www.zajac.boston
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:d8:fa:37:06:4e:26:d9:e2:17:81:71:a4:f8:b6:6a:dd:b3 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.zajac.boston
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:d8:fa:37:06:4e:26:d9:e2:17:81:71:a4:f8:b6:6a:dd:b3Serial Number (int): 335170441753363174564693270678277020376499
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: b9:4a:43:15:e1:89:43:35:9d:22:2e:32:1d:8c:be:2d:74:e6:e6:b4
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 56:ce:c0:94:58:d6:cd:37:bd:ac:16:2b:4e:ba:ec:c0:49:21:d9:32
Fingerprint (sha256): c4:30:51:46:45:3d:01:20:fc:a7:7c:02:d0:3e:34:49:27:2a:b5:73:56:26:dc:54:72:1b:bb:3e:0f:29:df:c7
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.zajac.boston
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.zajac.boston
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.zajac.boston
Other certificates including the domain name zajac.boston
(limited to 100 certificates)
Certificate
The complete raw certificate details for www.zajac.boston in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGWTCCBUGgAwIBAgISA9j6NwZOJtniF4FxpPi2at2zMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMjMxOTU2NTVaFw0y MDAxMjExOTU2NTVaMBsxGTAXBgNVBAMTEHd3dy56YWphYy5ib3N0b24wggIiMA0G CSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQDZVz1GgkLAwJ+IfUBDc9jkH4zsByGP BjExToXlH2VlcvIxEwGJ3wmOGg6COMMq4S8M5GZLQy5MdrT/rKYEsOg34hL+whq3 3MxJJb9cMgkNkxrDsB+KRBNE5FaE11PTROjQs/qXhxKwHH1WwokoUD/NEoc43Gu5 humKg+f6qJ/onNXl9pHJ5ZNCl1GlQHK0Ham6lD0HQ013U5baA+328qjqT4YuWRur 4y2oOH5ns5hM5G0EWZDhGYZeHfSHy/il4TMxJLPzeIxQR6JwmDZesO9yM9FtnvyH y/ENN1k6yJwi0aJ76PtTEe9lrPFckhdYALWhCensl5o/c6B38BJePGlBUZ+PiEvC Xr2Uzivhp7pD3WkDmKpEwmmh82DAZyoC1GbzZZx74Z2440TfLY3MSNZYz0mGbpkq eWeHKwq2crQ0l1/bASSzCUo+WKyTPlJRTxjxIvwhbnCht5bKlcydPAMxZ3FDeRTG zsmO6MrAGLfrgy2nTKO0D6mau5vPwxoaSi/RdiezNfRnGq0NmnytvE9/6SNghsJD uo/LMQyUl0u860SUYJSZplmMbOtorFqmjXFcagxXSWr7DI1UagG0XU6a6PxJbd8B +BdnWjFk21QAgE7HblltBzMvPYvGOuoDbmfM3Yw3JK2biRTbJz4N1CL4uhr01As6 mX0O19tKRceNLQIDAQABo4ICZjCCAmIwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQW MBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBS5 SkMV4YlDNZ0iLjIdjL4tdObmtDAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv 86jsoTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmlu dC14My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0Lmlu dC14My5sZXRzZW5jcnlwdC5vcmcvMBsGA1UdEQQUMBKCEHd3dy56YWphYy5ib3N0 b24wTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEF BQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEFBgorBgEEAdZ5AgQC BIH2BIHzAPEAdgBep3P531bA57U2SH3QSeAyepGaDIShEhKEGHWWgXFFWAAAAW36 aH2EAAAEAwBHMEUCIAltHhnEEAC/9Pw6DLYo/bh27VSPbCqO6nNwXn2G82G3AiEA qO2JaTL2rIave7Sup4pduLwHNxDh1HsyEKkUHe5s6tgAdwCyHgXMi6LNiiBOh2b5 K7mKJSBna9r6cOeySVMt74uQXgAAAW36aH2CAAAEAwBIMEYCIQDN/Z5/7Wyg0IuJ wznu89mkhQFQHYV3985/y+d65dwwowIhAOSo1h078bTppEAKQ/KRzZOrc9kh8L++ B6brDFuYXbB6MA0GCSqGSIb3DQEBCwUAA4IBAQB5haGLwilh4PkdxGF4e8Es00Ki gtNVvUrVxkqobUWNOJjXbJOUiyuOSedVv3vvEpiA2H6VVa3+J5aBSCcVoP/MAjLX npqHBSgLxTHotKlMcnH1J4pxQAyRjyGTEDA6qlHNGbFbTfA0bR3GPEVz7+WPCfMP VSNAMHPl8yU8mcwcLio+DKGRRsESHGHkJzeWxStZMuzOoZaoJSyYZFg7nEoyr3I3 mh1nKbIxfvmQXbQH6oAvGgCuWfTl7ONRBr0FSSQKYjV3p0v6OIW3sApWuvneLbFY v7sjFZYT2dMpkkhnSNo0QIzgnGjR+i2RzwP4tXi07wHlJ3mGAAa93/jlJrj+ -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA2Vc9RoJCwMCfiH1AQ3PY 5B+M7AchjwYxMU6F5R9lZXLyMRMBid8JjhoOgjjDKuEvDORmS0MuTHa0/6ymBLDo N+IS/sIat9zMSSW/XDIJDZMaw7AfikQTRORWhNdT00To0LP6l4cSsBx9VsKJKFA/ zRKHONxruYbpioPn+qif6JzV5faRyeWTQpdRpUBytB2pupQ9B0NNd1OW2gPt9vKo 6k+GLlkbq+MtqDh+Z7OYTORtBFmQ4RmGXh30h8v4peEzMSSz83iMUEeicJg2XrDv cjPRbZ78h8vxDTdZOsicItGie+j7UxHvZazxXJIXWAC1oQnp7JeaP3Ogd/ASXjxp QVGfj4hLwl69lM4r4ae6Q91pA5iqRMJpofNgwGcqAtRm82Wce+GduONE3y2NzEjW WM9Jhm6ZKnlnhysKtnK0NJdf2wEkswlKPliskz5SUU8Y8SL8IW5wobeWypXMnTwD MWdxQ3kUxs7JjujKwBi364Mtp0yjtA+pmrubz8MaGkov0XYnszX0ZxqtDZp8rbxP f+kjYIbCQ7qPyzEMlJdLvOtElGCUmaZZjGzraKxapo1xXGoMV0lq+wyNVGoBtF1O muj8SW3fAfgXZ1oxZNtUAIBOx25ZbQczLz2LxjrqA25nzN2MNyStm4kU2yc+DdQi +Loa9NQLOpl9DtfbSkXHjS0CAwEAAQ== -----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 335170441753363174564693270678277020376499 . . . . . . . . [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 2019-10-23 19:56:55 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-21 19:56:55 +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.zajac.boston' . . . . . . . . [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 886673018720565858479261518399006284635719703460659679856843246113103095759842092401770751692312996192959294325639826588280555273707603072984583687911845078859421070484591092322750959206693633962494809880374598392940327697705149269246912728933153274544484986342463139246329252713333977072898267573447193941421874526992409946670597020855031685098507392292379329736162715316498397210371239912236626270715199186137963848254122207103014161106830577804430468312913062672391018253697447363077044433426628748155470210354500422214759546871762421280290153455709335390535963612887155975482296942180956956064901155292046018387324774332363530497009979057196537488759390184945560017479005132991881809462476435307277361218113180955884405951877130296898912499955659999593609132008924938086956869323453312939879256631601540892675527637488950024122701768229378964701441870213699436974270047097478239191309705502372392000605842857587320415868368437100585182209138206710613323054481797671649068323855428899619015908072624005210927961049253138586468323877697133098772137571015968325802733102021641260085872122565663503125967987425916574381745305926966302556255690624214291447673196751278928610216192412142431143767661690489195494622319008279872873663789 . . . . . . . . . . . . . . . . . . . . [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) b94a4315e18943359d222e321d8cbe2d74e6e6b4 . . . . . . . . . . . . . . . . [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 (20 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.zajac.boston' . . . . . . . . . . . . . . . . [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) 00f10076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016dfa687d8400000403004730450220096d1e19c41000bff4fc3a0cb628fdb876ed548f6c2a8eea73705e7d86f361b7022100a8ed896932f6ac86af7bb4aea78a5db8bc073710e1d47b3210a9141dee6cead8007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016dfa687d820000040300483046022100cdfd9e7fed6ca0d08b89c339eef3d9a48501501d8577f7ce7fcbe77ae5dc30a3022100e4a8d61d3bf1b4e9a4400a43f291cd93ab73d921f0bfbe07a6eb0c5b985db07a . . . . [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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