www.oscotech.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:c7:7f:3a:f3:87:11:ee:41:31:ee:60:51:2a:ef:75:94:86 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:c7:7f:3a:f3:87:11:ee:41:31:ee:60:51:2a:ef:75:94:86
Serial Number (int): 329222166860556858409113002058547302077574
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: c9:32:f0:c5:72:b7:0b:2d:80:bf:4e:0b:c3:09:ba:c9:d1:5b:22:9f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 97:a7:8c:ca:86:09:e8:0e:38:9b:cc:9b:97:d4:e2:26:0b:72:9c:0f
Fingerprint (sha256): fb:d9:bd:b2:24:89:73:a2:a3:f3:8a:68:b2:58:b0:2d:99:06:05:1e:cb:a9:c7:38:83:46:96:09:40:14:f2:f6

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-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA0Lskv4uf2JdcH+noX+px
xdiW+I3qsTSAHM+UT8et9LtCo4oHC+rCnM5CdUILivVMyA6maLopdIDqh0D3vkSt
FOvMt4t4vS+ct5/4TUhy5Xx/UPW6zzTC8Z0OydGW3tpcHSZtaFJNy28X49dAh5pX
tkHP9UYJWw5+lqUYhAqqZ8Ps/WuFOlPY85upCtf8d5OMALQ9LXywYR9yzNbyK5N/
JvDFPIKV0lIFCVxCB1cIYpQWCzNAOZ536tHsxy1ECU3yQkuiOHIYOF9N+XpI1TUh
2X53OQIgeRa2mbuHaq/SXhspHb7mkgHmBayjh9G7k+NC9fSMqP4RHb8OALJJR+U1
vZ2xEp4Z/k3ty39LrM4wTW6lUksfU9GSvgkfP+XF8cWmlPJYRxaG/5zU3V0uoPyt
bx37IWGI1na7XpC5UuZ9lrtpmD+ExoPpJfJwz2nQM1GiB3IWcTEv66oYYu8VrKR3
IKwLhfxc8OUfBakH6QQddwkAbQ6Q0KGsPkZLDTSjm3s/wszBEarm/z1FtLvYizlM
6amCY+oeQLAvTgyq/ZDTu3ZUm0wdnQXiBJNsW/nm3yWkHyJoTdVIkMqQC5EamztX
ztkweKQm0+lUAeo1ODJPDjpuy0GNL/iM4pkdoone5o7Nu/WmDJgIFcCYcwVnXgYW
7voNw6y9V7CX7QDpod1rr3ECAwEAAQ==
-----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 329222166860556858409113002058547302077574
 . . . . . . . . [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 2019-10-03 13:29:15 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-01 13:29:15 +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 851548306243696180879999518542674108437025045727107029083568950393976951814787130267840145372903812816052489536126592630674885102077893192205997193807365328826113058000499944137858696005674344618506712901091840962518193839846223013771965950696798184497846776712176042267598227460860308565293146046994988912536610482652514023334698036838178148717787438933940018862606566115904014138664819730403684301347949771142301228357500983695510034992371238905622068147731736900912017829669199278933421159698818581093554571538044616033576341898755944157667633487479487911158973462886916030119700330370631263575111907596504421755913526959809852967458033161545811840961042029779742274173482344185282914663290582408589521348190017145240740340493845948558522456016544017573733400688595953866728462561222304784784561687636989166904319733281426455529440080623624675287742789186474544965145351840996289413998048025848163043039243605181002379419951697879858378787852594810550256184317953622614673254856649869308278600509129162061344334061008877564949883957245775757761054093149788996050103368034033605450067101334466049210271915465354208728265348038173411777697864682530613933694037591306696656032412949612036622422485258247768889328224477757139552284529
 . . . . . . . . . . . . . . . . . . . . [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)
							c932f0c572b70b2d80bf4e0bc309bac9d15b229f
 . . . . . . . . . . . . . . . . [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)
							00ef007500f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016d92066322000004030046304402200dfeab1ada593214f0b91acbdd591def4ceafc6c44884ed6d2be0adbac084e6f022031375b66474e5979f0c8ccfbaf9ce375065f64365d94acbf37020e888136264d007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016d9206653a0000040300473045022100cc7c1738d3b81483660ff45eab34989d164182d2bd8d342a7b69d3365555c8aa0220778b72f25cb8fc4cf5be5a9c91c5476a0632443b03b88179012e5d8879ef5f39
 . . . . [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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