www.oscotech.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:dd:87:94:b2:1e:fa:56:58:9e:ab:8b:1b:01:db:07:e5:fe 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:dd:87:94:b2:1e:fa:56:58:9e:ab:8b:1b:01:db:07:e5:fe
Serial Number (int): 336719478736897397126604808991792519702014
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 09:27:42:fd:25:48:b9:f9:1c:84:5e:d4:de:70:03:33:ce:23:b1:72
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): d1:72:67:97:c6:2d:dd:2d:82:60:a0:a4:6b:0f:74:81:4c:8a:06:d8
Fingerprint (sha256): 6a:c1:32:63:48:e4:ec:c0:4f:2c:69:0a:fc:52:1f:46:60:bb:c1:8a:32:bf:6d:b3:f3:ff:05:70:7a:cb:67:b6

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 336719478736897397126604808991792519702014
 . . . . . . . . [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 2016-10-13 06:21:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-01-11 06:21:00 +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 619711149663914342914776254953812082587351022231599148330061533645342985793427001723473496977938253676872170992635642915513537380096938843767840401262044584925916661430043183284815342239975297014290017270569540477253104278872346946520885472242446371725872544041266634894222417600770267355490065571076846554613746414947543297949475194396394927851372629326339183359467352739402740136716351892448432841697414409380568104885929809521308241292583871861336653979262635041062069770815172659859051252772012857402474005649496257126731950474653870906605399971284966193925167729406873698694202736431466445394533335779994409515249222270318642439379216674384850844571540511685489818428704433513639286805187151297446807981883756584534462068705259521256097214873884243356135802247836365305341088777454927688818734026628234933932262774248851703595351591253875889214788675943334154265326890179299524615704984367566697086073552963034469338189744298216204359780577311763384494681641651163081343776424728721598746854111504469369600067482381124586620860578212497927968617408930252110246444056455936698413364753848828466716401740644677445662113328436436821620259197970821749706347216490170785652410824556242467682315995752326230265028405101945000738611977
 . . . . . . . . . . . . . . . . . . . . [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)
							092742fd2548b9f91c845ed4de700333ce23b172
 . . . . . . . . . . . . . . . . [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 (100 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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