www.selby.ac.uk

Issued by R3

About this certificate

This digital certificate with serial number 03:51:bb:cc:ba:51:3c:1f:ba:15:7b:3c:f7:4d:e4:f0:66:86 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=www.selby.ac.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:51:bb:cc:ba:51:3c:1f:ba:15:7b:3c:f7:4d:e4:f0:66:86
Serial Number (int): 289149358158611950752386500491769602401926
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: fd:94:dd:cd:14:ce:3a:e0:88:fd:4e:e1:09:62:eb:16:99:a6:bc:ec
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): b3:7a:8a:68:d5:b8:4b:4c:65:6e:19:aa:c4:9b:f9:67:3b:7c:ed:a8
Fingerprint (sha256): d4:a1:05:81:4b:5e:a8:57:43:91:2a:ec:35:76:e9:e1:43:c2:a5:e5:c1:8f:cf:ef:78:cb:92:d5:60:ac:28:26

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

Other certificates including the domain name selby.ac.uk

(limited to 100 certificates)
moodle2.selby.ac.uk
moodle2.selby.ac.uk
moodle2.selby.ac.uk
moodle2.selby.ac.uk
moodle2.selby.ac.uk
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
etracker.selby.ac.uk
selby.ac.uk
mail.selby.ac.uk
moodle2.selby.ac.uk
etracker.selby.ac.uk
selbycp.selby.ac.uk
selbycp.selby.ac.uk
selby.ac.uk
moodle2.selby.ac.uk
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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4MRuu9M3jSzUD9e+YARW
quzJ6VpFKtIZBiud26rXbdvZSFx5nqxVDF+07ownF/tXQ6cpcQIr1HBOdfZjMbwI
Axa3siiv0j1jWqRs6NUiw8DJu0c7+kyRT+k76022jxG2suIs1lQqGuNPuQGMqy12
LLnW6eqiViWCC5XL5NRG1VXQcnrgcfFWmYcggBwwJEfhVNk95c3R5DVjOjve6ApD
qW4aInlM5psSb8qGt4edA7b30nYo58yzQcRxO9gNzhDScVNWchl/6yQUk1Y/8ywd
NSnZn1sCkdZtOmrid++hKvDedFDfKv2dLUbU/j5eskFEkW4SAPtl6pRcIAfWULSl
wwIDAQAB
-----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 289149358158611950752386500491769602401926
 . . . . . . . . [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 2024-02-15 14:48:40 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-15 14:48:39 +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 28374244814709073819188933709597395149810910707031801951745658136995022721974238034061330366831758674916066983208627685842112456810867868948545650387630303446465386917517341640383263004879871973280898705687916412922512941430003323510747783551067069275704853047114677142719981893798268145716523076564385244956553929066325559375533155326907489343005705202390949422417268309369363095838402235925282782670886120738147786480301488719651101212044018985198538701270362920600294813172402873645302960635978281853395800986847829817635320608935160553984542089717860834660538128319778001119491782223543132482083608597866671809987
 . . . . . . . . . . . . . . . . . . . . [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)
							fd94ddcd14ce3ae088fd4ee10962eb1699a6bcec
 . . . . . . . . . . . . . . . . [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 (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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f000760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018dad74a961000004030047304502201fb6ffad93bea568cc9ff290e53965707f5bd75b3a42ea862633f7b3c2e454ba022100f6e45fe9677f53f2c24c30226d0772eb0e2f5d4eb7ca4653d9b72cc28d2e91450076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018dad74a979000004030047304502205ca469e44a6f3e048cd2d274f54f314bfb7be1e4ed95c0e6c2281434cd072f2102210080bf1e613b51cbda322c1276333d6ce023b2619b3d079648605b6e260301515d
 . . . . [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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