www.cosima.net
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:6b:42:db:c1:8c:5a:ca:e6:7b:fd:9c:cc:19:d1:55:e5:7a 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): 03:6b:42:db:c1:8c:5a:ca:e6:7b:fd:9c:cc:19:d1:55:e5:7aSerial Number (int): 297835941142180074304415478530549854102906
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 29:c9:73:7c:dc:98:ac:cc:d2:8b:72:42:4e:dd:76:88:28:a8:12:2f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 90:60:e5:da:fa:46:75:98:23:5b:f5:50:e3:8d:ba:5c:2d:6b:45:9d
Fingerprint (sha256): 67:70:92:31:80:b1:fa:d4:1f:bf:7c:67:20:0f:19:58:e5:4e:74:85:ba:82:96:ac:48:16:c6:c8:84:8b:73:e0
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----- MIIGUzCCBTugAwIBAgISA2tC28GMWsrme/2czBnRVeV6MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA1MjgxMDEyNTZaFw0x OTA4MjYxMDEyNTZaMBkxFzAVBgNVBAMTDnd3dy5jb3NpbWEubmV0MIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAsABhKXuxkq9oOWIt+ZS08gRtstreIbhf 8LmEgPdY6J8hezLVB8SsmVsSM+vpPJfeti0yhUpC+JJEOmLdvi5fDfX2aXTxPG/U 26JoJTCxkGiZQ0wHs68MInkvfBpRIH0EXzt8un0abG/BMxLU4QBnO2mKwqvtMTv0 ply5cu06XZOTaTToqyTJRuxAi378/5v/dYfUD7z7LuOnfkV/AMbIdBUIDRl5YsSA CpaqWQ3jGj6KH/VsHaHhDHOZBXuBlvnVrc+QYN15GZnhjSOxLd/q4Q+QJv6LsDbv d4Aub48lCT3t0vlMyq7ab4Vhj1xQEzubakP4EjTt9ZkTLBgHZl7B6GaNrAr7Q1o7 uK62GlQ3TzCzOGS+1x2jSdY4tsPi400am2RKsRuTjfYgjuORLDdSgUbWgabEfYLa v7F8jf2ouH9Bs0LtsGqkKZngqETpxcjK1/4YyyGdd3A5EYgJWIOCLr2pnGylYzXp CuLBZA9If84wweLIWRuNkMk6XY5TFA+2j4r/eiihtEKmaJJbYUK04VFqoj1BJIOl spED0Vp8plkKsO7ly6gf7raiyHy6Mpvi/G/n5NuneGYgMnMjnsn52LGJv3GzRVhM 0qedktTzPPi8D1lwv9EzdqwcgzYCUW1O+sXCR8f18vUaXeTFiaQ/iPolrpd83edI 9+s2atLwuGkCAwEAAaOCAmIwggJeMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUKclz fNyYrMzSi3JCTt12iCioEi8wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAZBgNVHREEEjAQgg53d3cuY29zaW1hLm5ldDBM BgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIB FhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB1nkCBAIEgfQE gfEA7wB1AHR+2oMxrTMQkSGcziVPQnDCv/1eQiAIxjc1eeYQe8xWAAABav4kqjEA AAQDAEYwRAIgWcXuRlbLfvLT8oj2JcssaVNCtWAHy4rD35DbzNkKR8gCIH6wFXOp 6YoXbvsyj6yKTt4LtBodEcsjj4lgNyfMlIfgAHYAKTxRllTIOWW6qlD8WAfUt2+/ WHopctykwwz05UVH9HgAAAFq/iSsEwAABAMARzBFAiEAwGC4zHPAJac7si6Msd7q cduzRmArvvHCfMkRMObS6kICIEP5Wu14wtAD1SsjYzfrKrT6C8XaJW0QW/ehNjOA dtjnMA0GCSqGSIb3DQEBCwUAA4IBAQAHnqzgv/y0H6pgSoF6tassYDCeLNzFz8U0 QuHCfnsTPtJAMlvmbvxsoq1wHg7Ls8rDoE4ayChiEj/88lAWFruL0gLSHWUgv8+E l+04w4BmzlJzigqhAUxqR+GLQgLpebmDO+hJF+IXbhOQdqisCLfjqekeUJGT318R 5SHiRH2BLzWjuaa5wJFzAX3pv9XY7rfHosB3icrRUaN2GtCCP9RxLR1i9OhJLE9M GXwMWR/4i0NUvFgUpI2Bi37Pj6hmhZlXwS8qS91wVy2EYuQ5GC1Bkl+suiae0gtG QsHEGIeJMLOqm2jj3e57uNaViHHYtrbyDD5/0IdkaLb3O9yOP3dx -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAsABhKXuxkq9oOWIt+ZS0 8gRtstreIbhf8LmEgPdY6J8hezLVB8SsmVsSM+vpPJfeti0yhUpC+JJEOmLdvi5f DfX2aXTxPG/U26JoJTCxkGiZQ0wHs68MInkvfBpRIH0EXzt8un0abG/BMxLU4QBn O2mKwqvtMTv0ply5cu06XZOTaTToqyTJRuxAi378/5v/dYfUD7z7LuOnfkV/AMbI