zajac.boston

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:44:f9:33:1b:da:ed:a7:07:48:30:d4:1e:8d:70:1d:0c:16 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=zajac.boston

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:44:f9:33:1b:da:ed:a7:07:48:30:d4:1e:8d:70:1d:0c:16
Serial Number (int): 284807301888965133382975785716805443324950
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 95:5d:7f:e6:52:77:50:e1:cb:b5:28:ea:58:b9:9c:fd:01:d3:b4:f2
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 68:01:31:17:ed:1e:dd:37:57:24:e8:6b:b8:9c:89:ce:4e:d5:61:73
Fingerprint (sha256): 4a:6c:3e:f2:9a:6c:b3:7b:a4:a4:e5:37:20:f8:fc:cc:9c:74:4c:bb:9c:f0:7f:08:8c:2e:e6:d1:f8:63:dc:1a

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate zajac.boston

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for 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

zajac.boston

Other certificates including the domain name zajac.boston

(limited to 100 certificates)

Certificate

The complete raw certificate details for zajac.boston in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIGUTCCBTmgAwIBAgISA0T5Mxva7acHSDDUHo1wHQwWMA0GCSqGSIb3DQEBCwUA
MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD
ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA4MzAxMTI5MDNaFw0x
OTExMjgxMTI5MDNaMBcxFTATBgNVBAMTDHphamFjLmJvc3RvbjCCAiIwDQYJKoZI
hvcNAQEBBQADggIPADCCAgoCggIBAMxIHHj10/uFDNMfpdgNbJ6T3gJBFBaBEQsk
g2XXgUdtRPRb0Vn+RRBIh6S1YG2pBfR85lCnmvKmp1xKNxZidiORUjMszWcfM6IQ
bVfOsa6Cv3NzFnx7zy77HjEAuBR0/4rPofNqFTzdgpX3bBdy5rhV0o384RKI6TuW
U9zPAHUIm7hw+YtOJNyrofVSQ7MhscG0d7YdS/AU/3wChW8kKrruuDwWTDLnFi3b
AQ45oGMOhxAocSRzvNFWsZvaD4xiHAxdmsIRlmC34PacVDXDpmLPupKwYM9aOyY9
Y6Dw95luk578TNg2h9rzWAvSv10PtHfPl2iiJV99QxyDJb64ajZ30Tt0Y5DzgB86
50lAstVO+4jskPc+wHPjk2NBLF6wEsa8yXytmqsZHsmgmnE3BOCY9/hurB8o7G6s
0p8v1nvWG7aM20SDSAtAL/oUVbc/ymUj3yMVulYhpAdW/E5qqiuezdMSOF383wqt
0ELO0gEQL9xOJZ1H9NppCcrpy9cykr6XTSwe2h8LfJTnsUP/jzA32YOv/ttpY2LC
Cj7adAc3+DmeVqszXGRc+BCf6oKB3xSWx6o7sQ9r/vycwIV6zi++IGXbHzQWVKuE
zaEkmIvVecrbY3Ha5gJGGirF1/6B09QHtgLPzOPy9N9wGDD/PQx8uJ0abZIHh+40
P2uMoV61AgMBAAGjggJiMIICXjAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYI
KwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFJVdf+ZS
d1Dhy7Uo6li5nP0B07TyMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyh
MG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgz
LmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgz
LmxldHNlbmNyeXB0Lm9yZy8wFwYDVR0RBBAwDoIMemFqYWMuYm9zdG9uMEwGA1Ud
IARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0
dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDx
AHcAb1N2rDHwMRnYmQCkURX/dxUcEdkCwQApBo2yCJo32RMAAAFs4oAg3AAABAMA
SDBGAiEAgVD998CMSuZ+wQO6LklLVkf6UqKLZ2LRcdpD+07LgasCIQCj5UMlw8Rt
3FK1SrOQqtfSbedkMhLB1Sq/FapFQLSxEAB2ACk8UZZUyDlluqpQ/FgH1Ldvv1h6
KXLcpMMM9OVFR/R4AAABbOKAINkAAAQDAEcwRQIgd2faNOVwVrYGEY0B0ug5erlY
1cyYII/gxSG8ZC6BhGYCIQCvkqrlSmK6H9l27uKcNg5ZJHy1GJDTT53H8HeTNi0N
5TANBgkqhkiG9w0BAQsFAAOCAQEAC2IK51UIC7bF/HAJy2Ih1Hl4Miodb1NMyz2P
v/3qLlICpswjwuUq2lLPo1sKfb/Ygh/u3Ylrzb0mLmJJDTJDzcLSDqbEtXX0JFiE
qrowqjMQGrXoNT31d1Z5UzrOelYAaUITu9fhEFD4TltXikRXi2UbumuLtRDU06Ng
