mail.rekreo.co

Issued by R3

About this certificate

This digital certificate with serial number 03:3b:b3:6d:75:2a:46:2e:23:70:28:74:ef:e7:ac:e2:db:16 was issued on by Let's Encrypt.

With 3 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=mail.rekreo.co

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:3b:b3:6d:75:2a:46:2e:23:70:28:74:ef:e7:ac:e2:db:16
Serial Number (int): 281652017591610415703143607297802579925782
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 9b:18:b6:1b:49:76:b1:df:07:e5:23:ee:2c:d0:d1:0b:3e:62:27:b4
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 6b:4a:c5:6e:68:4a:20:58:ec:41:ee:8c:b4:60:11:20:a7:f3:17:e9
Fingerprint (sha256): 45:26:10:a3:01:8a:4f:fe:2b:e5:a5:45:3c:8a:d8:87:54:84:2e:73:fb:5a:31:60:27:39:3a:bf:6f:68:07:b1

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

Revocation information

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

Check the revocation status for certificate mail.rekreo.co

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail.rekreo.co

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.rekreo.co
rekreo.co
www.rekreo.co

Other certificates including the domain name rekreo.co

(limited to 100 certificates)
rekreo.co
rekreo.co
rekreo.co
www.rekreo.co
rekreo.co
mail.rekreo.co
rekreo.co
rekreo.co
rekreo.co
rekreo.co
www.rekreo.co
rekreo.co
rekreo.co
rekreo.co
rekreo.co
rekreo.co
rekreo.co
rekreo.co
rekreo.co
rekreo.co
rekreo.co
rekreo.co
rekreo.co

