*.colostrumresearch.com

Issued by R3

About this certificate

This digital certificate with serial number 04:4a:49:47:25:c6:10:57:b9:fd:16:ec:24:b1:f7:f6:88:3e 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=*.colostrumresearch.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:4a:49:47:25:c6:10:57:b9:fd:16:ec:24:b1:f7:f6:88:3e
Serial Number (int): 373727441942101077042214992381172138805310
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 5a:d9:8f:0e:14:23:09:0d:c9:f3:22:a5:06:bf:7c:8c:2a:7a:86:bb
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 05:0b:90:8b:16:03:13:67:0c:42:a2:2d:22:c0:73:7f:ad:3e:69:09
Fingerprint (sha256): 11:42:71:71:51:b8:f3:f1:76:9e:a2:14:9a:17:21:13:58:97:d6:04:26:25:bc:62:e6:a6:57:dc:a6:0c:2f:10

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

Revocation information

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

Check the revocation status for certificate *.colostrumresearch.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for *.colostrumresearch.com

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

*.colostrumresearch.com
colostrumresearch.com

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Certificate

The complete raw certificate details for *.colostrumresearch.com in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFEDCCA/igAwIBAgISBEpJRyXGEFe5/RbsJLH39og+MA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzA3MzEwMDQ2NDBaFw0yMzEwMjkwMDQ2MzlaMCIxIDAeBgNVBAMM
FyouY29sb3N0cnVtcmVzZWFyY2guY29tMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8A
MIIBCgKCAQEAoOJ/G8cWC/dEbAqvznIRHJuLVhYG8MkkKne0xQiMX5bkIzXIQWJk
k3ymhIRKJOGEGJ+kDBph/pl2RZRNOrMklfB5KQvNsMDWFLbZKNiaky6J0Ib/uck3
/o9lXPLGG5D8aJsL15tu8dqsKV129biYEcC1d5RDpgbfb+Gl5lEDbKVoQwVu9s9W
HGdW6R1DPk/L81YAtbdFzQNmwY8WcG3EJO8fgRvaJQr8zU53GDntDqoCv0zrj/24
0V6S9FyVf5CRC66zvCWTKpo5So0L1An7lFQESEUM7RkYQM83wYDHHhJscQkmVbRN
og4H8uxhzW3XseWisaiPPSLX9QS6rhPDCQIDAQABo4ICLjCCAiowDgYDVR0PAQH/
BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8E
AjAAMB0GA1UdDgQWBBRa2Y8OFCMJDcnzIqUGv3yMKnqGuzAfBgNVHSMEGDAWgBQU
LrMXt1hWy65QCUDmH6+dixTCxjBVBggrBgEFBQcBAQRJMEcwIQYIKwYBBQUHMAGG
FWh0dHA6Ly9yMy5vLmxlbmNyLm9yZzAiBggrBgEFBQcwAoYWaHR0cDovL3IzLmku
bGVuY3Iub3JnLzA5BgNVHREEMjAwghcqLmNvbG9zdHJ1bXJlc2VhcmNoLmNvbYIV
Y29sb3N0cnVtcmVzZWFyY2guY29tMBMGA1UdIAQMMAowCAYGZ4EMAQIBMIIBAgYK
KwYBBAHWeQIEAgSB8wSB8ADuAHUAejKMVNi3LbYg6jjgUh7phBZwMhOFTTvSK8E6
V6NS61IAAAGJqaBH0wAABAMARjBEAiBzu89FQ/fCHed67xe7sjk9fDKzdU26rEgF
hKoSPvvZOQIgIVkNb02+pn9YUUjpn+kZ9VhdJ0KJCL9sLuGXoj4+axIAdQC3Pvsk
35xNunXyOcW6WPRsXfxCz3qfNcSeHQmBJe20mQAAAYmpoEfAAAAEAwBGMEQCIAGQ
HQT0Cg20ITserMZ7mfqYz2nzaCIQ0bObRU1BGdD6AiA5a2jBkLfaZpyzsKtDh0Lm
NmhcThqnz6iooKUxTW1L0DANBgkqhkiG9w0BAQsFAAOCAQEACjthXWyelaohOrEi
nQQq9IbJk5ul8Ce2HbWiJym4RDd/EjzBKmA0RwgAP5H1ZQhxaLSSqw2mEYLE2poF
yVMcqleKnHsFiXTHIhTncAYyZk5XExv+wa836P64/9Nm3Amm6v1p18LR9A3le9gy
YnUWwvAbEgteOFEE+LunlKxPbS4cG1yrtX+YAtZOYy/6kYsxkN/OY5EuPypGG+ud
FBZUDJDjF9uGs/Z/W9mrDctcfYaUH2ol7oUFcRr3JdiIGkKWlj00N7puG0u0hpI8
KRmZYfRUoym6Kx3d5UE9x54JlV4eSb7InfNfEnYyFUV6axYrDO/S8v96Plhgjlw5
c2kPJg==
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoOJ/G8cWC/dEbAqvznIR
HJuLVhYG8MkkKne0xQiMX5bkIzXIQWJkk3ymhIRKJOGEGJ+kDBph/pl2RZRNOrMk
lfB5KQvNsMDWFLbZKNiaky6J0Ib/uck3/o9lXPLGG5D8aJsL15tu8dqsKV129biY
EcC1d5RDpgbfb+Gl5lEDbKVoQwVu9s9WHGdW6R1DPk/L81YAtbdFzQNmwY8WcG3E
JO8fgRvaJQr8zU53GDntDqoCv0zrj/240V6S9FyVf5CRC66zvCWTKpo5So0L1An7
lFQESEUM7RkYQM83wYDHHhJscQkmVbRNog4H8uxhzW3XseWisaiPPSLX9QS6rhPD
CQIDAQAB
-----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 373727441942101077042214992381172138805310
 . . . . . . . . [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 2023-07-31 00:46:40 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-29 00:46:39 +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:12|false] UTF8String '*.colostrumresearch.com'
 . . . . . . . . [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 20309818390128027969961047057054052970493556077269158224652545658551062662330118147833686264506425348564733287746594881739384907470487363425298366948534008093918143895582203856616302154223920020630072258569885824950113335498426179845855155533695431033771781864714817942126359115930668470796895543783079527761649447538402120811487868856453266883835313552677715536676168441664660343811105460221986363390018202446838647077776189932244656773121486140468725767330575034891560054091982570777166274913915125544057562699335566283221851155103625923254983208190266619024484899586652274632215922766672351176236608010152119091977
 . . . . . . . . . . . . . . . . . . . . [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)
							5ad98f0e1423090dc9f322a506bf7c8c2a7a86bb
 . . . . . . . . . . . . . . . . [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 (50 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.colostrumresearch.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'colostrumresearch.com'
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee0075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000189a9a047d30000040300463044022073bbcf4543f7c21de77aef17bbb2393d7c32b3754dbaac480584aa123efbd939022021590d6f4dbea67f585148e99fe919f5585d27428908bf6c2ee197a23e3e6b12007500b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb49900000189a9a047c00000040300463044022001901d04f40a0db4213b1eacc67b99fa98cf69f3682210d1b39b454d4119d0fa0220396b68c190b7da669cb3b0ab438742e636685c4e1aa7cfa8a8a0a5314d6d4bd0
 . . . . [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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