www.oscotech.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:29:bb:6d:d6:c8:77:6a:57:75:b6:ae:d8:8b:23:6b:0b:89 was issued on by Let's Encrypt.

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): 03:29:bb:6d:d6:c8:77:6a:57:75:b6:ae:d8:8b:23:6b:0b:89
Serial Number (int): 275537570790926821465947853377100233509769
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 30:72:fc:e8:f9:cf:a8:a6:7c:38:b5:02:a1:a4:b5:47:6c:f6:a6:c3
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 92:2b:17:46:e2:e5:54:63:90:98:83:bd:e4:65:bd:52:7d:06:86:31
Fingerprint (sha256): 00:0c:31:8e:5b:0d:cb:5b:45:71:4f:c0:60:d9:52:92:21:ec:4a:9c:45:f2:b0:e6:81:3d:a7:0f:38:b8:bd:20

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

1

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

www.oscotech.co.uk

Other certificates including the domain name oscotech.co.uk

(limited to 100 certificates)
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk
www.oscotech.co.uk

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 275537570790926821465947853377100233509769
 . . . . . . . . [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 2017-08-09 07:21:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-11-07 07:21:00 +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 894610845158691761573240883391981065621526238718815882399658481686655073019062737117374488469993830602604490580991257179318754470116951874908679791322975518893299542181657704582783568179318703844376142137865008892877785657170375792143696228349484848813425637079391981896886784275405108062077962273343955354865725295678414781776922741712497256654886528446411128167223009160008008183989490291858109857139640794856935795885973088623193192426174629876167380224753250191689762547800356609363238129318968352214180318175411488246843683764902291858000690553784189932870110687062882399617313625444367056262640552035309110026053340473145371555755549472945459484975218329979283926209188473478923997925361063381080818271993343150330336152477175050123181822029966905225888064138316021043319015346829936349693353792286254795514631948977872921975775170312299613147720537918546186329316016378516947648953581463980240885089771678268685394812496595614577844989022940656719297303012578691285589139608033263947901280240598528320219737993085264313169695589096878496159420948375235410842566873014915944564742963432892624590412101611226219710188470148619667263588170710383640239648707771274388764209283961621956876128514695000963776359357018640590460944701
 . . . . . . . . . . . . . . . . . . . . [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)
							3072fce8f9cfa8a67c38b502a1a4b5476cf6a6c3
 . . . . . . . . . . . . . . . . [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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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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