mail.ars-serendi.de

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:ce:1e:e5:2e:d3:74:3c:74:db:7d:f0:43:18:45:cf:8b:08 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=mail.ars-serendi.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:ce:1e:e5:2e:d3:74:3c:74:db:7d:f0:43:18:45:cf:8b:08
Serial Number (int): 331476092206592172772059406765585846995720
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 72:84:5e:d6:9f:13:b3:a2:bb:20:6a:54:c5:36:db:fd:03:23:30:f6
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 06:8c:d7:e6:7b:ed:ab:24:e4:8a:62:e5:91:c1:1c:ae:a7:49:b0:a3
Fingerprint (sha256): 11:c2:b4:a6:63:f2:9e:97:33:74:9b:c9:43:61:dd:98:2e:65:66:d3:d2:48:ab:2e:43:7d:83:6b:11:cd:52:c2

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 mail.ars-serendi.de

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail.ars-serendi.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

autodiscover.ars-serendi.de
mail.ars-serendi.de

Other certificates including the domain name ars-serendi.de

(limited to 100 certificates)
www.ars-serendi.de
ars-serendi.de
ars-serendi.de
mail.ars-serendi.de
www.ars-serendi.de
ars-serendi.de
ars-serendi.de
www.ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
mail.ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de
ars-serendi.de

Certificate

The complete raw certificate details for mail.ars-serendi.de in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0VYFPxPlqw5bifKiPi6e
/b0T37Qlxvkqs/t15lIC+nBZf4K///xxeAYmYZsxMpcLm90UbX+rh3G45aU4Iz8m
GA4jPU9PCgBJSHu4DPnr/LgHbCOk38Y4V6JXtcIHHHltXt957L4kghp4HutVZ5yV
kpV3yZG4MkdT2WZSph340tX5aN62J7unRD6wo0rQuTLwOKhbtaim1pm9X0OsUsKL
GA4vXJONyYfdSrgehINGfRhV+adEkW4nCgQ6oAnvnYgXiDfImtQ26nGVgkZ9UMe/
td+lWum24Qd82mwOSDd40Vw4qj79Clq2iZukYcAlL/IECuWXhZuduaJDlqOtqLUJ
YwIDAQAB
-----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 331476092206592172772059406765585846995720
 . . . . . . . . [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 2020-02-03 21:01:13 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-03 21:01:13 +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 'mail.ars-serendi.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 26426224024320469922099445435711327441293729512759510600804274464043762453857030715634538376810272066253576213224911261456300388380702183836891807630957011327989878531178661066727704942401829414536192973442326546892330802100987197008968619345109659668822290715175107033548560916705753907427970731933891941034631687674425634523336149330877555579471607907244867267801512950983834036025114589738924396935812161141398957357626397060269395568712372590688026582871802975034566808021308601262734503901373208512978814421469306848979989961316106409809436120887693812188816859716311531571463581358381841686940138714136841619811
 . . . . . . . . . . . . . . . . . . . . [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)
							72845ed69f13b3a2bb206a54c536dbfd032330f6
 . . . . . . . . . . . . . . . . [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 (52 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'autodiscover.ars-serendi.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.ars-serendi.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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f200770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c000001700d1263540000040300483046022100e055c2608542c7993c220723d47e9fc48cfecbff04c1c5b5c8ce07931ff566b3022100e824556e91f7c373d5a47b6b76c6b9e219c5b118c6c807d9d5f1e7a65f95c646007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb273000001700d12651d0000040300483046022100d96d1b3fcf87072d9bf18aaad1aa73d4e819c05b371111012381256d905845c802210085bdf5474b6dcb9d8037e81ec0b6da4e444a7acee08ef0e8b6a49ff63437116a
 . . . . [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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