www.letsbuildutopia.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:b0:f9:bc:d9:79:92:1f:24:4a:3e:4e:30:29:a1:01:ab:2e 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.letsbuildutopia.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:b0:f9:bc:d9:79:92:1f:24:4a:3e:4e:30:29:a1:01:ab:2e
Serial Number (int): 321558512707040472225520374409415094283054
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 92:d3:99:25:ac:24:cf:2e:f6:db:6a:20:5c:32:b5:94:57:da:fa:2a
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 3b:9c:70:40:24:52:7c:ae:ac:11:3f:ec:09:6f:d8:0b:4d:6a:d3:56
Fingerprint (sha256): 90:0a:15:fa:b9:01:16:89:b6:59:50:49:d9:1a:28:91:49:d2:65:19:e1:65:b6:ab:f2:e5:6c:74:d4:c7:56:81

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.letsbuildutopia.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.letsbuildutopia.com

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

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

www.letsbuildutopia.com

Other certificates including the domain name letsbuildutopia.com

(limited to 100 certificates)
integrarealtech.com
letsbuildutopia.com
www.pspkdevtest.net.au
zupet.my.id
letsbuildutopia.com
olimpus.diamondeducationinstitute.org
www.letsbuildutopia.com
redirect.noreply.link
shipperperu.com
www.letsbuildutopia.com
www.file-translate.com
www.letsbuildutopia.com
www.file-translate.com
app.exammia.com
tabletopsy.com
letsbuildutopia.com
www.letsbuildutopia.com
agorapacific.com
letsbuildutopia.com
letsbuildutopia.com
letsbuildutopia.com
link.my-doc.com
www.aspenbiosciences.com
www.letsbuildutopia.com
www.stevemasson.co.uk
letsbuildutopia.com
milifestyleadmin.eduswitch.com
letsbuildutopia.com
dev.letsbuildutopia.com
wordle.ai
demo.dashboard.sgl.io
www.letsbuildutopia.com
korona-desinfekce.cz
tabletopsy.com
www.letsbuildutopia.com
www.letsbuildutopia.com
firebase.richardschop.nl
tanriverdihaciyev.com
letsbuildutopia.com
kamilo.dev
insights-qa.spafinder.co.uk
www.letsbuildutopia.com
www.thecityflyers.com
minardidarmawan.id
www.lernoos.net
manage.studyfind.org
partners.gideb.com
acerbastimur.com
gp.garage.startupspace.com.br
www.letsbuildutopia.com
www.letsbuildutopia.com
smoothies.nakalua.com
www.bumblebee.io

Certificate

The complete raw certificate details for www.letsbuildutopia.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0VAtjeFqteM5mzEqYmSR
nqP9KRwMzvB2kvUHQoBdP3RhxQf1J/ae4AHgu8qEorPucwN/mn+RMh938IkToEAT
IYrgBSSI2vzTDfPwLKA5SFGroCDmdJP8sjreyRSgVfZIRRiQ7nr1Fu8aVFqxuKEF
4HT5F7yLkAIrEsVzEEkhZpJvyeIDYyJL8H8hV+H5WZL4RdQvzGPqe5sG8gW9iAOr
3OjAwZ72olqI41NHzBX1KjbVM3vMeY4O+atIic73CK+O0owOT76CoQO9Fb7ZsASL
vbtCmWsFnc8vCHEB4WilR6IisbviAMjBKPD0V7qZX+Fb+UoFKJpnRx7/WZepEnBG
JQIDAQAB
-----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 321558512707040472225520374409415094283054
 . . . . . . . . [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 2017-02-12 02:06:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-05-13 02:06:00 +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.letsbuildutopia.com'
 . . . . . . . . [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 26423342956737543508235485240598448140529054227242319422133856727070060277539740501254474585307956858400513351601201714963305514931935078623484546360571155191661656149539188981547725196765845434412610780328484597207478919720479489741116253792742377006323118229896214272541346563416130745901886357086351241624599198832527823659876687053330624455017847274117679112153503818610635581641580609611878731318134556432726253236266613878621417054011957706732394166679458213635087079849833268220216982263957961309294338692659439140321666792318438080814412242134722989742143433858024011218886696935116884837030767540899874358821
 . . . . . . . . . . . . . . . . . . . . [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)
							92d39925ac24cf2ef6db6a205c32b59457dafa2a
 . . . . . . . . . . . . . . . . [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 (100 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 (27 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.letsbuildutopia.com'
 . . . . . . . . . . . . . . . . [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 (246 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 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . [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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