www.oscotech.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:bd:d3:40:fe:b2:55:1e:1e:fc:ee:a9:cf:6e:d6:53:ab:2b 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:bd:d3:40:fe:b2:55:1e:1e:fc:ee:a9:cf:6e:d6:53:ab:2b
Serial Number (int): 325931029723308667907609942595047102065451
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: e2:e5:4d:60:44:79:e3:63:c8:bb:f0:46:13:61:39:f1:68:54:e4:d6
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 70:d5:e6:9c:8f:c0:6b:de:7c:9d:58:1e:4d:eb:84:15:ed:27:81:2a
Fingerprint (sha256): c4:a7:48:13:64:97:e9:73:5f:f6:03:a5:b0:41:df:02:6b:17:f2:9b:97:09:31:8f:0b:a2:92:d0:e7:db:da:72

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 325931029723308667907609942595047102065451
 . . . . . . . . [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 2020-03-31 15:32:57 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-06-29 15:32:57 +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 723504369236585655997315224418599989927133883657952918240260224476242255343808579048177819287385301996015560944147066973043081599869440747929301569681163163142572012663613316398936256207326797563301231667009317703111970196780007353505540894399861309792833276559031162769346736149398066864536771889986517338401112310415880170669232458495994518834383150445170391396166681801239231450410077571804477573613448033541920057355315381531656185933150353541239677082870521178288803914605076721273722994383570304967538125347358004125164627877104928963022481940494717928031472511976060663447904110843164804927847238388263489888446852884040297435024582074006220033923912769789481405096677739295792322717335728982298132633772460826486946943665231374466087026605980637437562686776204028641317894494278778794560128903908326817007886338557891283343854543953476474552460582491850175276528821318106199947626230975308147086371255461918636999318422790271211609634651105739344006072133662170420238226737444419075080022573145008247443672135771867118762396829555973420833396032015193625277477174256625524256564822289104836139612148315741283549145049210661913702332142884422340921984504489348886610715369946648751685903056130565834795709581104308919006593231
 . . . . . . . . . . . . . . . . . . . . [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)
							e2e54d604479e363c8bbf046136139f16854e4d6
 . . . . . . . . . . . . . . . . [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)
							00ef00760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c00000171317053cb0000040300473045022100ea99876cc5b927383bf709855478b5c7f4d98d7840059ecf83d3880e0f19b34202205bb1c895bbb1cafb5fdb38d72b631776ed976b82033c575280e0322d924cce00007500e712f2b0377e1a62fb8ec90c6184f1ea7b37cb561d11265bf3e0f34bf241546e0000017131705413000004030046304402203f889090292c2a257b2a0b374fb4ba2e8b0c7ea8cfa1d3b8a3e2dccb77a2d46e0220215da436373b243aadbd570c118e53c09f25478f76868d463d900b63cf5d80c1
 . . . . [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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