DV SSL/TLS Certificate for mail.masojicin.cz

Certificate is witin its validity period

Issued by Sectigo Limited (Sectigo RSA Domain Validation Secure Server CA)

About the mail.masojicin.cz DV SSL/TLS Certificate

This certificate with serial number a0:d9:b9:7e:3b:ac:da:78:32:25:ca:52:49:ce:fe:c9 for mail.masojicin.cz was issued on by Sectigo Limited.

With 2 subject alternative names, this certificate can be used to secure multiple FQDNs. This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for mail.masojicin.cz provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • 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)

Sectigo Limited

Organization: Sectigo Limited
State / Province: Greater Manchester
Locality: Salford
Country: GB

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): a0:d9:b9:7e:3b:ac:da:78:32:25:ca:52:49:ce:fe:c9
Serial Number (int): 213806969990882332129884360807744995017
Serial Number Length: 128 bits, 16 octets

Subject Key Identifier: ab:34:a6:f8:74:90:52:a5:22:c3:76:92:56:cc:7f:ac:52:ec:03:9e
Authority Key Identifier: 8d:8c:5e:c4:54:ad:8a:e1:77:e9:9b:f9:9b:05:e1:b8:01:8d:61:e1

Fingerprint (SHA-1): c9:39:c8:fb:73:42:19:3c:f8:2e:09:54:39:2b:04:67:0c:70:c2:0a
Fingerprint (SHA-256): 6f:b3:bb:4d:41:d0:1a:6d:79:41:db:fe:8e:65:ca:c9:d4:96:37:6a:58:8b:3e:84:e2:db:6c:b4:00:0b:f3:ab

Issuing Certificate URL: http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt

Revocation Information

OCSP Server: http://ocsp.sectigo.com

Check the revocation status for certificate mail.masojicin.cz
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for mail.masojicin.cz

Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Key Encipherment
Digital Signature
Extended Key Usages
Server Authentication
Client Authentication
Extensions
9
CA Certificate
This is not a CA certificate

Subject Alternative Names

X.509 Certificate

The complete raw X.509 certificate details for mail.masojicin.cz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAygb1GMTH/wEJCQHofEyM
2i/i4VqetUwjCSYNuPWs9Ia6N1mWcwR9/eZtD4wOtZ4lBJjrUgZWHJFi68rd5ZtH
wVNi6zIr/TBKXr8lCPuG/SBtZ5XyfQLLsW0TKAcDoRnZv/i5XhiJw6PHPZzTsZTR
/YbDxNsplkIpuKhrv5ToVANn8HkWVEq2WARsBivtNEeyFyas39+PTl0HRoXJYzC8
gaJyd6y5O2Wl/W5CgeTfqkkTSaiZjREkDQ9RtyTeenhbo6gm+6zQ63R2d/h8mMcw
9k1tnQWKRraCYQlEFsGoVxGquuNd64DNzvAuhzoSnHUvXiKqnNZMUaGUJo8JVH13
3wIDAQAB
-----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 213806969990882332129884360807744995017
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'GB'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.8
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Greater Manchester'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.7
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Salford'
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Sectigo Limited'
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Sectigo RSA Domain Validation Secure Server CA'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-12-17 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-12-17 23:59:59 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'mail.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
 . . . . . . . . . . . . . . . . [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 25503568429484085965714131470075795461834505510626700733223368391950225416744354645689475382180008417132770254018854927121328719475689074122042255878098013878438300467093807407264627429308189943024080699832795962714610625428110976613324757163094426124314944638027271771257377426911349973315294972634471352194330639373034535920332687671458157815091084568849499392732135032083824327603965199890176558855477398037968606268737819663220834580411746675161826473787303821381236174295336436264016930989656017249542928204877112355662693940369030558757761465065793396296469353014786095007525621739566775567897413355313240569823
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 8d8c5ec454ad8ae177e99bf99b05e1b8018d61e1
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							ab34a6f8749052a522c3769256cc7fac52ec039e
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.37
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (66 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.6449.1.2.2.7
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'https://sectigo.com/CPS'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (120 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.sectigo.com'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (44 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.masojicin.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.mail.masojicin.cz'
 . . . . . . . . . . . . . . . . [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 (367 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (363 bytes)
							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
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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