www.oscotech.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:ed:7f:4e:a7:75:39:d1:67:df:ca:f8:89:fb:6e:b7:45:ac 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:ed:7f:4e:a7:75:39:d1:67:df:ca:f8:89:fb:6e:b7:45:ac
Serial Number (int): 342152999106612798438691291023860328514988
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 0b:b3:45:e7:b4:64:3f:4b:c8:cd:b4:90:f2:4d:4e:2c:ba:e1:2d:9f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 3e:ee:03:0d:f7:bf:c4:7d:95:cf:90:00:13:5f:78:ff:eb:47:de:df
Fingerprint (sha256): da:b4:e8:76:23:f6:c1:15:da:94:e4:34:50:61:72:77:d8:fd:75:0a:24:97:22:10:44:8d:05:db:5d:0d:5c:ed

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 342152999106612798438691291023860328514988
 . . . . . . . . [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 2016-12-12 07:16:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-03-12 07:16:00 +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 655601097694877887387304196581376866392808644597829513824260200596137915172885289434895385644155325534780924112025944871417082756582996943977706059017424391690322557837083787991174256316250805283063535995050958392276974404486913047279980342322229255777568299009058015097700238952669686106123127512650611368569412252462725325225442952023298019823944910008970202579696710994159118155361463882688382557880572689749947049832232155205038386935081111913332987422694819480921101657556588750125537085531305708816074995886506325130286710907780642110929786695378842571705912761947197563652148315228314264696465794081328500478030608767292919495669929257038516525218206029455939854223886276029874698036496645969254305969908642938896925902704762430460230866963107843208814725683493779919664788693157619297091879310129221211134196563488030956912627802186177436636750637097496214721039570160472929928781517560701416271650689151154448304917071804587413195723551306519284448228098488741430252005578835517502992304684098972962963260410103216863056408612377760078609738240682501497462927552231411450459174809396529053008965993922247278627023529820940101943667871812843862379405456188870082115395812332741131261335288727719103987967772740237557918958281
 . . . . . . . . . . . . . . . . . . . . [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)
							0bb345e7b4643f4bc8cdb490f24d4e2cbae12d9f
 . . . . . . . . . . . . . . . . [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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