dev.gertsnel.com

Issued by R3

About this certificate

This digital certificate with serial number 04:d7:b3:38:b9:f4:e4:1e:dd:70:c2:54:14:8f:9c:3b:97:0d was issued on by Let's Encrypt.

With 3 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=dev.gertsnel.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:d7:b3:38:b9:f4:e4:1e:dd:70:c2:54:14:8f:9c:3b:97:0d
Serial Number (int): 421848078966560382347494530587351632811789
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 3e:66:2b:10:64:92:d2:da:f8:32:3f:b3:3e:bf:00:b0:6e:03:da:75
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): ec:f7:10:d2:e9:e5:12:cf:d5:e2:2b:cb:8b:22:18:c1:89:dc:c1:18
Fingerprint (sha256): b8:0b:50:5b:61:15:a6:35:83:73:09:2e:d9:ca:1a:c1:cc:ea:14:5d:aa:93:c5:91:d7:98:98:e6:48:02:50:5e

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

Revocation information

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

Check the revocation status for certificate dev.gertsnel.com

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for dev.gertsnel.com

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

dev.gertsnel.com
gertsnel.cz
www.gertsnel.cz

Other certificates including the domain name gertsnel.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for dev.gertsnel.com 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 421848078966560382347494530587351632811789
 . . . . . . . . [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 2023-10-16 13:01:31 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-14 13:01:30 +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 'dev.gertsnel.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 880327189305664291007639942046151151174462514844133020409673516363014014272880175871003346656698179413935641687471988038428682742607609189236513316419756758622517312692966366102826145253964315885264194060515439073491842330113910151121635706331995094258937805194573427331086932052920733331614831507472822011161124257078169753486761998987822965495949716466663401972065264367063780533564366622141193588816932791694171668650187699441288763742520472400024188659622607257341768789053402530657540255241609595664385161596664256021831862245055660610606628802017577765235353956071793117989105295332967489750217599673504141637158540877853824822781419943122302544182492214601944992472843436613380274771754168170437082726028093037909208465538007335007157681653451574540409556355758788655699304307982420315547750486162057548566982134343027736445677354793847792515997132294492894713643764515788358127323038879299188441227963185338644602172755338030587058173456150874579474888701273873284569098748667331181765881565698223548690892324625943922251868007396374652656037865737161277314060806524705680231405061819765413984541284360228641866114678141581852506223131861305961638355187972027648393221221520025768647345606406250559302715889995949856902866809
 . . . . . . . . . . . . . . . . . . . . [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)
							3e662b106492d2daf8323fb33ebf00b06e03da75
 . . . . . . . . . . . . . . . . [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 (50 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'dev.gertsnel.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'gertsnel.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.gertsnel.cz'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007600dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b38cabb0d0000040300473045022100dc63195aa79ef37c8016fac3af603d8c1e0b0021f7b42258249d285dbd6127d202200bd277849b0419921a63b5cc6be37b9eecadab1b87356a548ad8932e4be931840076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b38cabb0300000403004730450220752983dd812c2a49005227ba3a22921a4e179db0f080402a6ad5472d6ddd3ee9022100fbd9d422a0ed1c9b8996437c342aa5ccda7e21ec1c6e78b7dd3c0929c9d74177
 . . . . [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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