Certificate

The complete raw certificate details for mail.rekreo.co in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFAjCCA+qgAwIBAgISAzuzbXUqRi4jcCh07+es4tsWMA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzEwMjMwMzQ1MTVaFw0yNDAxMjEwMzQ1MTRaMBkxFzAVBgNVBAMT
Dm1haWwucmVrcmVvLmNvMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA
p/BCmDLMcXx1Y7qcPSFhMarXf1gCXEFENtULuHKi5wBeFqUVB1yQRIMlIEmLfBY5
59PYeWwq7kJfnvwzFSKXWKpNoZHzBvEqIzvtUkG83eGeo1O0nH/GVFCXfYFTiu7J
lBeXR4/g7WMDNkkQEALL3O1aLrFV0ZikFJANCa6I08jMJ5Eu7UFjioFMmrZ81hHc
JD/Ghabsfi/vlnQirxAgSgxCSB/ORozT4kniruJbE5awSIfONOEne3/ku4TMFfTk
CRc8FqiDp5fbZLRQ+bd3uJQpGRjjhct0Wyd8n2+UmS3iCsMO9qomkdYz//PpzfEN
FWKC1CZQDCQisBz1NjcVxwIDAQABo4ICKTCCAiUwDgYDVR0PAQH/BAQDAgWgMB0G
A1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1Ud
DgQWBBSbGLYbSXax3wflI+4s0NELPmIntDAfBgNVHSMEGDAWgBQULrMXt1hWy65Q
CUDmH6+dixTCxjBVBggrBgEFBQcBAQRJMEcwIQYIKwYBBQUHMAGGFWh0dHA6Ly9y
My5vLmxlbmNyLm9yZzAiBggrBgEFBQcwAoYWaHR0cDovL3IzLmkubGVuY3Iub3Jn
LzAzBgNVHREELDAqgg5tYWlsLnJla3Jlby5jb4IJcmVrcmVvLmNvgg13d3cucmVr
cmVvLmNvMBMGA1UdIAQMMAowCAYGZ4EMAQIBMIIBAwYKKwYBBAHWeQIEAgSB9ASB
8QDvAHUAO1N3dT4tuYBOizBbBv5AO2fYT8P0x70ADS1yb+H61BcAAAGLWtn2BgAA
BAMARjBEAiAfYHLy18KYu3BWtqFgXyXMieimYU3ACIs6kmhsR+2uUQIgKsguie11
t8orGy67TelBWAAEuh8MEj2VwWbaacQ6hiIAdgB2/4g/Crb7lVHCYcz1h7o0tKTN
uyncaEIKn+ZnTFo6dAAAAYta2fZsAAAEAwBHMEUCIQCTlt9Jnmp2OZtF3hLwqJIk
NP3yNyfU3htmh//CIyAB2gIgTxyEQo+kkmWa3v3qYyuOkQwvW1okcHPqOt00h9PF
IkIwDQYJKoZIhvcNAQELBQADggEBAINKK03++YcQYWOfSfWdXnsgMbtCQobCnsWW
usbGsHjfgS1VpTHxLvQTtkEwIpvnpdLIIRUjI/+W8PiWEsdmgBo4uI1ZuvqmhNJJ
O+AZXAaHb82SnUHF0LTW4ppGt3f8JFqdj/qxIeBaXRTtfB+JBFiTK+sCK4bpTxkV
Ik1VbtNxRYWFQ/kUQKX/zW2X34t2lf3sQ/b1jydZ5NGqZ/w/KvjQRqZGZVNjGPj0
gLUiSJDbrCU5lJdTwONUjCYjL8o2KcZBIRfabW6rJV1RbY8BIXB+3sYBv/1CplD/
0V64GovBEeBULwtCmjE9m3/m0H/vFLMhTIX9DdvUgpQ1eMomfAU=
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAp/BCmDLMcXx1Y7qcPSFh
MarXf1gCXEFENtULuHKi5wBeFqUVB1yQRIMlIEmLfBY559PYeWwq7kJfnvwzFSKX
WKpNoZHzBvEqIzvtUkG83eGeo1O0nH/GVFCXfYFTiu7JlBeXR4/g7WMDNkkQEALL
3O1aLrFV0ZikFJANCa6I08jMJ5Eu7UFjioFMmrZ81hHcJD/Ghabsfi/vlnQirxAg
SgxCSB/ORozT4kniruJbE5awSIfONOEne3/ku4TMFfTkCRc8FqiDp5fbZLRQ+bd3
uJQpGRjjhct0Wyd8n2+UmS3iCsMO9qomkdYz//PpzfENFWKC1CZQDCQisBz1NjcV
xwIDAQAB
-----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 281652017591610415703143607297802579925782
 . . . . . . . . [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 2023-10-23 03:45:15 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-21 03:45:14 +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.rekreo.co'
 . . . . . . . . [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 21200273617519754847978122844254473000952985726884936645588013153037391619933013402629284699282166013892253515091709728101076720165496782725140128000622375443700676675581254852918085434805939448285506148610438921810264018874685407835269658072386353682790719404234843961495200421517996550572757643411663233491339364883159033006855076549656346380518938352516459238920308965153392273979541333729506389612880195540285559845163002982531544232794340552137394683854475920374689307042524655594637844067250221887921689752842318908120904443477597740665764242392448622363421921111938233495454110632926518590421260663278416631239
 . . . . . . . . . . . . . . . . . . . . [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)
							9b18b61b4976b1df07e523ee2cd0d10b3e6227b4
 . . . . . . . . . . . . . . . . [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 (44 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.rekreo.co'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'rekreo.co'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.rekreo.co'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b5ad9f606000004030046304402201f6072f2d7c298bb7056b6a1605f25cc89e8a6614dc0088b3a92686c47edae5102202ac82e89ed75b7ca2b1b2ebb4de941580004ba1f0c123d95c166da69c43a862200760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018b5ad9f66c00000403004730450221009396df499e6a76399b45de12f0a8922434fdf23727d4de1b6687ffc2232001da02204f1c84428fa492659adefdea632b8e910c2f5b5a247073ea3add3487d3c52242
 . . . . [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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