sfek.kz

Issued by R3

About this certificate

This digital certificate with serial number 04:cb:63:99:46:6d:f1:a6:a6:12:2a:32:c7:52:98:c1:fe:24 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=sfek.kz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:cb:63:99:46:6d:f1:a6:a6:12:2a:32:c7:52:98:c1:fe:24
Serial Number (int): 417658853633472886492577946309239144316452
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: cf:66:7b:8f:c5:ae:45:42:40:e8:01:c6:74:7f:69:52:03:14:04:22
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 90:8d:16:23:6e:f6:d4:df:96:89:68:6c:62:bf:fc:07:93:94:5b:55
Fingerprint (sha256): ed:1f:ec:37:7d:91:8a:c1:a7:8a:3b:87:a3:c7:6b:e7:7b:d5:8f:6f:3c:6e:a9:5c:e4:76:83:88:43:18:55:39

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

Revocation information

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

Check the revocation status for certificate sfek.kz

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for sfek.kz

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

sfek.kz
www.sfek.kz

Other certificates including the domain name sfek.kz

(limited to 100 certificates)
sfek.kz
stat.sfek.kz
sfek.kz
sfek.kz
sfek.kz
sfek.kz
webcam.sfek.kz
sfek.kz
sfek.kz
sfek.kz
student.sfek.kz
sfek.kz
sfek.cf
sfek.kz
sfek.kz
*.sfek.kz
sfek.kz
sfek.kz
sfek.kz
buh.sfek.kz
sfek.kz
buh.sfek.kz
student.sfek.kz
beta.sfek.kz
*.sfek.kz
*.sfek.kz
sfek.kz
sfek.cf
sfek.kz
sfek.kz
*.sfek.kz
sfek.kz
sfek.kz
sfek.kz
sfek.kz
sfek.kz
sfek.kz
sfek.kz

Certificate

The complete raw certificate details for sfek.kz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsTF16RiZ+3RRklcCmyTB
QRAg/0EQRHOPexIYJiv5MmYUDe6eO9PXKH5ClJmFNp+lAjSID75zUnPFxxRqK/De
scMAU+wgAXmlZuv1meZW/jHrRwkv5B0ENuYKABC8T6b3nyxmIA6fGDClPrm3jEfu
FDjrsX+H0sgUhgQh1vbpbwy8cmgepUU0JGzJg0yn1jDg+F5yJTPdBQJCmJn+zycW
H9Ft6nQOyWCYc/mqlLgrpMucSXKl89DXUkFYfrJv7L9+UbkK8M9jDQ3xa3a+1fOG
7AAhfdJ2OBCuU//3sg4tKGTmXglfX+Uz+73zpgmhU9gNDli7hV+Do4fJDu1hFOGx
HwIDAQAB
-----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 417658853633472886492577946309239144316452
 . . . . . . . . [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 2023-12-11 08:49:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-10 08:48:59 +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 'sfek.kz'
 . . . . . . . . [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 22368569903967137995163096642544416933338033223162592492064827431975405375258206224810419359368344213623669328003682838783925396624717823032236847699971213364245966378915511626479787403381715466117373318173618746259143748116755659333180049976991027348195909223762711787616352609600859284286522114120496722269600643585344650856571186721641664252656585063362477708337976469014046784669880473273694380643735126592456982426212345031659220460312019700649726763363779712673076320993247541849526160259992579282122470949352806577110254794995942570303610542385244560455026122212170742843075507867810421852796727936514007347487
 . . . . . . . . . . . . . . . . . . . . [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)
							cf667b8fc5ae454240e801c6747f695203140422
 . . . . . . . . . . . . . . . . [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 (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'sfek.kz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.sfek.kz'
 . . . . . . . . . . . . . . . . [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)
							00f10076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c5847aa470000040300473045022067e157e8f8acdab123bc20994ab7fe8969561dd7f8292bccb546590e1530160b022100b5bb5a8a5ffafd4f6bb547013738c56687c6da4fe3fae61913407ce2baa6df6000770029d03a1bb674aa711cd3035b6557c14f8aa78b4fe8389449eca453f944bd24680000018c5847ab1e000004030048304602210085820de103691a82a9e4c2734d113d663976f081f98db8001130c9e5f0f3f2e5022100b2ff0eea61d6ca060ed7b7300506f03ada77e29a186d55d3f16494410ee93ce6
 . . . . [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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