www.zajac.boston
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:ad:6b:4f:23:34:1f:2d:30:7d:56:f5:b3:e0:fa:29:b8:26 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:ad:6b:4f:23:34:1f:2d:30:7d:56:f5:b3:e0:fa:29:b8:26Serial Number (int): 320348345573617753613321121905607373862950
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 15:21:be:60:ee:5a:ec:47:dc:85:4b:b9:26:85:65:ca:0e:db:ef:f9
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): a6:db:6a:d8:8f:07:5e:27:ab:68:ec:9e:91:88:1c:c3:b8:a9:fe:cc
Fingerprint (sha256): dc:b7:45:31:e3:1a:36:ef:6c:b1:cf:b3:1b:58:0e:cc:69:5b:4c:17:89:21:aa:a1:25:7b:67:7e:14:73:bf:cd
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----- MIIGVzCCBT+gAwIBAgISA61rTyM0Hy0wfVb1s+D6KbgmMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA2MTcxNjM1MThaFw0x OTA5MTUxNjM1MThaMBsxGTAXBgNVBAMTEHd3dy56YWphYy5ib3N0b24wggIiMA0G CSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQCZlJ/WMjjaZyAbNPPO3xWSyD61s9qx r4G5NYaSZ9pWb+YVp73HsAqET3WMNECFpd40t+KmWmfGm/zFdtPl8sdUwJ0jy14a DY0n82G17PSwzzJ2rGwOFtKZ2DntuspehVhQE55jlvxXJSTw8OAGh4WDf1s1Gp9a UW1zMjaS3pzeFU/bmEfoIVFvGWbvlKKO+NsJNEracDQZen4h43tlVbJCi1hY0XEj QWmHB2sFNzkk058WC+GNrMzwyFnPrxF/597tnvIZGkV26tRfz0IeUxqGR0A77Lg6 5Qksc23Fc6e/Rh9GQxkn4H8SoDzI8ZfmHuH/VRObk2mxE5Lr98gcMcZV4yTS4a15 d1YJmkVOpK3WjiZgJRO3K+L+677g4Af0ArdRD0Gsn67Hmp5qnoQfP6R6Jv5UzIhJ KG//V98v3P81TzZfWbOR//ve73yHpDgcwrK+LggpehZgWcszWHgUOj+M0Pl5vj2N TOw1/KBJ2sWkh8SB8mfkUIdkYfdQuuZ+XvIudBu2AZCZogcNPhxLhzOhWjSRbbbN i1EcIoYQKcI1LBHUzw6aZVnPo0uLwA7m/ySIlivcLSwkJfSbGZzzhqMIZp5nBdB8 XNw+uM9hBAkYIQGpKsGnHqE1Nsl0tcJmUrawtHWv4uMTpzaVGIZDhPVD9gTTOE43 auEz32rM6nqtmwIDAQABo4ICZDCCAmAwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQW MBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBQV Ib5g7lrsR9yFS7kmhWXKDtvv+TAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv 86jsoTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmlu dC14My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0Lmlu dC14My5sZXRzZW5jcnlwdC5vcmcvMBsGA1UdEQQUMBKCEHd3dy56YWphYy5ib3N0 b24wTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEF BQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEDBgorBgEEAdZ5AgQC BIH0BIHxAO8AdgB0ftqDMa0zEJEhnM4lT0Jwwr/9XkIgCMY3NXnmEHvMVgAAAWtm gepmAAAEAwBHMEUCIQD4ExXes8BEUj97Z5R2eyHcWWq+LlbIsoXF4mEYqWs80gIg cnDBIMIocZI8hVde2FPfH/7nk4yMv7xu9BjGn9gAwLYAdQApPFGWVMg5ZbqqUPxY B9S3b79Yeily3KTDDPTlRUf0eAAAAWtmgehiAAAEAwBGMEQCIFmyJOfPiX47izYD 6mrOstrBBQuKhHzffu891iQaNsVXAiBKx75SvDlQWJv3m/5bqDpKM8k/EwTFfNwA uX++DMDrfTANBgkqhkiG9w0BAQsFAAOCAQEAIM873WJc/JWXINK7DGWeH+iZCsfW NDHponWcoBg3QoVLh0uD01zXnw1pQeOzdescjeZTN0yW9h4T59Wcd7kemfJJ0yvS cUZPrMmLlMpsEuOFya0n10/e7tGgbtK375Chm6Cw9kVBQhNjzNNrrFTWO3Mvo2ga ZVD+Mn7Uf/gC+Jk01imdNHLpTHUV3uJWvuqnDsUkkhJW51p/cZMZNiwns6+AL4oK PxSA/G+ymIAT/JJEjMuAUzwk4uxCOof3lC1EBF3dsMHfYIn9Jn61OEOWFAo59c4w QuCQuz/XgX8YRPTrUqbAhmE6I7iOvSfMczfRL6kI/iwEu/qhocIsrWfNcA== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAmZSf1jI42mcgGzTzzt8V