f.uk

Issued by R3

About this certificate

This digital certificate with serial number 04:a3:34:8d:1e:cf:d6:2f:00:dd:82:0a:a0:84:ab:d6:51:b9 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=f.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:a3:34:8d:1e:cf:d6:2f:00:dd:82:0a:a0:84:ab:d6:51:b9
Serial Number (int): 403985022129730629532816501039941503308217
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: a9:6c:49:14:4f:dc:ca:d4:56:ed:14:8b:19:63:5d:ac:26:30:66:14
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): f8:36:07:0f:28:17:14:e1:c2:a0:79:e3:bf:d3:6e:45:e3:aa:2d:34
Fingerprint (sha256): 4b:ac:ec:69:43:c6:c7:27:89:1e:58:54:7b:d4:bb:c8:ec:46:26:d6:6a:69:16:7f:4c:31:cd:5b:46:59:4a:ba

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

Revocation information

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

Check the revocation status for certificate f.uk

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for f.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

f.uk
www.f.uk

Other certificates including the domain name f.uk

(limited to 100 certificates)
get.farting.health
huahinselfstorage.com.f.uk
enerpactoolsgroup.co.za
goldaffiliate.org
marketing.world
f.uk
www.epik.africa
www.epik.africa
bisure.org
f.uk
hospital.be
marketing.world
lease.club
www.epik.africa
f.uk
auction.world
f.uk
marketing.world
skupos.org
bramptonhomebuyers.ca
www.exortwex.world
f.uk
auction.world
tksimplex.cc
saintflanaganinstitute.ie
5272653.ca
shadi.dating
hospital.be
cannabissummit.org
hospital.be

Certificate

The complete raw certificate details for f.uk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA21WUxYUCD+yddbPs4qom
Y8nzfrdRQEC52477+cKOm3m/t4du3vbVKpgHeN5JvHvSMKl+Z+WXVOvquYA8M3BQ
qi3L7phDBCUln+oP6iVQlDvM7DGerF5hzuxhNIq/UFfoE8q0jNWOFB6Rdqsx0twe
x9EF85Se4Xw/iCC+qN41urbEYWJi9aDsj4geic45vhlkwwY0YWU5xHgIt84YCkqG
V2cOdXXf5ol5KIQydo3Bl+vtKwwDKDCFWyPc7BjHzWBKMrImBxGC0HbUgKg56UeJ
MgpKDuQo+jINaxhxKltfXLqQOcQb5w4XDCnhwB2eWBgO9Tw5/KHVFZpGg19NSs3a
HQIDAQAB
-----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 403985022129730629532816501039941503308217
 . . . . . . . . [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 2023-12-26 05:01:09 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-25 05:01:08 +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 'f.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 27688390420039417550137791819184620353869358949812591482278432708700508907181748342210836601796105493850610363199484787263549433883937180961506744390095190298430577751228139831713165536442145305070188519622372315676974137035599263959697098480699992198426720433489922566694394013221119756824320203260878262409141262207030274356500330949290763060903815259734850249590116029339320128805354060601847141631494819803627080645284682029362828951533079846984795949963727992576092736969782090249387661961619470663826271519014599719990594246308214913157192161825724873781295052731188844809849772150182604059665738605830251338269
 . . . . . . . . . . . . . . . . . . . . [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)
							a96c49144fdccad456ed148b19635dac26306614
 . . . . . . . . . . . . . . . . [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 (18 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'f.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.f.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef00750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018ca4b67429000004030046304402202c313450f53fd260bd153a3ee0cd32dbeb0dd8411193db998ae56b3141a68d1602203f334f8ee558a0aea49c758f5945b1b34b3a7e2b65bd836fe0f9ab87b7bcc7600076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018ca4b6744a0000040300473045022100a818c381ad4f854cf69f8c4e6042b73e019a9560d05dad765343fcea3dd38542022045a7f23ff2874a29b7ea8cc9fb3885bc87e9cd5d8588835f2a7d5fa1ecc4103f
 . . . . [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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