www.deltazero.cz

Issued by R3

About this certificate

This digital certificate with serial number 04:3d:d0:e9:e6:83:d3:51:54:73:32:93:2a:b7:fc:2a:63:c6 was issued on by Let's Encrypt.

With 8 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=www.deltazero.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:3d:d0:e9:e6:83:d3:51:54:73:32:93:2a:b7:fc:2a:63:c6
Serial Number (int): 369484062012908031762283211297757629932486
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: b5:57:0f:35:c6:8c:a1:e0:cf:cb:4e:4b:50:52:cd:d9:8a:90:99:8b
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 26:61:c1:f2:78:93:7f:50:48:6e:41:e6:e3:c7:ce:e2:2d:87:1c:9f
Fingerprint (sha256): bd:cb:de:91:dd:da:90:11:7c:f4:16:66:31:62:41:25:04:85:ec:fa:c3:99:d7:75:d6:e9:fa:65:a2:3a:3f:88

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

Revocation information

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

Check the revocation status for certificate www.deltazero.cz

8

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.deltazero.cz

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

deltazero.cz
itos.carpenoctem.cz
itos.deltazero.cz
node.deltazero.cz
node.itos.carpenoctem.cz
node.itos.deltazero.cz
tools.deltazero.cz
www.deltazero.cz

Other certificates including the domain name deltazero.cz

(limited to 100 certificates)
www.isipos.cz
athena.dayvee.cz
www.deltazero.cz
www.deltazero.cz
www.deltazero.cz
www.deltazero.cz
www.isipos.cz
www.deltazero.cz
www.deltazero.cz
www.deltazero.cz
www.isipos.cz
www.deltazero.cz
www.deltazero.cz
www.isipos.cz
www.isipos.cz
www.deltazero.cz
www.isipos.cz

Certificate

The complete raw certificate details for www.deltazero.cz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApubtEYfuv+xLthvElOOb
1YrHP8kZOkGpwF0b16ZCop9GZjJtCOfiOdCS4V+nJkUjCtUqZ2laa9r90MTzlQgz
L0cMN8f8x8VvnZNIyS1mw3hiaR7HBD6N2vuOZ9Yyj+G2TcNVae2CXysDxeS5Ul8d
na5ZnSALILNanPd+AOVUaWetGjfsgfWiT5FM4FjMK6b6bkAMjFhiTmiipsYy1ro4
E/opGLkSjNeR0Thk6UO1LBzid15m+/vLBq/ne4mK1CRj0B0/2AlSJBhymEIn5fUj
48f7+Rmhu9+c+Gy+QWd4qV3DtsbHKmgZ916KSmBlfpGN6JXCQwQVXPPleh5w8JHY
SwIDAQAB
-----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 369484062012908031762283211297757629932486
 . . . . . . . . [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 2023-12-19 00:51:22 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-18 00:51:21 +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.deltazero.cz'
 . . . . . . . . [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 21069432503142743434471251797420655502906019757038010572163756479876342336716325099273251945856873160195981397782158736574881307290020665176659264945318745654598479610926265253998021300637527358551507489977842774427814804184498812703128064747608632396578491416402127741409918758806699680121335718856641872752441084049274716159364411554310516258066393946085972405214709006419443289388802790352729560706625613428954123517756199549618603023443765836381590571871489776677856817928987518056933731200016426032821097691086125609751702906410002892237216766806846996810828914996066691559203664753272242060376300742491893782603
 . . . . . . . . . . . . . . . . . . . . [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)
							b5570f35c68ca1e0cfcb4e4b5052cdd98a90998b
 . . . . . . . . . . . . . . . . [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 (164 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'deltazero.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'itos.carpenoctem.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'itos.deltazero.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'node.deltazero.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'node.itos.carpenoctem.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'node.itos.deltazero.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'tools.deltazero.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.deltazero.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f100760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018c7fc53f110000040300473045022100c1bc2f8890e002d2d91bc9778a0272c0461ba050b00e1e910e25a45701bbd3fa022004f953ce198dacd4d914b5ef25ec8434877796b5f58c99b508f084cc176423f1007700eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018c7fc53ef20000040300483046022100cd95dc68467a5a1b2d0a81132c67441218746c1761877746212b5cf62362e5b002210087b79d6af1e549d76f1f106823c92c3018118fac6388dfaaa6b4c5391cdfd310
 . . . . [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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