email.zu.de

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:55:b4:b6:c8:8d:d9:d5:fc:a6:b4:d4:70:cf:12:23:18:0b 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=email.zu.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:55:b4:b6:c8:8d:d9:d5:fc:a6:b4:d4:70:cf:12:23:18:0b
Serial Number (int): 377613355020310802762921227012123704629259
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 80:b7:f0:a3:3b:a1:3d:fa:a5:31:e8:b3:58:91:11:72:d2:98:b2:c5
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): b0:62:87:1e:94:bd:78:52:53:4e:90:8a:9f:2a:f2:8c:07:79:a5:06
Fingerprint (sha256): 31:d2:27:27:0e:62:59:9e:64:96:1e:d7:35:3d:14:07:19:3d:fb:77:7b:77:d3:ad:14:f1:f4:ad:2f:ff:bb:24

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 email.zu.de

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for email.zu.de

Public Key Algorithm

ECDSA

Key Size

256

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature

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

email.zu.de

Other certificates including the domain name zu.de

(limited to 100 certificates)
repro.zu.de
opus4.bsz-bw.de
opus4.bsz-bw.de
ezproxy.zu.de
connect.zu.de
ts.zu.de
radsec.zu.de
ezproxy.zu.de
learning.zu.de
helpdesk.zu.de
repos.bsz-bw.de
email.zu.de
email.zu.de
www.zu.de
dms.zu.de
zucoyo.zu.de
cms.zu.de
cms.zu.de
cms.zu.de
repos.bsz-bw.de
app.zu.de
email.zu.de
email.zu.de
email.zu.de
navweb.zu.de
repos.bsz-bw.de
email.zu.de
cards.jonathanmuth.com
svp.zu.de
*.pbx.zu.de
radsec.zu.de
helpdesk.zu.de
guestportal.zu.de
mediathek.zu.de
guestlogin.zu.de
guestportal.zu.de
coyo.zu.de
zu.de
planspiel.zu.de
cms.zu.de
zu.de
repos.bsz-bw.de
opus4.bsz-bw.de
ezproxy.zu.de
zu.de
repro.zu.de
cms.zu.de
repos.bsz-bw.de
m.zu.de
repos.bsz-bw.de
cms.zu.de
systemone.zu.de
opus4.bsz-bw.de
guestportal.zu.de
learning.zu.de
email.zu.de
email.zu.de
zu.de
opus4.bsz-bw.de
finreporting.zu.de
helpdesk.zu.de
learning.zu.de
WEBMAIL.ZU.DE
cms.zu.de
guestportal.zu.de
opus4.bsz-bw.de
systemone.zu.de
adfs.zu.de
cms.zu.de
idp.zu.de
radsec.zu.de
zu.de
zuqpilot.zu.de
www.zu.de
reporting.zu.de
dms.zu.de
connect.zu.de
cntest.zu.de
repos.bsz-bw.de
m.zu.de
opus4.bsz-bw.de
zuqpilot.zu.de
learning.zu.de
repos.bsz-bw.de
dms.zu.de
opus4.bsz-bw.de
systemone.zu.de
m.zu.de
rdweb.zu.de
mediathek.zu.de
radsec.zu.de
www.zu.de
idp.zu.de
zu.de
systemone.zu.de
www.zu.de
opus4.bsz-bw.de
adfs.zu.de
*.pbx.zu.de
ts.zu.de

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEAQdi9XQGDhadWG3unt04wvYXtPpJ
yBSYQPYchseiqE24xkg53wqGDgu0lslNh8ONp+8R+SIJRqKlU7lHiKQpxg==
-----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 377613355020310802762921227012123704629259
 . . . . . . . . [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 2019-12-31 09:16:40 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-30 09:16:40 +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 'email.zu.de'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.2.1 (ecPublicKey)
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.3.1.7 (prime256v1)
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (520 bits)
				0004010762f574060e169d586dee9edd38c2f617b4fa49c8149840f61c86c7a2a84db8c64839df0a860e0bb496c94d87c38da7ef11f9220946a2a553b94788a429c6
 . . . . . . . . [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 (1 bits)
							0780
 . . . . . . . . . . . . . . . . [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)
							80b7f0a33ba13dfaa531e8b358911172d298b2c5
 . . . . . . . . . . . . . . . . [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 (15 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'email.zu.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)
							00f0007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016f5b75235d0000040300473045022055db79e2f8b3739cad0a7aa27ede6c775db2a7805f5593893b24ad8e313424ac022100a3bff01302ebadb4361a3e1706c955a32f96840a0606ddc6d1d39fab67141b6700760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016f5b7523880000040300473045022048617a12eae980f8fa56f41b34d2bc32aa8670b508f8b4fae17d7a1d8440fd90022100e4e4cf51231a167ed9b01d84038798d4e2d146c4c2ce1a4f53ac65a2f9b4627c
 . . . . [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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