designsforlearning.nu

Issued by R3

About this certificate

This digital certificate with serial number 04:95:2a:5e:c6:5d:04:ba:64:58:dc:c5:6b:ca:1c:74:29:11 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=designsforlearning.nu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:95:2a:5e:c6:5d:04:ba:64:58:dc:c5:6b:ca:1c:74:29:11
Serial Number (int): 399207536073275270293972387324933092682001
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 4b:f1:4c:51:4f:2b:0e:34:df:f5:66:f0:eb:74:ae:0f:2e:26:89:c2
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): cd:81:c6:3a:0f:13:86:bf:59:2d:86:f9:40:2a:1e:90:a6:0e:39:1f
Fingerprint (sha256): cd:cd:4e:62:44:5e:82:a4:43:be:11:17:1d:f0:bb:ac:94:07:93:79:f0:ed:c7:3d:93:57:23:09:61:b1:ce:5b

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

Revocation information

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

Check the revocation status for certificate designsforlearning.nu

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for designsforlearning.nu

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

designsforlearning.nu
www.designsforlearning.nu

Other certificates including the domain name designsforlearning.nu

(limited to 100 certificates)
www.designsforlearning.nu
www.designsforlearning.nu
www.designsforlearning.nu
www.designsforlearning.nu
www.designsforlearning.nu
www.designsforlearning.nu
dfl.ubiquitypress.com
www.designsforlearning.nu
www.designsforlearning.nu
www.designsforlearning.nu
www.designsforlearning.nu
www.designsforlearning.nu
designsforlearning.nu
designsforlearning.nu
designsforlearning.nu
www.designsforlearning.nu

Certificate

The complete raw certificate details for designsforlearning.nu in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApTtZ9l4dXhnuCVORhQpd
ttC18g+5HSh7OUzHoyztrUcsor5tnDDxtq7i9/MgMP7zdbmaQ8Bh8eObd7oAxxPa
UrAqsjvWwJ2unFtM2j6SWIhWZLuU0gqt2VOUp/HhStTyEDlluTFKLBncfdfkYaR2
F+SN4Sve3UqxAA1nU4N3rz8s+3mPikNVDFyVyHzUO5GHi8E0E/RlXrNc0hpwMyyJ
MjL1pXMeYRuIjEvCLkKGkjDaAJ8VdnDmBCzm4ESYCZGcj3m06MWo5yKlCeReMy7d
0Sai4xmqmDGWlZxxbFnHiUXN6ONUu360UR+ZOs2sLrz7Ks9eLA2i6Bu1ZytHkfMX
twIDAQAB
-----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 399207536073275270293972387324933092682001
 . . . . . . . . [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 2023-03-09 08:43:39 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-06-07 08:43:38 +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 'designsforlearning.nu'
 . . . . . . . . [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 20858587593199696856497708920703873268728630969772280629506361274370244924698958577010341424462978342314059900828447161814893922523116758619977247137205636547206706902231761268784181090177072626002871352986690214494591504082439410049922393245785810959326228429863562833297774613882137094472881168949431343132480047060742711440772075039644147006144011363029346243114610053912883666013709794352226648628733143177954412133383613547480338358825154577316264852023282918354155940100730603961604681059029462761070043816921194308988052261651648775086789977764230941232611941051634483088404604339009753546260135298922768963511
 . . . . . . . . . . . . . . . . . . . . [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)
							4bf14c514f2b0e34dff566f0eb74ae0f2e2689c2
 . . . . . . . . . . . . . . . . [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 (52 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'designsforlearning.nu'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.designsforlearning.nu'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb49900000186c5c138d30000040300473045022100f5347851ba0adb443b1921c71885e710867c3945778d20cebcd8326fc5069f6d02206722bf74b239dc2f21598a83bde0753c31738d7131db9623e7385e57ca9cf7780076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000186c5c138e50000040300473045022100adea06f4737abb545ea3e848ead2832f9eeb4f13fd6221ab4f6bd8ae544634db0220739891c1011873fd559c0524d1d70016fb43f37d0e128645b86d37db1b9538e6
 . . . . [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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