vOF1DqukxBoHn8r1+DRkeVe6nWpHCdm0BCEU5GnpR3olSBOgNTQYSGUcEnQYRKvW
LACRPGUjU2YuaeJbMbOGiYVHehDF8wA23sffi91bWjWUd786hegzext3zZjClv93
RLXknw7N0Gjua0EzfvKSBAgk3I+pmG5SPv8hWQiKCXPb1FONVA==
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 284807301888965133382975785716805443324950
 . . . . . . . . [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 2019-08-30 11:29:03 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-28 11:29:03 +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 '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 833396562195620525326300388944105430659368716836887609308317107187378045542009434165162317243813788039152983652825798936168065354577928448266605545111716391973338803245715294794297253409155072993331935349985036752077047504634768192533864577646150621926698477579727899438863881244393075708867975560073166616248040174921481132727570011938861124027680934803183110314149787898427009324015947152819057849189281907410150494019154582860505469187483910304014152769161770793474680904284309941217088303500490574220716632371896037935578853253512802387020760153860889304320198833654530611994650618323599378131872789816106219319798592760139747532211027679445623435549024145031616681754434549864932443879674859459098256470053505940953983723181017851390711331100422439082654540893493604453044067247111773595390635080624807356334667426307119245989560536512678598806991224999018598325256780490417422485970836804269123068177726501811825387838588620642809796359445240130539779397247760067714714351362126493607297281081604212334744352872207553225694314226620047438106135252432862220385268583436033496416460776646739719830694558848284530129540597428194624651090929870219728684011973151360471538172406678320032780968001277447008703428890945044173868326581
 . . . . . . . . . . . . . . . . . . . . [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)
							955d7fe6527750e1cbb528ea58b99cfd01d3b4f2
 . . . . . . . . . . . . . . . . [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 (16 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '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)
							00f10077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016ce28020dc00000403004830460221008150fdf7c08c4ae67ec103ba2e494b5647fa52a28b6762d171da43fb4ecb81ab022100a3e54325c3c46ddc52b54ab390aad7d26de7643212c1d52abf15aa4540b4b110007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016ce28020d9000004030047304502207767da34e57056b606118d01d2e8397ab958d5cc98208fe0c521bc642e818466022100af92aae54a62ba1fd976eee29c360e59247cb51890d34f9dc7f07793362d0de5
 . . . . [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)
		000b620ae755080bb6c5fc7009cb6221d47978322a1d6f534ccb3d8fbffdea2e5202a6cc23c2e52ada52cfa35b0a7dbfd8821feedd896bcdbd262e62490d3243cdc2d20ea6c4b575f4245884aaba30aa33101ab5e8353df5775679533ace7a5600694213bbd7e11050f84e5b578a44578b651bba6b8bb510d4d3a360bce1750eaba4c41a079fcaf5f834647957ba9d6a4709d9b4042114e469e9477a254813a035341848651c12741844abd62c00913c652353662e69e25b31b3868985477a10c5f30036dec7df8bdd5b5a359477bf3a85e8337b1b77cd98c296ff7744b5e49f0ecdd068ee6b41337ef292040824dc8fa9986e523eff2159088a0973dbd4538d54