mail.go-concepts.nl

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:4c:86:37:d2:d6:a9:e1:b1:ad:8d:b9:60:b2:a1:bb:66:41 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=mail.go-concepts.nl

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:4c:86:37:d2:d6:a9:e1:b1:ad:8d:b9:60:b2:a1:bb:66:41
Serial Number (int): 287376724085347880664509792370537344493121
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 8f:f7:eb:be:03:91:56:c0:d3:81:04:a6:62:24:0c:59:39:b6:1c:65
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 85:36:10:6c:eb:d8:a8:fc:5d:9a:ba:f1:7a:ca:c5:ad:65:f9:a8:35
Fingerprint (sha256): 71:47:e9:41:81:a5:cb:c5:34:c1:a9:ec:bb:5e:b9:89:86:7c:0f:36:c7:97:31:f5:95:ab:ed:5b:9b:31:f9:e2

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.go-concepts.nl

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail.go-concepts.nl

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

mail.go-concepts.nl

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plesk.go-concepts.nl
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voip.go-concepts.nl
go-concepts.nl
go-concepts.nl
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ticket.go-concepts.nl
project.go-concepts.nl
ticket.go-concepts.nl
plesk.go-concepts.nl
voip.go-concepts.nl
plesk.go-concepts.nl
project.go-concepts.nl
git.go-concepts.nl
mail.go-concepts.nl
mail.go-concepts.nl
go-concepts.nl
plesk.go-concepts.nl
project.go-concepts.nl
plesk.go-concepts.nl
git.go-concepts.nl
plesk.go-concepts.nl
plesk.go-concepts.nl
ticket.go-concepts.nl
go-concepts.nl
go-concepts.nl
git.go-concepts.nl
git.go-concepts.nl
plesk.go-concepts.nl
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git.go-concepts.nl

Certificate

The complete raw certificate details for mail.go-concepts.nl in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFXzCCBEegAwIBAgISA0yGN9LWqeGxrY25YLKhu2ZBMA0GCSqGSIb3DQEBCwUA
MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD
ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAyMDExNjExNTFaFw0y
MDA1MDExNjExNTFaMB4xHDAaBgNVBAMTE21haWwuZ28tY29uY2VwdHMubmwwggEi
MA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCpyIiXzFCY5Q7x2h9PrZbltAXq
qUc+uEFpSiq8pUHnVO/KqfE4fxnX610Q/HCvnpEkqS7C+XhmbCHgGVASisLCvyTI
TtDxEwkZYLNQUBoM6LzS9hJd+rFtga6yWuCTq5eww769EcmNPUWp9aweLfC3/h3R
k4gzqe4JyEmJE+x5NH6Q7yYqwqu3wZMfQ8ofGC8+fZKIXYB089IZ3+MPw7WDyHm6
P/ZFFs6GTL2kpx2DzTvI/dg4atU1Tuen/QDQtEng4wSXMSEEBI12vt+fKZqDnoeD
GtgVD3NyHFB1fhJAMoHaEmVFzPn4KmOPw4N2/MFjc5Pnv64i5f2vFPb5lKIrAgMB
AAGjggJpMIICZTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEG
CCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFI/3674DkVbA04EEpmIk
DFk5thxlMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsGAQUF
BwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNlbmNy
eXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNlbmNy
eXB0Lm9yZy8wHgYDVR0RBBcwFYITbWFpbC5nby1jb25jZXB0cy5ubDBMBgNVHSAE
RTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIBFhpodHRw
Oi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQUGCisGAQQB1nkCBAIEgfYEgfMA8QB2
AF6nc/nfVsDntTZIfdBJ4DJ6kZoMhKESEoQYdZaBcUVYAAABcAG8vYYAAAQDAEcw
RQIgZZlQz4xksQMcjGCipHhXPWLZYibr1iY2i+4nDb5PpA8CIQDOpQGPydcCIP+V
kMjqB0eUgBNqrMlgvBhU8zccvhN1LAB3ALIeBcyLos2KIE6HZvkruYolIGdr2vpw
57JJUy3vi5BeAAABcAG8vXYAAAQDAEgwRgIhAO9C8kMfWoSyvBwZiQqoYlfLrsX0
vN1YqN8fItOX4BzSAiEA4pRW7lIMuRgzmi/DYa9tfKgoOhkXmihMWpVr0NRuZyow
DQYJKoZIhvcNAQELBQADggEBAGGFFMtQS1lMeS5IHUAG1ghrev6WW6zrfPxenxPZ
FDaNmHpzgiCXZr6G+phtZWxK/v2ptmJn8o3tz0zAC9E3K9ho1ZnkZ5Ts67TuRcqo
4RiStn/xepEKYdbLaLt4gYiHkCQW85djUGGDjsBM3HZwG/Ec0AxlgsrCBE31kJ/v
jjVJuRhdCLORfKxgoM+JCVyZUCFD4f1AhoWRG2ldXL1UPEi3xvdyNXxOA3ZQt4V5
m+rjLg9rKDB5rUmwKn8IqIkPZsV/be40YaE9lI27DskSiE/hBvfTbFX7le56eyo2
xGZUpYQd8osopO61JSXcDzaLycOFN8CnzehxltQO8pOKKwU=
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqciIl8xQmOUO8dofT62W
5bQF6qlHPrhBaUoqvKVB51TvyqnxOH8Z1+tdEPxwr56RJKkuwvl4Zmwh4BlQEorC
wr8kyE7Q8RMJGWCzUFAaDOi80vYSXfqxbYGuslrgk6uXsMO+vRHJjT1FqfWsHi3w
t/4d0ZOIM6nuCchJiRPseTR+kO8mKsKrt8GTH0PKHxgvPn2SiF2AdPPSGd/jD8O1
g8h5uj/2RRbOhky9pKcdg807yP3YOGrVNU7np/0A0LRJ4OMElzEhBASNdr7fnyma
g56HgxrYFQ9zchxQdX4SQDKB2hJlRcz5+Cpjj8ODdvzBY3OT57+uIuX9rxT2+ZSi
KwIDAQAB
-----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 287376724085347880664509792370537344493121
 . . . . . . . . [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 2020-02-01 16:11:51 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-01 16:11:51 +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.go-concepts.nl'
 . . . . . . . . [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 21433160326345403339398601292229337818651288705051147604340228067404563251384686352400295100308727918638785226385732592710175782855844071935026931521970383864140907238057087431482800446008724042034147575545072774131456652600018396122903704864814486084193810135355579307560563879569590022963549552436306231674926850043194290767719861431885010511735268529457114078811938522285626140253858550398766962292908678345949456993401433988553687286653783638484581607886833542528978811982183180033746020493377963734308600571465218756710798418906630246722727038890682852309373169036674600711157549402352157089587958557701064401451
 . . . . . . . . . . . . . . . . . . . . [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)
							8ff7ebbe039156c0d38104a662240c5939b61c65
 . . . . . . . . . . . . . . . . [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 (23 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.go-concepts.nl'
 . . . . . . . . . . . . . . . . [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)
							00f10076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000017001bcbd8600000403004730450220659950cf8c64b1031c8c60a2a478573d62d96226ebd626368bee270dbe4fa40f022100cea5018fc9d70220ff9590c8ea07479480136aacc960bc1854f3371cbe13752c007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000017001bcbd760000040300483046022100ef42f2431f5a84b2bc1c19890aa86257cbaec5f4bcdd58a8df1f22d397e01cd2022100e29456ee520cb918339a2fc361af6d7ca8283a19179a284c5a956bd0d46e672a
 . . . . [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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