DV SSL/TLS Certificate for semikashev.ru

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the semikashev.ru DV SSL/TLS Certificate

This certificate with serial number 06:9f:4d:5f:e4:e9:41:de:a6:4e:40:9d:2f:e8:ff:7c:47:b0 for semikashev.ru was issued on by Let's Encrypt.

With 3 subject alternative names, this certificate can be used to secure multiple FQDNs. This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for semikashev.ru provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • 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)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 06:9f:4d:5f:e4:e9:41:de:a6:4e:40:9d:2f:e8:ff:7c:47:b0
Serial Number (int): 576881460397737632092189390458430896752560
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 31:6f:3a:6c:8a:cf:89:d7:26:d8:c1:2d:4c:c8:b1:3c:7e:8f:88:e4
Authority Key Identifier: c5:cf:46:a4:ea:f4:c3:c0:7a:6c:95:c4:2d:b0:5e:92:2f:26:e3:b9

Fingerprint (SHA-1): 5c:f5:af:5f:4b:f8:77:1c:11:96:1e:e7:b9:9a:aa:f4:ed:9f:0c:0c
Fingerprint (SHA-256): d4:c4:eb:6d:ca:4c:2d:17:5d:b3:60:59:4b:4c:2d:fb:36:6c:25:06:3d:ca:9e:8c:04:c5:7a:a9:9e:5c:c2:86

Issuing Certificate URL: http://r11.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/49.crl

Check the revocation status for certificate semikashev.ru
3
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for semikashev.ru

Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Key Encipherment
Digital Signature
Extended Key Usages
Server Authentication
Client Authentication
Extensions
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

X.509 Certificate

The complete raw X.509 certificate details for semikashev.ru in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwxRu6ygKRfGlVX42JcaB
zIKxy2a1RMO/bKTki8LjK3fTTYBfRdGOwj/4Htuo6Cg7PwotEtedzHqlP4goIZoV
r3QDlOcrv9yrFmU/7ekOi7d33CGaTMRw+ctKP5jmgCI6rTCBL1QVH5pFMUuHweZN
iGpKCTZm0x9shNDni0xviqV7vDENRm4BLtk9Mrk5acKEBfweATP7/T1+PV3HZuTw
MTah+A457rRnceHmI3Sm/nGjZNITi6cDieoazshpOd/L8kZCR3qXlj1GieASAZbW
nsN43qvuBHbWaueCkQP7HKF+kBhVlSqcc4hhne9wHHhi5ivzE9C3iJrMJVf9TFS2
owIDAQAB
-----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 576881460397737632092189390458430896752560
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R11'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-05-27 09:14:15 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-25 09:14:14 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'semikashev.ru'
 . . . . . . . . [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
 . . . . . . . . . . . . . . . . [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 24626545492168640582833366959091542838300201296000382592926593518057975780721451804533516616054455324717221102478355121028293089738157025951249660297064484138346883621928514201822299993631504077042795542147602798291643982523771228804553426831040696371121860933861908267849018901981920612806171145853143332819717268209615356494420530837502675918187914420109025499856927710192068772546565787928192958724092220074613149546313536959545342880140895946690357800377492840605050746364424361228931654121427120835086702897569649097010115216686055739098713114224613548250304440686813886923160637355133680397825985205418306352803
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							316f3a6c8acf89d726d8c12d4cc8b13c7e8f88e4
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName c5cf46a4eaf4c3c07a6c95c42db05e922f26e3b9
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (56 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.semikashev.ru'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'semikashev.ru'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.semikashev.ru'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.c.lencr.org/49.crl'
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db000000197113af4030000040300463044022000e1f23b27840be0c4f3e7c8f5ee10c0ada402f30af5a5ea21c6da3364d35020022055683983aea864351a6789b57d056db2733a81497dec2baabe1403561713c7610075000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa3400000197113b03900000040300463044022072eabdeb052573c7bd1655a6383ff6840fe0a1122b6a75da90ea262a713e9a4802207c171b38492bea9313c3c0d19af4b5c64ab9b99897e93bfd2864e05da0590f81
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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