ef95a0de298e8c59248776c2bc67022100b98b8388c1eb8c7f052194e3dfcc5e49a183ee10e7d97d2007b8be8de18983530077007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb52000001883de9e8f20000040300483046022100a12ba42a198e25c38e8d8aa89f6e006d1297a667d28dfb988f2ec27dbc9d54490221008da502d85b771522dc72469529d6581f2255532aa91c3d4c08b023584c1e62aa . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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