dBUIDRl5YsSACpaqWQ3jGj6KH/VsHaHhDHOZBXuBlvnVrc+QYN15GZnhjSOxLd/q 4Q+QJv6LsDbvd4Aub48lCT3t0vlMyq7ab4Vhj1xQEzubakP4EjTt9ZkTLBgHZl7B 6GaNrAr7Q1o7uK62GlQ3TzCzOGS+1x2jSdY4tsPi400am2RKsRuTjfYgjuORLDdS gUbWgabEfYLav7F8jf2ouH9Bs0LtsGqkKZngqETpxcjK1/4YyyGdd3A5EYgJWIOC Lr2pnGylYzXpCuLBZA9If84wweLIWRuNkMk6XY5TFA+2j4r/eiihtEKmaJJbYUK0 4VFqoj1BJIOlspED0Vp8plkKsO7ly6gf7raiyHy6Mpvi/G/n5NuneGYgMnMjnsn5 2LGJv3GzRVhM0qedktTzPPi8D1lwv9EzdqwcgzYCUW1O+sXCR8f18vUaXeTFiaQ/ iPolrpd83edI9+s2atLwuGkCAwEAAQ== -----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 297835941142180074304415478530549854102906 . . . . . . . . [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 2019-05-28 10:12:56 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-26 10:12:56 +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 '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 718023404350373457459614581265468102312234216509257368775421750008075846200539115874323319555283355397205884903391350873244579463219755620980038752992143492611722724757234088507615589093317906721331744039367900901604297170618054249768386855891495247129721337802209139231801241658991145604609177603241734737480147402018678069422885195336999280066165230064586269271092521423660015181550470318183444024148567783338613066059044069628751160346255583490323294970232763231807574780929015161050956373404624069863215375248158028793553565167303158115137731547069586686155152237699525437350865750402335045410923872796503736520484627790187024808610765588606971478923503582865875284111707526951863688063348085091592755700180569018165041974753224621494422010924294817799280550755189898604664714429362202232330732435263772823693335488171005863729558808726772015980637664320430300184230953899569836517539488091785502153514981795068785975590070960823729260038734078749384257183014677141198393183686985226246956412712995176767220680234055596618442126284781220045267473389709605532207411187388808647613153479863161115609638423820769680127076274883566442470040594841023566952180044682384754745895766597264483195758622102616562403736561744000525343438953 . . . . . . . . . . . . . . . . . . . . [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) 29c9737cdc98acccd28b72424edd768828a8122f . . . . . . . . . . . . . . . . [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) 00ef007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016afe24aa310000040300463044022059c5ee4656cb7ef2d3f288f625cb2c695342b56007cb8ac3df90dbccd90a47c802207eb01573a9e98a176efb328fac8a4ede0bb41a1d11cb238f89603727cc9487e0007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016afe24ac130000040300473045022100c060b8cc73c025a73bb22e8cb1deea71dbb346602bbef1c27cc91130e6d2ea42022043f95aed78c2d003d52b236337eb2ab4fa0bc5da256d105bf7a136338076d8e7 . . . . [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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