structuresettlements.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:f8:78:5b:09:de:1e:2c:1c:40:09:af:88:1d:d5:3c:04:82 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=structuresettlements.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:f8:78:5b:09:de:1e:2c:1c:40:09:af:88:1d:d5:3c:04:82Serial Number (int): 345886864850321471840321225497310008181890
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 15:ad:03:cb:53:0b:e6:b5:9c:95:95:a2:6e:91:da:74:dd:be:ef:96
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): d8:d4:85:42:1f:bc:43:25:37:1a:25:52:85:bd:06:47:52:3c:73:4a
Fingerprint (sha256): ad:e4:73:0d:a9:01:16:92:1e:21:67:d3:60:b9:ba:cf:70:c9:5e:e1:9f:ec:cd:a8:b8:08:a0:43:34:77:c1:10
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate structuresettlements.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for structuresettlements.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
structuresettlements.com
Other certificates including the domain name structuresettlements.com
(limited to 100 certificates)
www.structuresettlements.com
embracerings.com
structuresettlements.com
structuresettlements.com
igamingcompanies.com
www.dailydarns.com
structuresettlements.com
www.structuresettlements.com
structuresettlements.com
bidmanagementtools.com
sellitwhereitsits.com
www.structuresettlements.com
structuresettlements.com
calling.org
www.dyna-systems.com
structuresettlements.com
www.permitmasters.com
embracerings.com
structuresettlements.com
structuresettlements.com
igamingcompanies.com
www.dailydarns.com
structuresettlements.com
www.structuresettlements.com
structuresettlements.com
bidmanagementtools.com
sellitwhereitsits.com
www.structuresettlements.com
structuresettlements.com
calling.org
www.dyna-systems.com
structuresettlements.com
www.permitmasters.com
Certificate
The complete raw certificate details for structuresettlements.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGaDCCBVCgAwIBAgISA/h4WwneHiwcQAmviB3VPASCMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMTcwNzE4NDlaFw0y MDAxMTUwNzE4NDlaMCMxITAfBgNVBAMTGHN0cnVjdHVyZXNldHRsZW1lbnRzLmNv bTCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAMZ14sqgaem/CWeJKxgx efexxzF8mKEUHhFZreEeXmThzX1fhOAeiki7EfUFd8g+LNY8O1pwjjr/xqRd+FYy R8nI4b7AhNt+tDcQiZ0PCaITqSN6Mpf5IBontN7sx8K9obZCW2l/pvCK1qJTI8rD LPfZn8BjpIyAZAJ9mIZVzWe5M66iWNs5k5GSKUWDdgtjpvcnRLNYVkAvg+8xS60B 4nyLLhOUngFgGJo8kD878POEWfeWh5judHz4A5vGxmq5BmZ3iTOUsNV56iuwSZht r5pmoTWw3I65QdZY7HP/QfoIlqtCNH+BQB8koNUHcTxt8HoDhWkGVTBlVXesHTDl Cv7fzXIuI1a/uSEWfw9hyVuivPgXBCrnVAhUi7OfxIsnZCv7BoB2lOdHOgO+z5R3 +dtBK0viYX9U20K0qElHAxQYp8ze30fwNDqIH1I6C1lereUlQQM4PTFIwDOEcJtF uHC6RU8zOuQ2JYUqOcDBPIncAtPcuqBdFPFETZzuIW1KEXPtHlVO29RQovOv8pCB MmIKrPIWwi8OMSa7F7C1/nO2Lm3sWrdhfuLgA3LOCnwBNSVLiP/d+lx4X7ig5TOE WlF35j1gUUuFmnQEz4hpAR63CIjQY7i2kwKKXW2iCcTzquKpNbX7lq02AOwHp5gv QWHXEmYfPVxHEmjI9fovkZgrAgMBAAGjggJtMIICaTAOBgNVHQ8BAf8EBAMCBaAw HQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYD VR0OBBYEFBWtA8tTC+a1nJWVom6R2nTdvu+WMB8GA1UdIwQYMBaAFKhKamMEfd26 5tE5t6ZFZe/zqOyhMG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDov L29jc3AuaW50LXgzLmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDov L2NlcnQuaW50LXgzLmxldHNlbmNyeXB0Lm9yZy8wIwYDVR0RBBwwGoIYc3RydWN0 dXJlc2V0dGxlbWVudHMuY29tMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHUAKTxRllTIOWW6qlD8WAfUt2+/WHop ctykwwz05UVH9HgAAAFt2MxGuAAABAMARjBEAiBTjr1v8Dot2oP8+OSgm74ae8az BwHHCGgjGtWP4U9TjAIgSrcu6oIJRdB2yfhb7GYDVegMSKV/ExnxDR109OKAlXsA dwBvU3asMfAxGdiZAKRRFf93FRwR2QLBACkGjbIImjfZEwAAAW3YzEh9AAAEAwBI MEYCIQDu49Zcwp1HRVW1NWzuIW+0c8m2Fo5id9W2dUv7a+x3rwIhALW2XScsAVnp P66lFUeizoJqbLBrHracDDybB5L9t5uEMA0GCSqGSIb3DQEBCwUAA4IBAQAz9u/+ wVR2CtGegBYtJwP1Tey+7pfqWwWZ3iIbAZg9H6mrIc+NiHNqg1KZT2FtCTG9qcCn k2GjSHy8r7F1Vd+qNjTL1FMrC3CmpsDJ63f6izBcVvnnZHFwlaGXTMkCtbF8Nk1X W0me4T9ib8rb/4hHKHMHOg3CJ3LNutl7KLyt4+zKoZ9Rnp5crVq0mUgrPHrLNwot 3DpIlU9V2SeEixU9PknmRrXiE/cOGQkGYR/grnKF1uXzKGRypJfuDgpCLF1ZpeWm dorTjn9yDRtFi6M0HbFVzwZSsk7/o9w4zmWdb34Covgnu0GDjE1+Z80lGBchtCUD xpNiO5/sDeWdGcTd -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxnXiyqBp6b8JZ4krGDF5 97HHMXyYoRQeEVmt4R5eZOHNfV+E4B6KSLsR9QV3yD4s1jw7WnCOOv/GpF34VjJH ycjhvsCE2360NxCJnQ8JohOpI3oyl/kgGie03uzHwr2htkJbaX+m8IrWolMjysMs 99mfwGOkjIBkAn2YhlXNZ7kzrqJY2zmTkZIpRYN2C2Om9ydEs1hWQC+D7zFLrQHi fIsuE5SeAWAYmjyQPzvw84RZ95aHmO50fPgDm8bGarkGZneJM5Sw1XnqK7BJmG2v mmahNbDcjrlB1ljsc/9B+giWq0I0f4FAHySg1QdxPG3wegOFaQZVMGVVd6wdMOUK /t/Nci4jVr+5IRZ/D2HJW6K8+BcEKudUCFSLs5/EiydkK/sGgHaU50c6A77PlHf5 20ErS+Jhf1TbQrSoSUcDFBinzN7fR/A0OogfUjoLWV6t5SVBAzg9MUjAM4Rwm0W4 cLpFTzM65DYlhSo5wME8idwC09y6oF0U8URNnO4hbUoRc+0eVU7b1FCi86/ykIEy Ygqs8hbCLw4xJrsXsLX+c7Yubexat2F+4uADcs4KfAE1JUuI/936XHhfuKDlM4Ra UXfmPWBRS4WadATPiGkBHrcIiNBjuLaTAopdbaIJxPOq4qk1tfuWrTYA7AenmC9B YdcSZh89XEcSaMj1+i+RmCsCAwEAAQ== -----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 345886864850321471840321225497310008181890 . . . . . . . . [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 2019-10-17 07:18:49 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-15 07:18:49 +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 'structuresettlements.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 809648168164589783151372082659816187718552990207322184038918002384540965519514046911893013474076764231773111163084610028696901625065638631745853353807311573306208398562361344701003013409047840716093393096171463652851953676516690210403773115031760571669619007314617882893941932928656778563429914114811036905389616474144388497778045523740735245432914827770762054103464655733219156545182978317322293892887145152257881860729008998421573093400055675231738194801646944506440676015260040152750500074620837023563248747104530636061764481490367345258978972377699293022163184349851544985326321396156320943936227371898615266485060600470626799507685712286232662774890293231561874962301830246711074910821999053719485659571815179927846645078225463348134458977800994360502534854254667108515774970694033684808320536489657781435895608567825415204786578313899558265118295221741098041363160125153713203241721412237838540153033282006221747626019135979020708154528860626425118057071322938758607229702717682084492642045058394829532713097669218635322829001308640830588325488991504291436159846179337450359410035230258739499629618263698370394379497508098459457023773260507963566284454882459070359765707739152852084846335662980903074572153242463655142876092459 . . . . . . . . . . . . . . . . . . . . [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) 15ad03cb530be6b59c9595a26e91da74ddbeef96 . . . . . . . . . . . . . . . . [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 (28 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'structuresettlements.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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016dd8cc46b800000403004630440220538ebd6ff03a2dda83fcf8e4a09bbe1a7bc6b30701c70868231ad58fe14f538c02204ab72eea820945d076c9f85bec660355e80c48a57f1319f10d1d74f4e280957b0077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016dd8cc487d0000040300483046022100eee3d65cc29d474555b5356cee216fb473c9b6168e6277d5b6754bfb6bec77af022100b5b65d272c0159e93faea51547a2ce826a6cb06b1eb69c0c3c9b0792fdb79b84 . . . . [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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