l.warnet.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:f4:94:ac:06:22:f6:3c:f9:35:be:23:8f:7a:c6:fe:09:88 was issued on by Let's Encrypt.

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=l.warnet.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:f4:94:ac:06:22:f6:3c:f9:35:be:23:8f:7a:c6:fe:09:88
Serial Number (int): 431675660198650229383321743322990132464008
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: e4:61:a9:57:04:11:36:fe:e8:43:7b:26:9e:13:81:9d:d3:27:6d:f5
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 80:cb:b9:cc:b0:d3:27:19:5b:14:37:6f:6a:a7:21:53:50:84:83:9e
Fingerprint (sha256): 86:cc:05:a1:3d:5e:ca:ed:5a:ba:7f:65:4e:b4:1b:17:dd:ab:3e:04:12:3d:a9:e8:f1:f5:1c:3f:00:a7:3b:0e

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 l.warnet.cz

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for l.warnet.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

l.warnet.cz

Other certificates including the domain name warnet.cz

(limited to 100 certificates)
l.warnet.cz
l.warnet.cz
admin.warnet.cz
l.warnet.cz
admin.warnet.cz
sprava.warnet.cz
l.warnet.cz
voip.warnet.cz
admin.warnet.cz
l.warnet.cz
*.warnet.cz
l.warnet.cz
*.warnet.cz
*.warnet.cz
l.warnet.cz
l.warnet.cz
voip.warnet.cz
*.warnet.cz
l.warnet.cz
l.warnet.cz
l.warnet.cz
voip.warnet.cz
l.warnet.cz
l.warnet.cz
voip.warnet.cz
*.warnet.cz

Certificate

The complete raw certificate details for l.warnet.cz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu8ooqKE601WO6UlJF7bD
RqlWn3WMfKd8KzzAF2Gg0jY4ejd4ij0k3AKe506K2TvK+l+kvkCwD8YOQcycNIpO
hyGQftHsLhV8TThhfr0P7gnj1AK93rlBFPTBCQnBZZSb+jWxXJX0kg1oykzG2w3u
xLSajKyIbLBoEHEIdp1XUK6or6ySYzYba+amKiu50Z10/RelC//1ZbrqL4+wRU5H
ByQEID2wAM8s9iMV9z22PYG8HOPjZMpkIirYWhd9ATf9yFFd6TOiTDW6zoXy9TqK
ow9s0lZwS2UnzdVoKEeWGz7whVEsSr58A4a+uceaDFZ6IEsND2tVo8LWww3o2b1E
MwIDAQAB
-----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 431675660198650229383321743322990132464008
 . . . . . . . . [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 2019-02-03 03:51:49 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-04 03:51:49 +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 'l.warnet.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 23706251259748222318158679378940543905003420360727786784798072905742325317573543975162157247952329618615544385164929508614482517550089857604911010605219758755319462009066154051562440660980802243177692716504732835945501277639472805058776230479989028108107640963652508699909899720795286774963673273935292688114889274270223674779567857589976279284082106349457844748566647127830512344162880786389050133190315259110265248355747497576251139941104955285244676981731065281224315717574509838056680895301110957929371363788035513728987056911537510545205793942592654668663439323730797800304608490301198806221170722607790273938483
 . . . . . . . . . . . . . . . . . . . . [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)
							e461a957041136fee8437b269e13819dd3276df5
 . . . . . . . . . . . . . . . . [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 (15 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'l.warnet.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 (69 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe00000168b1b2c5680000040300473045022100eca514cb477124ef05f9cda4cc2b9ef43643b9744d7c2c81e5c754708417b74e02201cc9fda3632c07184eaa56c679f642ce70b8ccbeb4d6a1d4b282bd6d267b265f00750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d00000168b1b2c56e000004030046304402201594c1cde71d507c616d52080854b29c2cf90de4399c6e0a960b6018a83ca33a02200a3a1ba2ea9d4a407e64d32406a4036f67f58d3984f7d795abfd3e441b804476
 . . . . [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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