headmirror.com
Issued by R3
About this certificate
This digital certificate with serial number 04:20:35:83:72:f0:2e:9e:5a:f1:cc:b3:90:e8:d3:bc:10:43 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=headmirror.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:20:35:83:72:f0:2e:9e:5a:f1:cc:b3:90:e8:d3:bc:10:43Serial Number (int): 359409311074399967590925374126735654391875
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 36:73:d9:1c:66:d7:d6:fd:33:cc:4c:4f:d7:14:2b:4c:70:fa:5d:7c
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): 69:ae:1e:89:d9:b1:e4:4b:a0:37:61:d3:d2:6c:37:3c:43:af:ac:b1
Fingerprint (sha256): 70:c5:71:18:e8:1e:b0:93:5b:7c:82:a7:64:f8:3a:fc:92:55:f3:64:86:7d:7f:08:ee:61:32:09:5f:a5:70:49
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate headmirror.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for headmirror.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
headmirror.com
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Certificate
The complete raw certificate details for headmirror.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIE6DCCA9CgAwIBAgISBCA1g3LwLp5a8cyzkOjTvBBDMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzA4MjAwNTA4MzRaFw0yMzExMTgwNTA4MzNaMBkxFzAVBgNVBAMT DmhlYWRtaXJyb3IuY29tMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA l5a2mVIj48ObNhkoITr7/JJAwHDTUesiNzOVehEED5PZeuLd5ASJhnFRXUFlTTRR I014+0OKkNPkFLgmcCxh308fGRN5iSd0j6+5DEx0wgBAYALBhErkODSa424a8k0F uEp6peYIYWu3KoH9WFeFlUUE/59MDfzl/yCRfZ28vZtdEZpZlwafydmPJwHszFPR vNCm6U5QVStLleUzntZ3O2GidCqMaO4ZSZZd6RwuyPIUPaDPM7hkudFCCV6PotUb Xp+hkLFvTGswD5oOlW14koUTJFSIFdRelDiHw1iGfxdZP/kXts8635p51s3V0Mlt gkVB2KHXtNgNmTAohjrUOwIDAQABo4ICDzCCAgswDgYDVR0PAQH/BAQDAgWgMB0G A1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1Ud DgQWBBQ2c9kcZtfW/TPMTE/XFCtMcPpdfDAfBgNVHSMEGDAWgBQULrMXt1hWy65Q CUDmH6+dixTCxjBVBggrBgEFBQcBAQRJMEcwIQYIKwYBBQUHMAGGFWh0dHA6Ly9y My5vLmxlbmNyLm9yZzAiBggrBgEFBQcwAoYWaHR0cDovL3IzLmkubGVuY3Iub3Jn LzAZBgNVHREEEjAQgg5oZWFkbWlycm9yLmNvbTATBgNVHSAEDDAKMAgGBmeBDAEC ATCCAQMGCisGAQQB1nkCBAIEgfQEgfEA7wB1AHoyjFTYty22IOo44FIe6YQWcDIT hU070ivBOlejUutSAAABihGPPdIAAAQDAEYwRAIgWNyFoopuMV6A2sjR+ALUKmBm oEKROM5GHY1aYvzJQKwCIER6wpra+QdrxeOYXtSDtVYjo0OHOh0KZhFPQToHWJaY AHYArfe++nz/EMiLnT2cHj4YarRnKV3PsQwkyoWGNOvcgooAAAGKEY8+JwAABAMA RzBFAiEA+rK3Epqd6fDUM4y/x9z1zkECboYnPWej6Jp+fAjRW78CIGD0GcKB8vM4 IAKlyQ+/80046BeNTDn5uQrKbFN50PdDMA0GCSqGSIb3DQEBCwUAA4IBAQCHV6U8 /Xl51BgYHYddBiLRADjOWfviFshoJkqZaKmz/pWBTD5vgdULeQVseeKYvdMC6e5f egoB14TegJQsFrZCYCvVAtIlfY9i77jO/aVd0j7jqyMe8H3TBXfri/mnylprjWhb k+6BnKHVk/Fv/yVknBDnRFF6AIWpmPQ/2Fdgms5bASUP5w458Y/yiiGABrtGKvz3 EIoKZwtfDa4XNkeJtCS0szTaw4tApaYF+SxaQlORTwu1SeA+fItSE+mUQbz32Fg1 B8XJU4qlp28QrOk6reKnJHZAgdAzEgwNpp32h9yrrL0rTGhpb6XR3EhqfuzDd5Ak BTpZkdkeImyTtfW9 -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAl5a2mVIj48ObNhkoITr7 /JJAwHDTUesiNzOVehEED5PZeuLd5ASJhnFRXUFlTTRRI014+0OKkNPkFLgmcCxh 308fGRN5iSd0j6+5DEx0wgBAYALBhErkODSa424a8k0FuEp6peYIYWu3KoH9WFeF lUUE/59MDfzl/yCRfZ28vZtdEZpZlwafydmPJwHszFPRvNCm6U5QVStLleUzntZ3 O2GidCqMaO4ZSZZd6RwuyPIUPaDPM7hkudFCCV6PotUbXp+hkLFvTGswD5oOlW14 koUTJFSIFdRelDiHw1iGfxdZP/kXts8635p51s3V0MltgkVB2KHXtNgNmTAohjrU OwIDAQAB -----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 359409311074399967590925374126735654391875 . . . . . . . . [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 'R3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-08-20 05:08:34 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-11-18 05:08:33 +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 'headmirror.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 19136303536684154558629189062353939304494920192734471767359893759265683410460466344187450311193167339204288043199842443682913657285761013164231118535202573789754726317790123209401498969653297218054078001722899340358117245875985198135154856963657577236450452526469107791998187231160496471446888884889363037751336270064533049996475608711675220679813135595387504158151416701430233656131447505446009596705315162694847469828100592994568726109745501836586419075534441840897270707765838712117113218689596315865396929273470938357861981090024437005384149054644340550560915375386277627417791374308532659174948657051358727951419 . . . . . . . . . . . . . . . . . . . . [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) 3673d91c66d7d6fd33cc4c4fd7142b4c70fa5d7c . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (18 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'headmirror.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 (12 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 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef0075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018a118f3dd20000040300463044022058dc85a28a6e315e80dac8d1f802d42a6066a0429138ce461d8d5a62fcc940ac0220447ac29adaf9076bc5e3985ed483b55623a343873a1d0a66114f413a07589698007600adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a0000018a118f3e270000040300473045022100fab2b7129a9de9f0d4338cbfc7dcf5ce41026e86273d67a3e89a7e7c08d15bbf022060f419c281f2f3382002a5c90fbff34d38e8178d4c39f9b90aca6c5379d0f743 . . . . [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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