www.ubuyfirst.com

Issued by R3

About this certificate

This digital certificate with serial number 04:30:b9:a8:86:0b:23:a2:3f:90:b6:87:7d:03:45:59:d1:8d was issued on by Let's Encrypt.

This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.


We have idenified some issues with this certificate:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • 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)

Certificate Subject

CN=www.ubuyfirst.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:30:b9:a8:86:0b:23:a2:3f:90:b6:87:7d:03:45:59:d1:8d
Serial Number (int): 365029479543063900918752217952274605527437
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 63:a4:21:c8:51:67:b0:16:09:e9:59:fe:22:66:8d:99:49:af:eb:f2
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): f3:11:34:30:fb:70:63:ee:67:f7:bf:f3:70:5e:ec:8d:8b:c3:4c:73
Fingerprint (sha256): 3c:49:24:ce:57:38:89:96:c6:41:de:01:08:c5:32:c3:4d:b2:7d:a4:e6:49:f8:45:bb:88:17:09:c2:81:d3:e7

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate www.ubuyfirst.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.ubuyfirst.com

Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

www.ubuyfirst.com

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www.teresaklaman.art
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www.ubuyfirst.com

Certificate

The complete raw certificate details for www.ubuyfirst.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxSJrVhWefMo+ZIIGGUDg
HASF7NsAfZsgIkcDlfwqrImOm+a2I2c3fSZZJR2x/PMqePLp7vubEjOhkJmDGGhG
9uFYVgkzJbCr+OgrmRoooP8pUQacz1CID/84BLexJ/73rb1yxPBxll4PuXiCve5k
y91Ud0kUhDHG3NQqwhWX6+YpWH9ycXlfDnaIkhHOVPf+j/YGCjxROKeEcP6plO4Z
wN2DyXmcDUl7dtOMqrVtnBDntJzZDJxce6JsV6Xk/sG8PX45YEH7pKxRBF7XlSOR
44/FYMd3YI/Gkudty2hhBO7EN07Fuy4HE87h+x+1FLImMqHTlaj2UDe/ISVteIu7
yQIDAQAB
-----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 365029479543063900918752217952274605527437
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . . . . . [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 (countryName)
 . . . . . . . . . . . . . . . . . . . . [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 (organizationName)
 . . . . . . . . . . . . . . . . . . . . [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 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-20 02:25:45 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-19 02:25:44 +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 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'www.ubuyfirst.com'
 . . . . . . . . [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 (rsaEncryption)
 . . . . . . . . . . . . . . . . [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 24885918858997144708467647209458157047945533246661707660796231723744772481977626687105290626092954051137881537168350601752345576370601200360493352998490363042508493704241477529598798901922291273617967020695513373112988271644733786323027824375682457569483207668974698351093796962334331028057653392667500265617978775623788974625862901931818609579934922815619037244449755433997221434587532611980587984981424322864185323167998237873951429628911715445101799061836122994666997781502018176812808467633779492177441341208072802906755475940343681823012901704847297478633837142677418308104193778919919528754505630653609876896713
 . . . . . . . . . . . . . . . . . . . . [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 (keyUsage)
 . . . . . . . . . . . . . . . . . . . . [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 (extKeyUsage)
 . . . . . . . . . . . . . . . . . . . . [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 (serverAuth)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [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 (subjectKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							63a421c85167b01609e959fe22668d9949afebf2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (73 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r3.o.lencr.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r3.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (21 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.ubuyfirst.com'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [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 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . [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)
							00f2007700a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018c854205d20000040300483046022100eb519fbdb06557b656ce3fc0f55e7addf433b7d1a229e498227199a1f8f7ea8e022100d6f773219bba2024a1304d5a2b0976bfaa9cec0e085075d3e1fa9fb83d027016007700eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018c854205d60000040300483046022100cd41f4709ecb25a890b36da58c014bba6be92a3d6c170114251ad8d86d3eaf0c0221008773cb83b5342db4ed1f23ebebb1afc14a71db786c655e315827eceea5429d0a
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		004478c6f8917674a7fb6cb6cb664e4a652adbd2ce1988e350b29b9483928e1da0b1b240d9b65ae380d59d34f79d959ace9b262e2e4152333ed4756692fc8330173e5636f40b68052f6c9a6b6a70e63f711ddfe1c3d0e4741505384778fba1801517acf490f181b83af882e86a8a97477bf7f95555ee88ca917cf0c1dda45adfab716b0043bf0e6f8d6e7bb245c63d527c6780598c465f6c5cc7e957a8a3591f0aaedc4ab2b33f98d5941616f63842df90734280f0c0d7be89e9817dc96e66168bceb3a809b2a2fbd5f27c8db3930bbc1f6c62353306d250d5896d44b59a056c98f9d89e8ae1d9e937c785f5674f5ecd122456361825b1d94a2ab0b2d27c5c1d32