DV SSL/TLS Certificate for www.e-klassenzimmer.ch

Certificate is witin its validity period

Issued by Let's Encrypt (R10)

About the www.e-klassenzimmer.ch DV SSL/TLS Certificate

This certificate with serial number 06:df:1c:75:11:25:8f:db:9d:ab:2e:1e:82:05:45:60:a8:ba for www.e-klassenzimmer.ch was issued on by Let's Encrypt.

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 www.e-klassenzimmer.ch 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)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 06:df:1c:75:11:25:8f:db:9d:ab:2e:1e:82:05:45:60:a8:ba
Serial Number (int): 598594509644322110582184159068592783009978
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 92:28:dc:6d:ef:a1:44:9d:df:64:18:09:1d:37:a7:29:ab:bd:90:c9
Authority Key Identifier: bb:bc:c3:47:a5:e4:bc:a9:c6:c3:a4:72:0c:10:8d:a2:35:e1:c8:e8

Fingerprint (SHA-1): 9d:e9:c7:5b:e3:20:85:fb:12:05:b9:15:0c:8f:c9:a3:fe:b9:59:7e
Fingerprint (SHA-256): b9:e3:2a:81:30:4c:29:c4:b1:4b:51:dd:90:02:ce:81:42:ae:cd:9d:e1:7d:60:1a:9d:bd:01:81:8c:6a:8c:84

Issuing Certificate URL: http://r10.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r10.c.lencr.org/59.crl

Check the revocation status for certificate www.e-klassenzimmer.ch
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for www.e-klassenzimmer.ch

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
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

www.e-klassenzimmer.ch

X.509 Certificate

The complete raw X.509 certificate details for www.e-klassenzimmer.ch in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0MPYM2O+OkakMIv1kgjT
yre/4ebqNxx8l7twIQEQbIvfjON6wfYeit2WA80DNaaEVSkteXT80oBHP0z/7QDg
LI62YiocNSE0iUhzihvJvbLyxrNrj+FfyUy9UwQOOsLHVuGJdTof5/bIJnocf/XH
bD0JPfPfaR7NoIFvasH8/RObKVAS09H5eozP+pyqtELhd+64akXkUZxOe3Ce9CWk
p+5UjBbJc2K2wLmuAE8xSGBxZ3A9GYvEh8kHoEjLhr8mmrpgvZVX1ApjVr/kuUmc
yg0ig3fuoPbNPU7bKOTP2H/2HV1rQnz6B9nEhdmOri99y3QwLfuBQMEYuitelzzv
EwIDAQAB
-----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 598594509644322110582184159068592783009978
 . . . . . . . . [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 '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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R10'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-07-10 15:46:25 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-10-08 15:46:24 +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 'www.e-klassenzimmer.ch'
 . . . . . . . . [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 26354141972108667284539152325613054365275646431482634831256560538078775139777433702451887696400593816794653676244696398343500722605607876966989017180130999843800250808036175993907656181400893495891213799752618798359403587936730190340864554845623607335780404191883312348482266039472411163587884630373126043336517257317036513127888701187247173375690803017820129201243820023776804951246991853792075616699130692842476303603227786155384107898093163300643018000371026225772668513276780688617398885769861054499510486674432371447497269521679222127784707257995521752954558682877611652132189658762007646539072246154431244857107
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.14
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							9228dc6defa1449ddf6418091d37a729abbd90c9
 . . . . . . . . . . . . . . . . [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 bbbcc347a5e4bca9c6c3a4720c108da235e1c8e8
 . . . . . . . . . . . . . . . . [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 (39 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://r10.i.lencr.org/'
 . . . . . . . . . . . . . . . . [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 (26 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.e-klassenzimmer.ch'
 . . . . . . . . . . . . . . . . [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 (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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r10.c.lencr.org/59.crl'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00076001a04ff49d0541d40aff6a0c3bff1d8c4672f4eecee234068986b17402edc897d00000197f539cce6000004030047304502203ca1438a18e1c3ae9872a42a6f1a7f3cc3e851a626918f0d1f516e947341cc8702210085f94fa4cdb2415e58f957e78a94139e5d469c4f38e64cc33aca33fab01457cd007600ed3c4bd6e806c2a4a20057dbcb24e23801df512fedc486c5700f20ddb73e3fe000000197f539d49900000403004730450221009081f2949d008b5edd646dcf1ff482f03456ccbe5e756cd95dddecbb14c54ab202201b8d45d0a40b4c78035a899d2ad30c5d70e5242e3672c8059baeab50b9e45312
 . . . . [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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