www.guuco.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:c9:df:5c:4b:1e:1e:b7:19:bd:e0:06:e2:eb:28:f3:71:6d 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:c9:df:5c:4b:1e:1e:b7:19:bd:e0:06:e2:eb:28:f3:71:6dSerial Number (int): 330030510604327463594393949675625305567597
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: c1:1d:4f:39:46:bf:40:17:54:d4:98:d8:cd:c9:08:99:c8:17:5c:21
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): f9:73:09:e1:3b:0b:ec:eb:f3:a7:7e:d9:7a:ae:02:6d:e1:e0:ff:a3
Fingerprint (sha256): 97:78:24:c9:7e:2f:1d:7a:52:d6:b3:40:b5:32:4c:1d:19:b7:ea:73:67:b3:24:88:9e:ce:04:27:9c:4b:04:ad
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----- MIIGUjCCBTqgAwIBAgISA8nfXEseHrcZveAG4uso83FtMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMTMwNjMzMjBaFw0y MDAxMTEwNjMzMjBaMBgxFjAUBgNVBAMTDXd3dy5ndXVjby5jb20wggIiMA0GCSqG SIb3DQEBAQUAA4ICDwAwggIKAoICAQDuSqxfggs6zk9r2Wk27E0neSjuZiFxzRdF 9iu+QanyRcVgCwADV3Hi0V/acNqcJ8rBQGXPX6w0a/APP/KKVK89+ni3VefyvGwG 0uzNkquc5hoBqbrEvZzd5dZqqn84hx2ySGt9Qf041YbkVWNkLuc0HQaJTpuKE6PU 4CxYgLtkQ60LJxWTfe83b1d0xsQvPI2WFb24jzG/W91bwzJwaRMxQbU6drBIjZ9x PAmLqHgvlxM3MZoAdX8sWmU4MFKq1C4mzZ8rLI2VEwEx2CUOhXd0+K/2j3eB1K9O ek5cwQVqDUoS4mATJU4lfHQqcxXRP30WCJrAChwB7QggvfdhyXPI2hTPfz4LHFwp ptmlCBIofkPZivdvMt2VHtnaXORK4HQRzANrm6mUejkHByNM0D9mEsARL6h/X+gk XlDuoo+j4eeGrwHgG7015HHuYGVQ0ytIBe6J2zmVjKtPn/H1elQ0VflzDwWtn2Dh ljV1gPQg9cEf0hB89wgERIW41kii/xGW2lYg0r4vXQRuHzcF51/9JNAsbM15ztIe gGmJWQ0Fr6bLGcZXyn1jbng0X+JiiRGZt07yMjaKUC2jzaQmCbrA9+wXvgG61FTw FWEisuqJI/Lhpimp+aXEma9xVbjBDjg8M8n+J5t8g4SJLYXnAU7TDezxlCoHTsAR zCyyCmHoswIDAQABo4ICYjCCAl4wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQG CCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBTBHU85 Rr9AF1TUmNjNyQiZyBdcITAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86js oTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14 My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14 My5sZXRzZW5jcnlwdC5vcmcvMBgGA1UdEQQRMA+CDXd3dy5ndXVjby5jb20wTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEEBgorBgEEAdZ5AgQCBIH1BIHy APAAdgCyHgXMi6LNiiBOh2b5K7mKJSBna9r6cOeySVMt74uQXgAAAW3ECTKEAAAE AwBHMEUCIGHo7ZwfhYxGXJqH+Fd4SG57MeuQsuTmaQTSDBFN3gv0AiEA4VcN7FRE PiuWzXmNFSU3WZi0td/1sK1lS3MWoMocEZYAdgBvU3asMfAxGdiZAKRRFf93FRwR 2QLBACkGjbIImjfZEwAAAW3ECTM7AAAEAwBHMEUCIGWzMu+A6z5AsCNOzcWM9U5H FrhzOfY3AvmBQRww/Xb7AiEAmff9q7CMf4mpt0Nn8UT54rlUDPOxEA33GYoLagzF aHIwDQYJKoZIhvcNAQELBQADggEBAIM1FHBV9sb7cI0M/Q3b0KpVWbJhE7jULQqY IjTrm/rIiDhx2M1EYGb0NQrfAKC2qaNuxJjWFgxVcvkmh3WPFmRKN3R/X5rzFfvL l6jqehpw4G1WFi/o01KWXGiXPqoNT8JkyOb6LXhC9LlXf6F0mI04uxlOyfx+WgzA TiNhebp9LJHr+EIMu4p9sEWv7uNk5C3LQWGNrINYyxyFDWiunvw5wrFMObspvLAr P5yok9D35XtvrrHXmOS47QN/LPyibibqZTtJzYi27LGLLhipHMnhf1GNg0H3bMEh H+8t5l0veXNNwcgiV1VFReZIbAUAsY4SYXfuTw49i1tFA0ugb0I= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA7kqsX4ILOs5Pa9lpNuxN J3ko7mYhcc0XRfYrvkGp8kXFYAsAA1dx4tFf2nDanCfKwUBlz1+sNGvwDz/yilSv