sfek.kz

Issued by R3

About this certificate

This digital certificate with serial number 04:75:b6:09:8f:12:ab:79:1e:ab:2e:4e:a9:6f:c4:fc:ac:20 was issued on by Let's Encrypt.

With 5 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=sfek.kz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:75:b6:09:8f:12:ab:79:1e:ab:2e:4e:a9:6f:c4:fc:ac:20
Serial Number (int): 388504149784559116923005553330473446190112
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 3e:17:13:f4:d6:57:06:00:dd:3a:7b:fc:b9:25:14:05:01:9c:64:e1
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 01:9d:4d:8b:35:31:08:1f:82:f5:a5:9e:ea:b2:a5:cd:b1:13:95:df
Fingerprint (sha256): 4a:e4:b2:c0:6c:09:e7:5d:42:05:6c:f9:89:26:36:e1:3d:cd:ac:85:e4:df:71:5e:71:d1:b7:40:ca:98:5b:45

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

5

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

d.sfek.kz
edu.sfek.kz
lib.sfek.kz
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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2kRtxJWray8ZKoZk0dWQ
vXtcAt+MNFYGK/HsE3sn/dazwlqOTlnucLCUH28M2aMSC5pkzFrfldv2ad7P8M+t
Kk0q1Q3qNVjakrtUzpJLPIgDb38zfyAlrVzP4PMgCpKnyACFbz2Ft74LsqNQmjqA
oknHnh4kZxw3ErMiXOSMYK7tO0cVRS2BGxMXyB8+N6gd3vzU3BL8fAonM5wIgQPo
jFNpNRYn6plQ4vWy/ufSrs1MnNnXpLmnT9OtjziykgDg/DsTo5T2BA3ZrGWti+47
+vTpMsZhTFTp0QVZJyjwKzOCoKFrkKfJR/ljV+TVrluHtNDwCVn5cpLaD1Di8b9E
lwIDAQAB
-----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 388504149784559116923005553330473446190112
 . . . . . . . . [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 2021-02-08 18:51:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2021-05-09 18:51:00 +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 27553693972096519642645483002967357031489709744543166849001792084414001740776938242870983166728628393699310305372350553088656688753437052153272907170819905230107842824345726577724339411736013875528586446993033163344039776831371666863797987107791509204826636520336716127756631191579874742083989798613107007853961243206208644776289291525980484467520832526195802637630608402541218309849081470522320096198605757011678871713978728899968156664563122820932781926180090516019107457261342483373273813689870046194840679601311090673435261099052296395819789743353932548238582731547580417115586308717325236774344794031678201742487
 . . . . . . . . . . . . . . . . . . . . [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)
							3e1713f4d6570600dd3a7bfcb9251405019c64e1
 . . . . . . . . . . . . . . . . [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 (61 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'd.sfek.kz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'edu.sfek.kz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'lib.sfek.kz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 (69 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 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [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)
							00ef0076004494652eb0eeceafc44007d8a8fe28c0dae682bed8cb31b53fd33396b5b681a80000017783327fc20000040300473045022058d60fdc791edf40179a95d7ac97fc5a3a9b0d5e0b7702746d3038bbef174409022100fe75f9ac25a289334c3c4c3021f0e40d3ebd500f079cf51b26a33731e05cc99f0075007d3ef2f88fff88556824c2c0ca9e5289792bc50e78097f2e6a9768997e22f0d70000017783327fd70000040300463044022071e0dbd38b0478c441bc208a4fd684d8a2c8a5338bce22552aca7dc3432b6587022005db3b2a88fc0cb3060bd589ed32219d0b87883548371234583347d026bc0614
 . . . . [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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