link.mailer.techbook.de

Issued by R3

About this certificate

This digital certificate with serial number 03:5b:ab:be:16:bb:b9:4a:7f:69:0c:15:24:10:6c:ca:0a:b6 was issued on by Let's Encrypt.

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=link.mailer.techbook.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:5b:ab:be:16:bb:b9:4a:7f:69:0c:15:24:10:6c:ca:0a:b6
Serial Number (int): 292530838169854504806064862456545018514102
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 13:f0:dd:53:0c:d6:78:7b:50:36:9d:6d:18:9d:9c:a3:db:1e:39:62
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): d0:2e:33:e6:8e:8b:3f:b9:80:af:c0:ba:ec:ce:a4:4a:46:67:8b:24
Fingerprint (sha256): 24:28:f7:7d:1b:9a:14:e4:46:cc:46:c5:d7:b2:18:25:39:6f:b7:0d:01:17:e8:b0:d8:65:86:25:d4:c2:ea:11

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

Revocation information

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

Check the revocation status for certificate link.mailer.techbook.de

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for link.mailer.techbook.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

link.mailer.techbook.de

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techbook.de
techbook.de
static.techbook.de
techbook.de
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techbook.de
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cmp.autobild.de
static.techbook.de
static.techbook.de
image.techbook.de
static.techbook.de
static.techbook.de
static.techbook.de
*.myhomebook.de
techbook.de
pur.techbook.de
stage.techbook.de
image.techbook.de
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static.techbook.de
techbook.de
stage.techbook.de
techbook.de
link.mailer.techbook.de
techbook.de
static.techbook.de
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data-50c00d5d12.techbook.de
image.techbook.de
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techbook.de
pur.techbook.de
link.mailer.techbook.de
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link.mailer.techbook.de
static.techbook.de
link.mailer.techbook.de
data-7a534833b2.techbook.de
static.techbook.de
*.travelbook.de
kmp.techbook.de
ast.myhomebook.de
*.myhomebook.de
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image.techbook.de
data-7a534833b2.techbook.de
static.techbook.de
businessinsider-fr.businessinsider.fr
techbook.de
static.techbook.de
techbook.de
link.mailer.techbook.de

Certificate

The complete raw certificate details for link.mailer.techbook.de in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxMxWmTMWgoAj8emNjzxe
qVe+1E5SXAJAEiV6rsz2Bmx2pFaDXR4Boev6rY07InEfNN/oVAmxeahvDcm8jpJn
UPiGFmZ+f8enCgmLyQ5K1fSaLvT3RL9rk6mTRmtcB/pY1PJE66TCIU9mV9IcRsmU
fULRqpoQHePwh/fKcG7g4ES3+DgNCFDdTMA1iHeOy1feqXCd4jXwWfqgdxZx9hH/
EbqJAwshyEWMt2e06twxY1Mxy+QTuuHyxVGZcyNfLFaCKMty62hTmDmVxO9G7ie5
OVo7erekl8irpY2dNyFPEhb2CRTCmeO6EPNsg02b7WQEGxq8RXxvgnFRSy2pAnoE
lwIDAQAB
-----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 292530838169854504806064862456545018514102
 . . . . . . . . [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 2021-12-24 23:58:13 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2022-03-24 23:58:12 +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 'link.mailer.techbook.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 24843470732305837715150576383750190514257084769973320270891045953973694893808452809972635556754559084467820208247924735425142370047442035574537148505611388152994855561391286416242343332379069734473193520115473475849079302438459856539782563608853632481443323067878029939292438645014501473491481332176814379257317131607629662838983771278229769629082379822711764861874969528787285584729348942098469378113997973688245393560549547795721775172181306986503031420472004827698806042248102925192402889739650001016728640664063609080219032059218804356199678766477087404832863151181189100766045815778258989689330223545633602143383
 . . . . . . . . . . . . . . . . . . . . [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)
							13f0dd530cd6787b50369d6d189d9ca3db1e3962
 . . . . . . . . . . . . . . . . [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 (27 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'link.mailer.techbook.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f100760041c8cab1df22464a10c6a13a0942875e4e318b1b03ebeb4bc768f090629606f60000017def1867c3000004030047304502203801c4e5aa863743c663fb39745495fc26658d3983ebfd02d4cecbe4f46099d002210091c43a14c6788c8e3173188a88bb2228f4c6697b26d7b9fd5d08a90f66c6c6da0077002979bef09e393921f056739f63a577e5be577d9c600af8f94d5d265c255dc7840000017def1867bf0000040300483046022100b35826f8e72541e7636286d4c5993fe4c8f106d4bca239a525fd903e3c62be09022100d149adf51db4eb22df6f419c7a4ae7ca4fcf588662863ffd8cf355882bdd7945
 . . . . [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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