www.cosima.net
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:d6:81:d1:ed:97:42:f8:d2:71:ee:d5:f7:14:1c:62:1c:4a 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): 04:d6:81:d1:ed:97:42:f8:d2:71:ee:d5:f7:14:1c:62:1c:4aSerial Number (int): 421442130668536761117386650055904359226442
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 30:f9:d9:8f:63:59:21:32:a5:95:1e:2b:09:52:00:88:2c:30:53:76
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 07:a4:6f:fd:7b:4a:d3:d2:1e:4c:67:b8:4d:80:99:fb:78:17:67:2f
Fingerprint (sha256): 69:bd:83:cb:28:d9:8c:c3:93:fd:41:bf:7a:28:27:53:98:99:d5:82:5b:4f:51:ed:fc:be:02:02:d8:1a:bb:4e
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----- MIIGUzCCBTugAwIBAgISBNaB0e2XQvjSce7V9xQcYhxKMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEyMDIxOTU2MDZaFw0y MDAzMDExOTU2MDZaMBkxFzAVBgNVBAMTDnd3dy5jb3NpbWEubmV0MIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAzMLoCkbOpbdhzEcj46VBFbAsQdyZasOB UOjsnNuezft7GFIAyCfi9LRvO5btK8lMcTQoCInHwo66mywlZc1/gtImSX9SyHP3 jX9bJrft46X116QiYjyo33gwa0zObQEgMbwyazebhS9eG7+AtBrhds53pVUv3/OA L/zXMM/K7i0oOpmK1o2npPnAmvJMgbqVfsyPbwPToArlaKzAeIKdyP3rfpRQwa3u 2iWDBGluCJY61Qk3tPhpmIRkdxN3/73Jfqh/X3YcyW0XIqYA8BTBK1tBgwUP0rHt mgnD3xawugUmfpOH0T+oQlLjhNZeUAlnNJNgDrR+YBY78Cl6Lbz/ZifTD3iaokX7 79zbwC/2xl/tNDmbpbRO+jwm5cd3W18p6kryBWRXcM/fV9HrfZAGFU4TiXTzBUhR nAfiRfNd1icD9jxqAbQn/QzLncsdKEWB9z9Fb+9Sdk6N272eKGYGtHlS0VXHhLdW IHzGPphBFWlfboViM+R9Euxzsv7KXtICsToplTOSLxZ58nzjg3pfrMax9d29eFLP F0UHO94oqqjfCv1+LAsg6/R7E6QvqggrxjfxvpY+5phDkr/Cu9r506rJlyf2XZUD hBOInLlMZq29Gu3oYLxXLzFIs3AX/heS2JcbXquGVNDnPEYoSK4FjoynR3OVCXJ+ b0NAkIU0mikCAwEAAaOCAmIwggJeMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUMPnZ j2NZITKllR4rCVIAiCwwU3YwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAZBgNVHREEEjAQgg53d3cuY29zaW1hLm5ldDBM BgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIB FhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB1nkCBAIEgfQE gfEA7wB2AF6nc/nfVsDntTZIfdBJ4DJ6kZoMhKESEoQYdZaBcUVYAAABbshmIHcA AAQDAEcwRQIhAPBK5tploapkm1z78qHeyyI49c+B5KcsV4SuxsQrhV59AiAk1tUf aGPEJjSIyrDS0jy/erbewnJSFhrXMb2kW5fVbgB1ALIeBcyLos2KIE6HZvkruYol IGdr2vpw57JJUy3vi5BeAAABbshmIFwAAAQDAEYwRAIgNYomJKbzzeX6TjJwWmrn NKKRF+CE5yMrPX4g/lSQBZcCIC/RFIvumDHPqZkekYMdcfjH2VcC79AVuClgM+Wl g3t2MA0GCSqGSIb3DQEBCwUAA4IBAQA8yeX5/78H/3f7KhWU0P/o1lsMXKYB0JPm ixEwsSQaCLx4REYF3ndwFZuCmC38YlNnYeFxpkfHq4ftedo2KYsA4Ro53IQ2hTHF d6yBNzYAW/Y/HwRq8244Q7pA4yDlW/i9Znz9bp0lKtvt4XMxjVppJ0LCB+sTMLX/ XNOTpPOazaS4vzfTpJhn7YVc1KIPjn7tc19hKqCEjj6I1o3wu/l5A64s0StNqcAB AS2wqGQKZ0ZRyZC5/tqlmu0LspdbeLVeTjY+K/rJZDgmr5j03dcHgMAX4qqUySOA 9ZEKZPvcTHdnxWfCVfuTNuhNE4DA/uDpTMIm4L5MEME9Kd69FL0z -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAzMLoCkbOpbdhzEcj46VB FbAsQdyZasOBUOjsnNuezft7GFIAyCfi9LRvO5btK8lMcTQoCInHwo66mywlZc1/ gtImSX9SyHP3jX9bJrft46X116QiYjyo33gwa0zObQEgMbwyazebhS9eG7+AtBrh ds53pVUv3/OAL/zXMM/K7i0oOpmK1o2npPnAmvJMgbqVfsyPbwPToArlaKzAeIKd