peyker.de

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:52:c1:54:5b:d2:98:44:6d:bd:f4:81:89:4a:1e:f3:7d:3b was issued on by Let's Encrypt.

With 4 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=peyker.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:52:c1:54:5b:d2:98:44:6d:bd:f4:81:89:4a:1e:f3:7d:3b
Serial Number (int): 376609276833064858786471644639826669698363
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 63:ad:45:6f:c9:cb:78:10:19:51:e3:a5:85:46:d2:01:ed:c8:de:c7
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 76:ba:41:80:f7:a3:d9:f3:af:d3:52:8c:6e:fb:ae:9e:cf:c8:2e:78
Fingerprint (sha256): 28:46:aa:7e:4f:56:68:f3:94:a3:22:56:bc:46:f1:29:d1:e2:a6:48:41:95:ba:39:8c:29:86:c1:db:e3:80:60

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate peyker.de

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for peyker.de

Public Key Algorithm

RSA

Key Size

4096

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

peyker.de
peyker.server320.star-server.info
www.peyker.de
www.peyker.server320.star-server.info

Other certificates including the domain name peyker.de

(limited to 100 certificates)

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAqoWvsXuQ0Uw7/q+c6uM9
3Ytri88nZXWl+kEYK8p4jOyk2i0Vu1aA861Yn+Ao4U2axoATZlTKRD4hBD+JeDJV
JCwwfpRsxeyZiziUJIHD6t2l6vHptwmCIqO493vPPvPmXm2JmWBNi/HN8bO9vtkX
k3g7UyMI5YHiO9/Hs/glAp6Ax7xrFTYnt4zOrTcuS9e61aPmF4l9SDQMfkrr0rAI
442LYwHY0Nz2GuK7lKEIfQmUecGmKaR5GTGmv4dc2cO8U3YKvbjSTQU4U52PNvz5
eEoFDCePdLgkky/eqME/72Y7ufe7EnAB504HilhOyqW6IWEOs4yDgum8URW662M7
iI7AhhvQANw39WO5UGT9RbAfGTW/joeYM4/H+a2P3BVhtog/XWCF9JTtFRMsqvlW
czOgbqT/oeu32fhztX0XasM3JFO/o5A4IwBt2E69DHzlbjO+0l58vL2oOrWdVpRR
c0wOsbHONskFo1Ptze+cgUD7vojuNL8mhhegbGgplnCQ5Sc2lFKtmqWo86O95nfD
3jXO9GWlFd2n+lLotuLLLe4nP2zADlpAKZlO2UdHmFMxWVltV6Z1/7n0ZaiYDCGT
tteUdLrq5kfxlP89eIINrBG+EOcC2oQklSS5Zt17Jlk6s8bOW/WZHjZ8VdJ9wIJp
DD9+AlD+UokhKiaGW/+fpmsCAwEAAQ==
-----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 376609276833064858786471644639826669698363
 . . . . . . . . [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 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-03-04 00:30:55 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-06-02 00:30:55 +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 'peyker.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 695669931128290918748569375552148292063986490113355306542507930991154902420755302869078739182452275654093410428142225524418461603257786525939580298266480139851936457509824091509127970126368595836703139992245851870141979027383675209746160766234102880799669765893955912026182881660168788305343166714094131853656741792414370904021956965503463590376168513697812335683879459035253387131762099290515283208658065006781663199311525503806620535304970163530584799440175739551429261661309638808517264978255656525853788330587439631901019093717347977639619328182721135676737792135632823833328193409335312376663169960188921479384561012668238639828998983153765729939159069546613649036297029630808912761399315312620077060014778027250444288055906016832650252546150857225952887811394939056184809688730103118738436604666967443784338898922978975312556998137343623301542867031183238762935419878308480014373552168347335014813090241644045854191142016633170232780013199537023733401612881590942268273651735484823716785086498383560838379596505627615295484293656502569751053870503731065240124234406829117763252727885413961990274948074505950801263798400695716899648716170124786152602514393211089444348596825404805343054226267072070336661749908332773976869676651
 . . . . . . . . . . . . . . . . . . . . [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)
							63ad456fc9cb78101951e3a58546d201edc8dec7
 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (102 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'peyker.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'peyker.server320.star-server.info'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.peyker.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.peyker.server320.star-server.info'
 . . . . . . . . . . . . . . . . [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 (246 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 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . [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)
		009369cb7f43b4fa1b2553f9a2280c212a63c1cec72c42b9d9ab6cfce5a0e1c33381b9bf746890db30e0b1f1a0cef76b869379eddb0a64ddc0ca88c7e6589ce806dbe288f7956bb8d186ac728e55b2938d65daff77484b42ba8b412c93c9431923fa44dae5a4ce2752bf4cb3edaa5c59728efd10ae911559feec35065354211a0fd00c6a034a36c83feeef13a8c276bb6594a61ddd082246aac3851f169c0b91776a73b2585a74f74d0741e5c23e822c41a7c88e14ac106b1427fbf45a07ed45aa59bfd6caa58189693c333e7aa104677527f415578a60ad9acbf2659da8ba9f0c716a016028e705dea6f1c5e90b82032bb5cbb38bc4c1523d90ce74a35dc4812d