12cu.com
Issued by R3
About this certificate
This digital certificate with serial number 03:50:3a:06:c4:0f:6e:91:b5:46:4f:d3:33:19:19:9a:b0:13 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): 03:50:3a:06:c4:0f:6e:91:b5:46:4f:d3:33:19:19:9a:b0:13Serial Number (int): 288636577503067417601346776812865579560979
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: db:f2:11:03:c0:b4:a3:cf:c0:c6:19:4a:d6:a6:98:d7:be:67:54:c0
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): 8e:76:56:ed:4b:cb:c9:28:ff:03:82:2f:a4:ec:51:43:a6:1a:96:13
Fingerprint (sha256): a6:e6:38:c0:73:70:56:d4:9e:34:d9:ec:e2:aa:e5:e1:56:8d:37:37:54:8d:58:13:59:6a:09:4a:a5:40:eb:f5
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
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support-canon-test.gekko.fr
12cu.com
12cu.com
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support-canon-test.gekko.fr
portal.12cu.com
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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----- MIIFJTCCBA2gAwIBAgISA1A6BsQPbpG1Rk/TMxkZmrATMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzAzMjIwOTQ1MThaFw0yMzA2MjAwOTQ1MTdaMBMxETAPBgNVBAMT CDEyY3UuY29tMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1McF3Kze ZtzqWnp7htizaIOT6WZ4EUVadWbv0/lCd8qlitVj4UGSwYlSF5bvdsAX6SkfapzU 3MrsCKQpJvF1KDty+fKXElDQogS0EhbwJSY/dD2Eh9+VAjUSbcbsmQUx2mlMg8il p+cMzZnuuPx9/E1/eBT59Zshcz98oYq295czSn5LMBgjTve0ZDLS6Qr8lC77/MOI 8aQVNaqCbLNtzpGzKYfAzD5X8IIJKiR5TE8jE09fm8D6UfD6mMaVClGu+kD2QoTL eSr8MD+VKCjaB5sMLLVUFmoj7q4te1iXbqwvFM2ibDQGXo8MTU71bEhYEnZ0URKi HkRQJEI5FRdELQIDAQABo4ICUjCCAk4wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQW MBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBTb 8hEDwLSjz8DGGUrWppjXvmdUwDAfBgNVHSMEGDAWgBQULrMXt1hWy65QCUDmH6+d ixTCxjBVBggrBgEFBQcBAQRJMEcwIQYIKwYBBQUHMAGGFWh0dHA6Ly9yMy5vLmxl bmNyLm9yZzAiBggrBgEFBQcwAoYWaHR0cDovL3IzLmkubGVuY3Iub3JnLzAhBgNV HREEGjAYgggxMmN1LmNvbYIMd3d3LjEyY3UuY29tMEwGA1UdIARFMEMwCAYGZ4EM AQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0 c2VuY3J5cHQub3JnMIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDxAHcAejKMVNi3LbYg 6jjgUh7phBZwMhOFTTvSK8E6V6NS61IAAAGHCOxUXgAABAMASDBGAiEAo4WEux/a 1kKnV5IwYWZ0Er19uF8TT0E3mBrCArRa338CIQDLTZNSma4xcQ9I02bkCv8oKRmy P6LhjE7QOOuUEG5QigB2AK33vvp8/xDIi509nB4+GGq0Zyldz7EMJMqFhjTr3IKK AAABhwjsVHUAAAQDAEcwRQIhANzr69MMclk6mHyrK5dlYWmItdbbJSHfU5zfe7Ma QOxRAiAmcZopDB2hKnK/sh/qaIdDBKkgspWMTDB0k/+Z4Kx4ozANBgkqhkiG9w0B AQsFAAOCAQEAKDejiXEQdb/0JrTTy9MoAYeAXPKQnSFTMGkbKkUi4uUl15kLBEEi JN9LzOImTsiPRKU2wfWEaz+gaH0WdI+XTV4I71OYCsIMTo61kUQpRpxUofNTjjwN FeYzjg4XLMVpEuk4suXeA7zGwyaJfz1HFIpbFdu2nBOiFZ4SS8Gs5gPmBgByzsHw vjgRGfSDP18GNyzXe++8Dp2PS4liCPat3tBVHyrUHj5G74xqVG4Jwf2hA2dvbOKJ dfHtpEqSn1NhgFXnlfj8KsdWK1JZqO4AcdtVEvkJh2E0N2NZYBsyZUHeku8WxFum jBspAlxNeX9rxgU4l4hpxflr0+cIRyxLyw== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1McF3KzeZtzqWnp7htiz aIOT6WZ4EUVadWbv0/lCd8qlitVj4UGSwYlSF5bvdsAX6SkfapzU3MrsCKQpJvF1 KDty+fKXElDQogS0EhbwJSY/dD2Eh9+VAjUSbcbsmQUx2mlMg8ilp+cMzZnuuPx9 /E1/eBT59Zshcz98oYq295czSn5LMBgjTve0ZDLS6Qr8lC77/MOI8aQVNaqCbLNt zpGzKYfAzD5X8IIJKiR5TE8jE09fm8D6UfD6mMaVClGu+kD2QoTLeSr8MD+VKCja B5sMLLVUFmoj7q4te1iXbqwvFM2ibDQGXo8MTU71bEhYEnZ0URKiHkRQJEI5FRdE LQIDAQAB -----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 288636577503067417601346776812865579560979 . . . . . . . . [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 2023-03-22 09:45:18 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-06-20 09:45:17 +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 26860662501845358088812845786023722667880516167935883050227830917302250190125716490930961055610854540906912774309201531133267925450480907928926693976078948919295302941118815890051472293424337138609109675751313418105902698534749164324265492194167637109120877445213492027887933893041683973081052765532774958021956994881577976417048657050030920263974648556168828521348766852085237744337939627488141735365915368557586428351808233287908143775128636145155923764020157034614695310033421670801060739858108966993839344312670070802896788376482244740511996392023124985986263278782149406206887606911264193798906211849447992149037 . . . . . . . . . . . . . . . . . . . . [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) dbf21103c0b4a3cfc0c6194ad6a698d7be6754c0 . . . . . . . . . . . . . . . . [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) 00f10077007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018708ec545e0000040300483046022100a38584bb1fdad642a757923061667412bd7db85f134f4137981ac202b45adf7f022100cb4d935299ae31710f48d366e40aff282919b23fa2e18c4ed038eb94106e508a007600adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a0000018708ec54750000040300473045022100dcebebd30c72593a987cab2b9765616988b5d6db2521df539cdf7bb31a40ec51022026719a290c1da12a72bfb21fea68874304a920b2958c4c307493ff99e0ac78a3 . . . . [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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