Pfp4t1Xn8rxsBtLszZKrnOYaAam6xL2c3eXWaqp/OIcdskhrfUH9ONWG5FVjZC7n NB0GiU6bihOj1OAsWIC7ZEOtCycVk33vN29XdMbELzyNlhW9uI8xv1vdW8MycGkT MUG1OnawSI2fcTwJi6h4L5cTNzGaAHV/LFplODBSqtQuJs2fKyyNlRMBMdglDoV3 dPiv9o93gdSvTnpOXMEFag1KEuJgEyVOJXx0KnMV0T99FgiawAocAe0IIL33Yclz yNoUz38+CxxcKabZpQgSKH5D2Yr3bzLdlR7Z2lzkSuB0EcwDa5uplHo5BwcjTNA/ ZhLAES+of1/oJF5Q7qKPo+Hnhq8B4Bu9NeRx7mBlUNMrSAXuids5lYyrT5/x9XpU NFX5cw8FrZ9g4ZY1dYD0IPXBH9IQfPcIBESFuNZIov8RltpWINK+L10Ebh83Bedf /STQLGzNec7SHoBpiVkNBa+myxnGV8p9Y254NF/iYokRmbdO8jI2ilAto82kJgm6 wPfsF74ButRU8BVhIrLqiSPy4aYpqfmlxJmvcVW4wQ44PDPJ/iebfIOEiS2F5wFO 0w3s8ZQqB07AEcwssgph6LMCAwEAAQ== -----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 330030510604327463594393949675625305567597 . . . . . . . . [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 2019-10-13 06:33:20 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-11 06:33:20 +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 972145290600136274713719904772180049261693865224750526783669994994725109498420168383409074057021034094846714886266308930706539791619014401491615372030581600275814968044433139336526870203761750591455529088242198349141987058636765195151702691529528364988557828407159799120540329607086361396218722296756401069452340126556090414923738394683378779107105595168941576166789934102317657944419224505318174981862891473214218499835733753290195590849586926521847773128446586676288156596355978699982368506771226173753161134097434077110278212404839752116066180655593487594417307541303077474690992710828423438213637739587663947075485906714498815819819656285497002242578311534976323869483965695098085490576858538529109018641295576645737981003273528799186059376140931250338805476917998111336650202454947952240994500565362566049237857028860588041870208425955728266656280186085062474278644959469550766656482280694104603475165519039157938787649805589620715281556587188712862249000642470309240239358310304886854801665391299002875103142592717693370609380722468045268787224789683645134887324138793294527823476657350692233916452380531144458972110693725059124479117399557807417591426356290479530369657034586827226456452878535917889088181605545119357163661491 . . . . . . . . . . . . . . . . . . . . [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) c11d4f3946bf401754d498d8cdc90899c8175c21 . . . . . . . . . . . . . . . . [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) 00f0007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016dc40932840000040300473045022061e8ed9c1f858c465c9a87f85778486e7b31eb90b2e4e66904d20c114dde0bf4022100e1570dec54443e2b96cd798d1525375998b4b5dff5b0ad654b7316a0ca1c11960076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016dc409333b0000040300473045022065b332ef80eb3e40b0234ecdc58cf54e4716b87339f63702f981411c30fd76fb02210099f7fdabb08c7f89a9b74367f144f9e2b9540cf3b1100df7198a0b6a0cc56872 . . . . [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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