www.bufalo.org
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:7f:83:a6:2d:f0:09:63:33:15:1e:92:cd:30:18:ea:0f:24 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.bufalo.org
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:7f:83:a6:2d:f0:09:63:33:15:1e:92:cd:30:18:ea:0f:24Serial Number (int): 304727710114692362018180427793377604013860
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: f6:35:ed:f8:fa:8e:bc:c2:1f:03:69:2b:a2:15:75:be:e7:86:74:ef
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): e5:58:9d:b7:ee:b8:03:46:92:27:42:80:fa:d9:a2:58:cf:57:7e:45
Fingerprint (sha256): 54:85:cf:8d:2d:63:43:37:7c:f3:cb:1e:5d:5f:3b:18:ba:ac:2c:46:77:a9:ec:2f:ae:85:5c:cf:a2:21:17:58
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.bufalo.org
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.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
www.bufalo.org
Other certificates including the domain name bufalo.org
(limited to 100 certificates)
Certificate
The complete raw certificate details for www.bufalo.org in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGUzCCBTugAwIBAgISA3+Dpi3wCWMzFR6SzTAY6g8kMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA4MDMwNTIxNTdaFw0x OTExMDEwNTIxNTdaMBkxFzAVBgNVBAMTDnd3dy5idWZhbG8ub3JnMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA18q9Rq1KpfmpxYkzcun6GUPPbDQ0HVOH WXx2KPUlMOPD8OUKeSOHKYX7Notu0YmTgI+qbZChVg3Sz/cDyeFuFcM5T45Cjr1X 7h0g6kXUnIhvcumo6k9SbaEgcLsyitHRZj6BT5xWoirkFfzsHKv9x+FKsChn3tRR Z1WlBq+Rr3Oth1DiOeH0Dw0PrD1be5Mz+q9Z7N6qWf907Nf9CariDNBNdj8WWiQ1 V0G/DrgHpLvaBq0hJNWyu9NH/4guuDs8Ke4CFB3jsf6U/UJBpNh3Tp+ZsRBUzZfg sIc7TpfKKSG1yIXmcwMSooirwpbKC7TX16EWkxQjoi8uac8as7zV3NGxy1F90cdk rVf17ygyqxaoFXOS3eghgbZa9sKq/Vi5L3ORXaKLnM1L/dS3dfNMNnTDYe/Emj5M yfSvGG9VyS8BZtuDkj/7fkYPCy+BuesNMY7EftGZetUi+MO8aJt+ISmQB+1j9ZwC P96Ej/aDe0478YuVndPUQBOwtI0smR88PuJtOcj3ONjLLHBsdlVtBkb6tmcxaOpp hBusY1oW/+udmCbUwKQ+AfFc8RAoFjczN2JsMn4PLrjWeU4sDqRTd6+Lw4UkFeBA /BEhz0dxF6Sf0Uj6F7md6TZN2/Qrm/oxyWfxdlfITM6Vkaf9qz1wczmwx4pPdsxt HT4Xqj+sZv8CAwEAAaOCAmIwggJeMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU9jXt +PqOvMIfA2krohV1vueGdO8wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAZBgNVHREEEjAQgg53d3cuYnVmYWxvLm9yZzBM BgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIB FhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB1nkCBAIEgfQE gfEA7wB1ACk8UZZUyDlluqpQ/FgH1Ldvv1h6KXLcpMMM9OVFR/R4AAABbFYkVEcA AAQDAEYwRAIgDb3N+5tvm4xWBVXmNnqIDcWFvgRa1g8Y+uUb8nztaLECIGDFakDe PE/tEoQkBRPH3FfR+yh+foymE9imDDbzyyQnAHYAb1N2rDHwMRnYmQCkURX/dxUc EdkCwQApBo2yCJo32RMAAAFsViRWCQAABAMARzBFAiEAhWfAp+C7tHC0cNKsgAm+ ZKIAZn30ea1s6fFRR5Xkc7oCIB9cHmrepn63BLMqZafk+axKgegQI6eHgjqZKZqo MswLMA0GCSqGSIb3DQEBCwUAA4IBAQA+urERnjo1I7TSAWByJiLWXJDm4NEMXQ7e +NzZIM3vicZTKmz/H/+43WNUxVrUT5kqukf2CFFHKLsq8R9l9vzMcpwy1WZY0bdO hn9koKlWUypk3rZeM5w0Rf1xG3vfmVgpRQqasCktQwubLv0LNyNvvmlF9LV9756k Ag85Gd/cXtuDPcnFyzP3czvU/d89cPqETy3f66bVHtzOMZqInN3Y76FB7+Y4FEWz 6huygLY0OOlWYYXq/B0IP6QEVIR3NrR5bTJRvbyaieZyaliJqMts1h5iQNzUU8ms XOkJCKXpMfFCpOn0Zx6XflXiAeECQdzft3OjfmT6sy8DKPtr+wV1 -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA18q9Rq1KpfmpxYkzcun6 