cuonline.edu
Issued by R3
About this certificate
This digital certificate with serial number 04:8b:50:fd:c7:5c:de:60:e9:01:2d:92:f0:49:69:00:93:18 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): 04:8b:50:fd:c7:5c:de:60:e9:01:2d:92:f0:49:69:00:93:18Serial Number (int): 395856048663376760496513867461284308488984
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 9a:fd:9c:5c:25:27:f7:3d:a7:63:fa:00:6a:0c:82:e1:98:41:d4:9a
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): 68:dc:65:0c:c2:c9:95:5c:25:b5:b3:cc:7d:33:7e:19:9a:08:63:a7
Fingerprint (sha256): f6:8f:bd:0c:e5:07:eb:de:75:77:57:96:75:02:cd:c6:8f:53:e9:a1:3c:9e:13:81:2c:48:bc:41:14:31:84:6d
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck 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
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
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----- MIIFQjCCBCqgAwIBAgISBItQ/cdc3mDpAS2S8ElpAJMYMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzExMjAyMDQxMjhaFw0yNDAyMTgyMDQxMjdaMBcxFTATBgNVBAMT DGN1b25saW5lLmVkdTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMB0 p3pr9MGc3FwIDJAUF87cIzRxax6SLOWsa8863ZcO0/hmQECz4lL0mZhd0nEUNTYu +zO8L74/FioBJupJpCBrKhK9TcFTv/TPm3y+Hj8tcsFfO1se2TlVSuCViTKnLTrV mcpyc941+uzXWtPvQfvuPzeEwGi6VJ8bvN5jGky/pf/MmIp9IiLccWd2ETLy/KDD vQVqhYoIQkrM3yKUbnxh46RHqHSWXu2i4uw3Hj78Ml2Vov2pdWEHgnRZK6ZHIJPJ soT/wD80I5N23SgJcCkA3b0EeGN2/mzCVYmw1la1aoy8/sm6WgCYjoyjpqfTQwui 2Tybo1bBPpr2EfMtmVUCAwEAAaOCAmswggJnMA4GA1UdDwEB/wQEAwIFoDAdBgNV HSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4E FgQUmv2cXCUn9z2nY/oAagyC4ZhB1JowHwYDVR0jBBgwFoAUFC6zF7dYVsuuUAlA 5h+vnYsUwsYwVQYIKwYBBQUHAQEESTBHMCEGCCsGAQUFBzABhhVodHRwOi8vcjMu by5sZW5jci5vcmcwIgYIKwYBBQUHMAKGFmh0dHA6Ly9yMy5pLmxlbmNyLm9yZy8w dAYDVR0RBG0wa4IMY3VvbmxpbmUuZWR1ghVjdW9ubGluZS51Y2RlbnZlci5lZHWC EG9ubGluZS1kOS5jdS5lZHWCDW9ubGluZS5jdS5lZHWCEHd3dy5jdW9ubGluZS5l ZHWCEXd3dy5vbmxpbmUuY3UuZWR1MBMGA1UdIAQMMAowCAYGZ4EMAQIBMIIBBAYK KwYBBAHWeQIEAgSB9QSB8gDwAHcASLDja9qmRzQP5WoC+p0w6xxSActW3SyB2bu/ qznYhHMAAAGL7q5k6AAABAMASDBGAiEA0wnSAHhjeGlwKTbZpBB1hmJKrF7gbAtg vUlRycUAPfUCIQC9HjADnEdWNZF4WTztBT1NDXkLlrGAUXK44ysGBtk97QB1AO7N 0GTV2xrOxVy3nbTNE6Iyh0Z8vOzew1FIWUZxH7WbAAABi+6uZO0AAAQDAEYwRAIg d/0F+x1B2Q5oFsUAvyHKZifqg0IbRaJtOgEi/z7lkGsCIBM3WpCrlm5mN1CArY8i zAXvxaJjtyC7YUzRgtzm8BsMMA0GCSqGSIb3DQEBCwUAA4IBAQCpFOy/BWC1irOP BLPTCjIkP9LqKJhg+Kcd1h8jcVbgov2RB6uWMRTT859d9ZBBQzyk+w1K0GDWaHEt 3bY7aMjA0Cl6l6d9ONZe1/AWhSl5YkVDRkj1Vgdx8XeyAo93fkMFK3NS3eG0Yby9 bRuPP5lPZejse7p+7gHq35dp+N7geXSopZzOgsjlFpVUqylbPFHr6+ZE0wLZDmie eCG6nPFB84dANXBchAv6Rr5kJjCzayyhQMe9KfQwKNV0o2XtUvdYZG1JRC8tNNIk 