ksg+tbPasa+BuTWGkmfaVm/mFae9x7AKhE91jDRAhaXeNLfiplpnxpv8xXbT5fLH VMCdI8teGg2NJ/Nhtez0sM8ydqxsDhbSmdg57brKXoVYUBOeY5b8VyUk8PDgBoeF g39bNRqfWlFtczI2kt6c3hVP25hH6CFRbxlm75SijvjbCTRK2nA0GXp+IeN7ZVWy QotYWNFxI0FphwdrBTc5JNOfFgvhjazM8MhZz68Rf+fe7Z7yGRpFdurUX89CHlMa hkdAO+y4OuUJLHNtxXOnv0YfRkMZJ+B/EqA8yPGX5h7h/1UTm5NpsROS6/fIHDHG VeMk0uGteXdWCZpFTqSt1o4mYCUTtyvi/uu+4OAH9AK3UQ9BrJ+ux5qeap6EHz+k eib+VMyISShv/1ffL9z/NU82X1mzkf/73u98h6Q4HMKyvi4IKXoWYFnLM1h4FDo/ jND5eb49jUzsNfygSdrFpIfEgfJn5FCHZGH3ULrmfl7yLnQbtgGQmaIHDT4cS4cz oVo0kW22zYtRHCKGECnCNSwR1M8OmmVZz6NLi8AO5v8kiJYr3C0sJCX0mxmc84aj CGaeZwXQfFzcPrjPYQQJGCEBqSrBpx6hNTbJdLXCZlK2sLR1r+LjE6c2lRiGQ4T1 Q/YE0zhON2rhM99qzOp6rZsCAwEAAQ== -----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 320348345573617753613321121905607373862950 . . . . . . . . [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 2019-06-17 16:35:18 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-15 16:35:18 +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 626554036537172369578617494640499258401313228919117945637956960852863903616508673466677560151299380958693759720307176422395989836989121938505749122575979914081702368412198476123309076218981887743368673644248106128345310825007901068898643471143856347117939342425157549785263831072166676652597841363442599584859610891028017965642610887803785290353195200000911556667388109885472743028126080571657703444346209565612724917809683961417412218789415707711722130149356399271782175214582856744015387971555787414676009425853642531069685204198061379935862086828846146299716059373888341168523830384522959730744983632221336383301663433528598876061214904276780664093280016285998863526903608669871518941577185040414109035262557117018531595918034089040223263771456239526720363575628217325416362811929654018505017369942930473282682072029395311896976747319888077727111391915329869756437114244423092401694348553253844410147222570017671559214558143066166698561137578395872398494456563011400831855144108582851084333423743444243423188663757197398364120560471912150207042538511840721977768617747465980809083465151094990670513665181214556156320757463380725567985453451549582687225388537202031577947561729369180843879996538505758682242092436530820986986737051 . . . . . . . . . . . . . . . . . . . . [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) 1521be60ee5aec47dc854bb9268565ca0edbeff9 . . . . . . . . . . . . . . . . [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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016b6681ea660000040300473045022100f81315deb3c044523f7b6794767b21dc596abe2e56c8b285c5e26118a96b3cd202207270c120c22871923c85575ed853df1ffee7938c8cbfbc6ef418c69fd800c0b6007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016b6681e8620000040300463044022059b224e7cf897e3b8b3603ea6aceb2dac1050b8a847cdf7eef3dd6241a36c55702204ac7be52bc3950589bf79bfe5ba83a4a33c93f1304c57cdc00b97fbe0cc0eb7d . . . . [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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