bufalo.org
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:e0:f9:8d:1e:88:20:76:9b:5b:e4:a2:ac:5f:0c:7d:ae:93 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=bufalo.org
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:e0:f9:8d:1e:88:20:76:9b:5b:e4:a2:ac:5f:0c:7d:ae:93Serial Number (int): 337891818489635818337429275005301299195539
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: b1:c7:e5:39:65:1d:d5:b8:cf:42:91:dc:02:5d:94:d7:36:62:86:e0
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 3a:b3:dd:32:0f:66:54:c3:e0:17:21:9a:74:92:72:af:3f:5d:4a:6a
Fingerprint (sha256): ff:91:07:37:bf:4a:a2:7f:59:fa:3b:b3:3b:41:22:6a:d3:87:7a:7c:43:51:48:73:ad:a8:fc:0e:de:36:35:3e
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate bufalo.org
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for bufalo.org
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
bufalo.org
Other certificates including the domain name bufalo.org
(limited to 100 certificates)
Certificate
The complete raw certificate details for bufalo.org in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGTTCCBTWgAwIBAgISA+D5jR6IIHabW+SirF8Mfa6TMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEyMTAxNjI0MjdaFw0y MDAzMDkxNjI0MjdaMBUxEzARBgNVBAMTCmJ1ZmFsby5vcmcwggIiMA0GCSqGSIb3 DQEBAQUAA4ICDwAwggIKAoICAQDL2FVqhgrWWdpCjbkb0YgHHJ0PYbKAEJRUFRQM jClusub9gD7jRJamRSRTgwOJnsqordSVIL0pmmmqyxic8SVK2vgKkd3pcKd403He jGSZ3bxI+ZixaEEX1fnWSQGkI3OiQLWqR2JET7iQrSJ5aECV393AeNIlCvCMaEW7 hE7xU/Km9oYYxzVFHvUc4oDECCOqwhlWa45eyuyKggeF2swcTsFrlpRix3nmYbzc hQ/lRMDCcz/scteaVHH8LblPXcKjlNpJJp+/q9Nkz11n2UVhSbVcq9YMMAYk5mo1 XmJvN3YyuqelD3ipSKXvsc8D1V0ScqLZfKOG2l0CVZtjOdpO/CE0LBprQ/KeVMYu jL08igO0Gz84ulBpGOjyPSubcKV+iz1KN9gcSLt+wDVq0y/tdcPrpCpKbBH+ptsS te6Nizo0lwDjmp2V7iv4rQP7ZSLwUGs/+5K+rYDdybeiicvmJLyjBh0OOfrsrxTf FZ2fW2/lz9AQWcJ2fqXCTowN6xecYaTn6APRcwWhxNcLlWIXkK7dyE9jKPZQBDOD HveHJBK6z+dDVujcuTerIkOPbOfqjnFZbpeczuxfpMvGCu4NOQwiXZv1uoQkRHIm RJZPWfwdGQfLbubgBFlRSZuVXaeHyNFoshWT65lTQRCNR5X5cKOKJsn6QqYV0kJG BlR48wIDAQABo4ICYDCCAlwwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsG AQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBSxx+U5ZR3V uM9CkdwCXZTXNmKG4DAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBv BggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5s ZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5s ZXRzZW5jcnlwdC5vcmcvMBUGA1UdEQQOMAyCCmJ1ZmFsby5vcmcwTAYDVR0gBEUw QzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDov L2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEFBgorBgEEAdZ5AgQCBIH2BIHzAPEAdwBe p3P531bA57U2SH3QSeAyepGaDIShEhKEGHWWgXFFWAAAAW7w1zuaAAAEAwBIMEYC IQD+7xhPFU52dmmorHG3F5rcoXBMt8oayjVde9cg24i+dgIhALYvyLwNkbUn1P63 HKMeaZN374AsAlXeN2nPAtOsjQ9fAHYAB7dcG+V9aP/xsMYdIxXHuuZXfFeUt2ru vGE6GmnTohwAAAFu8Nc76QAABAMARzBFAiAEEhO4uSXbLtY6D4omkizYjn0bNJqY K0dU7PRSffhcXgIhALSU/YAIOzXEhXeJbxRv7e781Sc6IPOIFNyNyjYJLSGaMA0G CSqGSIb3DQEBCwUAA4IBAQCHBnSPkBY8mr2AsRTpORhaDy7EtkhlGaMPbgwJ5WLC aFeVuoum9AVvD0ppdBtk0BoC6ZBW+QeTOfXkzHYQhzbsj3qk9MpdZoCRcyS8HuN4 TZBDvSAOM8e8TVhFDIWSuH34Nk/Om/dP5sEOBJvSzatX20aolEI8YrH62BX6esJz vV0MJLFZHrkXsjD+rFkUao7uOCM65lqUGQ0tfYLXS21rHRB0qSpi2/nIoxTjeYTo FXdlzInZ5tkqUEyLbh3mg7le45XPUDT2ZBkpW+1mCycgyMpx6wL9HgrZgYuBafY5 aI405mBEPN6JEpA9eNqzDf/LkzJzyduOLmk1E0CHRkPx -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAy9hVaoYK1lnaQo25G9GI