lucidbooks.co.uk

Issued by R3

About this certificate

This digital certificate with serial number 04:92:f2:c6:42:91:f4:d7:30:8a:7f:0c:d6:2a:13:1f:cf:a9 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): 04:92:f2:c6:42:91:f4:d7:30:8a:7f:0c:d6:2a:13:1f:cf:a9
Serial Number (int): 398453071897458833685516060103187326029737
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: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): bc:f1:d2:26:60:55:84:f2:3e:43:4a:c4:95:87:21:8c:99:18:7e:6f
Fingerprint (sha256): db:fd:dd:bf:ad:16:d9:fc:4d:3d:10:53:ff:f2:c4:95:36:86:4d:e8:64:24:db:e1:fe:a9:17:de:5c:c0:d4:4f

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.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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Certificate

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

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFAjCCA+qgAwIBAgISBJLyxkKR9Ncwin8M1ioTH8+pMA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzA4MDIwMzIwNTNaFw0yMzEwMzEwMzIwNTJaMBsxGTAXBgNVBAMT
EGx1Y2lkYm9va3MuY28udWswggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIB
AQDHbxWVLzjQpDIIVyovQw+rZVh07n3Xdf1hdegE4CQDtCV3Q4KDq8qrml3PDzFi
+qulY/98HbO/g+P9nCQ6mxb2imicaITL9fM/Vix3jDduZ6g65DMqIubYPzGFhbjb
0aI8ehJYWEhcsb5ZBq/4stnGZSoeM7HenrFh6MXXZe3Yo6ntfqUuct/QeNDT42Di
VMDEROoL21qB6Qu8/OoSFLPIg0b8daIOxjmYgQACf5wGROVPnuVOD5wSULgQzgGZ
E7lJT30nX1eOHtiJ0L10FcRyJ8+PuxfZJLo0ZblkIzBx8ntYu97b6FynT8rM8lVe
OQQek8ia9lyqJVOc1xpakO0LAgMBAAGjggInMIICIzAOBgNVHQ8BAf8EBAMCBaAw
HQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYD
VR0OBBYEFNKUWBdGKQvF6DW/GhMlxpWxXfpYMB8GA1UdIwQYMBaAFBQusxe3WFbL
rlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcwAYYVaHR0cDov
L3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMuaS5sZW5jci5v
cmcvMDEGA1UdEQQqMCiCEGx1Y2lkYm9va3MuY28udWuCFHd3dy5sdWNpZGJvb2tz
LmNvLnVrMBMGA1UdIAQMMAowCAYGZ4EMAQIBMIIBAwYKKwYBBAHWeQIEAgSB9ASB
8QDvAHYAejKMVNi3LbYg6jjgUh7phBZwMhOFTTvSK8E6V6NS61IAAAGJtHowWAAA
BAMARzBFAiEAth7N+7PV9y5NMpJ2AWXM4PBv8bBlRd8n3JywegoZxMACIFeEPvcI
PcyaPExZIXR8Q/KLOQ/Borb7tMxHMOFHjGKuAHUAtz77JN+cTbp18jnFulj0bF38
Qs96nzXEnh0JgSXttJkAAAGJtHowYgAABAMARjBEAiB+Xa2M82yEwUOEV5ouwgy1
/3aS2y3mt0aiHBEdjfkwWgIgDiOIna+iFIQTSQMNLQimtxqEWFBhP0o1U1WGx1dA
kkcwDQYJKoZIhvcNAQELBQADggEBACOpHFj2INIVOiVz223WRwHF6Hj1sq6Nequ2
hbZ8cy/wFz5gPhuUWqOz/OG0/O2gkZul5iaLDMe2m+xJu70p8Hm3ZsgJL9jtG08J
dtCMWft/HJzJ7hCc0CDOjFLQHp7qMsiwJK4vdS7jALfb2IU+CUPhDZ7RRieZKXZw
g/7QQAK/RHl2xZ+lnhUTeqWYg6hKrn3SRhxic/mie66qpmAyqLfi5nAuijRTWyq8
Rw7vGQ7z+LwQnYEcDnTu6cYXKyx3tM3wSmDnsuKapWTJEvT53frEUNAc6fiP7HNd
0MuQDrJx2rG/gom9HoLCo0YQtWoLz9D0NX+PnGbQ+otPz+wRh+Q=
-----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 398453071897458833685516060103187326029737
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-08-02 03:20:53 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-31 03:20:52 +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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000189b47a30580000040300473045022100b61ecdfbb3d5f72e4d3292760165cce0f06ff1b06545df27dc9cb07a0a19c4c0022057843ef7083dcc9a3c4c5921747c43f28b390fc1a2b6fbb4cc4730e1478c62ae007500b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb49900000189b47a3062000004030046304402207e5dad8cf36c84c14384579a2ec20cb5ff7692db2de6b746a21c111d8df9305a02200e23889dafa214841349030d2d08a6b71a845850613f4a35535586c757409247
 . . . . [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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