www.oscotech.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:e4:db:3a:ae:d4:ed:35:96:06:4b:6d:8b:ba:ca:4f:31:f8 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.oscotech.co.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:e4:db:3a:ae:d4:ed:35:96:06:4b:6d:8b:ba:ca:4f:31:f8
Serial Number (int): 426324929015318702069595276761698084532728
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 1c:69:4d:23:54:c4:fc:51:15:df:7e:35:09:a8:e0:a5:5d:9d:14:8e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 84:a5:36:07:ef:06:78:f1:56:7b:ec:14:ef:12:af:e7:12:2e:71:05
Fingerprint (sha256): 76:9f:15:31:c6:b9:a5:a5:94:2a:28:96:ba:28:c8:6f:26:9b:4c:44:88:4b:e8:75:73:56:d1:f1:bc:55:67:15

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 www.oscotech.co.uk

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.oscotech.co.uk

Public Key Algorithm

RSA

Key Size

4096

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

oscotech.co.uk
www.oscotech.co.uk

Other certificates including the domain name oscotech.co.uk

(limited to 100 certificates)

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 426324929015318702069595276761698084532728
 . . . . . . . . [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 2018-02-05 07:19:05 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-05-06 07:19:05 +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.oscotech.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 607357745545884759772147870489381989074945331126675802759681611441453795825714100337116152899988794469767630846179704913834779668770884359102602638815107323287141660153417875418385144801707831614797105428616731684529160487505191897675134209528038899872592717660275234500339999806183309909551029031304812491170048720598304850926899039154254944894639099948580643444280086028356363485211116007715279366452630156196395722008803066184526018916916616282844234921318622667648284260657498189498867494535416542257219919550085858686826948293225494263459676438971133193598152393491705396940641496075337219800406857767117517235148894840321369206986869551455752266589312485219537112849166017338579141320965324230644749395229514439318965747331489659445788929674467477554723728941425291416818908153181483677113332669626258899263683075337570707924359626109370545629113342387426193103417190255238487164427860717901771888262623863900106512275157145978616103981328088120880820005606765697207123558560478925252308695534501758673728839963021507022750945521155967480213979662358285819092991350553752119613370375543284558860182940723247711098435887035550315954603271427036885991500346798355028915305071524499406497883852613904452056370024024860252606408677
 . . . . . . . . . . . . . . . . . . . . [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)
							1c694d2354c4fc5115df7e3509a8e0a55d9d148e
 . . . . . . . . . . . . . . . . [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 (38 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'oscotech.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.oscotech.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 (246 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 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . [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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