BxydD2GygBCUVBUUDIwpbrLm/YA+40SWpkUkU4MDiZ7KqK3UlSC9KZppqssYnPEl Str4CpHd6XCneNNx3oxkmd28SPmYsWhBF9X51kkBpCNzokC1qkdiRE+4kK0ieWhA ld/dwHjSJQrwjGhFu4RO8VPypvaGGMc1RR71HOKAxAgjqsIZVmuOXsrsioIHhdrM HE7Ba5aUYsd55mG83IUP5UTAwnM/7HLXmlRx/C25T13Co5TaSSafv6vTZM9dZ9lF YUm1XKvWDDAGJOZqNV5ibzd2MrqnpQ94qUil77HPA9VdEnKi2XyjhtpdAlWbYzna TvwhNCwaa0PynlTGLoy9PIoDtBs/OLpQaRjo8j0rm3Clfos9SjfYHEi7fsA1atMv 7XXD66QqSmwR/qbbErXujYs6NJcA45qdle4r+K0D+2Ui8FBrP/uSvq2A3cm3oonL 5iS8owYdDjn67K8U3xWdn1tv5c/QEFnCdn6lwk6MDesXnGGk5+gD0XMFocTXC5Vi F5Cu3chPYyj2UAQzgx73hyQSus/nQ1bo3Lk3qyJDj2zn6o5xWW6XnM7sX6TLxgru DTkMIl2b9bqEJERyJkSWT1n8HRkHy27m4ARZUUmblV2nh8jRaLIVk+uZU0EQjUeV +XCjiibJ+kKmFdJCRgZUePMCAwEAAQ== -----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 337891818489635818337429275005301299195539 . . . . . . . . [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 2019-12-10 16:24:27 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-09 16:24:27 +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 'bufalo.org' . . . . . . . . [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 831615262679772135722922718571854924822748147426909053690056057303779116272537967413464953267984433758525638762974311857240882405381597384343747572822341482839570072651869970517463697820655904677389744801045202299896040079153427558918840766155290020909463347372110572414897944025755128364656325320912099208055967347213536579247228731957658890649744463670505139463591982076988025645424499880278243561618017906160419575610255349684125834928291738208748942721786887578094882293994973321520055787439444183806189472314037790441617701536002154499799472664279391364000118450633183483768501057769333202501381107668048883624367344959876993367300755606118260678698092016268112724659853438335560101624750098815178355851625219898521052178742840126405536602168128010245533842569050212513609901022178715759618019089909354450072930798018853135909247424143878794833239787747540538129555239428512565123389183234248268729243206803084962407711752508174379622525111026716509190829964768729957945430715127291980917338853411696578964359938952007448414816400888621035757956531522388724739261272884550245063705337266119594066193436786240822701037525874529520694177940137721923835480752330880400307563291147755202828004494882068021645477058397274027851020531 . . . . . . . . . . . . . . . . . . . . [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) b1c7e539651dd5b8cf4291dc025d94d7366286e0 . . . . . . . . . . . . . . . . [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 (14 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'bufalo.org' . . . . . . . . . . . . . . . . [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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f10077005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016ef0d73b9a0000040300483046022100feef184f154e767669a8ac71b7179adca1704cb7ca1aca355d7bd720db88be76022100b62fc8bc0d91b527d4feb71ca31e699377ef802c0255de3769cf02d3ac8d0f5f00760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016ef0d73be900000403004730450220041213b8b925db2ed63a0f8a26922cd88e7d1b349a982b4754ecf4527df85c5e022100b494fd80083b35c48577896f146fedeefcd5273a20f38814dc8dca36092d219a . . . . [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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