askus.library.citadel.edu

Issued by R3

About this certificate

This digital certificate with serial number 04:ad:83:84:69:b1:16:6b:9b:94:0b:f4:20:b2:e5:59:e6:7a was issued on by Let's Encrypt.

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=askus.library.citadel.edu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:ad:83:84:69:b1:16:6b:9b:94:0b:f4:20:b2:e5:59:e6:7a
Serial Number (int): 407492809598679823250683504788676514801274
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: a2:5a:35:13:6e:fe:c4:80:ab:64:02:9d:75:5e:24:b0:a2:f5:3a:f0
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): bc:be:2a:50:47:1c:fe:f2:ea:29:b9:2b:fd:3f:58:73:2b:87:b9:f9
Fingerprint (sha256): 5b:52:ed:23:75:cb:9c:ca:a8:70:16:2b:3f:5e:f3:79:5f:23:61:17:60:12:88:0f:47:e4:80:17:0e:d5:55:af

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

Revocation information

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

Check the revocation status for certificate askus.library.citadel.edu

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for askus.library.citadel.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

askus.library.citadel.edu

Other certificates including the domain name citadel.edu

(limited to 100 certificates)
radius01.citadel.edu
cfprd.citadel.edu
2008dhcp2.nation.citadel.edu
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banprdssb.citadel.edu
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dhcp-citadel.nation.citadel.edu
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library.citadel.edu
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dhcp-ladson.nation.citadel.edu
apply.citadel.edu
foundation.citadel.edu
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banprdssb.citadel.edu
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brand.citadel.edu
banprdssb11.citadel.edu
*.citadel.edu
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campuscenter.citadel.edu
campuscall.citadel.edu
coldprd.citadel.edu
cfprd.citadel.edu
citadel.edu
foundation.citadel.edu
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sioux.nation.citadel.edu
banprdssb11.citadel.edu
today.citadel.edu
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mag.citadel.edu
foundation.citadel.edu
*.citadel.edu
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library.citadel.edu
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jobs.citadel.edu
askus.library.citadel.edu
citadel.edu
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foundation.citadel.edu
2008dhcp1.nation.citadel.edu
today.citadel.edu
libcat.citadel.edu
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foundation.citadel.edu
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askus.library.citadel.edu
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library.citadel.edu
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ad01.nation.citadel.edu
*.citadel.edu
mail.citadel.edu
mag.citadel.edu
libcat.citadel.edu
hrweb.citadel.edu
foundation.citadel.edu
*.citadel.edu
today.citadel.edu

