www.cosima.net
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:28:c2:7c:6f:41:b9:22:99:2e:7c:1d:0b:a9:b0:cf:73:3a was issued on by Let's Encrypt.
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=www.cosima.net
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:28:c2:7c:6f:41:b9:22:99:2e:7c:1d:0b:a9:b0:cf:73:3aSerial Number (int): 275206668804665603598812939316644027527994
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 27:78:22:dc:9b:05:58:c0:2d:0c:4e:d5:96:34:a2:e3:aa:89:d1:5e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 60:8d:cf:9d:9d:b2:2f:99:23:dd:7f:81:36:eb:66:19:a0:89:17:e0
Fingerprint (sha256): b5:f4:04:30:8c:77:65:44:c6:aa:53:48:be:85:60:00:28:08:2b:5b:21:31:f9:2d:51:26:a7:fc:09:01:b6:41
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www.cosima.net
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.cosima.net
Public Key Algorithm
RSA
Key Size
4096
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
www.cosima.net
Other certificates including the domain name cosima.net
(limited to 100 certificates)
Certificate
The complete raw certificate details for www.cosima.net in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGVTCCBT2gAwIBAgISAyjCfG9BuSKZLnwdC6mwz3M6MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAyMTQxNDQ5MjdaFw0y MDA1MTQxNDQ5MjdaMBkxFzAVBgNVBAMTDnd3dy5jb3NpbWEubmV0MIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxdXCGmJSWENBO+A24cyaoLsC1QxsZvBJ F2JC810/L6kX/ndSpqiBg6CM3yrrrJrA0gO9yWRJPjMz5rOKy9Xm9W1qVKUgXa8W xd3pGcETIBaZIzC96u8mBuJeIUFeIlGXX4m1gm7/Hs2NHntPNzVThPNXMnTLqcPS rDC61OfYTAme3Thizvufh9+aLeM+DLdpbc2jDK/pWSEneUZeSW3Z5pN3bK+rD54H XBCedHz2GLpT17xctZZfa/439GteElS7/9tRFTl/06g11hyfH+59yz8WT37/6o0I gBECgGPQssEAzvvpYOkWUhV5eegb8E+WjmnyLpjSGyGVDNG/6SCzSjQ9D4pPrZrq Yrq9io0RzIqnsApngHrkBZsxHyzjBYNdZnYFYOb0aCNqnZcq9MRIsSVRxfIdtkP0 HyPwdlaJPAqQEQ+rH6icb46K++FvcF3Tvb5Q4riWhkVsdMeY1kH+pArl2bI5hOAL w9KI4JuaAB/cwCHCjocvthWpjD9apiOMwp3XNg+QjD7HkbBJxh4/8Ygf5xhZkz/Y KobGxL3ueh1PZBMD9v+0/sGPqUqAOQpNb3mD8WKZ+iYrOBocuyo/p1CMwG5LSEq8 S7C6AW6CguxMTNe+fIBgm0yoYeV66XaMqyS3V3DMTyK3NOXvzHGuDLy0hY+rA8rN ARNBU1O/LKECAwEAAaOCAmQwggJgMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUJ3gi 3JsFWMAtDE7VljSi46qJ0V4wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAZBgNVHREEEjAQgg53d3cuY29zaW1hLm5ldDBM BgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIB FhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQUGCisGAQQB1nkCBAIEgfYE gfMA8QB2AG9Tdqwx8DEZ2JkApFEV/3cVHBHZAsEAKQaNsgiaN9kTAAABcERj+MYA AAQDAEcwRQIhAKYtchVYtBYkyDC5ZXJ8/MsEAjncnXtMYCu98xQrSIuiAiBjs+ot hllFEZIVoe8Ex/bUBo+a+i5of6Kkn2/B+I47fwB3AAe3XBvlfWj/8bDGHSMVx7rm V3xXlLdq7rxhOhpp06IcAAABcERj+LMAAAQDAEgwRgIhAMzhkLUXOwfnZRaoGkE5 NQnR0K5FBvWq/duBVrmOn6s+AiEA+U/V5iHA56KkaBmTJFnYyC0zjP9gz9osNTvh mnsIBGswDQYJKoZIhvcNAQELBQADggEBAEXZQ2MokGzwUnT/xw3hI0M0thWelavB GcH2bfjf/nqpI/jnEzAzLcy5YRvkL3a/zihPbK4gwMx0yn9OiMyIL4yYIxtko6El kbWpziFIJH/QrO071wL2vvhUyc4klpiLnQ8auLLbwfxjN7ydsY9KmZJOWfZVMruN jBiJ5LO115+xXXwZPZeIorXAk1MUGXhr8kPyiNxlw5vozT1rtdYsIi9CPdD9Kwjd soFWgTMjtXxRrQA+/oGe4e8mjI0v0iVLJMQDg2XdH+jme9wBp4ziEXwuL7jh8wN4 QxM+Clxr6Oonb1y8+9PoYKhGBdcv7Atoa4mxke1q20l2QIDRf0cElO0= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxdXCGmJSWENBO+A24cya oLsC1QxsZvBJF2JC810/L6kX/ndSpqiBg6CM3yrrrJrA0gO9yWRJPjMz5rOKy9Xm 