Certificate Summary:

Subject: YR1
Issuer: Root YR
Expiration: 2028-09-02 23:59:59 UTC
Key Identifier: 1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB

Download and Install

Received at FYIcenter.com on: 2026-06-19

Certificate Detailed Information:

Name:
/C=US/O=Let's Encrypt/CN=YR1

Subject: 
   Common Name (CN): YR1
   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): Root YR
   Organizational Unit Name (OU): 
   Organization Name (O): ISRG
   Locality Name (L): 
   State or Province Name (ST): 
   Country Name (C): US
   Email Address: 
Valid From: Wed, 03 Sep 2025 00:00:00 +0000 
Valid To: Sat, 02 Sep 2028 23:59:59 +0000 
Serial Number: 0xA20253F15F2691C05DC1CE13B9BCCA4E 
Hash: 2f8a4f35 
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 Server Authentication 
   basicConstraints:
      CA:TRUE, pathlen:0 
   subjectKeyIdentifier:
      1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB 
   authorityKeyIdentifier:
      keyid:DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
 
   authorityInfoAccess:
      CA Issuers - URI:http://yr.i.lencr.org/
 
   certificatePolicies:
      Policy: 2.23.140.1.2.1
 
   crlDistributionPoints:
      
Full Name:
  URI:http://yr.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   
        YR1              Root YR          2028-09-02 1F2F35BE461482C… This Cert
        --------------------------------------------------
32438   Root YR          ISRG Root X1     2032-09-02 DEE75B60D0226D4… Parent Cert
32434   x.com            YR1              2026-09-11 A26E621E411B39F… Child Cert

Public Key Detailed Information:

Key Details:
   Type: RSA
   Size (bits): 2048
   Modulus (n): 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   Public Exponent (e): 65537 (0x010001)

Public Key in PEM Format:

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoVi8X2xCYgMXvJxNPKp/
oF13UMgmPABB07VCLNDtoXmt9luEZNJSBV10VyT1Pz6LD8Zq1d2gc43WNl1AdRrj
4sEnazbOiz0nPpmGBp2hui49oZtDIY6wdKeZAi5BbNU20CH6RSBBMLSQ9cXrH8dx
dv4PAJ45ssGML68USE3BsjC2a6cAN9L5CgXVIQi5tfNiTPoFZZ3S0OlXqLmmtdV9
5udWAb5b6e/F49DiCsH0Y00Ag72BVIb1hzynmKe+X0mERBTtsb3BwmpV9ipeBjML
oR/D9cHxHQCWoi5lTmXwY015J5rGelz1nZjJuxc2kioaX29XJBnhMkP531rSdG5u
MwIDAQAB
-----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 
32437   RSA  2048 Public  1F2F35BE461482C… 2026-06-19 Same Key ID