www.the-lean-startup.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:df:a3:d8:1f:d0:61:fb:ca:e3:04:53:42:89:aa:05:e0:fb 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.the-lean-startup.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:df:a3:d8:1f:d0:61:fb:ca:e3:04:53:42:89:aa:05:e0:fb
Serial Number (int): 337437611963348882062863230318684842352891
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 4b:4f:3e:17:e1:59:e7:b9:e2:be:ff:60:f8:e3:fe:7b:4e:83:69:e2
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): c9:e4:a9:66:d9:7e:8f:44:4d:e6:20:df:55:f2:dd:de:33:59:4c:9c
Fingerprint (sha256): a5:85:3a:82:45:fe:2c:29:90:ef:47:39:5c:7d:80:24:13:1f:5b:39:68:c3:82:9d:db:e1:2e:e4:fb:00:2c:02

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 www.the-lean-startup.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.the-lean-startup.com

Public Key Algorithm

RSA

Key Size

2048

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.the-lean-startup.com

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Certificate

The complete raw certificate details for www.the-lean-startup.com in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1XSV6xOl3j59H0rBPeC6
5O+15VVdBrNBM9nuTAvwGlaSFmm1JGGVnAEQjdAvPr8XOH5jvgC72KeruZMl/h4k
fT6aMCq9y9d3e1K1Jc78sFVIvtK27+b9F8pTy9K9DPJe3UbIq3U54oHnjewhzU4/
4Z0APDzFWbirqZqreIBHsnG/FVwArj5SxIGLftJfp+/Z/lkLGLGo1PVqffvKK7Lz
JmcnHi3ttFQ46ilkhqNaBCe9SepO4qsTPIoDlr/3zjGYiTRRgOkoUm4lG2yH/3QB
hY+cniYvmtej3FNB20KieYw3uB5zOkonQ8G3lWPshUmmy0+ACjouxQ6ukduSvN8h
aQIDAQAB
-----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 337437611963348882062863230318684842352891
 . . . . . . . . [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 2019-09-25 06:20:35 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-12-24 06:20:35 +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.the-lean-startup.com'
 . . . . . . . . [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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 26946249468823613336649473772553508070579707622099021404249668903063704381099546172113238745998001018611976074319245534082957794914680024631157712451514021319014898939264258422640164318949866632134297864545047536391511891042343452927711594295884981234044366556683239162784419913930736908668258796665970065979422110025841881742482589659657392525723330554267503837169140201866683767570302149748627262034426601786603263624171681628002833934542417513421735375609626441843093861508826603020482254580351611925790121371539400215148507124306173677811967822126732367193473615880055725884155934398120474739184485049951527575913
 . . . . . . . . . . . . . . . . . . . . [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)
							4b4f3e17e159e7b9e2beff60f8e3fe7b4e8369e2
 . . . . . . . . . . . . . . . . [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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.the-lean-startup.com'
 . . . . . . . . . . . . . . . . [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)
							00f1007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016d674b130c0000040300483046022100aa92b49a56fc988b19e6db17c0875ea50513681d41dbedd90f0e77444f8344bc02210091161e5e39bd0f59d5f1a72c718f70429733ec3ee601b0f40be5ed53fa02a79b007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016d674b113d0000040300473045022100d011bf4738e05566faace9be268083c288fcc7b47b1eb91953b57dad18978d0802203f86279be23f197dd3ecd9aac283a8a6e82cef91bfe32a656133211aa029971a
 . . . . [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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