www.vit4u.co.uk

Issued by R3

About this certificate

This digital certificate with serial number 03:d3:97:c0:66:f5:3c:5a:e6:64:90:38:f0:38:3a:e5:c3:a2 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=www.vit4u.co.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:d3:97:c0:66:f5:3c:5a:e6:64:90:38:f0:38:3a:e5:c3:a2
Serial Number (int): 333338149652194475094734443158539539432354
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: b1:12:3a:21:23:fd:88:63:77:05:ef:b3:dd:30:b7:cc:f0:49:5a:73
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 6b:21:2e:ab:ed:ca:28:ad:c2:5f:db:3d:a6:c3:c0:be:78:ab:bc:e9
Fingerprint (sha256): fc:4e:d5:21:06:af:4d:0f:43:a4:9e:30:8a:ae:f6:fd:f2:ac:d1:65:62:c6:11:c8:62:6c:34:4b:0d:c1:4d:b0

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate www.vit4u.co.uk

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.vit4u.co.uk

Public Key Algorithm

RSA

Key Size

2048

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

vit4u.co.uk
www.vit4u.co.uk

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(limited to 100 certificates)
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www.vit4u.co.uk
monitoring.millennia.cloud
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demo.webmon24x7.eu
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anchor.vit4u.co.uk
dashboard.flipkick.cloud
vit4u.co.uk
monitoring.millennia.cloud
www.vit4u.co.uk
monitoring.millennia.cloud
monitoring.millennia.cloud
vit4u.co.uk
anchor.vit4u.co.uk
vit4u.co.uk
monitoring.millennia.cloud
statuspage.siteflow.app
monitoring.millennia.cloud
monitoring.millennia.cloud
isitup.vit4u.co.uk
vit4u.co.uk
monitoring.millennia.cloud
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monitoring.millennia.cloud
monitoring.millennia.cloud
www.vit4u.co.uk

Certificate

The complete raw certificate details for www.vit4u.co.uk in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnnzCak7qFvlxAUrg8/Dv
/q3+qJ7TesYtReWzKr/O19GBSkvpzs3nouFGuSUvvAjmzPVAPFHzB2NjEl/Z0ceC
2t6tSdE6A/3qpOBQJAfwEaF47Xl5VTlPZDfCMSrqUlzzEI5Sg8BMJ9s0GrPdnDEd
R/5SegpRGPrRPDV0E7fbb7KhAqZzskvtcVjOu9YjYdNpMee7QYrpbR0r1jzAZtZ8
szjd74zskeQ7WpQaZrNWRkH6AJ7WvIBMFaLzf7pMFwcjzP7XQLPjXDxnc9CE+rcw
gecE3l0pt7I8ArllPiCMaURlodc79NkdQh1XHDDw4sFa+AjUPpl9OFSMSmtRdzKD
tQIDAQAB
-----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 333338149652194475094734443158539539432354
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-11-27 02:12:45 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-25 02:12:44 +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.vit4u.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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 20007173354781343719281948138641709305249525571085544734035283923126385527059255947435675447256110146785493939985170082488482535970966149511067082670781038802775999264273104819074073704677473590209358000064384903523624497946939935557699638026854030484443997015087865132976887279671594562314849310710672691912287807709810060725856289841830049379453032170313268156707542607453365001489844966993394473528216812987566022219037496991809382168776199414679432316237363019139593399673986510453034404982706517693714730164891230563078322626747841705983671041301948904596643711221447139215361765892086812714043584855436929696693
 . . . . . . . . . . . . . . . . . . . . [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)
							b1123a2123fd88637705efb3dd30b7ccf0495a73
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (32 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'vit4u.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.vit4u.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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00077003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c0ec3dba30000040300483046022100fee4d876c28b2628314f3799bb7c7d4be7d48271c75574c7cc5f7310fa768f24022100fcc79e4269bef91882257fe7e6903dd9a72f42203e8952004c4592e7a97833ed007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018c0ec3db9e000004030046304402204c598434614d21becb3c4d6fc7123842dfaa081d1a116eea9d7e38ddd2c64655022005554a7325fae158fe8289c02512aab7a32842120df1721a9a8ae22df9db06eb
 . . . . [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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