www.selby.ac.uk

Issued by R3

About this certificate

This digital certificate with serial number 04:ff:cd:82:0c:55:c6:51:ab:90:fb:3d:4d:14:45:4c:d5:e1 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=www.selby.ac.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:ff:cd:82:0c:55:c6:51:ab:90:fb:3d:4d:14:45:4c:d5:e1
Serial Number (int): 435494314279792497873860744636650784347617
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 35:95:8b:e2:18:4c:f9:0f:24:8a:dd:e9:f1:c5:97:85:7b:11:77:a0
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 05:71:83:ef:44:b4:41:6b:44:d9:d4:59:36:a5:78:98:33:19:0e:6f
Fingerprint (sha256): 42:03:59:71:11:14:05:ab:f3:af:ed:f9:3c:1c:66:85:03:44:08:8e:15:5a:d6:6c:63:b8:4d:c3:5d:da:38:b2

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

Revocation information

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

Check the revocation status for certificate www.selby.ac.uk

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.selby.ac.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

selby.ac.uk
www.selby.ac.uk

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moodle2.selby.ac.uk
moodle2.selby.ac.uk
moodle2.selby.ac.uk
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moodle2.selby.ac.uk
remote2.selby.ac.uk
mail.selby.ac.uk
moodle2.selby.ac.uk
moodle.selby.ac.uk
remote2.selby.ac.uk
selby.ac.uk
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remote2.selby.ac.uk
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moodle2.selby.ac.uk
www.selby.ac.uk
selby.ac.uk
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selbycp.selby.ac.uk
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selby.ac.uk
selby.ac.uk
selby.ac.uk
www.selby.ac.uk
selby.ac.uk
selby.ac.uk
shibboleth.selby.ac.uk
moodle2.selby.ac.uk
selbycp.selby.ac.uk
selbycp.selby.ac.uk
selby.ac.uk
moodle2.selby.ac.uk
remote.selby.ac.uk
selby.ac.uk
www.selby.ac.uk
www.selby.ac.uk
selbycp.selby.ac.uk
selby.ac.uk
www.selby.ac.uk
selby.ac.uk
selbycp.selby.ac.uk
shibboleth.selby.ac.uk
shibboleth.selby.ac.uk
moodle2.selby.ac.uk
www.selby.ac.uk
www.selby.ac.uk
remote2.selby.ac.uk
shibboleth.selby.ac.uk
mail.selby.ac.uk
www.selby.ac.uk
remote2.selby.ac.uk
etracker.selby.ac.uk
selby.ac.uk
moodle2.selby.ac.uk
moodle2.selby.ac.uk

Certificate

The complete raw certificate details for www.selby.ac.uk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoFAntvAGL3rrRRdRyise
fjad+souVzDKUjWD1Qay7yeWx81LuyiaSPg1kZV4pbjfJzbxtTuc2CCCOKhqHE/s
ZUDUiM8kXWnQQBS5eNnCLY/VHkVcu879bzTCjg1bovXwckp+qemeONNM0MQ3M+sU
jEis/jNTxOx08GHqv/n5MxAlzuNVzzn/lDBrb2BflbZ0L8+GNhW330vzbuETZzQy
/rJSqJ9pXnHVOvf1kCtznRVLubmmqUkfRBlu2qQlmQzHDJbeR1d1OiGDREWXZg/D
oHETnRutClOF41dm+luPJslGMBaF/0EZ1d7Vgs7HG9gyL7QTZCaBC+oa9aF1ICFS
mwIDAQAB
-----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 435494314279792497873860744636650784347617
 . . . . . . . . [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 2023-04-07 21:29:36 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-07-06 21:29:35 +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.selby.ac.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 20237654764867971415630055199965023712046565413880601942308971992280628337536994622165606450597277041792174229150687468785623545880784581407519664380298813250392533893463501976781167675012435955999823190033652907888031388981804737236704959873762734023244535518700267432270151375626631250399091797324601542293541320481844740283265394726278952606493787144513422900541863984664137550133825813997683463632337425203999814022317763324229767621232748319887461206399429724915691055691884800561896374953769158903225270360150222700729586303329451409935877480545779187030560144235457094340801488771802109427292149574146273137307
 . . . . . . . . . . . . . . . . . . . . [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)
							35958be2184cf90f248adde9f1c597857b1177a0
 . . . . . . . . . . . . . . . . [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 (32 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'selby.ac.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.selby.ac.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007500b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb499000001875dd6e2fc000004030046304402200425506484b443aec79b4c7a4253dcec8893f4b79c05ebdbf9f88a2d8afaacdd0220194d0a013c24b365b81bbde0ba1644ecbcc40de36153d8ecc92652f9e0ced8e40076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb52000001875dd6e3120000040300473045022100e2930618b7542caa806564e1d672810a10e357b1071122330b1acb170f1c4efd0220445f34bb84e57e74cbbde63e608447f39dfc7606b924f53ca2803dbc66d9f3a7
 . . . . [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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