www.selby.ac.uk

Issued by R3

About this certificate

This digital certificate with serial number 04:e3:50:f5:0a:6e:6f:6c:ee:ed:6c:85:dc:9b:70:b8:38:17 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:e3:50:f5:0a:6e:6f:6c:ee:ed:6c:85:dc:9b:70:b8:38:17
Serial Number (int): 425800851582060830536750318658239677872151
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: a5:28:1a:26:4d:bd:2d:c3:6f:55:cb:a9:30:74:a8:60:d3:31:c9:9f
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 91:2e:b3:f5:16:72:2b:f5:51:ab:a2:c8:a9:e3:95:70:70:e5:42:8a
Fingerprint (sha256): 37:ee:aa:91:1f:bc:1d:93:3b:eb:97:ef:38:cb:0a:ed:08:34:b1:83:0a:4c:6d:d5:d2:09:1d:44:f9:c9:42:b1

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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(limited to 100 certificates)
moodle2.selby.ac.uk
moodle2.selby.ac.uk
moodle2.selby.ac.uk
moodle2.selby.ac.uk
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selby.ac.uk
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
www.selby.ac.uk
remote2.selby.ac.uk
www.selby.ac.uk
www.selby.ac.uk
moodle2.selby.ac.uk
www.selby.ac.uk
selby.ac.uk
selby.ac.uk
etracker.selby.ac.uk
moodle2.selby.ac.uk
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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAiK/7a1dYl/UzQp7I1ywu
s2TKcvrwbiZ/iDqNaVY7BYyLGv3CB8Wt5j+j3O9fIogmj5MAdPxirav5Ae5ug5FT
i8qhi1gp2STnkAv2v+QC1emOj8uAkzszVFqzrS2Uf6GWlhWXndTZmOWvRfPG/9Ly
6cg+FifMnGy8w/k1btmDkhb/swSx8IkXei1CGdlNxXf3gx3wX/BJnIbDB6tKvhk/
RIo7DDYbqUveX3AezSs8y2bROtiij2ZWgny2IO+wGow5JQ71Q0Jo0J0anodm3j0l
FJtgI83LS8H2jJZRVxyEK4DRsyWJH/YhWxJYGP478oRkGQJuWQ50hWQb+xwP1wNz
uwIDAQAB
-----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 425800851582060830536750318658239677872151
 . . . . . . . . [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 2023-02-06 18:51:14 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-05-07 18:51:13 +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 17255189486506748620894611815028556549521479547349115701849899191611275974722952763960156963252975530288502383270330998131470009067582476278950318923555370892818902776975606786304007593138847678078683790674482227903623061278272115290766657270847198302478594724070346969218091218008135633846317875249975865531496832987340565665600712004029524251466850291170140185223818735002888518289075989306389823137482882916616076248805727777657888759672288990847177368988650912393975289510841708261023627995321886060663893223373865339481958810630665927222692750191964402598374497421225175800993812851880633990404372336338704495547
 . . . . . . . . . . . . . . . . . . . . [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)
							a5281a264dbd2dc36f55cba93074a860d331c99f
 . . . . . . . . . . . . . . . . [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)
							00ef007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018628485421000004030047304502200b03c61de886daeda267576f5fef65be1d2e0a4cd56450b62ea17f9a3e08d940022100a7b1514eed206e37f2304fe1e57ef5cf1e8515b360b383d6891bbf50dae023b9007500adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a0000018628485447000004030046304402201d1c6d2953b1da64891bdcb72bf4e9e38c5f6554910e74bd25552d24e28eadd1022008b9e581bd536339d500283aee985aab3055212729dd90f07ae17f6b0e5bd256
 . . . . [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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