blog.nannycherie.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:8c:75:bb:a4:f0:b4:b1:f2:a7:f3:8c:0e:7b:ad:c2:84:c3 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=blog.nannycherie.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:8c:75:bb:a4:f0:b4:b1:f2:a7:f3:8c:0e:7b:ad:c2:84:c3
Serial Number (int): 309132883144617362424486573160981994833091
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 1f:71:0e:86:56:6f:5b:6a:66:54:86:92:f7:8f:7a:e4:85:f4:d4:ed
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 2c:e7:d3:0f:d2:af:8a:05:c6:76:19:8c:b2:6b:c7:bd:c2:8a:71:f3
Fingerprint (sha256): 12:13:e4:d4:2f:cf:11:a1:36:57:f2:f4:c8:33:5d:d9:3d:b8:a2:28:78:6d:fd:08:3d:53:a4:93:ea:9a:f0:53

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 blog.nannycherie.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for blog.nannycherie.com

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

blog.nannycherie.com

Other certificates including the domain name nannycherie.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for blog.nannycherie.com in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----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 309132883144617362424486573160981994833091
 . . . . . . . . [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 2019-06-23 10:45:33 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-21 10:45:33 +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 'blog.nannycherie.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 963015915732630439622729715628711143859200560401250894936414561523862791903496326863489752622095306299426537454598335801606061540172970184036232394296250407048296626269397282427002901102230120710361116868795870884958974436139475041183274215846539453130377239767708484263183355551847138024845868517699117497963287269546015987379396578756181131803249426494430370051684092239368985768198863330925972007210241928314615682784049494364444171312983279350235091299393266288976836081756200840132346247353355577077924397149319588575858100118078414823871031949754976683280509226627464726795911023434396411901924666354762894723604777228185448160943003880605889794368022867111646404542922510789433952039269860356983586438529009483082161071048225301061964091886761961817582405331390819412649089718563862076925269769015918053795994652524541708478395213133541485766821360805644748294067662647644460866671936364688157370098272731076063443115003755237729048682760482175349922569809385930110963602282093728374843109927160545642384529162058124285678881810746419592634059825547140606470488194529655953451336264035093499004449941722473481664253205182062511953265257374224692991528659195519606789552808057929861699837163661204878025823907501544685074854591
 . . . . . . . . . . . . . . . . . . . . [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)
							1f710e86566f5b6a66548692f78f7ae485f4d4ed
 . . . . . . . . . . . . . . . . [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 (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'blog.nannycherie.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)
							00f1007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016b8427e07900000403004830460221009edd7a40fb20a7fff5417b0afa3018cca6b43d47473da4e2e05f294d9c1c4cc1022100f4c6fa5df8878d4bbe58a1c7a2c21cc4f04e7157c26804d6a590ebf11a320a7800760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016b8427de730000040300473045022100a49e55d1da63c7ef482cd884e1d6b84f759b0c5c6ee5a78cf953e70b63fa5b1202203512e60aa0626789cd1a9ddfdfe00834aedc3b58a7882849e65ed0eb397f436c
 . . . . [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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