www.spraytexture.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:19:83:b6:32:42:6b:cc:eb:2a:8e:0f:22:4b:fd:c9:2e:de 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.spraytexture.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:19:83:b6:32:42:6b:cc:eb:2a:8e:0f:22:4b:fd:c9:2e:deSerial Number (int): 270018991853163180380419030917512730062558
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 67:d5:32:2a:81:41:6a:64:3e:0d:27:3b:bb:2c:78:bb:9a:b6:5c:0f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 4c:75:03:84:ae:68:2f:88:58:4f:f1:3b:da:e9:fc:82:a3:c4:2d:4d
Fingerprint (sha256): 88:48:3d:b3:71:82:ef:c1:b3:1b:c7:76:8b:d8:7b:ba:2e:5f:a8:82:af:fc:d4:67:13:ad:c9:78:80:9b:58:36
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www.spraytexture.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.spraytexture.com
Public Key Algorithm
RSA
Key Size
4096
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.spraytexture.com
Other certificates including the domain name spraytexture.com
(limited to 100 certificates)
spraytexture.com
spraytexture.com
spraytexture.com
www.3d-habitat.com
southbucksrealestate.co.uk
www.aqua-scape.com
www.aucklandrealestate.mobi
www.spraytexture.com
spraytexture.com
carpignano.org
lookingfabulous.com
www.jactivism.com
www.spraytexture.com
www.spraytexture.com
patent.place
www.spraytexture.com
spraytexture.com
spraytexture.com
www.3d-habitat.com
southbucksrealestate.co.uk
www.aqua-scape.com
www.aucklandrealestate.mobi
www.spraytexture.com
spraytexture.com
carpignano.org
lookingfabulous.com
www.jactivism.com
www.spraytexture.com
www.spraytexture.com
patent.place
www.spraytexture.com
Certificate
The complete raw certificate details for www.spraytexture.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGXzCCBUegAwIBAgISAxmDtjJCa8zrKo4PIkv9yS7eMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMTIwMTA4NDRaFw0y MDAxMTAwMTA4NDRaMB8xHTAbBgNVBAMTFHd3dy5zcHJheXRleHR1cmUuY29tMIIC IjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAsPlztmC6gOUT3L++8AePZoIV h9AAXfTpG5+17ECBrGrNq8ar6OmkV+LJMkSzGjU+DA5iTQApFKRqcReuAPoZy6Sk kHcex+7fNbH3k0xL7j2hdVVqx4JVrQz70k3gGCE4sPvTBLKRrGPHjSRXSMNQimyi 19k0pRx5Gr7DXmSrIDC/Jt8V3JtR+UICOySqehP0XCXVq6n7+W9kZReSTtWSj0QK rqrnJWWz2TKCL2lWTetTqjqGUKD9uCFWuyltOWBRQvEp323yhhJl3RHgi6GmKjF2 TQb3V0LNUcRFGCb41bDGkGtJav7snPLVgJmPlSWou22aOgp9t4mHoF6cwAnwIE/k Tf9tuRMShB7He8iBFCaxP5uhLV7YBpXRpxW7w5n63NPVD+dwdcIrhLsUkmUbrIn7 XgnzvCFInkksW1hiPxsl5Up2EqmiAo4Kzqfc2vJXYip1op0Rp34iR9HxKDqvFrca jJ2me7vjWqVCC2vSUE1duFBq7MKXqWx0qzSZSYi18IfckChBOkmvhhCa+M+gMeeU GU0QV1NtaOo9a/pfGa7JExaYOX11GazzK46ekJkmFy1uJgYTcqY3kOQikjq8Qe7y jTbLL70RDGDxBqZp4gzlE1N6iI9mfXPGns2L4hh+KvLeGzrVa1/70r3bfydEPqxa FQ0N/wV+ZS86YqNFIskCAwEAAaOCAmgwggJkMA4GA1UdDwEB/wQEAwIFoDAdBgNV HSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4E FgQUZ9UyKoFBamQ+DSc7uyx4u5q2XA8wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3 pkVl7/Oo7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2Nz cC5pbnQteDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2Vy dC5pbnQteDMubGV0c2VuY3J5cHQub3JnLzAfBgNVHREEGDAWghR3d3cuc3ByYXl0 ZXh0dXJlLmNvbTBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAo MCYGCCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisG AQQB1nkCBAIEgfQEgfEA7wB2ACk8UZZUyDlluqpQ/FgH1Ldvv1h6KXLcpMMM9OVF R/R4AAABbb25q5sAAAQDAEcwRQIhAIs/xzVIuxUB8/fbivNoI/LpatxZRfyAur+Y 0f/3+OFCAiARuR7lJ+GJf3POOWys6cGz7vfm9K5tKX3e2hTBfFW0sAB1AF6nc/nf VsDntTZIfdBJ4DJ6kZoMhKESEoQYdZaBcUVYAAABbb25rXMAAAQDAEYwRAIgLnCY 1ZB9wogUyDImVmAGD8+KS3LpMBmYTPrOStCOilgCID8+NO/Bes9ndoLO1YZ7CmhI 4/HWrB0ieSU2MlEj+JCGMA0GCSqGSIb3DQEBCwUAA4IBAQBsfDgcEvzx4KSqgVMS