www.oscotech.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:c1:89:01:60:e3:7e:85:75:ac:8c:e8:76:16:e6:e9:8f:d1 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:c1:89:01:60:e3:7e:85:75:ac:8c:e8:76:16:e6:e9:8f:d1
Serial Number (int): 327193466003876526693088183368321321242577
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 03:3c:db:44:d6:2f:0b:41:f5:0e:5b:37:21:6d:37:b6:fe:78:20:1f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 69:40:ac:4e:d1:33:13:b5:c4:35:42:a1:16:d6:43:de:4d:e2:b1:10
Fingerprint (sha256): 9d:17:21:ac:ac:85:d2:a3:ab:ad:cb:40:2c:d9:aa:14:be:a8:70:40:26:e5:c2:e3:4a:38:a6:34:d2:76:7d:de

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

9 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)

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 327193466003876526693088183368321321242577
 . . . . . . . . [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 2019-08-04 12:28:48 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-02 12:28:48 +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 738344856913485235684093161760190124668619880653562963188845910621041591269790648200858287930347434235195368859530447431961285141237134429041954952593642985979416084864932230797980033724615609987038727385479776885251935053421439898664413334002524724630360584166567394056356901100447260962211530623482716446396140563406553329116990657089225005155332357835516734267096937299721515147982115849233958014587710889200816588344490311563963950082647018828694087231163647935156197134481893457456179299331316400674998332725124447333734362165280778722181262150163239705881665996861011580731377851435507615068020988708961813761841555002445250087726764485357269594843093977492307463823578912103536328392429512130544914783812597456500021794446487607341839296277469252401214310781905255200115502814686758550876903822119498563878837305264221171171108122717619394061590703799317133238648146188372407371787021282392931819427359664603371147373587954019852295256553846883773768415089988137742073263156226303637937553306152884029008707980410868577649820137265181876704940723861864216936974168467530994382070691378428915351579748533761083305924396930500608916920762392433776842766376030193839869925483153085775177289146345795346521395827149734377848439313
 . . . . . . . . . . . . . . . . . . . . [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)
							033cdb44d62f0b41f50e5b37216d37b6fe78201f
 . . . . . . . . . . . . . . . . [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 (69 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016c5cd17e8d00000403004630440220520254a17e04b44ebac60ce8890a9c95c48beacebd8029309076f5f0028aa582022001c390483d66ce995cf0e0dae4ca4d34da23e9019546bd7825c6078e4e0830c800760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016c5cd1809c0000040300473045022100ca38b47f331b80d604944e5e849a4521bb42b50c52bd39dc81594260161c5af1022012fb8783d070e4aa666628e0cac3b4dbee25e79863d81d0329278fe0a5f1f9ea
 . . . . [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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