www.guuco.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:09:7d:36:da:3f:2d:28:f5:a7:96:ec:5a:ed:7d:68:dd:f1 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.guuco.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:09:7d:36:da:3f:2d:28:f5:a7:96:ec:5a:ed:7d:68:dd:f1Serial Number (int): 264565837407643305652855807036523197029873
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 71:71:7b:fd:6a:0e:b7:8f:e2:0e:41:8c:37:44:bf:ca:16:20:47:3d
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 97:ac:98:79:a8:dd:a9:68:4d:a9:d7:aa:ae:d2:dd:91:ed:74:3b:32
Fingerprint (sha256): ce:46:24:53:b4:a6:d0:24:55:cd:87:3e:a0:ec:14:eb:e5:9e:59:2e:a9:c0:19:51:16:a8:e4:c3:47:ea:31:ae
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.guuco.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.guuco.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.guuco.com
Other certificates including the domain name guuco.com
(limited to 100 certificates)
Certificate
The complete raw certificate details for www.guuco.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGUjCCBTqgAwIBAgISAwl9Nto/LSj1p5bsWu19aN3xMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEyMTYyMzQ4MjhaFw0y MDAzMTUyMzQ4MjhaMBgxFjAUBgNVBAMTDXd3dy5ndXVjby5jb20wggIiMA0GCSqG SIb3DQEBAQUAA4ICDwAwggIKAoICAQDIXbKKo0uZ61x3OmPe7N3J+JMc9O14cuhm 3QIFGXqV1eCIayYNgWLnR/geUb0aOCAR8kFYWlOsC7uqkFIKRltK49Eqm5XYEm70 28ImgSSHJikbx2/7M7U3cAYNUDWlBHb+9ldcro6Zj3nZPak43kGK1Xut+Pfi6zMM Bn0zaQcDFU9k0KlS8ZOr3Ho4v0a/RV8ibE02DFrED4yfyD+W7DqVW/aH4AabOrwB PGourrX/gtD908+3kFRD8zYx8236w+jLEYjdGpLg+6g+QFTWQbT6K5UfNi10w3fy y5MVBpb17MKAnjaa55tSN9QnT0C6PdUrq02nvmjAHlRcM8LDMKtsHuqdVl8LTBbs z8twgubre3cl73wQs+f12bIUyGjpsGTGJX4AxwpVFRSahrgSH3IIq5FW1gXA7BxD J2fOR/CN35kd7jDPXWcO8GKP96jUakSDA261d306VcRP/it8p2hTmytsvscFe8dc tOX8Dx1MnZjYw/+0DuQLgJO0r0IVOKrlnYpgvstDhZPaS7AO5KZh8iTyeZjdS3UI 2exQIhjvAnV4bA40L+OXsqXPgoMbqSMp6DBG7insqJQ1l8JPCjsqYX/dtCmXLsUr py7DaGYpYlj1zhSpWk6bsWxsvZ6sgdaN/cAqf+ZRWq3BghkJnHHzT/gl5znyo/qC F6nzS31tCQIDAQABo4ICYjCCAl4wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQG CCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBRxcXv9 ag63j+IOQYw3RL/KFiBHPTAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86js oTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14 My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14 My5sZXRzZW5jcnlwdC5vcmcvMBgGA1UdEQQRMA+CDXd3dy5ndXVjby5jb20wTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEEBgorBgEEAdZ5AgQCBIH1BIHy APAAdgBvU3asMfAxGdiZAKRRFf93FRwR2QLBACkGjbIImjfZEwAAAW8RU+eYAAAE AwBHMEUCIBD7zsHcj5+/2mW2c7KPsu+KtUmeyst6qh83PT8R+gEsAiEA+54Zn/C+ kHKJRz+5IPUNX7B8A8w5g0qLS0tQtaDiPBIAdgAHt1wb5X1o//Gwxh0jFce65ld8 V5S3au68YToaadOiHAAAAW8RU+fGAAAEAwBHMEUCIEFsVuDKIMdcOm7zWZcKwnSS V6lYz/dPEqoAWZlr+b34AiEAyOqVBJbfSp6DFyCj0hcYXBObK+F3W5aDtBrb2Qri 2eMwDQYJKoZIhvcNAQELBQADggEBAJYEIHeVBqDJ2rgi55VMvy9wp/TrwBoSGMTw n5r9ltFAtH/qMV3sid1Ms5AlyP2W8j1QXSeZqqpkzro+YroNIm6SVQLp9uaDiiHO 90ABXrnyMsQKFGdWKMP5nLG22eQeEy8cgkoOM146OQ0b5LFbpOgS5IU3Ia3+YDJq lalJDkzHLfAyBYv5q3aE8OskpEKNHzuLISavbg6mL7mcGmuq/MRdlKqZ6PwxGYnW TrmgVjWafxJXtUzOzH3+dzj20N9YG7h1Wq1Gc9+jtU4aALo67CoCCqbvZat3/m+Z YEtH06Jo7e5ShPYNhnclOIIQM+E1TJF7q59wUl2BxffH11f3zEY= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyF2yiqNLmetcdzpj3uzd