9W1qVKUgXa8Wxd3pGcETIBaZIzC96u8mBuJeIUFeIlGXX4m1gm7/Hs2NHntPNzVT hPNXMnTLqcPSrDC61OfYTAme3Thizvufh9+aLeM+DLdpbc2jDK/pWSEneUZeSW3Z 5pN3bK+rD54HXBCedHz2GLpT17xctZZfa/439GteElS7/9tRFTl/06g11hyfH+59 yz8WT37/6o0IgBECgGPQssEAzvvpYOkWUhV5eegb8E+WjmnyLpjSGyGVDNG/6SCz SjQ9D4pPrZrqYrq9io0RzIqnsApngHrkBZsxHyzjBYNdZnYFYOb0aCNqnZcq9MRI sSVRxfIdtkP0HyPwdlaJPAqQEQ+rH6icb46K++FvcF3Tvb5Q4riWhkVsdMeY1kH+ pArl2bI5hOALw9KI4JuaAB/cwCHCjocvthWpjD9apiOMwp3XNg+QjD7HkbBJxh4/ 8Ygf5xhZkz/YKobGxL3ueh1PZBMD9v+0/sGPqUqAOQpNb3mD8WKZ+iYrOBocuyo/ p1CMwG5LSEq8S7C6AW6CguxMTNe+fIBgm0yoYeV66XaMqyS3V3DMTyK3NOXvzHGu DLy0hY+rA8rNARNBU1O/LKECAwEAAQ== -----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 275206668804665603598812939316644027527994 . . . . . . . . [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 2020-02-14 14:49:27 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-14 14:49:27 +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 'www.cosima.net' . . . . . . . . [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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 807096355752223520877660455935736065335172370672088608232370433905279754084119351838084466898552364726077171050028216722518627974714623273104632468266742293204386473484866649609405672925791890470118880831367407501456113483572465938613329816127654076030206565512941981377909319054622714526842853281606580851622018583370771846318660819821268751796400961323344528497571405167944301681665862243514066707301723555805184037670913719639661731285883369815875375973861224128171270760945120927464681324908649846817148134894395393313424368029597266841632256714515473917557949180896743299741813733878185951193756538417746059849379850418873152668929099350242613296823338545456265449445466280716644948388811350827837850450748706610169843110628119461011307253174177437151310610185382627755354534316148843310376743041475515802001664411161910078323932702556425000000883571986363835334342121343670208781939996897027044527445158090951054856568210053272509660543218284803787521314014527557349346674647201147787883385095632445861800337017638446330026709918083769222294758022795909087876532476650088134802367373609040064699459011794597477195059973372894061885258091383864110554322086115773789631428786869509089460355456679786711957208454045114859949862049 . . . . . . . . . . . . . . . . . . . . [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) 277822dc9b0558c02d0c4ed59634a2e3aa89d15e . . . . . . . . . . . . . . . . [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 (18 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.cosima.net' . . . . . . . . . . . . . . . . [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) 00f10076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d913000001704463f8c60000040300473045022100a62d721558b41624c830b965727cfccb040239dc9d7b4c602bbdf3142b488ba2022063b3ea2d865945119215a1ef04c7f6d4068f9afa2e687fa2a49f6fc1f88e3b7f00770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c000001704463f8b30000040300483046022100cce190b5173b07e76516a81a41393509d1d0ae4506f5aafddb8156b98e9fab3e022100f94fd5e621c0e7a2a46819932459d8c82d338cff60cfda2c353be19a7b08046b . . . . [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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