www.deltazero.cz

Issued by R3

About this certificate

This digital certificate with serial number 03:aa:8c:c3:ad:b3:01:70:58:96:24:ee:7b:bd:d9:38:45:10 was issued on by Let's Encrypt.

With 8 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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 will expire on

Certificate Details

Serial Number (hex): 03:aa:8c:c3:ad:b3:01:70:58:96:24:ee:7b:bd:d9:38:45:10
Serial Number (int): 319371968112176729067071319465947517437200
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 20:86:b9:2a:52:ea:9f:d5:47:1e:77:0f:1c:90:48:ab:d6:8a:93:d2
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 4a:d8:ad:33:68:a8:a6:76:18:76:66:7d:c2:5d:77:53:bb:fd:29:3d
Fingerprint (sha256): c7:72:7a:5d:3d:c7:09:6f:09:c7:45:f5:fb:54:21:96:13:85:bf:1b:ec:43:b0:5a:f9:32:be:b9:41:39:6f:e2

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArHzOGUioR6fHV6VhMgED
MgsgU+/DRLxyc5wZ7R9toqaUam0weg8vbkEaKJ/Iy+EJ/mx/EO+jQ4z2zIdkcwg5
CZoNUTyshCJ9TMqoWzMecGPeGwEKcCr/qsAQUVPWGAce+zcjpylkYvncT1Tj+DZC
jr6X//iUopbEXTuyEs0vbfWz1Vymkw1HzMOU3MOIKagVaT/0WfuDBjCDU1rw1egb
Z+8LgTbM/2x1Bc//oxszG32DNpkMXFmJpmv1wSRT0t6iq/NQI0mQyiML6wz0uqjI
LVv1iHYEP7+ohQ6wSPD3ReHxJcENG674/o2qBqI0UpSRKmMFhxmKXFeqRLni/8ym
1wIDAQAB
-----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 319371968112176729067071319465947517437200
 . . . . . . . . [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 2024-02-17 05:01:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-17 05:00:59 +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 21774532129570725453649457154964074246120712269398848795780775638882775541292405970589757721902521810834130344393677847522347733019640800984689298594694949881775752107306959642907325564367055759537383959499920193331164164774647567875518234415537021289631739922890276155512886118695358370021997580568877243811796294231230553703755433163493244175390779135224702955056223952982921299636191208830518334181693144312528161729039799936749289712106240446742245691201189981794676849920462440543007445362470844563958900630146696893029356499751558393671545716140289981296350848468861236051978704790645923692071075323110413346519
 . . . . . . . . . . . . . . . . . . . . [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)
							2086b92a52ea9fd5471e770f1c9048abd68a93d2
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef00750076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018db5a75ed5000004030046304402200417bd7ce4f00248e51ef1df03cd60bc7958bb1401e6bde2661142e9ebec6154022054626926f21cf585c4908e42f74be8cd47cc4ac104455eb07ce80a84eef0f289007600a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018db5a75d8d000004030047304502202a0eba5c010e1d712c71289e6fbe38e924d33ef6b3de289602e7736b88a3cf77022100fb8a2ad38e851534b085dbbdc0f356d6010f50e036a1b87fbbbd10e3c68bb55b
 . . . . [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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