www.designsforlearning.nu

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:90:13:72:9b:e1:8a:64:38:ea:8c:6f:44:67:d5:d2:8d:f7 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=www.designsforlearning.nu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:90:13:72:9b:e1:8a:64:38:ea:8c:6f:44:67:d5:d2:8d:f7
Serial Number (int): 310363369047300320274967346077320946552311
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 74:53:23:c5:c3:37:dd:82:8a:e2:36:72:a6:0e:de:6e:d8:9a:57:3b
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 70:c4:0e:c6:68:f9:a6:7b:14:77:f4:f6:03:b4:d4:dc:f2:0f:04:78
Fingerprint (sha256): 9b:ed:6f:5e:8a:17:d8:08:d7:f0:a8:59:55:52:f1:88:48:48:d7:f9:58:43:48:a5:81:02:46:bd:cf:5b:9e:8e

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate www.designsforlearning.nu

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.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

dfl.ubiquitypress.com
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 www.designsforlearning.nu in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA67/9DtcQ/2btI9cqAdNf
0xNt6aM8SN82wH+Z1Ylfe81PKqqh9BwSWzlq+WXQs7R0detBbYMsheXshldlaeXj
Lu79t5Xd1GePDq15ORzIiklmkc4T0Ri2do+enPD+BaPzTB4K4F07Ikr9XvHS8jtZ
pkLgaiDmppNC/iDCuJqMIpOa9mCHymkveNVJqU60WvirjcN2fx9cdcG/AOIrkdDE
JBcWB20oHHoiiAdzCU7Y6Ahxp6YHpymXmIxr5KyZpTY3d+XAJfZaMfYB9VBD2n1r
+5AwNeaHsp92Va7VA3lz3/4v4H++aszrdzn+60aJYUMo9hUz1L3i5BbNZG7RghMO
yQIDAQAB
-----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 310363369047300320274967346077320946552311
 . . . . . . . . [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 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-12-03 11:10:07 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-03-03 11:10:07 +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 'www.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 29760674728680032390366577376816864058526665974915455066485732644981516799401487028433798175038070989167421315998998579520758449555124545101033762573330790685992225305501948944155186726114743331549019309313419364044194771974930257610478557019779482192932603072927779392202138899696633943999921778619077138203427967884500227765301588438898472215360936221158891333934408976733708186399743920460556671477366309712458807694535438327808307512609543879135015964549010775571736312890678736184732362255831888334225477752678008588260096494060788476427798531846467842353644264635174267775876414953305718736822706513838504873673
 . . . . . . . . . . . . . . . . . . . . [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)
							745323c5c337dd828ae23672a60ede6ed89a573b
 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 'dfl.ubiquitypress.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016773f9c4140000040300463044022011ea39eddfd028edb80e05aac775752d03c3f0c8b412db650d72c86202e7bebc022011fbeacf5615ff936d816541d034ddc7be3190b7816d1c4b9c3e8991b1068b2f00760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016773f9c6020000040300473045022100ee8f2eae247f2a5189f38d9b091fb54ee8f38b74130ad715d08c23075642cfe202204189914eec2a9c6c8f2e0b3a105395afce21204a2da6a1d75f37f225a674903f
 . . . . [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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