cukstudio.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:13:91:90:04:46:75:a1:eb:c6:3c:b3:44:b1:b0:d6:51:b6 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=cukstudio.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:13:91:90:04:46:75:a1:eb:c6:3c:b3:44:b1:b0:d6:51:b6Serial Number (int): 267995708603627027849649569835842838876598
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 07:28:26:06:84:ce:7f:3e:33:30:84:02:65:c1:34:df:11:12:40:5f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 1e:f0:e3:34:ca:1f:24:1d:5f:e0:4d:52:b1:1d:f1:bb:d3:1d:d8:1b
Fingerprint (sha256): 11:6a:84:47:40:f4:e4:1f:93:66:f9:32:b2:17:13:17:55:f1:0c:94:97:60:15:18:e8:22:b8:c5:29:b7:f1:36
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate cukstudio.com
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for cukstudio.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
*.cukstudio.com
cukstudio.com
cukstudio.com
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Certificate
The complete raw certificate details for cukstudio.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGFTCCBP2gAwIBAgISAxORkARGdaHrxjyzRLGw1lG2MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODEwMjMwNDU4NTZaFw0x OTAxMjEwNDU4NTZaMBgxFjAUBgNVBAMTDWN1a3N0dWRpby5jb20wggEiMA0GCSqG SIb3DQEBAQUAA4IBDwAwggEKAoIBAQDi8SmUOHxLQjcWwjIxrujLntA1FvlVm5qG qR9LW6LjdRSHo7oA/21zXMRyR68/xhto57H3i0W82s2NBbWnK+ScG75ZE/mfn87X M8a4yst24317PGoqLRDfG6Nwpx+43guloL964n4f77mvVo+GFJzNditAY9SO9Ylb /mCl57bylS/mrc9v3Px1UxVueKqsUS8Vpcv91oGJh+LqX9UwUgiv3bGlEYblbM7x 2etkRAFwH06VTjSI50UPAeODuPmO2JbG0pslcF7VlTPlp3OBU7PLwfp7LcBzHxDU s2KtpYzNty6LgHCIiOmJmYLc+KhaffA17yGAPJc+TCI1MK+xLgdjAgMBAAGjggMl MIIDITAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUF BwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFAcoJgaEzn8+MzCEAmXBNN8REkBf MB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsGAQUFBwEBBGMw YTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNlbmNyeXB0Lm9y ZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNlbmNyeXB0Lm9y Zy8wKQYDVR0RBCIwIIIPKi5jdWtzdHVkaW8uY29tgg1jdWtzdHVkaW8uY29tMIH+ BgNVHSAEgfYwgfMwCAYGZ4EMAQIBMIHmBgsrBgEEAYLfEwEBATCB1jAmBggrBgEF BQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwgasGCCsGAQUFBwICMIGe DIGbVGhpcyBDZXJ0aWZpY2F0ZSBtYXkgb25seSBiZSByZWxpZWQgdXBvbiBieSBS ZWx5aW5nIFBhcnRpZXMgYW5kIG9ubHkgaW4gYWNjb3JkYW5jZSB3aXRoIHRoZSBD ZXJ0aWZpY2F0ZSBQb2xpY3kgZm91bmQgYXQgaHR0cHM6Ly9sZXRzZW5jcnlwdC5v cmcvcmVwb3NpdG9yeS8wggEDBgorBgEEAdZ5AgQCBIH0BIHxAO8AdgB0ftqDMa0z EJEhnM4lT0Jwwr/9XkIgCMY3NXnmEHvMVgAAAWafgTShAAAEAwBHMEUCICBDmFZH gBLV59ei4n0ASOg3B1xra39/yljMF1rnnAKMAiEAsblZo8+kzNdY2E2X9KsnBuEc M6yzMrxDqnizXj4qmpUAdQApPFGWVMg5ZbqqUPxYB9S3b79Yeily3KTDDPTlRUf0 eAAAAWafgTSlAAAEAwBGMEQCID74kH7Gi1Cfr3fvl3cI3ga6o/KCOfBPscrd422A E0GxAiAI6aJxYNnMeuaSTGbjU2RDljDxjdmKm9+N0hZb1qW15TANBgkqhkiG9w0B AQsFAAOCAQEAbzn5Rna/EM1pbHsLDazUX0w8DNPlMQLRCqZFjOvPYZplIzB35tBp X6pm5XlBA+H2oUWQ/mxyR0nKu7jYCoqhYz5zImi3NLxZ7d6dSv4NG8izDO9FoHpL 03CiAtGGuQIXHF+GlMEeayU/SuAyClslWqpzLtZ106Aj31XMTDlwInGQZlkrTK9J p2i5/fHj5UZ3i8254FN1lKDuFr4wRCRJfzpiHehlZ1IlJR44KdsVmY734MqaWoaE IixdvGOtOdbgOFABQ7OFAleSooCUGAj4rp3o1ZX/GJu7R2b/wFOzamrwolQGEZy4 aYF9WhJEjr2XRsMPO2W2bx0MiVlZDfSYlA== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4vEplDh8S0I3FsIyMa7o y57QNRb5VZuahqkfS1ui43UUh6O6AP9tc1zEckevP8YbaOex94tFvNrNjQW1pyvk nBu+WRP5n5/O1zPGuMrLduN9ezxqKi0Q3xujcKcfuN4LpaC/euJ+H++5r1aPhhSc zXYrQGPUjvWJW/5gpee28pUv5q3Pb9z8dVMVbniqrFEvFaXL/daBiYfi6l/VMFII r92xpRGG5WzO8dnrZEQBcB9OlU40iOdFDwHjg7j5jtiWxtKbJXBe1ZUz5adzgVOz y8H6ey3Acx8Q1LNiraWMzbcui4BwiIjpiZmC3PioWn3wNe8hgDyXPkwiNTCvsS4H YwIDAQAB -----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 267995708603627027849649569835842838876598 . . . . . . . . [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 'Let's Encrypt Authority X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-10-23 04:58:56 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-01-21 04:58:56 +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 'cukstudio.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 28648778542873903498871980546640076493751823528693452159793701339317983664668225811494405230489754911028199230411201566361807240542668261239036568120145651306546073383327694779899711394065501238646362389155851211549399274508299858381654291563605567097377557243173041882217931344700767265959490734178174092910958084820442675681261834813883750214598063113381633495698167748716227041505397821554263403624391055583469913125408238961047636251978154826163706097625876358189405479430865277891537582446293447012072776054485980329056298334525648102717556850558376994696867194480401608600836307630203769038828840267037337847651 . . . . . . . . . . . . . . . . . . . . [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) 0728260684ce7f3e3330840265c134df1112405f . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (34 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.cukstudio.com' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cukstudio.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 (246 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 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . . . . . . . . . . . . . [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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc56000001669f8134a10000040300473045022020439856478012d5e7d7a2e27d0048e837075c6b6b7f7fca58cc175ae79c028c022100b1b959a3cfa4ccd758d84d97f4ab2706e11c33acb332bc43aa78b35e3e2a9a95007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f478000001669f8134a5000004030046304402203ef8907ec68b509faf77ef977708de06baa3f28239f04fb1cadde36d801341b1022008e9a27160d9cc7ae6924c66e35364439630f18dd98a9bdf8dd2165bd6a5b5e5 . . . . [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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