abcdefghijklmnopqrstuvwxyz.uk

Issued by R3

About this certificate

This digital certificate with serial number 04:3b:79:ca:28:49:ec:52:d1:32:19:8d:cb:c3:a4:bd:39:da 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=abcdefghijklmnopqrstuvwxyz.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:3b:79:ca:28:49:ec:52:d1:32:19:8d:cb:c3:a4:bd:39:da
Serial Number (int): 368687689623984933378378956576492665780698
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: bd:a6:2d:88:3e:d0:b2:22:bd:3d:0b:5a:1e:44:4b:a4:84:64:4b:ba
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): e3:aa:c1:24:f8:a4:37:1f:16:ac:a8:12:ec:66:ce:25:17:a1:18:ae
Fingerprint (sha256): 12:e1:06:f0:f1:a8:66:35:38:df:5e:40:4e:7a:a3:00:81:43:97:7b:2c:e0:62:31:1b:9d:b3:a8:0f:76:9c:09

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

Revocation information

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

Check the revocation status for certificate abcdefghijklmnopqrstuvwxyz.uk

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for abcdefghijklmnopqrstuvwxyz.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

abcdefghijklmnopqrstuvwxyz.uk
www.abcdefghijklmnopqrstuvwxyz.uk

Other certificates including the domain name abcdefghijklmnopqrstuvwxyz.uk

(limited to 100 certificates)
abcdefghijklmnopqrstuvwxyz.uk
abcdefghijklmnopqrstuvwxyz.uk
alphabetuk.co.uk
abcdefghijklmnopqrstuvwxyz.uk

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtEKgTjsM2lsJ1KlcDrZP
PwIFtyi6RjG+LoMSyrVWxYPZ8mGh9isow2TiIO7sT5aQzV+iN1S6o1Xs/F4PPaOk
wZoTpOzeNsyIgucK6JiR1LIt+zw6QKu+9COSxfzjtQAzPY9gSLioKXVzPJPHbskT
GJtCThfvyYE8xOxD+xwswu/ZsjPnHZlRDowpiMIt6OhC3+InxOqFMhcJ8eqnoKB3
NQzY0r0pbjIN34k3QKE0fg4Pade/cuVLEj5/L/J2ZqyuoEzQBpVuaRxtQfKjsjO+
8pHvMSPgsmBm1T/cl9VSwQvKfjO7E1Ts4lbNWQSQ/pbVhXf249A1xBvIgS6E+ItQ
5wIDAQAB
-----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 368687689623984933378378956576492665780698
 . . . . . . . . [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 2024-02-11 23:52:15 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-11 23:52:14 +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 'abcdefghijklmnopqrstuvwxyz.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 22755749494514327142248666913697200617517668396098460211350611745604076388385627901220741803457257303694091530299301834893976467363213736354437296836385917320025419532508332859690382738463415075629078151228764027069884068942382929589547078077779238219908565220617454903728761712865186281489541052966467990399760353676382130679045960166565840905888121790690321656996546126628185306133584560635217382066154216000372691239258117464497276811174246366527499451070686372968785425577632155596417056838301552800831635271551917287375487732393569822691696161270666800509942013494992217736398250107630202783943534747045199565031
 . . . . . . . . . . . . . . . . . . . . [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)
							bda62d883ed0b222bd3d0b5a1e444ba484644bba
 . . . . . . . . . . . . . . . . [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 (68 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'abcdefghijklmnopqrstuvwxyz.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.abcdefghijklmnopqrstuvwxyz.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f100770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018d9acce42d0000040300483046022100b491a35b0d0ac0722345e568791f98935019518644ecb14160663f607651fd35022100ce1d1a32250f39232a9029afe2ff9325c573e1e4b4f373e7e7bf6cf74d834f0a007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018d9acce62a0000040300473045022006a6c9d00f32408395807ca45f324adc830a20cd0750f642a80033968ea26265022100ff430818aaba3843ef0785f53eeec41ba2c5c4415ed204c5d81a87fccd9ad756
 . . . . [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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