mdzD8MlOpEK6Zbzm7PwjDjOaMWyDZjnYorza7wKi5jWqCsiDdfa7/T44JVA4t8wq 3+d2fga9MPsUF3jhRQcNPenzjIbfpMiV8CXZ9dwqPMMToAMmEJdedJ59w9YrhqUI nzU+AYJXgNwM0gyfzkZh2dGYkm+WeiXTYWFpkNbkW8HAbT0CKQ4iQ5YGV2AXjs7s daVKkjgf0LIA3vuL2usI1r3wh00KxPBWtnWAdzThoZGsSDG8DuI6Pqj6T1932NzG ZK6J2kC94NQVpdgMl8uUoKENkzXSJ1WwdYQZAy0NQu2k3MWV42Dm3gTGANt4B5Zj Sqpf -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAsPlztmC6gOUT3L++8AeP ZoIVh9AAXfTpG5+17ECBrGrNq8ar6OmkV+LJMkSzGjU+DA5iTQApFKRqcReuAPoZ y6SkkHcex+7fNbH3k0xL7j2hdVVqx4JVrQz70k3gGCE4sPvTBLKRrGPHjSRXSMNQ imyi19k0pRx5Gr7DXmSrIDC/Jt8V3JtR+UICOySqehP0XCXVq6n7+W9kZReSTtWS j0QKrqrnJWWz2TKCL2lWTetTqjqGUKD9uCFWuyltOWBRQvEp323yhhJl3RHgi6Gm KjF2TQb3V0LNUcRFGCb41bDGkGtJav7snPLVgJmPlSWou22aOgp9t4mHoF6cwAnw IE/kTf9tuRMShB7He8iBFCaxP5uhLV7YBpXRpxW7w5n63NPVD+dwdcIrhLsUkmUb rIn7XgnzvCFInkksW1hiPxsl5Up2EqmiAo4Kzqfc2vJXYip1op0Rp34iR9HxKDqv FrcajJ2me7vjWqVCC2vSUE1duFBq7MKXqWx0qzSZSYi18IfckChBOkmvhhCa+M+g MeeUGU0QV1NtaOo9a/pfGa7JExaYOX11GazzK46ekJkmFy1uJgYTcqY3kOQikjq8 Qe7yjTbLL70RDGDxBqZp4gzlE1N6iI9mfXPGns2L4hh+KvLeGzrVa1/70r3bfydE PqxaFQ0N/wV+ZS86YqNFIskCAwEAAQ== -----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 270018991853163180380419030917512730062558 . . . . . . . . [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 2019-10-12 01:08:44 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-10 01:08:44 +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.spraytexture.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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 721992650419373224078918879638315397048876679000477429719098082068393527687757482314639480382002852964527437152657429000780764570122935782019840700608809251539862120460141641670042916429135104661759163092374442112118075351310751584870828924546723100644100944534196439524712248413151704362023890313101411548368797374911744088911057811408052609686117985627754725829878131521048362542678521020103288544979470423725888760618778059609007287345459913943903286993049487128358143453934122432483814141505265904507799849174074383341395713266978067536086565890066273405152965657828592112638868999391550028076471017618937355293396585136213184486707312443327385941808261053359061890238015123800158437384050718976913278587140576507555496996052594831684793896603198773162982917086755932166033764798961548987663809137435768859042919414827361129393531654582433435842045218051565654164927701259274771216141708379529526760961072658527370288534077339010091675184392712981789593922216508137080154026861787517529809531298740842398746525760581989907120741269341826900451904268991782157603417932838032146018252064297305688991943107360944746655392913272150327306336254492922949248242061471901594428325583254828056586405145286276256176994188047610612751344329 . . . . . . . . . . . . . . . . . . . . [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) 67d5322a81416a643e0d273bbb2c78bb9ab65c0f . . . . . . . . . . . . . . . . [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 (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.spraytexture.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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016dbdb9ab9b00000403004730450221008b3fc73548bb1501f3f7db8af36823f2e96adc5945fc80babf98d1fff7f8e142022011b91ee527e1897f73ce396cace9c1b3eef7e6f4ae6d297ddeda14c17c55b4b00075005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016dbdb9ad73000004030046304402202e7098d5907dc28814c832265660060fcf8a4b72e93019984cface4ad08e8a5802203f3e34efc17acf677682ced5867b0a6848e3f1d6ac1d22792536325123f89086 . . . . [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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