DV SSL/TLS Certificate for unk.adv.br

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the unk.adv.br DV SSL/TLS Certificate

This certificate with serial number 05:89:1f:7f:cb:ff:1c:99:36:b5:d8:54:e5:a7:86:cc:8f:cf for unk.adv.br 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 unk.adv.br 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): 05:89:1f:7f:cb:ff:1c:99:36:b5:d8:54:e5:a7:86:cc:8f:cf
Serial Number (int): 482221983554081350829484800059571989942223
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 21:9a:48:8a:18:bb:0d:8b:ae:fd:57:5d:d7:02:3d:f1:05:95:ae:89
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): 93:d0:09:d4:79:4c:2a:1b:a4:33:59:b9:e8:97:9a:38:b5:11:00:09
Fingerprint (SHA-256): d4:e8:44:4f:65:00:e2:e6:18:7a:c9:9e:07:04:a1:fb:b9:4e:71:bf:da:01:ee:a6:b4:70:35:54:63:f4:fc:cc

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

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/80.crl

Check the revocation status for certificate unk.adv.br
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for unk.adv.br

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 unk.adv.br in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIE/jCCA+agAwIBAgISBYkff8v/HJk2tdhU5aeGzI/PMA0GCSqGSIb3DQEBCwUA
MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
EwNSMTEwHhcNMjUwNzA4MDIxMjQxWhcNMjUxMDA2MDIxMjQwWjAVMRMwEQYDVQQD
Ewp1bmsuYWR2LmJyMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1Rz5
3OT72axyGRLIfa14+uVXkCtZGBg/LXHk089xsqeR4OuJY3ONGBap0tor0L1GpvBc
FdI6QxJkOuABFlkUUqWBLyh0eUvm8FppBFKaNb9PAbX2UwY/CmNXUNgzJDBpuRik
eri5enFPULr5bps2NhaUNkn4qXzJ2iQQE4zF6TTAiYSndsNRxCAdLisEJk7mgxFe
EiVb1xTfZ6LpnsYjW07+FN7Ufth2J3UGU2sPW5RLhFmlMxeGNb+oL9DI7VKt/oKx
ya03W+6bimZ+lT4OKA1E/CF8jnFLREyk5DYt7yPRz1JyZ8eTani+1527uRIee2E2
l+UTGa/MWruCPuhKZwIDAQABo4ICKDCCAiQwDgYDVR0PAQH/BAQDAgWgMB0GA1Ud
JQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQW
BBQhmkiKGLsNi679V13XAj3xBZWuiTAfBgNVHSMEGDAWgBTFz0ak6vTDwHpslcQt
sF6SLybjuTAzBggrBgEFBQcBAQQnMCUwIwYIKwYBBQUHMAKGF2h0dHA6Ly9yMTEu
aS5sZW5jci5vcmcvMCMGA1UdEQQcMBqCDCoudW5rLmFkdi5icoIKdW5rLmFkdi5i
cjATBgNVHSAEDDAKMAgGBmeBDAECATAuBgNVHR8EJzAlMCOgIaAfhh1odHRwOi8v
cjExLmMubGVuY3Iub3JnLzgwLmNybDCCAQQGCisGAQQB1nkCBAIEgfUEgfIA8AB2
AH1ZHhLheCp7HGFnfF79+NCHXBSgTpWeuQMv2Q6MLnm4AAABl+gEF0QAAAQDAEcw
RQIhAKesRpPg5Qmg/qLZviX88Iw9n3OuPp2TeYMLYkS5Xih2AiAvAzwJd4bPaNy8
/Bxo15wZy/34D88XDPXiwSOtHw54wQB2AA3h8jAr0w3BQGISCepVLvxHdHyx1+kw
7w5CHrR+Tqo0AAABl+gELroAAAQDAEcwRQIgKZ2eBIQsDsL8OUxFLwGp26h2+Hhp
SaVSmFQiGiZip3ICIQCjM7GnaLvP8JECS5aPWh7MmhS3YuYoXLtQouOSpjm88zAN
BgkqhkiG9w0BAQsFAAOCAQEAlWy/5v8DO370HyUqfWEoGJJflqEEEUXzPN8ocr7d
5EFigDVmEWVAce50sGDBdsW+b7h1FhFyBctLCAfzbrELaX4RQoP1xlj7/TNk/4Dn
/dYIf2LVByUAjXhARV3TsyRpE8LJLAyLru87e2XUaJS/nI+qln5jy6E86hWSCo0Q
HZP8wK5HHR5r7EWuu1LcoJn4UP14Tr+925AVApnm2vhiz686m0CkTqeXM/TP3iDp
Rztuix/hNhuRPw/K8KeaBC1Z9V8C3BnKghPOL5uydOYz9fiYHkYmuRSqp6U/dGAR
mdhkVZe2MUjLWx61kU29c+RXGEBs29UKOki8stGlM/whuQ==
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1Rz53OT72axyGRLIfa14
+uVXkCtZGBg/LXHk089xsqeR4OuJY3ONGBap0tor0L1GpvBcFdI6QxJkOuABFlkU
UqWBLyh0eUvm8FppBFKaNb9PAbX2UwY/CmNXUNgzJDBpuRikeri5enFPULr5bps2
NhaUNkn4qXzJ2iQQE4zF6TTAiYSndsNRxCAdLisEJk7mgxFeEiVb1xTfZ6LpnsYj
W07+FN7Ufth2J3UGU2sPW5RLhFmlMxeGNb+oL9DI7VKt/oKxya03W+6bimZ+lT4O
KA1E/CF8jnFLREyk5DYt7yPRz1JyZ8eTani+1527uRIee2E2l+UTGa/MWruCPuhK
ZwIDAQAB
-----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 482221983554081350829484800059571989942223
 . . . . . . . . [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 2025-07-08 02:12:41 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-10-06 02:12:40 +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 'unk.adv.br'
 . . . . . . . . [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 26903047569145229626644756111733557812256255402030830663184930707234597838556122766161885169855879704467046592199343269796869166200693420294280225494765395535126109754337134349897495956837917148786302360373800141023148203646323979204815173735749006072329795627849555265374890130611543818952723891850727224161337686635756365961546934318254147724882346357125787368248201951756818610942991895943656153528210711448851543450185223197360358958318299655582075269250999959851489599933208313240836753276544734066497073370294136903787936442932462375876851334861165948529850608472597261522511571998785129189800917885555789285991
 . . . . . . . . . . . . . . . . . . . . [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)
							219a488a18bb0d8baefd575dd7023df10595ae89
 . . . . . . . . . . . . . . . . [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 '*.unk.adv.br'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'unk.adv.br'
 . . . . . . . . . . . . . . . . [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/80.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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00076007d591e12e1782a7b1c61677c5efdf8d0875c14a04e959eb9032fd90e8c2e79b800000197e80417440000040300473045022100a7ac4693e0e509a0fea2d9be25fcf08c3d9f73ae3e9d9379830b6244b95e287602202f033c097786cf68dcbcfc1c68d79c19cbfdf80fcf170cf5e2c123ad1f0e78c10076000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa3400000197e8042eba00000403004730450220299d9e04842c0ec2fc394c452f01a9dba876f8786949a5529854221a2662a772022100a333b1a768bbcff091024b968f5a1ecc9a14b762e6285cbb50a2e392a639bcf3
 . . . . [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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