lucidbooks.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:84:4d:af:fd:cc:ee:7f:6c:1d:6d:e1:69:ac:c0:56:69:53 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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=lucidbooks.co.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:84:4d:af:fd:cc:ee:7f:6c:1d:6d:e1:69:ac:c0:56:69:53
Serial Number (int): 393469680515916532233967198937492315597139
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: d2:94:58:17:46:29:0b:c5:e8:35:bf:1a:13:25:c6:95:b1:5d:fa:58
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 43:57:2b:8c:77:9f:8d:ea:21:60:ec:54:76:28:0e:5f:6f:66:59:9c
Fingerprint (sha256): bf:f4:83:21:39:16:84:4a:01:53:55:39:9a:e7:76:1e:f4:c4:09:0a:e3:bd:b3:85:a8:3b:7f:1b:4a:23:49:2e

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 lucidbooks.co.uk

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for lucidbooks.co.uk

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

lucidbooks.co.uk
www.lucidbooks.co.uk

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lucidbooks.co.uk

Certificate

The complete raw certificate details for lucidbooks.co.uk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx28VlS840KQyCFcqL0MP
q2VYdO5913X9YXXoBOAkA7Qld0OCg6vKq5pdzw8xYvqrpWP/fB2zv4Pj/ZwkOpsW
9oponGiEy/XzP1Ysd4w3bmeoOuQzKiLm2D8xhYW429GiPHoSWFhIXLG+WQav+LLZ
xmUqHjOx3p6xYejF12Xt2KOp7X6lLnLf0HjQ0+Ng4lTAxETqC9tagekLvPzqEhSz
yING/HWiDsY5mIEAAn+cBkTlT57lTg+cElC4EM4BmRO5SU99J19Xjh7YidC9dBXE
cifPj7sX2SS6NGW5ZCMwcfJ7WLve2+hcp0/KzPJVXjkEHpPImvZcqiVTnNcaWpDt
CwIDAQAB
-----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 393469680515916532233967198937492315597139
 . . . . . . . . [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 2020-01-13 15:16:07 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-12 15:16:07 +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 'lucidbooks.co.uk'
 . . . . . . . . [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 25176200401928514905069494523991487110204775072764813520365721984560492855827593971078502115060605482039380100426357902674641944181832180596928681411097973724447888505114945943122143004059839707991971274571277396977937538697880720539814248374275887731803623547226442651617199721440493837800102257553530587696390253894680662612486063437945996402009970714512900061626281887855576952800659478699184352335823995756228787253855631312088688023646585037808254788026679107696976976731108723969018300572398055998331395479539079760030374561805150269070089413447098192803824298521115714147742812361879399911621173894083081465099
 . . . . . . . . . . . . . . . . . . . . [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)
							d294581746290bc5e835bf1a1325c695b15dfa58
 . . . . . . . . . . . . . . . . [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 (42 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'lucidbooks.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.lucidbooks.co.uk'
 . . . . . . . . . . . . . . . . [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)
							00f0007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016f9fb0e3b2000004030047304502202fd3c1a919ac605cbc33624b4340cf959d827532cd3089b91f825f3d084563a2022100fb838edc6d7073a46b97cd6195d647c438f0ddd3aadf9741e8f19dbd70a6c55a0076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016f9fb0e3e6000004030047304502210084960cf5c06310b02549583f7acd17ba6a09a39bd4fdcecdbd83b2c01d1df43202201e6c637fbb8b84fc3aaeb1c807cca0021741c04d741a6a604c99270de3f0347d
 . . . . [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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