yfiTHPTteHLoZt0CBRl6ldXgiGsmDYFi50f4HlG9GjggEfJBWFpTrAu7qpBSCkZb SuPRKpuV2BJu9NvCJoEkhyYpG8dv+zO1N3AGDVA1pQR2/vZXXK6OmY952T2pON5B itV7rfj34uszDAZ9M2kHAxVPZNCpUvGTq9x6OL9Gv0VfImxNNgxaxA+Mn8g/luw6 lVv2h+AGmzq8ATxqLq61/4LQ/dPPt5BUQ/M2MfNt+sPoyxGI3RqS4PuoPkBU1kG0 +iuVHzYtdMN38suTFQaW9ezCgJ42muebUjfUJ09Auj3VK6tNp75owB5UXDPCwzCr bB7qnVZfC0wW7M/LcILm63t3Je98ELPn9dmyFMho6bBkxiV+AMcKVRUUmoa4Eh9y CKuRVtYFwOwcQydnzkfwjd+ZHe4wz11nDvBij/eo1GpEgwNutXd9OlXET/4rfKdo U5srbL7HBXvHXLTl/A8dTJ2Y2MP/tA7kC4CTtK9CFTiq5Z2KYL7LQ4WT2kuwDuSm YfIk8nmY3Ut1CNnsUCIY7wJ1eGwONC/jl7Klz4KDG6kjKegwRu4p7KiUNZfCTwo7 KmF/3bQply7FK6cuw2hmKWJY9c4UqVpOm7FsbL2erIHWjf3AKn/mUVqtwYIZCZxx 80/4Jec58qP6ghep80t9bQkCAwEAAQ== -----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 264565837407643305652855807036523197029873 . . . . . . . . [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 2019-12-16 23:48:28 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-15 23:48:28 +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.guuco.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 817421986088825576304693480431289299976397468328179095260264151128804622850024924493481639002137481413495818205049377483923716424547903736763989578041809947904185682678852800428271883491069114849772281818998240818649143684318702247064517266724239629890067974277293265315531042545614867773267479547577648360495168017137422713572664614297983879544261856597560639685596610424750387641805524452404210046310494110907801693320882054124001159062988537486708135352894425725632853041628109688997749436513199111689698600381628628778667121582132846131043213856174439551375038654068877753965927667473579008802997226674786109102283736898679469024662439362436680247246867079683099777221446899735868666945467014751900920633521040828125087107320142956719166031309763093881053573483408908808977128359417356424784250640366784646216389939746082217010005465321941350485219365762407845236673048088219584788983457546655717203192535309277492116631013785972617476528465694695038240762853758294472391784404505176430323807515138257021578726317355244672034182798997189397127096645590687297541650896214074598112553022906728268597009751360228812981334306697404834897660275259619433647234092161165344363424985630582310937403237165546602846876356779230653482626313 . . . . . . . . . . . . . . . . . . . . [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) 71717bfd6a0eb78fe20e418c3744bfca1620473d . . . . . . . . . . . . . . . . [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 (17 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.guuco.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) 00f00076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016f1153e7980000040300473045022010fbcec1dc8f9fbfda65b673b28fb2ef8ab5499ecacb7aaa1f373d3f11fa012c022100fb9e199ff0be907289473fb920f50d5fb07c03cc39834a8b4b4b50b5a0e23c1200760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016f1153e7c600000403004730450220416c56e0ca20c75c3a6ef359970ac2749257a958cff74f12aa0059996bf9bdf8022100c8ea950496df4a9e831720a3d217185c139b2be1775b9683b41adbd90ae2d9e3 . . . . [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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