www.designsforlearning.nu

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:72:6b:bf:c7:4f:3e:01:60:32:2f:b6:4d:bc:b5:01:e7:bf 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:
  • 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): 03:72:6b:bf:c7:4f:3e:01:60:32:2f:b6:4d:bc:b5:01:e7:bf
Serial Number (int): 300272270790994416624291158059361377576895
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: bd:c0:58:a2:34:b7:a7:92:45:ce:cb:15:a4:27:94:81:1b:38:fb:28
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 70:23:7e:66:1e:c3:35:40:e8:6b:03:97:00:f0:46:ab:1d:91:3b:9d
Fingerprint (sha256): 74:57:f6:23:ce:7d:d1:e6:31:2f:35:17:d7:a2:3d:30:3f:e0:45:49:7d:40:22:23:68:8f:61:11:00:8c:9e:55

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

1

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

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxfHqlmLI+yz+01iUxkIo
q+0hCZYFmFGeqNpkFXyg45PqRk+m4EEp/3asWAOHX9luboDnqIq3Mamxb1CBCAB2
24j5j90ydOqUiF2B18dkhq/nDmtTHE4U35jM12jZ8Umd5hD5IIu9GssypI7ioFJA
GMq9ijTrfBlYFTE6VE+4wwqa88utSrJtysDzyMUd0soKAU54WFweRMu2RrutiV8y
jmh/DHJsWVwWrDaGFareREi0HuW1IlgtnBlEBsMONRchJOrQCnlvjZzWUBKmIrMm
GojmIbpTou4Qsm5s1M1eYgvaax/sudkmkngcrfZ4EVhF48ePegF1VAg2L4n44vw+
SQIDAQAB
-----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 300272270790994416624291158059361377576895
 . . . . . . . . [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 2019-07-15 22:31:01 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-13 22:31:01 +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 24988239480178004250344402795685241583122787603264274489113391528600693892092685049378626822428089365338441685306397361319044398866673504553186199628097066815312929218087232064954241452598802941069570096629824714092210095147969894813387495510359911566821849213784657887866875630274952588630194831406697616715890305102402729609525242501417572038049883009106641167643842028279076254119102053338079989939297642704827032424198362917930128542818349262455545531226431041504176841523534548812638909563773070131305904734787965464708930260357130450985236391250939861917512579523747455904638080781055897964542165650385787436617
 . . . . . . . . . . . . . . . . . . . . [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)
							bdc058a234b7a79245cecb15a42794811b38fb28
 . . . . . . . . . . . . . . . . [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 (29 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016bf7f9a6e0000004030047304502210083d26377e913999d433fcff5c274620fd38916b0540ca5b7e9f4d94bda6f8be9022008dd99f6749ccebedd1919574923e09d32626ef7324a118d90b11e686ca29bd500770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016bf7f9a4e10000040300483046022100cf6015d83cf2f7ba3372362a5d78910da0cdb2a1dcd7badc4348dab304457ed5022100b386b1cf66bcacb97b5a5c03b0fccdd2f859293ec31711e095a35f89de2f648a
 . . . . [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)
		00155df178ba86c8a657a80031f813420e2455b8da931fb590879a6e908e7015ff0b96288f16cdfdabeef28f53946ddc1f59b30123f4ee1579a9036542d985e180ce457affab48b31af5aa809606100f342607a1a013bcc1f64ba77227ff6150a49484d7a65832be6630264eaea8087e7ad83134227a40831528c1d5700d659708a5509973b669f89a3a90eac70c0323c43e44e6478bd94f97511ef6b115ce6e41080edb2fb20a6c7bee81db7950b72bf21f2b886f16b5e83bcc6d796ff44b6cfca02d854e3b2392e78c0c1883ab1f77ec5454b63cc1cae137637ea42d7012210aa8d327c9e2c52757c9b37999343735c5137553046f17bc52d1e6f7c3c45382a6