Certificate Summary:

Subject: R12
Issuer: ISRG Root X1
Expiration: 2027-03-12 23:59:59 UTC
Key Identifier: 00:B5:29:F2:2D:8E:6F:31:E8:9B:4C:AD:78:3E:FA:DC:E9:0C:D1:D2

Download and Install

Received at FYIcenter.com on: 2025-08-26

Certificate Detailed Information:

Name:
/C=US/O=Let's Encrypt/CN=R12

Subject: 
   Common Name (CN): R12
   Organizational Unit Name (OU): 
   Organization Name (O): Let's Encrypt
   Locality Name (L): 
   State or Province Name (ST): 
   Country Name (C): US
   Email Address: 
Issuer: 
   Common Name (CN): ISRG Root X1
   Organizational Unit Name (OU): 
   Organization Name (O): Internet Security Research Group
   Locality Name (L): 
   State or Province Name (ST): 
   Country Name (C): US
   Email Address: 
Valid From: Wed, 13 Mar 2024 00:00:00 +0000 
Valid To: Fri, 12 Mar 2027 23:59:59 +0000 
Serial Number: 0xC212324B70A9B49171DC40F7E285263C 
Hash: aa76c4ab 
Version: 2 
Signature Type: sha256WithRSAEncryption 
Purposes:  
   SSL client 
   SSL server 
   Netscape SSL server 
   S/MIME signing 
   S/MIME encryption 
   CRL signing 
   Any Purpose 
   OCSP helper 
   Time Stamp signing 
Extensions:  
   keyUsage:
      Digital Signature, Certificate Sign, CRL Sign 
   extendedKeyUsage:
      TLS Web Client Authentication, TLS Web Server Authentication 
   basicConstraints:
      CA:TRUE, pathlen:0 
   subjectKeyIdentifier:
      00:B5:29:F2:2D:8E:6F:31:E8:9B:4C:AD:78:3E:FA:DC:E9:0C:D1:D2 
   authorityKeyIdentifier:
      keyid:79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
 
   authorityInfoAccess:
      CA Issuers - URI:http://x1.i.lencr.org/
 
   certificatePolicies:
      Policy: 2.23.140.1.2.1
 
   crlDistributionPoints:
      
Full Name:
  URI:http://x1.c.lencr.org/
 

Certificate in PEM Format:

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

Related Certificate(s):

ID      Subject          Issuer           Expiration Key Identifier   Relation   
        R12              ISRG Root X1     2027-03-12 00B529F22D8E6F3… This Cert
        --------------------------------------------------
11138   ISRG Root X1     ISRG Root X1     2035-06-04 79B459E67BB6E5E… Parent Cert
11467   ISRG Root X1     DST Root CA X3   2024-09-30 79B459E67BB6E5E… Parent Cert
32023   www.de           R12              2025-11-20 C6805D052030DE9… Child Cert
32204   nemotest.ru      R12              2026-01-21 567436B4FE89A1E… Child Cert
32206   *.nemotest.ru    R12              2026-01-21 F15360A1D6254E2… Child Cert
32230   www.brazzerz.com R12              2026-01-05 566528D9B20F30E… Child Cert
32252   trustcor.com     R12              2026-01-02 214C8A5291C34F6… Child Cert
32260   *.twitter.com    R12              2026-01-24 CEC4BDD705C58E2… Child Cert
32290   x.com            R12              2026-03-09 B3065342D229548… Child Cert

Public Key Detailed Information:

Key Details:
   Type: RSA
   Size (bits): 2048
   Modulus (n): 
da982874adbe94fe3be01ee2e54b75ab2c127feda703327e3697ece8318fa513
8d0b992e1ecd01513d4ce5286e095531aaa5225d72f42d07c24d403cdf0123b9
7837f51a653234e686719d04ef84085bbd021a99eba601009a73906d8fa207a0
d097d3da456181353d14f9c4c05f6adc0b961ab09fe32aeabd2ad698c79b71ab
3b740f3cdbb260be5a4b4e18e9db2a735c8961659efeed3ca6cb4e6fe49ef900
46b3ff194d2a63b38e66c6188570c750656f3b74e548830f08585d2d239d5ea3
fee8db00a1d2f4e3194df2ee7af6279ee5cd9c2da2f27f9c17adef133739d1b4
c82c41d686c0e9ec21f8591b7fb93a7c9f5c019d6204c228bd0aad3cca10ec1b
   Public Exponent (e): 65537 (0x010001)

Public Key in PEM Format:

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2pgodK2+lP474B7i5Ut1
qywSf+2nAzJ+Npfs6DGPpRONC5kuHs0BUT1M5ShuCVUxqqUiXXL0LQfCTUA83wEj
uXg39RplMjTmhnGdBO+ECFu9AhqZ66YBAJpzkG2Pogeg0JfT2kVhgTU9FPnEwF9q
3AuWGrCf4yrqvSrWmMebcas7dA8827JgvlpLThjp2ypzXIlhZZ7+7Tymy05v5J75
AEaz/xlNKmOzjmbGGIVwx1Blbzt05UiDDwhYXS0jnV6j/ujbAKHS9OMZTfLuevYn
nuXNnC2i8n+cF63vEzc50bTILEHWhsDp7CH4WRt/uTp8n1wBnWIEwii9Cq08yhDs
GwIDAQAB
-----END PUBLIC KEY-----

Identical or Similar Keys: We found that the public key in this certificate matches key(s) recorded previously.

ID      Type Size Pri/Pub Key Identifier   Date       Comparison 
32026   RSA  2048 Public  00B529F22D8E6F3… 2025-08-26 Same Key ID