www.cedernet.de

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:22:49:60:e0:6d:09:2a:08:0e:b2:d8:72:86:d9:02:3c:0f was issued on by Let's Encrypt.

With 3 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=www.cedernet.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:22:49:60:e0:6d:09:2a:08:0e:b2:d8:72:86:d9:02:3c:0f
Serial Number (int): 273003994926681823009852629141496923307023
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 58:dd:fc:05:e1:7a:78:62:3b:d9:65:fb:92:65:7c:c1:36:46:2a:e2
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 53:34:b8:d8:87:b6:d6:4d:f5:8d:61:54:5a:19:59:32:75:e0:21:f3
Fingerprint (sha256): 4b:6a:b1:49:19:07:b6:8f:60:77:5b:3e:80:e1:29:9c:9c:66:fd:14:fa:43:7b:b2:b1:4c:0b:91:ae:92:78:a0

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 www.cedernet.de

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.cedernet.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

imap.cedernet.de
intra.cedernet.de
www.cedernet.de

Other certificates including the domain name cedernet.de

(limited to 100 certificates)
intra.cedernet.de
www.cedernet.de
www.cedernet.de
www.cedernet.de

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwnG5xgDQ+KpgucsoMYKo
X5Jj5MFxzHFPJ2MDDP8Okf5qZ3hhsNWqRyYtyFI+VAqPu2b09vtNNII7pVoTt5vw
0IeZSqRhAt3+1GHVhwQ95vtwsxdN/X9355kMS55QbCd63VAu6L6numHZf9fEUBxZ
99+zNLq7RtKPY3BtCvTvrvsOJ3nCksFgKSNbxiXVfgkMurgH5f4gqT6brF3NIPSV
fHWWN2HoE3wYsZN/ovCS8OqH+xHupsWHNbPTJ3mcLRFGopbrnu2sB3DXjRz/KIJT
InpJrBUfCe36ezzj07HMnF0/r2gKi1VLf67yQrO0Gpq1QopGKtYJXldg6YQPr/RC
/wIDAQAB
-----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 273003994926681823009852629141496923307023
 . . . . . . . . [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 2019-06-08 15:17:44 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-06 15:17:44 +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 'www.cedernet.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 24546311385148286594116765928388288230730252617464299853570588613526850120151771043554690694494108823407658675947011020264307741048577976437111791270849264520638456882632579893073281147129012500612857777756942233475233282310825212576850067046133291374432165157403742443088525017679977394849915701969116464280300333904358853865461084973307005209160160486887837920161418277400415988527670499911306549040579161812725612241781551526315388863846586252546339451311296249205283407257042725689436599026087743784373273275886142011787063817728173227661548020848318714290195054268807804826851578097917646762250794993430002156287
 . . . . . . . . . . . . . . . . . . . . [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)
							58ddfc05e17a78623bd965fb92657cc136462ae2
 . . . . . . . . . . . . . . . . [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 (56 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'imap.cedernet.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'intra.cedernet.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.cedernet.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 (69 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016b37e1add9000004030046304402203582c0502b5502b4a4902ff80c93a155097da48b1a2deb96535bb9d3acd607dd02202f359a50ae079631cbfe4325fc2fd5027982f36eaa60f3b3e23f8e04212eda8400770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016b37e1abd40000040300483046022100f643a472b4c1622dfd4599748f5fe942411afef69457e94a26a0595868dbb1c1022100ef94dd6bfe52c6a9812fbc54bd888f60c892bba5ad9bb3a8a0a9b0253958cf70
 . . . . [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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