learning.zu.de

Issued by Sectigo RSA Domain Validation Secure Server CA

About this certificate

This digital certificate with serial number bf:f4:f5:55:5c:11:53:03:01:8b:b4:1f:15:53:fa:08 was issued on by Sectigo Limited.

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=learning.zu.de

Sectigo Limited

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

This certificate has expire since

Certificate Details

Serial Number (hex): bf:f4:f5:55:5c:11:53:03:01:8b:b4:1f:15:53:fa:08
Serial Number (int): 255154443581641702692078038227403143688
Serial Number lenght: 128 bits, 16 octets

SubjectKeyId: ed:59:e7:5c:8c:66:03:16:13:5a:72:1a:0e:7b:27:19:5f:c7:bf:15
AuthorityKeyId: 8d:8c:5e:c4:54:ad:8a:e1:77:e9:9b:f9:9b:05:e1:b8:01:8d:61:e1

Fingerprint (sha1): 06:56:74:b7:c6:41:79:ba:c8:a3:45:eb:d8:46:df:f2:6d:9a:6d:81
Fingerprint (sha256): bc:65:76:8a:1d:63:8d:29:11:00:d0:27:ec:d4:a6:ee:4e:be:e6:5d:73:11:28:06:9c:61:5e:69:ce:0e:3e:07

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

Revocation information

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

Check the revocation status for certificate learning.zu.de

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for learning.zu.de

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

learning.zu.de

Other certificates including the domain name zu.de

(limited to 100 certificates)

Certificate

The complete raw certificate details for learning.zu.de in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAs+LYk3pL35goGqsburJ4
64nn7CskFQcwtGExErfTmXkK7akvEnlDgzFqTFOX9s7BElVAEeOAP7MZxzwpIViS
oBm10PRwjUfKNlF7Zvlf/fzN9NaSndpvYCbqp69g2UQmYDwHuESlyBkELP7NFApg
xIFsRyCWoHSeNDiQ2W6KFIbbemrfDADm8JRuy585k2wMBsXTCnVJICKwpsGvglaL
WSuoIizSDIVPp1fl5VVFlasmONp22kl3a0XDbLcOZWUagsYbvix82s5I7EXBGvGb
0hmfSkLqtVOYukN2nhuWM7zAG66qr+ZbBdC8z4LDN7wQcLW53EkFErebqrjDDzTm
fQIDAQAB
-----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 255154443581641702692078038227403143688
 . . . . . . . . [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 '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 (stateOrProvinceName)
 . . . . . . . . . . . . . . . . . . . . [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 (localityName)
 . . . . . . . . . . . . . . . . . . . . [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 (organizationName)
 . . . . . . . . . . . . . . . . . . . . [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 (commonName)
 . . . . . . . . . . . . . . . . . . . . [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 2022-11-28 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-17 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 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'learning.zu.de'
 . . . . . . . . [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 22708518520839216050583758662054150693961161098627501041419864462292569143328277711514408374084171339353397771368487951725021252214889496757969446427223916842126904654466265652158611795453944498273172046670254347331767091181652726072658453359400142909310718251946636819868114346231995815926045379417816401124671835217268063060033490941311807202978294853776098277535594929910401986867077835170675695912163837401146798560948021806998080377818590894601065753428171483450086768583156709738921803648532507070012752396246549354941813695328172328841290007039050949873433875599632659228024141517843673354490702620835362170493
 . . . . . . . . . . . . . . . . . . . . [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 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [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 (subjectKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							ed59e75c8c660316135a721a0e7b27195fc7bf15
 . . . . . . . . . . . . . . . . [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 2.5.29.19 (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 2.5.29.37 (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 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [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 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . [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 (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 (caIssuers)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 (ocsp)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (18 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'learning.zu.de'
 . . . . . . . . . . . . . . . . [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 (366 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (362 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 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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