alpstark.ch

Issued by R3

About this certificate

This digital certificate with serial number 04:b1:47:57:2a:00:91:26:a7:98:58:e3:3a:0b:9a:3f:25:73 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • 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)

Certificate Subject

CN=alpstark.ch

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:b1:47:57:2a:00:91:26:a7:98:58:e3:3a:0b:9a:3f:25:73
Serial Number (int): 408773950441480641586913666942023615063411
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 14:bc:94:68:a4:38:5e:70:ea:7d:4e:8b:dc:a8:f4:26:f1:cb:77:bd
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): fc:b5:5d:be:93:17:74:06:98:c3:68:0f:b7:18:c5:da:9b:9f:53:bd
Fingerprint (sha256): c0:32:e9:28:19:44:f3:60:56:75:47:55:82:7b:3f:2e:9f:eb:16:ca:c9:c0:fb:76:3b:bc:d8:08:57:78:c0:67

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

Revocation information

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

Check the revocation status for certificate alpstark.ch

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for alpstark.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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

*.alpstark.ch
alpstark.ch

Other certificates including the domain name alpstark.ch

(limited to 100 certificates)
alpstark.ch
www.alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
www.alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
www.alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch
alpstark.ch

Certificate

The complete raw certificate details for alpstark.ch in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx6G2tQeaOveO+XyjzXNf
43wAwtxn0bl1si617h/8QbaE7TpIFtNvmqScb41pBq6+D30vPO7zzZF5YkDuKeQG
bXD6gYXGU1SysgjeUjDKfISlMLeUH/Qo5eY4VEjkP8VsOBXIsjsWw9Ct/PVMQf/F
bNDZydk7dLE6PzPCz1qvObig4MCcL4L3ngbfnDA9D9MgSx1BWVy2SloOZvsv0oye
mMH0gN811LUpyRbG3FDVmLGFuLjbpmXFmfSca+7DBTlviMnayreASFOLJyex01pP
f5Ky4M0RkxnREVK+eYSHxz+IxZx2FnARHZ9C79x75FITYB8UpnSiELCL3Xv+SnGS
zQIDAQAB
-----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 408773950441480641586913666942023615063411
 . . . . . . . . [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 2023-12-19 11:02:56 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-18 11:02:55 +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 'alpstark.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 (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 25201166685713555963118010158965721355383022670976915695872395062533992343486102313115113108839604458756087335034059173467045922766368021659187390994502355598375078438459138490809133923140549084943291781241647826539062532237286810956543971913407542100729513703308987779990530595409134751806989964120675495723078531523944277413142008440413367953835748010270026503595485264229376359914341506142530051139885146460518352121638389026779136999466195520099458809140634458858329334784669811573939982937394282970455652539497245268838910261018417991145747387401684357291666353198585239943188341880033328650681189468464575779533
 . . . . . . . . . . . . . . . . . . . . [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)
							14bc9468a4385e70ea7d4e8bdca8f426f1cb77bd
 . . . . . . . . . . . . . . . . [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 (30 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.alpstark.ch'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'alpstark.ch'
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018c81f52932000004030047304502206ee58fd8995480ac1eaeab7be117705d85027431982b9716d9ce793c13e89f20022100a181fb16197348417fdbeef11de5e21ad6c0d95482196c4a9ccf986eae35cf590075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c81f529340000040300463044022039983b9e8dfc1ca17f5d7590a7860d21c4ba32fe8b0651553f29619bb1225956022054d626ee8bcfb7ae7b7e4872a7fdee8483efea4b3103f21e6f3faafb552da1aa
 . . . . [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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