www.oscotech.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:e2:58:1f:e7:fa:09:50:7d:cc:06:34:65:6d:b6:ac:68:dc 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:e2:58:1f:e7:fa:09:50:7d:cc:06:34:65:6d:b6:ac:68:dc
Serial Number (int): 338357810449291061604381686103549319866588
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 6c:75:0e:f9:5f:81:c8:48:73:63:8e:1f:11:bd:97:e1:84:48:a1:17
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): da:d5:36:98:99:da:35:a6:d9:27:91:0d:73:31:2d:ef:2b:70:e6:17
Fingerprint (sha256): 4d:7e:67:d3:b0:7c:a3:f1:8f:c0:e2:f8:b2:23:54:e5:f8:57:6d:4c:a6:3e:30:c4:66:8e:57:a0:54:18:41:07

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 338357810449291061604381686103549319866588
 . . . . . . . . [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 2017-12-07 07:13:15 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-03-07 07:13:15 +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 629656666094086274043864266800788549748072907887138916259041906362749063696885148710717924739194655107228144282117369723041213689279093991571040398464170332851541541328956120990290013008374090680136010925152781911429290428992301626037394043087002975472596623351019818432766117541558371140853268768863715117111734158093862271334047861605698990014378494264710011451855854495211801194192767147038518428048581815971712075866505098948831353237372666519184374983059117000707785799877662247534487335292396405125457695626474739987779568399266130120431983829180487611076042749346824921696822380352007394821852163284654735155892046543076301398633767678029613893280162318222569691585556976883880045272304444961545282371928182185010127489492602256542173360306179360487722334503099524888270718109574413254732165920618675128523166551695476317902584113335908223536688666922412171576227156043020460267296514549408948368065199255637162089490133229863402053314973364906184655608555168655457569747103191597910932767385456656562828614702306300355658181428202692269354355925408305861687485234524295363778117368501954838332982500869083488973377753796747597723618746049360670543580461059713111051652218531110404764163770970050882063468636236051875299970983
 . . . . . . . . . . . . . . . . . . . . [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)
							6c750ef95f81c84873638e1f11bd97e18448a117
 . . . . . . . . . . . . . . . . [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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