Certificate

The complete raw certificate details for askus.library.citadel.edu in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIE/jCCA+agAwIBAgISBK2DhGmxFmublAv0ILLlWeZ6MA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzA5MTUxMjA0MTNaFw0yMzEyMTQxMjA0MTJaMCQxIjAgBgNVBAMT
GWFza3VzLmxpYnJhcnkuY2l0YWRlbC5lZHUwggEiMA0GCSqGSIb3DQEBAQUAA4IB
DwAwggEKAoIBAQDTj0c/9Evf31s7cYsMLqXb4mTWClY4TT7rDfOvhph4Afi69GDv
ZwOGaHDfxnbBhJ4Wo99hqOxEz1EjOY2OMBbjYfzyFjkrK38WM6zACBuKmwkeKrIt
dK4O9nq5ZTfj6DY39F+4X1lmC3dDCHFJIJeNADC0H2HqYvqcr6xT2TOHCom0u6Ia
yGGyHcUCt7xpLtAypLVolgVkQ9R2dSn4L4CRjWrelR/coug6qFWYr1sjOmKGgcub
t8d8pDGSgNiUHzD9uxKJORuF4wzsUr/yLA9WGNZXBP4CWkD3TJoww7CUtLhrOb+x
7Iek3ePQ77kD0v08PRJRcHIsWXVmmoB1DsDvAgMBAAGjggIaMIICFjAOBgNVHQ8B
Af8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB
/wQCMAAwHQYDVR0OBBYEFKJaNRNu/sSAq2QCnXVeJLCi9TrwMB8GA1UdIwQYMBaA
FBQusxe3WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcw
AYYVaHR0cDovL3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMu
aS5sZW5jci5vcmcvMCQGA1UdEQQdMBuCGWFza3VzLmxpYnJhcnkuY2l0YWRlbC5l
ZHUwEwYDVR0gBAwwCjAIBgZngQwBAgEwggEDBgorBgEEAdZ5AgQCBIH0BIHxAO8A
dgB6MoxU2LcttiDqOOBSHumEFnAyE4VNO9IrwTpXo1LrUgAAAYqY8R92AAAEAwBH
MEUCIQCsrT3V7Pb3VH5/C7RzKRBAICjVfJO8X6JyAbnfAGsJ4wIgdaUK71Xm+guz
pkAH/WS6h/3ImuHHnCqVzJXHHf1paj4AdQDoPtDaPvUGNTLnVyi8iWvJA9PL0RFr
7Otp4Xd9bQa9bgAAAYqY8R9fAAAEAwBGMEQCIBH9V8fexBqYMBHztxRtLQqBlQxg
RavsgTzoqGiuz5xHAiBBjAOfuTAGfrEmz0P4w+yAoZQ2t2yd//WyYJPxvOWgPjAN
BgkqhkiG9w0BAQsFAAOCAQEAo5WU6cK5UtFE8yK41Wl1+jV9IIly9v40Ut//FDo9
gI2IAn45eeNBU+RfgNG2U6RJnQGUgVCQEGknoOH0PbBykfzmG0CbX0mYH78qMTBI
h389uT/31bAvcaeqUvqS3jRWkQSFt72GeR5t04IqTYWslrjzwdgAC88/e0kJpZco
qkPXnBL6Srrmt8tRrVrMVbdAZlZErc+BKb+cb5a0tWqwN+kr5+ZHwNgImvR6060K
ztnWW2eweDUpjzKfvVmcNZP0ShUkIp2AC2ZbcfyPL6uQT5FS6Z9OWxy34/TEP0Cy
3RRqR5IjrZIjO9xTiHEJ4iLZxPWDdxY2iPLCx3bJUpgdeQ==
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA049HP/RL399bO3GLDC6l
2+Jk1gpWOE0+6w3zr4aYeAH4uvRg72cDhmhw38Z2wYSeFqPfYajsRM9RIzmNjjAW
42H88hY5Kyt/FjOswAgbipsJHiqyLXSuDvZ6uWU34+g2N/RfuF9ZZgt3QwhxSSCX
jQAwtB9h6mL6nK+sU9kzhwqJtLuiGshhsh3FAre8aS7QMqS1aJYFZEPUdnUp+C+A
kY1q3pUf3KLoOqhVmK9bIzpihoHLm7fHfKQxkoDYlB8w/bsSiTkbheMM7FK/8iwP
VhjWVwT+AlpA90yaMMOwlLS4azm/seyHpN3j0O+5A9L9PD0SUXByLFl1ZpqAdQ7A
7wIDAQAB
-----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 407492809598679823250683504788676514801274
 . . . . . . . . [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 2023-09-15 12:04:13 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-14 12:04:12 +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 'askus.library.citadel.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 26706935520520289022267509464204828108862936934620235110564177514647626138706553090762834827964876093111010038963641767675718578182356377397922609863815484371609061967181003674959039685693971990593426653183982965462360601197716349773073733409568591328670992259318385762235951399958352607345600096244385366073871664809901502053828512206046413191159382943693725026338015040001779040008381331165139666462406825440623034771404051943331218231895360135752047086189058122694435795410804568892580182774410482398375451387291544089007322213922177823347399754351327199482321813654601272735320846792043467411284861763733175582959
 . . . . . . . . . . . . . . . . . . . . [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)
							a25a35136efec480ab64029d755e24b0a2f53af0
 . . . . . . . . . . . . . . . . [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 (29 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'askus.library.citadel.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018a98f11f760000040300473045022100acad3dd5ecf6f7547e7f0bb4732910402028d57c93bc5fa27201b9df006b09e3022075a50aef55e6fa0bb3a64007fd64ba87fdc89ae1c79c2a95cc95c71dfd696a3e007500e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e0000018a98f11f5f0000040300463044022011fd57c7dec41a983011f3b7146d2d0a81950c6045abec813ce8a868aecf9c470220418c039fb930067eb126cf43f8c3ec80a19436b76c9dfff5b26093f1bce5a03e
 . . . . [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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