yP3rfpRQwa3u2iWDBGluCJY61Qk3tPhpmIRkdxN3/73Jfqh/X3YcyW0XIqYA8BTB K1tBgwUP0rHtmgnD3xawugUmfpOH0T+oQlLjhNZeUAlnNJNgDrR+YBY78Cl6Lbz/ ZifTD3iaokX779zbwC/2xl/tNDmbpbRO+jwm5cd3W18p6kryBWRXcM/fV9HrfZAG FU4TiXTzBUhRnAfiRfNd1icD9jxqAbQn/QzLncsdKEWB9z9Fb+9Sdk6N272eKGYG tHlS0VXHhLdWIHzGPphBFWlfboViM+R9Euxzsv7KXtICsToplTOSLxZ58nzjg3pf rMax9d29eFLPF0UHO94oqqjfCv1+LAsg6/R7E6QvqggrxjfxvpY+5phDkr/Cu9r5 06rJlyf2XZUDhBOInLlMZq29Gu3oYLxXLzFIs3AX/heS2JcbXquGVNDnPEYoSK4F joynR3OVCXJ+b0NAkIU0mikCAwEAAQ== -----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 421442130668536761117386650055904359226442 . . . . . . . . [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 2019-12-02 19:56:06 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-01 19:56:06 +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 835353439744679026824831648904021657793344206687070585085325997371280446297980089922031010778857984834464529508403739770898187004155440062619762562938231060848929971705125808730822357640676784456934687795590906599044707734366271905368163635781198414815025631065003103436509042647586661148856402671053023251039017311737274453292876625463070556987895525193397497514797043393402534583842872258249911823926089803145738167136011432138878991944592305961559063722820038825101231879581374610424509705684650236466909468710650774102064533863427306081153884175280683622737694376843226996723283223431995614110248846550447786063805706364438406904159358875214192788584263876945044632870143345294956930025654040200938064057695136504395451234532790228501614715242427475879047569069873470024701513903500436402321011137136440184177556923035423899076326600288063014908942694731077681768220935399785368357184676340425530021970905359071291660585529772386948732435045080539103327318917017546261376853814294038764131598195224884670003425181094638819550743385857455625115607972613682268770435713033451425339638922645115479860540184108146432474438079434624230157247706956458347316178529777341739227323645696940407089521177799928024883445726088087209784941097 . . . . . . . . . . . . . . . . . . . . [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) 30f9d98f63592132a5951e2b095200882c305376 . . . . . . . . . . . . . . . . [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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef0076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016ec86620770000040300473045022100f04ae6da65a1aa649b5cfbf2a1decb2238f5cf81e4a72c5784aec6c42b855e7d022024d6d51f6863c4263488cab0d2d23cbf7ab6dec27252161ad731bda45b97d56e007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016ec866205c00000403004630440220358a2624a6f3cde5fa4e32705a6ae734a29117e084e7232b3d7e20fe5490059702202fd1148bee9831cfa9991e91831d71f8c7d95702efd015b8296033e5a5837b76 . . . . [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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