www.projektyporsenna.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:04:84:07:44:9b:42:6a:ea:1c:fa:12:6a:b0:5c:fa:0a:54 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=www.projektyporsenna.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:04:84:07:44:9b:42:6a:ea:1c:fa:12:6a:b0:5c:fa:0a:54
Serial Number (int): 262873483095990885933119833671322740329044
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 28:f5:4d:37:17:94:38:5a:b3:11:8e:a1:56:8e:e5:86:13:9c:74:c5
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 41:94:55:3e:08:d5:80:86:96:3a:41:2f:f7:8a:d8:32:49:03:a8:ad
Fingerprint (sha256): 00:0c:6f:7c:71:d2:2f:06:61:58:ad:46:47:e5:99:af:e3:18:93:38:93:24:f9:b5:28:f0:de:8e:d7:9b:90:60

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate www.projektyporsenna.cz

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.projektyporsenna.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

projektyporsenna.cz
www.projektyporsenna.cz

Other certificates including the domain name projektyporsenna.cz

(limited to 100 certificates)
www.projektyporsenna.cz
projektyporsenna.cz
projektyporsenna.cz
projektyporsenna.cz
projektyporsenna.cz
projektyporsenna.cz
projektyporsenna.cz
www.projektyporsenna.cz
projektyporsenna.cz
projektyporsenna.cz
projektyporsenna.cz
projektyporsenna.cz
www.projektyporsenna.cz
projektyporsenna.cz

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx05D00dotsAtF6nu0J6/
7NjmsHFxk8LjIH9BXyzOJV58MH6/sW+88i4VNsgfsYTj1WDWpl9vE4O5PqUjnSjn
gB7ufuBDOkQA74Sl3T31lzy+6608RjVBhjOeoZNYP1InBwS/j3lowxeZC8y/j9Qr
YzuNt2feUNXZcQWTVcpPS0AMkcCICighH9EUx2B5k6EX/JUmhwok9++fGJdEPUo3
JK2CGCQygY9pJEbr79EZmIWPiox8ZdM8l8rfVunEC2+bsXs1US+E51pvfdX82RrV
J/AIDyUrg3rEvZiDHYB2duLDeTWrT6mUh9hTSjpvVmYu2sKSAto96bHd6SO4yZKI
uwIDAQAB
-----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 262873483095990885933119833671322740329044
 . . . . . . . . [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 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-04-07 15:02:43 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-07-06 15:02:43 +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.projektyporsenna.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 25160016569860718840881758228841279000531363870123997448735424930688004542815274813293758699687233529085948994816628858291694804971041246784766228503529886288622655166796455148584541743307411490828054045326833698571344503970062960028510761120479120961317789370239013334193340361407714401386173829597600084661697439160356289682429237259491402219109615951339838220165502818451771453769742461361573546199792753825657884698351820636942994822424893077673251649451388422379509693577517394381156808726293566326433761783376410267597344131367146087693193840207097744509639568198127068743363193699606851780806050066001357342907
 . . . . . . . . . . . . . . . . . . . . [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)
							28f54d371794385ab3118ea1568ee586139c74c5
 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (48 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'projektyporsenna.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.projektyporsenna.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 (246 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 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . . . . . . . . . . . . . [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)
							00ef0075006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d91300000162a0d877d00000040300463044022000fa98ba1d269c8d1773b78a4847e792e5b1120e6715385f43ff8de0ec33b8d902202be89d88ed55affca98e8ae0a709531987c8ea0f6b3d364d7fcccb49914e82f3007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000162a0d877c40000040300473045022100e2d96d65a04bc05da5fe2af1ed52c37952e21d7a3422188239867f32735287ef02205371cebfcfb75bb4203add2bb12dcd95272ec9d6894fd12bdc072198c72f0fd1
 . . . . [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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