www.zajac.boston
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:0d:e0:4b:88:4d:0c:b7:2f:c3:b4:00:cb:3d:2c:33:81:1b 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): 03:0d:e0:4b:88:4d:0c:b7:2f:c3:b4:00:cb:3d:2c:33:81:1bSerial Number (int): 266058667823085361121827848622068299170075
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: f1:30:12:dd:e4:0c:0f:a0:bc:d3:d6:c9:ab:0f:54:15:dd:05:1f:0f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): b9:7f:be:56:ea:64:e8:7a:bb:43:1c:34:1d:27:d3:aa:33:a4:53:17
Fingerprint (sha256): 46:90:54:4d:c5:ea:62:44:5d:6b:33:c0:ee:8d:21:95:ee:60:42:a1:c6:8b:fa:ce:b3:12:6f:53:27:c4:a9:42
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----- MIIGWDCCBUCgAwIBAgISAw3gS4hNDLcvw7QAyz0sM4EbMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA4MTYyMjI0MTlaFw0x OTExMTQyMjI0MTlaMBsxGTAXBgNVBAMTEHd3dy56YWphYy5ib3N0b24wggIiMA0G CSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQCwgcBdsc2eVQLuydpJIMIeHL+FhfU3 ne2jJxcEovQoGfAFcCmdVxzVWCXfc55RZ6zX0AG0RQngUI9Y+tHt5DSQ/qafMONB c68CUPSBAMA0QsQOQlTFD0nshvonPjiDZ5ke1yNcbQvaw2+CM3gb6A6KP7WI4eW+ 207L3E5VHnf+TRuyY8noXnPRsmOFzZDYKFU9tuUlwFlVnxFAejfYFZRGf6deMnkm eqQqOJBKOXOSwnzD/zDjN6l+QaJLwWwGVSkFcGWTHs/T9qFMC0LExcd0p5QZ7IN4 AAa7c5jCm3dt2bweAuPwJUWAiah1qJY+IY6LA4V64qARL4G8apOBHpd+SwTXMntS mONlIb6KvpCO8GNXDcVbZxxoSkSmKaET0wrF7heukIwyNs5QBj3E7O+eJrXAnP3m 4L8uuKGJiqCkD3wU27Pnwp6rmLEc+z2HLA1dQg4BLNElKLGdNjyFI8jlZCleCjTw rta4B6MWN5ro5sZV7ZHGQEfNoIFysHdpPg4IN0+vE2rves7FHc1VPV3rOpTsTpYV QXwq0vvUfFgp4FVVGyz8UGsEQ89R7m03gKBNxIrTmgS15vFqJgmTFQV7sfnmcxbL Z2rdB6aAqnGMiZm2rB3o1Id4dI2dQhd7qJa27ahL0Uu+GNTv+DcbOx2jOElGF2bB tz7KqCA400kGMwIDAQABo4ICZTCCAmEwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQW MBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBTx MBLd5AwPoLzT1smrD1QV3QUfDzAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv 86jsoTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmlu dC14My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0Lmlu dC14My5sZXRzZW5jcnlwdC5vcmcvMBsGA1UdEQQUMBKCEHd3dy56YWphYy5ib3N0 b24wTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEF BQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEEBgorBgEEAdZ5AgQC BIH1BIHyAPAAdQB0ftqDMa0zEJEhnM4lT0Jwwr/9XkIgCMY3NXnmEHvMVgAAAWyc vwVdAAAEAwBGMEQCIBw5KK6n45ziLnW/6LvGwbDtlzoEkDZU6z86HwE4+VCQAiAV i1+aXeB6oaZS09foi8dhRIDp4nfbXXRszrPozlN/owB3AGPy283oO8wszwtyhCdX azOkjWF3j711pjixx2hUS9iNAAABbJy/A4cAAAQDAEgwRgIhAIn+A2UqN5VY7nNr MCnt2aX3AkS/dQdn07cVN/JzcuzEAiEAr0Eb4mnRuFc2gusuoe+M2A8Qd/EaNF5y 9kvhu2qSjjowDQYJKoZIhvcNAQELBQADggEBAEBiw2ztwxT/iOVmX1vxHpec4w4I 9a8WQ+NddpeNgU2nt/JiIyA79VHO0ticIjFdC3xnc0t7LS7yPa4+j6ogGgDEoyRE WmygkpUi9AZ6z8unUemnu5M7AzdXU+CotR+p1d5LQbo7NLz+uJIo/P+4n4Obt56I D7heLtJ2xktI+qjzCoK2O47bD9AAqJXzd8b6/4KEmmBv/7pYPAMv/Qx0cnyjAD/0 G0xjByUmxKo1AZNk/0ggy/vLrZ4MU/gSSBYVf2ukw2GPHbg3LL9FkjmpQ01D/UOr iwjypbZ/ZAzP532U9tibQCzsrYGHVf5vLHm5HBSFHnL8LiuCTpQUNsMe6Wk= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAsIHAXbHNnlUC7snaSSDC