www.masojicin.cz

Issued by R3

About this certificate

This digital certificate with serial number 03:60:37:56:82:9e:c9:06:ea:98:a5:a8:d7:72:89:f0:a1:4d 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.masojicin.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:60:37:56:82:9e:c9:06:ea:98:a5:a8:d7:72:89:f0:a1:4d
Serial Number (int): 294077521746282349800890951449958924984653
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: eb:ca:cf:75:7d:11:3c:79:20:75:54:5b:48:ef:6d:a2:2e:d8:db:df
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): f8:01:80:a5:c1:fb:a0:39:b1:d6:ab:f0:98:19:13:71:ec:88:7e:7b
Fingerprint (sha256): f2:4a:df:12:e7:ee:26:f2:a8:af:a8:be:54:1f:7c:c8:fa:fe:77:9a:89:61:05:47:f8:d7:10:24:c8:ba:7a:46

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

Revocation information

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

Check the revocation status for certificate www.masojicin.cz

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.masojicin.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

masojicin.cz
www.masojicin.cz

Other certificates including the domain name masojicin.cz

(limited to 100 certificates)
mail.masojicin.cz
mail.masojicin.cz
mail.masojicin.cz
www.masojicin.cz
www.masojicin.cz
mail.masojicin.cz
www.masojicin.cz
mail.masojicin.cz
www.masojicin.cz
www.masojicin.cz

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA099hhizEe94UZ8wDsy7b
/cDwkZ1J71gzsmujexi7mLz7uW/yixFlX0P3tpNBmHQ7yt6gzc1ERBgVahhHvzMD
B5kJlNuDd8I3DfbL7CBT3kIr2P/LVo+MsKWXNQb6DJj5ABkdXUSj67GxF/AJ/26j
i9Hc8xlRriwkYrDqseOFzDDTqC/joZoTAF7ZAlUUmxAw0LO5Jp369ZsFTMcK/CQe
7KR67YZ8d8V2HENHbQwNoN3yZELGW6fW7zXhDY/iHwHuf0yTDQ0Z2lYnFLdRa9LT
dM+W8CMdmBZSIEpwO+J/0cGntpoZqFGo1wpi0nZSyI+KMrA+GrIQVUPkfT6ZK/1a
NQIDAQAB
-----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 294077521746282349800890951449958924984653
 . . . . . . . . [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 2023-08-20 01:21:02 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-11-18 01:21:01 +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.masojicin.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 26746435601524586955750522724456228602024022590498321796908010744184101739848293183468307834492361223996797249870810302964827177604725211313517572264261593531789711272594967729492042465673699537929880073573465118867810873892901339128100278349277481876081921856491169257269437155738894595756839596552130042462319676997451846032910313033184766545889197969576249939213551897310406247823402818475071385573847628337680842524512642027189346197990888818832229048050318792333413958412753306230761916691261068036428229304894010892497465324797793576790371654527933370834353106217731819904851271085490246360995761814886984538677
 . . . . . . . . . . . . . . . . . . . . [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)
							ebcacf757d113c792075545b48ef6da22ed8dbdf
 . . . . . . . . . . . . . . . . [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 (34 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'masojicin.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.masojicin.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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f2007700b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018a10beebc70000040300483046022100f37240c97e6fd33e13d3c539cfedcf21fbec05de5ac96543e587d23265071f08022100f2c365551a68ce7af798b71131c8b39cf974f566f7d86c94717ee47e13deb9c2007700adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a0000018a10beec0900000403004830460221008882660e74c0f5d1b94850a7def010e37e8d07fde508ea6004b8d4b0576b0e53022100d0fe18cc328eb7d971bf74c08e9e54c52acdf29a3391e9f0eede26e0d19da22c
 . . . . [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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