mta-sts.r13t.de

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:36:5e:71:90:d8:83:52:71:0e:61:d3:fb:40:2b:43:6e:d3 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=mta-sts.r13t.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:36:5e:71:90:d8:83:52:71:0e:61:d3:fb:40:2b:43:6e:d3
Serial Number (int): 279837642707981121725487067926266604908243
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 13:d9:46:7b:c5:72:d9:3a:e8:ff:c8:49:a3:38:9f:94:eb:82:ca:1f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): b4:ca:10:f4:0d:12:0c:a7:3e:df:6c:49:f8:30:ee:f9:8c:cf:9f:6b
Fingerprint (sha256): 7a:8c:83:67:e0:de:e7:c9:07:e2:45:c4:11:a5:40:10:45:76:b3:16:f5:41:79:5a:78:98:0d:98:61:f7:1c:c4

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 mta-sts.r13t.de

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mta-sts.r13t.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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

mta-sts.r13t.de

Other certificates including the domain name r13t.de

(limited to 100 certificates)

Certificate

The complete raw certificate details for mta-sts.r13t.de in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 279837642707981121725487067926266604908243
 . . . . . . . . [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 2019-10-28 21:34:30 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-26 21:34:30 +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 'mta-sts.r13t.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 884680174701725451416671644275506047653041668443286744045574701795399022912933255276934401685929279332413368056408100261292590916755556066328196167087621330512170880795716936501901071837527014061328399054123353859159033054477259617266009923015903256880287810105694808074775509722357922484318347060579173631688511595208127138962363171942046569063278986922590645452948778126764604238124894550381940338036547037621730226931804325366684609151033782728084404283183103787955249317763988270001989940304055984341409010725005058951980930965276651419770810347493451259789462349641620666947950988262879589772760466929658422206441219254572276219870610716395812398158233168826672068137316892267109095013582467077920132180754935388056072635080747071685926601674630314386275616387565692661516889690230665160954657052010373455362749498920109486744252557724615235049241877572586949926109104111029165594500045143643128557549976965403516312818941480569448056914608101565361031485438068940956180477902124275692011529867313576247105676828265738024241777385924092414259200508525519598040273927133798216164898486950817005095390705436781171453030340075344299208690266702420038393896530335842196360085123312704340120919449126617245731538415075882437770293361
 . . . . . . . . . . . . . . . . . . . . [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)
							13d9467bc572d93ae8ffc849a3389f94eb82ca1f
 . . . . . . . . . . . . . . . . [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 (19 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mta-sts.r13t.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)
							00f00075005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016e1481a1760000040300463044022031b147d8226dfee16e07ae89cb79658c8155e351ef84e4c92d42eb89b06a515802205aa8cf0f913cb01ce96a0c5cf7b501ccd01fe215943bf92abc6ef4ef17177416007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016e1481a18c0000040300483046022100b268ecb290e544ba7b5a12ce740404eafc9d339caa0dfc12e67f240e3886240b022100b342586306dfb85788e729a30a0f7d503eb9c09dd6f49ccc7a663e3544f48e24
 . . . . [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)
		004a01d9e075aaaf89ab7e7178f80a90ed9ff8919de04c30ebe9bdb39314e3bcd113b6c8c734292d80b26cfcc31db846cf596adc608f209543ee359ce15232c4e99dc1ac38749cfbe39f799e904d237984c93cbdcbadf66c2a61ed1cc6398ca721a0c3a8b184b7eee1d149ca07107577e44f8078692ea999c5f8d86863824086b036d69b830fce5bc1305a6c536d632086b61991f807b787c30aae979bbff4dedb2dc4673e3981622b828fe5b70fd1dc52a25789a1b44498be4dd80521a0284fc5bea6330919fdafbff50e391626027aa7f5da3cb860a619909267fa9e031326812351b5d78e5f3339728de3d56d51b08004bd00a6a34754486ee38a49ae71bd96