cuonline.edu

Issued by R3

About this certificate

This digital certificate with serial number 04:90:f5:38:2b:98:9d:62:48:f0:dd:06:97:21:1e:60:e4:b7 was issued on by Let's Encrypt.

With 4 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=cuonline.edu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:90:f5:38:2b:98:9d:62:48:f0:dd:06:97:21:1e:60:e4:b7
Serial Number (int): 397775757075482509289345984798873278801079
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 3c:9b:17:69:c9:b4:ba:10:23:40:23:3a:6b:36:85:02:6c:d3:c1:d5
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 6a:81:75:f6:49:bf:10:91:73:71:26:1d:a2:25:aa:b6:b2:cb:dd:04
Fingerprint (sha256): 7d:12:bd:d6:c0:9e:55:47:1c:58:3c:de:97:24:3c:27:cd:69:db:99:79:44:d3:b7:43:69:6e:e3:87:da:1d:cf

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

Revocation information

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

Check the revocation status for certificate cuonline.edu

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for cuonline.edu

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

cuonline.edu
online-d9.cu.edu
online.cu.edu
www.online.cu.edu

Other certificates including the domain name cuonline.edu

(limited to 100 certificates)
cuonline.edu
blackboard.cuonline.edu
mediu.cuonline.edu
cuonline.edu
www.connect-a.cuonline.edu
cuonline.edu
blackboard.cuonline.edu
www.connect-c.cuonline.edu
cuonline.edu
cuonline.edu
cuonline.edu
cuonline.edu
apps.cuonline.edu
cuonline.edu
cuonline.edu
cuonline.edu
apps.cuonline.edu
www.connect-b.cuonline.edu
hosting.cuonline.edu
connect.cuonline.edu
connect.cuonline.edu
www.connect-a.cuonline.edu
blackboard.cuonline.edu
cuonline.edu
www.connect-b.cuonline.edu
cuonline.edu
cuonline.edu
thewolf.cuonline.edu
thewolf.cuonline.edu
connect.cuonline.edu
thewolf-dev.cuonline.edu
cuonline.edu
embed-tool.apps.cuonline.edu
cuonline.edu
cuonline.edu
cuonline.edu
www.connect-c.cuonline.edu

Certificate

The complete raw certificate details for cuonline.edu in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1krLGiY5HNM9z1M9B6W2
UNhLd2WZcE7Ab8LMerrbL5ObALLn0OLp4EIbW8wLwcdvd/xXMmLRnD5tHfXIx4bE
kxRPEJq/B+Umz1zj1k5u2KFKZSGGxOo17wRnySJoBgFw12LqUUIW5WmEfmixCFv4
WDN4aM+UViwYBqGw2bS603ztm0/tWWOawxyvqtuyPYvrsMB0YyTmajCvs31KB5j7
sG9Q1uKht5y3xHXa/BWCFlY7/9ruvWlqFchDDVjl7/BLDWEeHBRj3PKStyWz8xPM
DYyfcezFJ+RZkN3oc2zJug5B/Letkjbcg94uEGbKyXug9y/DogVW8AiksfMfagbA
xQIDAQAB
-----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 397775757075482509289345984798873278801079
 . . . . . . . . [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 2022-10-15 14:42:15 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-01-13 14:42:14 +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 'cuonline.edu'
 . . . . . . . . [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 27051879246987795918157081769347786029824013987700245685560176012398829669503593988997576235999467454977596675908360519638508980077350079336112409203867887727642438593859768977446738982811852850099879588124549084837490706516863948085138562804710317219100975431354198450260867336150813707970202119549657800635690121467230306050136335514175761311036955160170311563565205511445699445407394949305874757645720485424970784043326347561440200864835028841555106339193173754098299937616706943111062387923638637767080897885730749002880630516324177652134287523824852860717849020271190392257327165031828926344633865049263745450181
 . . . . . . . . . . . . . . . . . . . . [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)
							3c9b1769c9b4ba102340233a6b3685026cd3c1d5
 . . . . . . . . . . . . . . . . [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 (68 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cuonline.edu'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'online-d9.cu.edu'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'online.cu.edu'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.online.cu.edu'
 . . . . . . . . . . . . . . . . [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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f2007700b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb49900000183dc4f6a060000040300483046022100f4c2c01b4ae854a06b4754ff0a815a302176ac9eb61c6035b0e01d4d04479842022100ee0da920e3841605f8ac2c4e1765d419751840102dc75be427b41d02ee09e33b0077007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000183dc4f6a290000040300483046022100ce66ec56d3ebf101562d0d60bbbc0275808f65a23a5771012d8ab2a9cd19b113022100f24274a5c0489fb3b7db1e3d9506c23bebb5a1e6fc9ab0a63c2a72b02f8fbfc5
 . . . . [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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