selby.ac.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:43:d4:b8:62:1f:2f:a4:8f:89:9d:47:7c:82:4a:dc:0b:f8 was issued on by Let's Encrypt.

With 4 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=selby.ac.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:43:d4:b8:62:1f:2f:a4:8f:89:9d:47:7c:82:4a:dc:0b:f8
Serial Number (int): 284418530086858948498195914095619489926136
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 18:06:fd:91:5c:a3:b1:54:8a:67:95:ab:a9:f5:f7:97:e0:35:13:b3
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): e2:74:20:06:fa:60:f5:1a:fe:29:57:14:e7:17:12:63:80:ab:8a:30
Fingerprint (sha256): 8d:77:81:e7:c3:5d:01:fd:3d:f6:fa:98:79:4d:cc:b5:99:27:7f:bc:45:3e:6b:5a:be:9b:cb:88:2e:d6:27:d7

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 selby.ac.uk

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for 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

m.selby.ac.uk
selby.ac.uk
selbyeducationaltrust.uk
www.selby.ac.uk

Other certificates including the domain name selby.ac.uk

(limited to 100 certificates)

Certificate

The complete raw certificate details for 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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAp3FY0Wy7F/rdza1sQwe/
SBp+yVd4RGBaoI7w0QE1UX5a+syciI9pYrGHEwsHxWlaZjOcAmG7POOkJeeWNuLl
ytpg9IVZtEGnPcLPKKELNrabSrx4C5q9apwe/JORnzQT1sANydFdM6dD6kLOqZxA
ZqpM56GJeRmKYxFZ+HMpBaLyWJIGonAzxvYtZlblWkufUqhOB8Q7GZqL1zhYDrYF
5lhVqRXnW1osdiZBsVsIrlq/PbAupAuwlRnV+GnI86pWNyRoLX5u+LGNTXdwtKR7
oud/lXsaIMo2ABwgpz9za4KzKOnOnZxU50OqTY3GSXpvHZ5xMapWIsqGdZ9E2/uS
4wIDAQAB
-----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 284418530086858948498195914095619489926136
 . . . . . . . . [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 2018-12-10 13:30:58 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-03-10 13:30:58 +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 '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 21137690391369119056261111983951885428069417646322048391166763289311985543664874886397344976568409475613848625107309439012853274464768549143066053654230563825346794508156053652065403358562188675899113358310736858412305060099665019754673942158805238678977513020673376256487922701048237709285496790204062163837608521006465683150144431601561918709413165209771520108653224177695461424267172962624823161182297232574614991676874531491997818574403475416282981530303948950722152948545015921577960941213664333414299117969839754143013782269081051543242126616960890244605951374169875240249923602903297872663844173634275464942307
 . . . . . . . . . . . . . . . . . . . . [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)
							1806fd915ca3b1548a6795aba9f5f797e03513b3
 . . . . . . . . . . . . . . . . [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 (73 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'm.selby.ac.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'selby.ac.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'selbyeducationaltrust.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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016798873b1c0000040300463044022054336e54582305c0c054fb27cb29f172f0915da71bc8e59b11e4339b6762575902202793f4a789bbcb51404f399b70ad3c50a1676af8e5a7bccc77e860f50b9cc300007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016798873b670000040300463044022078ce4118c15a0305fca94e8f6b6a0299cfdd8cbb3a9cb0d3fe3c1072a621e97d02202ca34bbe209e248b2d69ebcd5140ce4eeb08242191cd2d82d0c5e1fb228739a8
 . . . . [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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