2XrdKiPoaUAFnkGAgJ69h5Dzj3gALGKtPE9hheFTyg6gULOCkdYwp5/y0Mu2yttW my3esZ9O -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwHSnemv0wZzcXAgMkBQX ztwjNHFrHpIs5axrzzrdlw7T+GZAQLPiUvSZmF3ScRQ1Ni77M7wvvj8WKgEm6kmk IGsqEr1NwVO/9M+bfL4ePy1ywV87Wx7ZOVVK4JWJMqctOtWZynJz3jX67Nda0+9B ++4/N4TAaLpUnxu83mMaTL+l/8yYin0iItxxZ3YRMvL8oMO9BWqFighCSszfIpRu fGHjpEeodJZe7aLi7DcePvwyXZWi/al1YQeCdFkrpkcgk8myhP/APzQjk3bdKAlw KQDdvQR4Y3b+bMJVibDWVrVqjLz+ybpaAJiOjKOmp9NDC6LZPJujVsE+mvYR8y2Z VQIDAQAB -----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 395856048663376760496513867461284308488984 . . . . . . . . [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 2023-11-20 20:41:28 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-18 20:41:27 +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 24295278889261962340330570593076765092564594026629510040566849443941721212705222905469227342749655760761925628146467776896918161669177237506061638055976839317974540229085566909601290432792766688540743857041618507082302908209321494362376641574366690514136936988276436757394515726000349835912320682069511736058985263380188984941851626522348036976567257123937402752130277851931257557691396509910741392947845349707974538616547869499133806197294376341097227039876415788275764051935080580783290065738507278734728703160147978353048962982659390140744073959855669537306275821116832669307766091573181749448001568724078979553621 . . . . . . . . . . . . . . . . . . . . [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) 9afd9c5c2527f73da763fa006a0c82e19841d49a . . . . . . . . . . . . . . . . [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) 00f000770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018beeae64e80000040300483046022100d309d20078637869702936d9a4107586624aac5ee06c0b60bd4951c9c5003df5022100bd1e30039c4756359178593ced053d4d0d790b96b1805172b8e32b0606d93ded007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018beeae64ed0000040300463044022077fd05fb1d41d90e6816c500bf21ca6627ea83421b45a26d3a0122ff3ee5906b022013375a90ab966e66375080ad8f22cc05efc5a263b720bb614cd182dce6f01b0c . . . . [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) 00a914ecbf0560b58ab38f04b3d30a32243fd2ea289860f8a71dd61f237156e0a2fd9107ab963114d3f39f5df59041433ca4fb0d4ad060d668712dddb63b68c8c0d0297a97a77d38d65ed7f0168529796245434648f5560771f177b2028f777e43052b7352dde1b461bcbd6d1b8f3f994f65e8ec7bba7eee01eadf9769f8dee07974a8a59cce82c8e5169554ab295b3c51ebebe644d302d90e689e7821ba9cf141f3874035705c840bfa46be642630b36b2ca140c7bd29f43028d574a365ed52f758646d49442f2d34d224d97add2a23e86940059e4180809ebd8790f38f78002c62ad3c4f6185e153ca0ea050b38291d630a79ff2d0cbb6cadb569b2ddeb19f4e