api.readmybook.app

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:ea:e6:59:72:02:02:25:a0:5d:9c:ba:89:20:8f:14:a6:37 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=api.readmybook.app

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:ea:e6:59:72:02:02:25:a0:5d:9c:ba:89:20:8f:14:a6:37
Serial Number (int): 341269118520585096239627574869046915802679
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 30:31:62:43:82:64:43:6a:11:39:64:c1:3d:2e:f2:ad:fb:77:aa:3c
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): f0:e6:a0:dc:fc:23:3f:97:de:c0:f5:17:e5:73:01:d0:a8:ff:bd:3f
Fingerprint (sha256): 34:b1:87:cf:f8:84:92:5f:c8:0d:8a:b0:74:ad:43:55:4d:a3:4c:eb:d3:37:ca:b9:0f:fb:4f:4d:6c:a8:ed:69

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 api.readmybook.app

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for api.readmybook.app

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

api.readmybook.app

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Certificate

The complete raw certificate details for api.readmybook.app in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAw4S73qjAx/6bxBcarQcY
B5rL5sBc1T9C7htmUsZNX3uAYze8U0+5EtkmO1MO54y5gJhQKTpBFPQRbu/LDQIY
OZhSUG/H84uqDs3Rmgm1iYF5ytVFer3hWfavpVfDkY+tiV5YDR4ThpYf6ctnXHDD
zVE7RTNbBGpKi+i3dVtpUHfRiSQgE6DLWVI9Liib1wVVQx03mOJuJSiigo4t30sN
grldGIwa2bP4C0fdfyFiwoIG0WidBqbyf6clK4aniaeJxjv3xjS57Qih/l9LJYUV
9xwhr2HolFoNu+G2LUlHGs/uk/taiphyN5T1YHt+yT7tv/m/6CUq0E4LbvoRGcF4
0QIDAQAB
-----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 341269118520585096239627574869046915802679
 . . . . . . . . [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 2019-02-17 20:43:28 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-18 20:43:28 +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 'api.readmybook.app'
 . . . . . . . . [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 24681922977319744494958980342153125681559243033929142614395345113056260087592940831035150967175433352014405178177663982730716178718897951334322727406317850911387046923189410303066972225184159088776268394954323463655793802464741021101456383657079816289256713073008468784614524909215360953423174600521548864318097015036088268853518707892936467133758736765200835340744453741993648004509473158415339306531278497367698178398769393310131617848831831114263746891146291476981693531235777739133731172504442863496776570500167067960150040161400734188659012233163588973807078291374085607807235467047317619900504965987268816894161
 . . . . . . . . . . . . . . . . . . . . [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)
							303162438264436a113964c13d2ef2adfb77aa3c
 . . . . . . . . . . . . . . . . [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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'api.readmybook.app'
 . . . . . . . . . . . . . . . . [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)
							00f0007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc5600000168fd69ffb50000040300483046022100b8b3cd8c72a07d47472bf58740fe4ae9ae3bb8d0c0e093ed96d876b76019d6a6022100ed5bcf5a1bbdffd66fb6715e138087d396cfd063a45f064cc9312caa76849fd100750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d00000168fd69fff9000004030046304402202bf321be6246be0f02712f724b11c3d741e20bbf99b2631b95ee5c7bf4e9d41c02200c3a818b446bf21cf0d2e511871091d7df9bba3891e76e87fb905050b653ab23
 . . . . [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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