GUPPbDQ0HVOHWXx2KPUlMOPD8OUKeSOHKYX7Notu0YmTgI+qbZChVg3Sz/cDyeFu FcM5T45Cjr1X7h0g6kXUnIhvcumo6k9SbaEgcLsyitHRZj6BT5xWoirkFfzsHKv9 x+FKsChn3tRRZ1WlBq+Rr3Oth1DiOeH0Dw0PrD1be5Mz+q9Z7N6qWf907Nf9Cari DNBNdj8WWiQ1V0G/DrgHpLvaBq0hJNWyu9NH/4guuDs8Ke4CFB3jsf6U/UJBpNh3 Tp+ZsRBUzZfgsIc7TpfKKSG1yIXmcwMSooirwpbKC7TX16EWkxQjoi8uac8as7zV 3NGxy1F90cdkrVf17ygyqxaoFXOS3eghgbZa9sKq/Vi5L3ORXaKLnM1L/dS3dfNM NnTDYe/Emj5MyfSvGG9VyS8BZtuDkj/7fkYPCy+BuesNMY7EftGZetUi+MO8aJt+ ISmQB+1j9ZwCP96Ej/aDe0478YuVndPUQBOwtI0smR88PuJtOcj3ONjLLHBsdlVt Bkb6tmcxaOpphBusY1oW/+udmCbUwKQ+AfFc8RAoFjczN2JsMn4PLrjWeU4sDqRT d6+Lw4UkFeBA/BEhz0dxF6Sf0Uj6F7md6TZN2/Qrm/oxyWfxdlfITM6Vkaf9qz1w czmwx4pPdsxtHT4Xqj+sZv8CAwEAAQ== -----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 304727710114692362018180427793377604013860 . . . . . . . . [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 2019-08-03 05:21:57 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-01 05:21:57 +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.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 880354351288900412593769532332101184054041564070200142116463283624951341534021574230329431175641056600302573289783012052307571314854284799150079253670878008450848555830034130667719429855132263058781004711395282241831576478478818459468276232442720915263156629467695693707300050747116564575643260941027914718406405788172626606564242641633157876120173085572694637304892113713478640580609577264305142407711749935128979932522048505105999925406866917350849789363436590471183020072056740241999743334256646308102020138089837843887932392871378652999972266064802924744341988239203710062796131273966438368015228419841808846606137512815650371185708939392080850298398020816444333795140006282464397339033214899700606254534186495446430607634848811373677086329077259761002057371800611082051851848627266088131886948996041601900817634067919277136404159978168597728968164525288012075459463177213160446154545765256479887563093266555360749606323692161365872009599198423918366591932975850697240083809807541549560758655074456870163238813596657584436369446805109463406606336830126404395750959292494666589956423902169864532485953033010259423859428305381743773148969135864700552135642840309776460433754749763195824045129556634889208805975525388771287313966847 . . . . . . . . . . . . . . . . . . . . [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) f635edf8fa8ebcc21f03692ba21575bee78674ef . . . . . . . . . . . . . . . . [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 (18 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016c56245447000004030046304402200dbdcdfb9b6f9b8c560555e6367a880dc585be045ad60f18fae51bf27ced68b1022060c56a40de3c4fed1284240513c7dc57d1fb287e7e8ca613d8a60c36f3cb24270076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016c5624560900000403004730450221008567c0a7e0bbb470b470d2ac8009be64a200667df479ad6ce9f1514795e473ba02201f5c1e6adea67eb704b32a65a7e4f9ac4a81e81023a787823a99299aa832cc0b . . . . [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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