testcode.co

Issued by R3

About this certificate

This digital certificate with serial number 04:f1:1f:f8:60:1b:08:32:2a:5d:78:b2:0e:23:f9:0a:78:82 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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=testcode.co

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:f1:1f:f8:60:1b:08:32:2a:5d:78:b2:0e:23:f9:0a:78:82
Serial Number (int): 430499689861730424175359457797873626413186
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: e4:cf:47:eb:23:9e:81:eb:d2:7f:b3:0f:02:31:3d:52:00:b3:0f:1f
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 73:e4:f8:ed:65:0f:9c:3d:39:68:53:bb:f0:2d:32:94:11:a8:02:cd
Fingerprint (sha256): f7:f7:d3:36:c5:a4:3a:0d:10:06:f4:0b:ec:0f:e2:ec:6b:44:a1:1c:79:cc:d1:d7:b1:06:10:23:6f:6f:41:1d

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

Revocation information

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

Check the revocation status for certificate testcode.co

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for testcode.co

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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

testcode.co
www.testcode.co

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testcode.co

Certificate

The complete raw certificate details for testcode.co 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 430499689861730424175359457797873626413186
 . . . . . . . . [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 2024-02-20 10:02:10 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-20 10:02:09 +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 'testcode.co'
 . . . . . . . . [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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 989219346844229634657340270207507425631989452882377854125487964865178904653521116710588087967307359299213745515106077430097806167674057541175485616210049333556029700538270703907270480697658561440893718000828357303338696018343815289189454227988673993963804793699312856797173418659345717622883639106355317214049379978487877216279125176059149555502027629136801575039711056313678828487031117164822259022172557543506957729610609482649651074381982240364446122290904165262586073150262373586425167012616944425234860742098218905878407371989839891862368591997817547689932565368119876195947583997564058872715869754195290194562808135470723347543631177749684191145002548479528278516362642448477936183017819711581202988005242539122844522653637600984648108624986768918434958349027775980952876762122683678700680696969044864692962296217563441750879838995634850706519987149771990624270177729695974864513278860973213925515749413441986534621131350456649598518293389089765314983886310039081249080501033345146505661991905987980602630050324941205923550708087483887398941856145441279580525444461051622347631589063014646494332114284692248209743922092665507059394769706333739121015005537707817289006836580306786153607128334756098204042171682011587486208917163
 . . . . . . . . . . . . . . . . . . . . [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)
							e4cf47eb239e81ebd27fb30f02313d5200b30f1f
 . . . . . . . . . . . . . . . . [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 (32 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'testcode.co'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.testcode.co'
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007700a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018dc62e2b970000040300483046022100cc78d70b070338e2ee9d8fc455ee641b7e82e53e7daf5ccdcd78e0c38b6e3859022100f4f0a37006b4f9c635ec1e76d38c3067c0f82ee7db87ed63f79a9b3d8665311600760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018dc62e2ce900000403004730450221009e48c6e307ed22681ac2a432bf3a542bf1032f11067d9307a89aa78ba76f98db0220034036721f385b9fe236baebc93f41a840bd5eff43e177d0b5d1fbc22889fb81
 . . . . [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)
		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