Hhy/hYX1N53toycXBKL0KBnwBXApnVcc1Vgl33OeUWes19ABtEUJ4FCPWPrR7eQ0 kP6mnzDjQXOvAlD0gQDANELEDkJUxQ9J7Ib6Jz44g2eZHtcjXG0L2sNvgjN4G+gO ij+1iOHlvttOy9xOVR53/k0bsmPJ6F5z0bJjhc2Q2ChVPbblJcBZVZ8RQHo32BWU Rn+nXjJ5JnqkKjiQSjlzksJ8w/8w4zepfkGiS8FsBlUpBXBlkx7P0/ahTAtCxMXH dKeUGeyDeAAGu3OYwpt3bdm8HgLj8CVFgImodaiWPiGOiwOFeuKgES+BvGqTgR6X fksE1zJ7UpjjZSG+ir6QjvBjVw3FW2ccaEpEpimhE9MKxe4XrpCMMjbOUAY9xOzv nia1wJz95uC/LrihiYqgpA98FNuz58Keq5ixHPs9hywNXUIOASzRJSixnTY8hSPI 5WQpXgo08K7WuAejFjea6ObGVe2RxkBHzaCBcrB3aT4OCDdPrxNq73rOxR3NVT1d 6zqU7E6WFUF8KtL71HxYKeBVVRss/FBrBEPPUe5tN4CgTcSK05oEtebxaiYJkxUF e7H55nMWy2dq3QemgKpxjImZtqwd6NSHeHSNnUIXe6iWtu2oS9FLvhjU7/g3Gzsd ozhJRhdmwbc+yqggONNJBjMCAwEAAQ== -----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 266058667823085361121827848622068299170075 . . . . . . . . [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 2019-08-16 22:24:19 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-14 22:24:19 +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 720085088980726282363979730830412926601785076035552915235364355303023704758241584053750007361677963051220479315992525346218078603870106695030263091942947890082584063566623251891100055401206591967165931207895677177906387210790200583292756725959990787961331472446252602754050849934143484958710500153975555007433843029322872594941083508277449496056419961214282561711694815882932700945782232212150941167393652889541222511078148003359226642642036568868114772846524388712116546735936489249946051227930274782899729294882292448383220042852583493727076369987586591068228669655802918961602812618364298852337281356426204174987803256312923123479768259315846177772160308396103016309155423024352631944819677194570274695714198374332530843532142643284975367098046190206842228634423281673855263982911977813125654016435314714070404255038969533772125053766611048291552006505410200448314739241943577763938312000768311919960971991062433163432391044112222429707706387457532848151735377812014169092668579878527813650963847795705382271642776189109751737760000861464811703236188703920530426209840059086890150492252748774351224081491673699941893274737936150480101210683841698960819497630636154758480663060912799874891612314369375474885498842959509679617148467 . . . . . . . . . . . . . . . . . . . . [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) f13012dde40c0fa0bcd3d6c9ab0f5415dd051f0f . . . . . . . . . . . . . . . . [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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016c9cbf055d000004030046304402201c3928aea7e39ce22e75bfe8bbc6c1b0ed973a04903654eb3f3a1f0138f950900220158b5f9a5de07aa1a652d3d7e88bc7614480e9e277db5d746cceb3e8ce537fa300770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016c9cbf0387000004030048304602210089fe03652a379558ee736b3029edd9a5f70244bf750767d3b71537f27372ecc4022100af411be269d1b8573682eb2ea1ef8cd80f1077f11a345e72f64be1bb6a928e3a . . . . [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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