www.oscotech.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:b8:35:c0:74:58:0d:10:01:aa:28:8e:22:bb:de:2d:c2:bc 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:b8:35:c0:74:58:0d:10:01:aa:28:8e:22:bb:de:2d:c2:bc
Serial Number (int): 324020261673242491425952263397405400875708
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: ed:b1:3e:7b:6c:45:eb:c4:24:ae:31:57:d5:2f:4c:65:45:00:5f:e5
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 92:96:ed:f5:78:c6:96:36:ce:99:7b:a9:5b:63:6e:d2:54:b1:b1:13
Fingerprint (sha256): c3:7a:e8:e1:56:6e:7c:eb:9f:d3:69:85:65:1a:65:e2:36:14:a6:9f:15:e0:7c:cd:39:ad:2e:8f:f3:ba:a3:fa

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 324020261673242491425952263397405400875708
 . . . . . . . . [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 2019-04-01 07:07:36 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-06-30 07:07:36 +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 629247334563263728372456358446945898895735679770593344571994601038747852408267156665461131569604443296621995320141984875659650331944904111766319169473273712450423344790643755489466699945529308894041538501426771719529078393614421432533797168779479422087995205315356546749695519576125139664889049085506570319227230894556177491647572539116923109027154885291176400587617269896631848536553401097641279181682407855972098972853853662105984296236638031287666411989885920045821090592073124416966884654538292257840636805611342939703156671589580660652056139686784066772658784579810397550003218051124123018475625986441165271862570404750119141930866090664514896061862999598125029566244323600898608928978278667790956881046630335403039729569956328928410278714454610028362293806019351356896374247900048956762112626852617989915888083691371714610032346573530200124004361907115744241998136022041118786210894672986570949002452868723152151493446458197024164044147525503540599914542912144156373265990852853126557193113528193691389830502283677335913470660466449244895922180127936449681601594228144711561636240513480679963123865203540098809133761224378465258537923668540702046114160209863078916848993621216369014837675852101073081984569113125214903788767093
 . . . . . . . . . . . . . . . . . . . . [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)
							edb13e7b6c45ebc424ae3157d52f4c6545005fe5
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe00000169d7f0802f0000040300483046022100d4553fadffd1457860d1983a89e8002f5082ed74d181ed760e0325f37bfe9b02022100ad586e2bb710c7e9703576d2e5284e6bf991e5885229a9a9c5ec7f1697935572007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000169d7f080760000040300473045022058b6f713ae8c9bac5ea308a6813f0ba72fddc834604f50a47cc5fbc7be2013dc0221009eba74d3960b473aa8685d2056496019269b30f34c3e9f5e00c408ebd5f753c6
 . . . . [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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