DV SSL/TLS Certificate for cu2010.ru

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the cu2010.ru DV SSL/TLS Certificate

This certificate with serial number 06:d7:da:8b:0a:47:c5:bb:7f:10:77:08:db:b4:16:dc:28:ba for cu2010.ru was issued on by Let's Encrypt.

With 2 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 cu2010.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:d7:da:8b:0a:47:c5:bb:7f:10:77:08:db:b4:16:dc:28:ba
Serial Number (int): 596124918119418188316839146990646746425530
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 30:2a:82:c4:35:a8:d0:bc:1f:5c:f4:b2:88:db:83:13:f3:ca:f3:96
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): 7b:13:fa:00:b6:5e:20:cf:d2:67:72:b9:97:33:f4:56:1c:05:ad:86
Fingerprint (SHA-256): 49:63:d3:3e:9c:fc:32:9e:d9:0a:da:27:76:fc:f4:d5:5c:2c:fa:b4:44:62:6c:c1:1c:95:18:f8:7b:89:7a:d0

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

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/59.crl

Check the revocation status for certificate cu2010.ru
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for cu2010.ru

Public Key Algorithm
RSA
Key Size
4096
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
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 cu2010.ru in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 596124918119418188316839146990646746425530
 . . . . . . . . [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 2025-05-17 02:47:28 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-15 02:47:27 +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 'cu2010.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 694174069397771944320893514488103335384667051892853257363022612010525517351684099736112602296745172106014319859891272551876013362521233342807393843001382641844313273516310633101621521410311404857259009234510472448357023171883557963215321346959048758079904308281809539620564822880028572336687498986733346210468058590247606305909037978285397799550350141531042716521457263380621532825177399863102511334124443009346266032080057566587714105292975907928569682097732889776768683041474667146192786298961694151860968663079892898863857359102995535221521562650519026093320319763040655761442839058982226559235127185228164952743070618603819488100046941064882624509232688718298014260448296203795723956429922117899776581990722786673621153804457943274010149505527798855117044258556326121999612677273331383226150209781721304416912908411601001847793535667020687500958833677868842421734523568561845542574834551366466807606599034151908508765175002986769299931203277767560560763016127541403205432335537300505178979253501750216778869145368066181481069257389111875741932877090984482980159637415701886994436679099274013916406710848683717042561824307389798917875985698372582956231833855662506109040633739587444560305093988743570095670680870613868152931737239
 . . . . . . . . . . . . . . . . . . . . [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)
							302a82c435a8d0bc1f5cf4b288db8313f3caf396
 . . . . . . . . . . . . . . . . [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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cu2010.ru'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.cu2010.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/59.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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f20077000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa3400000196dc593fed00000403004830460221009d4de82b8d2144aaa83942ce10eb308170fe5c9482ee93654c4a02aee4718dcf022100eb954bd2fd2f632fb9bb32469eaf4429ee8e98ff2f8e63f5cc1b3a0faab9f5f2007700ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db000000196dc5947cc0000040300483046022100842ee58e0de5e08e6e1c3577f6c044cee6ac2af6126cabe2cf83b4377be5a6020221009a029a0006a92229c89b9525a9d017ad6b9e7516916c2b6ede07ce27430a6ad5
 . . . . [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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