letsbuildutopia.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:67:5f:8d:56:0e:95:a7:30:db:a8:66:8d:a2:74:da:ba:d3 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=letsbuildutopia.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:67:5f:8d:56:0e:95:a7:30:db:a8:66:8d:a2:74:da:ba:d3
Serial Number (int): 296512952107036757672264943459724802308819
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: ee:9a:b2:13:24:0f:22:d4:62:10:d6:ba:52:4d:06:56:76:50:1e:ce
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): bf:a8:77:bc:31:4d:d2:d0:81:31:80:18:dc:85:aa:d0:c1:1e:7c:e1
Fingerprint (sha256): 6d:c7:45:53:1c:65:9c:b0:3d:fa:40:d7:b5:23:33:7a:ce:0d:d9:3e:7b:f5:33:83:7c:23:1d:3a:50:04:51:a2

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 letsbuildutopia.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for 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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

letsbuildutopia.com
www.letsbuildutopia.com

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Certificate

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

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFeTCCBGGgAwIBAgISA2dfjVYOlacw26hmjaJ02rrTMA0GCSqGSIb3DQEBCwUA
MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD
ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA4MjMyMzI2NDhaFw0x
OTExMjEyMzI2NDhaMB4xHDAaBgNVBAMTE2xldHNidWlsZHV0b3BpYS5jb20wggEi
MA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCs6Yeq7vFbFCxhhJL1OfNMCPJA
NM1XUXgkiU8CuVpoXkJ0sjcYzUbW3LNOnyOtzb8DW6OWF0HNiFEDL8p5h5PTX3Ox
x+0v6VcjXw0MsgdJs2igIXRp7/4n0Bhk2d9ym1ZdxC4B6CUQuTh5E4SC/HRBmvfa
1O/IQmnr9lU16CY/RLYPlJDS2Bo1HRVDS0igafdIw/xqMFljNY+u3jkPt5yUnyIF
KT8/eajx4r1ksagtnfKRs2tjB7+HUqUWuaja8jM3Iy+b+qp6RSTiI8a//XnVgueI
1HbrFr1Na5egtR5cXtX6LTceU3XbllWyEIJQclEONjOx/Tiu2rkkN3DdX9ZZAgMB
AAGjggKDMIICfzAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEG
CCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFO6ashMkDyLUYhDWulJN
BlZ2UB7OMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsGAQUF
BwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNlbmNy
eXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNlbmNy
eXB0Lm9yZy8wNwYDVR0RBDAwLoITbGV0c2J1aWxkdXRvcGlhLmNvbYIXd3d3Lmxl
dHNidWlsZHV0b3BpYS5jb20wTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC
3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcw
ggEGBgorBgEEAdZ5AgQCBIH3BIH0APIAdwDiaUuuJujpQAnohhu2O4PUPuf+dIj7
pI8okwGd3fHb/gAAAWzBBLyyAAAEAwBIMEYCIQCj3H/iE3qCi/VvKCyrmuTTSlGb
30KO1JsR7n1wiu3JCwIhAIU2qe2ZpgyEeDkm6pE0eMJGGAKxmuQw+mOcjypiHcGs
AHcAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFswQS80QAABAMA
SDBGAiEAl5SSVXpBarg/tLj8Zt9Vo9xcNtZ/6piKEXFaUnsal7ACIQCFVs5QXSUZ
irDTvKezo4zwEhPjm2IYbfvZoghfzikWszANBgkqhkiG9w0BAQsFAAOCAQEAY5n3
Se2Y0MLDUXqjpN1zAoYWtnfPlI57v2p7KPyu+NdpL2dP0bAGtnpVe2UkaCOVRcKQ
spYdsmT0zddIrhVqtUGw3zLh9N9vSaGr5JYCRK9AyP+wq4epcUqxGKd2eNTYckDP
Q7QUOMnttGlVx7L7aaqbHEHF6kV56MiHu/hofp55W/Zd+pL0U8QalbpmVaACAUwn
b1Yiqb0ss0J0v+8jza/DnD/dV+FfQ5jta4/bKJp9kzrj/94QW778FqDllo54Lz5K
ottSn1olRrgbrtAj3gjJksJxuycd1kpkcxznjjMQoRGxGs21EwCLw+SE3i7Edjfq
6cj5CuNkXf1y5ipsQQ==
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArOmHqu7xWxQsYYSS9Tnz
TAjyQDTNV1F4JIlPArlaaF5CdLI3GM1G1tyzTp8jrc2/A1ujlhdBzYhRAy/KeYeT
019zscftL+lXI18NDLIHSbNooCF0ae/+J9AYZNnfcptWXcQuAeglELk4eROEgvx0
QZr32tTvyEJp6/ZVNegmP0S2D5SQ0tgaNR0VQ0tIoGn3SMP8ajBZYzWPrt45D7ec
lJ8iBSk/P3mo8eK9ZLGoLZ3ykbNrYwe/h1KlFrmo2vIzNyMvm/qqekUk4iPGv/15
1YLniNR26xa9TWuXoLUeXF7V+i03HlN125ZVshCCUHJRDjYzsf04rtq5JDdw3V/W
WQIDAQAB
-----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 296512952107036757672264943459724802308819
 . . . . . . . . [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 2019-08-23 23:26:48 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-21 23:26:48 +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 '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 21828146365480630419895126428335139139728813735725771648853410089698944184138400159774857814000406710198167467429502144438052588488352178921381071117856395022582113187342526156602093837981599650420896035942734599333633278330492177388801686138133137500949255639690776070523259238409912939243419714078372050911125809882608565477390337435752610656332063545376931375572446335016236010061959707284199046852256379972765749161656237153652182283674574067009615635660980249336279055915862024436363737495213096750131614931325012608350975021804784297123858131215983391388855850609817824948252776752177143441282841676875311339097
 . . . . . . . . . . . . . . . . . . . . [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)
							ee9ab213240f22d46210d6ba524d065676501ece
 . . . . . . . . . . . . . . . . [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 (48 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'letsbuildutopia.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 (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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f2007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016cc104bcb20000040300483046022100a3dc7fe2137a828bf56f282cab9ae4d34a519bdf428ed49b11ee7d708aedc90b0221008536a9ed99a60c84783926ea913478c2461802b19ae430fa639c8f2a621dc1ac007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016cc104bcd10000040300483046022100979492557a416ab83fb4b8fc66df55a3dc5c36d67fea988a11715a527b1a97b00221008556ce505d25198ab0d3bca7b3a38cf01213e39b62186dfbd9a2085fce2916b3
 . . . . [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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