cuonline.edu

Issued by R3

About this certificate

This digital certificate with serial number 04:1a:86:19:90:46:de:20:d1:d7:1c:c6:d2:bd:6c:a5:19:44 was issued on by Let's Encrypt.

With 6 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=cuonline.edu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:1a:86:19:90:46:de:20:d1:d7:1c:c6:d2:bd:6c:a5:19:44
Serial Number (int): 357474734552123728384791490637178039769412
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 2d:41:c6:6a:c2:33:9b:c8:9b:7d:2c:f8:97:df:67:1c:90:2b:7b:f0
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 1c:c9:cc:1d:00:06:44:71:1f:23:0c:16:fb:ed:af:98:b9:7e:24:d8
Fingerprint (sha256): ef:77:b4:ed:70:fd:f9:9f:88:f8:c6:73:af:d1:51:65:a9:d6:1e:56:4b:b3:56:77:48:2f:51:16:12:6e:46:e3

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

6

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
cuonline.ucdenver.edu
online-d9.cu.edu
online.cu.edu
www.cuonline.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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9JN61R0OEToyc9CIab1N
fFPve9HGDGrKGYI2xIZDj1g0/YpVvHizoPQmjkhcgffw0DLtIcdqKmZwWURQkKdA
P22GGARM8LLaHTGj2/AzuU5CZGNEMPcva3YNWgQk9hY+0unXuv/T4vdgT/3FbwuH
7XVLuu4g+czlbMzruU+Yy54s1vyp1W4/NraAq8T9qVUYBLtp1Uvzw2vJ4MQIXdae
NRvgRqXWpRHggyeaD/2DrO1wXAB4YY+sTuLY/Exugh8G057soGHwiQNa6myP6enc
wLAmWU0lp3ebW91iAj5jD5qhwJCSp6xNbr10ujDrq/YKK0BUm9dFH31bmQB68DQk
uQIDAQAB
-----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 357474734552123728384791490637178039769412
 . . . . . . . . [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 2023-09-21 20:44:39 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-20 20:44:38 +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 30874871418674330599856582475032938667375268619443001630863980336265595132255055319191643458111097912849518683644418268103987213994455977559607858848119842980533392049063729003920357542074988987461137585846020662431659934377838370289619002655875385799518291331039036698807426681817568646147255938646103126008097680224992782780625624378043298116774876838353123724342507002380006971784078794529182989372683470709944523843444459913842097363110245276310289984800758291731507727636966622104526315616493280025870076217545288249244971934789372294783507838417764757756356243493322858302549568740438214483485562672125977044153
 . . . . . . . . . . . . . . . . . . . . [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)
							2d41c66ac2339bc89b7d2cf897df671c902b7bf0
 . . . . . . . . . . . . . . . . [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 (109 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cuonline.edu'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cuonline.ucdenver.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.cuonline.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 (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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007700b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018ab9b3bee800000403004830460221008cca655039c1143deec4b40949ddff91bf2a5250648af31e84668047e00d60cd022100d059ef34d67b7b73a035970e08a6f7e4098762d3e2cb30b4e4189ec60ca817b2007500e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e0000018ab9b3beec0000040300463044022056f0ae044ba668454bb2de117c0c6d46521f68ae585b3a431b69dbeb4ae0378c02205791ed69f321d61bc6bdfd878494db4aba38be9d119fdcedaf4eb24d74bcd8b6
 . . . . [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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