sfek.kz

Issued by R3

About this certificate

This digital certificate with serial number 04:07:18:9d:f8:3f:09:31:93:fc:9c:d4:d7:68:4c:cc:3f:44 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): 04:07:18:9d:f8:3f:09:31:93:fc:9c:d4:d7:68:4c:cc:3f:44
Serial Number (int): 350863841993024985024940815931903711133508
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 72:db:9a:fe:8b:d5:90:5c:3f:5b:5c:a8:67:47:12:09:5e:dc:02:07
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 3c:e0:d5:9c:22:02:1b:c5:9b:02:ff:96:24:d5:a9:c0:7a:71:d5:1b
Fingerprint (sha256): 73:8d:1e:69:47:07:28:45:41:99:21:50:ff:b6:04:c2:10:af:72:27:8b:5d:02:4d:3c:7e:97:c7:ae:15:39:ab

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArWSyoqy0qPDhdYar7KtE
POw5JcbguARIrYk6Io/8gpjLRS/DteUAeMyBUWQLB6EfwtkIAcDq47oYAfNbZ3vl
eOo2UvO7vR1arTF10SkfJpMQHYF4pUqZQASnsqYdVEKuox112Vkk9tzw5vo6lNR2
U5KE4wwKAf/J76t+qdO1xFXmr6ffK3ewVgX8mRmwjsYNwxnW/1JXnQf7QS+3nb3T
QT352SgERPWyJHyUH6oVPQm/xE6kTN6wqb2qsvlsywZ9koLu7a6d4ooFzlOZGgte
SdemB+xHkxOXxnsyn3gTR5uFxWTWxBYiRvKNf4TxoBh4WqFIH2yR/z9krTLIgSDk
CwIDAQAB
-----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 350863841993024985024940815931903711133508
 . . . . . . . . [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 2023-10-11 22:45:18 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-09 22:45:17 +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 21888882692405511141763159627165661327827365174569213043582619465907882070521397224838289840142198535277174316408466278672581987107151522884359392697131407163317809000560956505763178047879545615201813457415973222721088321085921308196433607298062918636359232120681727927036834038265284029473531181046545558620395901856083530062769609050194276470754623081826675083456963617828459944946066609708951242079322781205225686131569085285776539952577413624121857880321229881498433513448134229568607820990805169694285139795890533934941193827915160809043795031016049748116994639641782894186086698478142890868031032535848218321931
 . . . . . . . . . . . . . . . . . . . . [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)
							72db9afe8bd5905c3f5b5ca8674712095edc0207
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b2121647900000403004630440220685459f94e56119a3521e91971e901cd0444940ed39bf88c298a0464ffd2a16e02201ecda2156f3893829cb846fab30d8c24e616340941c9184f48753ad1fde8b0af00760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018b2121649a0000040300473045022100d707f9889e82879cab43f2931be2dc5c143b050e574e5d00ca137d23373807f0022036804f16393d2b05a793c0c6b459528ea3a066c7679dadff6dafd819594a59c0
 . . . . [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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