medi-media.de

Issued by Let's Encrypt Authority X1

About this certificate

This digital certificate with serial number 01:f5:d0:c2:b2:7d:0e:50:46:78:31:a8:5a:12:57:a5:17:63 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=medi-media.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 01:f5:d0:c2:b2:7d:0e:50:46:78:31:a8:5a:12:57:a5:17:63
Serial Number (int): 170758956176280848054540892069900983801699
Serial Number lenght: 137 bits, 18 octets

SubjectKeyId: 4a:f9:27:2a:de:04:bc:82:f3:2b:87:f6:db:a7:b7:8e:78:7b:d0:5d
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 43:04:de:fb:4b:57:8d:2c:ee:0a:82:b1:7e:c7:7b:ff:ee:5c:e8:c3
Fingerprint (sha256): 34:1d:d0:3e:3d:77:4d:1c:ba:67:14:a5:28:c7:e5:bc:d7:ae:f0:4e:83:95:8a:19:28:10:1d:6a:2e:a5:4b:a7

Issuing Certificate URL: http://cert.int-x1.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x1.letsencrypt.org/

Check the revocation status for certificate medi-media.de

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for medi-media.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

medi-media.de
www.medi-media.de

Other certificates including the domain name medi-media.de

(limited to 100 certificates)
www.medi-media.de
medi-media.de
medi-media.de
medi-media.de
www.medi-media.de
www.medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
www.medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de
medi-media.de

Certificate

The complete raw certificate details for medi-media.de in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAvbUhXdmaclhxIhrDN0Pe
WU5rm7nUBZ8ruQUTfaocX2VBC1oNSSVXeCcEEwm2bFLySDZTfn3W0Sm4y1ZgzSmI
4x0C+t3+ecVVUaEOhMUDQchR+2/vCwRrb70PhvLvyiQOazWMqo4Ae05SmOe33Btp
kY/xiO8Ug5hHTsF7ERxVqbBZEH7N0fMtrNQTaCtz6U7o39bxnYAzDmYXbt1Xs23n
CwDULnho9rne43K1W5hkPXQRGwir2gld7bAw/Koa5wmF7ePYQUgLJG/jY/diPWgN
iO1Z1cH240fwfOSYbyPrIwXJUVLO556SzKR07wNgGwLt/TGu+HN0exrchvnn4zxV
qLpQpARrOU67K1ZPeHEWlM+hMy7oZ+FyYdwNs0ZPT0ps36ym9M7NqAumBA/hmsq+
6OMvntMEonwWPq3kaixyg1Gmn4xBnHN/G0GHGSSsygot2leqJDMxSPNhZS+CI8JY
l89uZDZprZYO/49i+0VTd1dzVdnx8H6H+Up6WVyPN8B1nwiqplXene0bFqanXFOS
McJmXKouQysQ4kZM04DFeIWaHdPgpPyPcheCkIKw+mpura4iY7gWhB8evpfSdF9e
Yj5eOJZxOcPDw4yrdzos72+3MKU91+LM3WUr+FW4LxpRYzNanokjvF362hfkw5Vk
ryaTZ6AaaX4TBnUQCaaRwUUCAwEAAQ==
-----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 170758956176280848054540892069900983801699
 . . . . . . . . [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 X1'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-02-28 22:02:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-05-28 22:02:00 +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 'medi-media.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 773939241786012143110689032389749916077666000173326121419280400920882495856742018903532315443130061212639605691841335800934160080469224603077732358617281964061042187196956533834429092919203262872438025897525343118796001365422551897945866175298314564121017833328853889130918623926121592554788934588415897908751462133968634295905075157137391302635212163255967796609833723870113633101294170899091609916065250335141054810638072944504094433714297072060274658663422244699719844803200115298826578619448368304132545141540795256167561300551707425721839492785026353402268475359059441765082318866181580268801362026080788611149800007826036302714381958780039855705917759146702110924026994945765510082441554321513646908402727117249317681614466089761258486588498194075388252612871607939448354301273807972153973019312328392579860357773994074546849496261543683370199235687939371648161809590400989415061174573376298051945721139662305980719307273861291962965000063488736962627171135692848955929926013140044944072970104980264430607119370581492461355013352843402861355213039884378304240586508245094817855151550561343199160859726510386290382277371498186339542834515864940224943955283069186406369534267162579203946047819471574674820629361074397022314938693
 . . . . . . . . . . . . . . . . . . . . [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)
							4af9272ade04bc82f32b87f6dba7b78e787bd05d
 . . . . . . . . . . . . . . . . [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 (100 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-x1.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-x1.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 (36 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'medi-media.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.medi-media.de'
 . . . . . . . . . . . . . . . . [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)
		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