bufalo.org
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:5d:46:74:71:de:ec:c6:8b:cd:a9:6b:10:df:a8:81:cb:71 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): 04:5d:46:74:71:de:ec:c6:8b:cd:a9:6b:10:df:a8:81:cb:71Serial Number (int): 380189054426403013620335906041439549770609
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 33:00:37:5c:16:4f:e0:2b:5a:ce:7a:6f:40:b4:bb:df:23:27:38:0f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 58:94:a9:b9:79:ab:ee:b2:da:dd:60:f1:5a:b5:52:60:fe:f0:58:e1
Fingerprint (sha256): 7d:e3:e1:e6:82:ef:9a:36:bd:a7:e0:4f:11:81:76:ee:59:0b:38:9c:3f:c3:73:ee:c2:b9:d9:82:9b:fe:26:8d
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----- MIIGSzCCBTOgAwIBAgISBF1GdHHe7MaLzalrEN+ogctxMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMDkwODA3MjRaFw0y MDAxMDcwODA3MjRaMBUxEzARBgNVBAMTCmJ1ZmFsby5vcmcwggIiMA0GCSqGSIb3 DQEBAQUAA4ICDwAwggIKAoICAQDlk9LM8Nic3ZxmeutWWHU+ZGyAr0UN339l5fXC jtVEqF3pMw3zCI3xtVYPm2uf9catOd1opREOE4sylta3e6/z4VJAuloY0MbCVsyP HoijliotaV8qA4szq5472NucBbjQPkOM6XWqUOmh0hwK5/vIbxaZMqinVUye5o+k gY/Ek9a38zB8Z+DowlGjNiVbJhZlBmSaSE0E1FyD2SlmEEecIHIPRJeppMoPp6t0 xUUpUg0svMwGTqsk3KKIAKDqkrE22OZxbunbF/hINd+MXk2k+qTAxO0aBlulfu7l cMdAqVhbhZqwrq1bZoul1ClAl9Z8MA2qz62kII6qNp12qA0PRFiH90LBbE+da0Yq 3wTZRg9imrpsO3KQH1Bnf9lz6kRH1/3LnqgNuxYgzWFq4CkPwu44i1oupW6f3xtI jCkjH9oYTacqhaiyOC7YoV770Od+4tjs6X7lKw/itdU2s58N9UA1D2/XNNywetAt c92IaViMuxuttgdRCJYjqWlAvqsuqo5j8Bki+bYkI43PVahd6/LZ4Lm5q1NzyIIX 9yUY7PuGTnf8KV4XpyrGONUtmsYlO8Qf2TIa8IW7SR1rjpB2Cf26XDMx4mPthQEp 1cfAYVC08Urq7FDfUNd5XbaqdLzpqppZGUz0Mpjaz71cUtxaqiljhA0c6fgOqSKj utLMFwIDAQABo4ICXjCCAlowDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsG AQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBQzADdcFk/g K1rOem9AtLvfIyc4DzAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBv BggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5s ZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5s ZXRzZW5jcnlwdC5vcmcvMBUGA1UdEQQOMAyCCmJ1ZmFsby5vcmcwTAYDVR0gBEUw QzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDov L2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEDBgorBgEEAdZ5AgQCBIH0BIHxAO8AdgBv U3asMfAxGdiZAKRRFf93FRwR2QLBACkGjbIImjfZEwAAAW2vxeQVAAAEAwBHMEUC IAU/9/OY440EtFEi1WPPOgrEAqrKW1797DTRUx56U8H9AiEAy4Ynau8U39hKUsZP DulRS9Z7Iunu20L5NU6oTuY7LZcAdQCyHgXMi6LNiiBOh2b5K7mKJSBna9r6cOey SVMt74uQXgAAAW2vxePrAAAEAwBGMEQCIBAC1tISsW7CnKgevwOjqWELn41+x8ld CpenBD1VXvQ0AiAvt0YHdCAYvfs27fq7uC9UUEiKpola1hYvk9/AQRv/XzANBgkq hkiG9w0BAQsFAAOCAQEAP0D/gbx7Y/VLIQxGsdIyimJO7wmsktTLlz+yHlsaiPZH YOL6d7BoL0GzzBO7ZBT4lg3OqdVgrV5dSqyVGeA2mrg9s5vxk2Gw5YzXBAxbYKja Ys+1O0sgCVv4+Dam/kkZjELvNQRAv6uvCeNDjOlo2ACPjPIi8uiuSu9clCX6y3AK iLfL4ifU7vbv+8ST2QjZOiHEUhauUCbbRa4sax+/urWLKFplJhRC58uZwcjZBCQi Bk1rEUzftaExGe26bxMZS+/tQ1FJuZQUM9L2IAIPii8rH1kMT0NaDtWEvOf6LRuz sA7ekxxuhKwbA3QrA73+DyC5ilRSXp/xEFf1w3Dvfw== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA5ZPSzPDYnN2cZnrrVlh1 PmRsgK9FDd9/ZeX1wo7VRKhd6TMN8wiN8bVWD5trn/XGrTndaKURDhOLMpbWt3uv 8+FSQLpaGNDGwlbMjx6Io5YqLWlfKgOLM6ueO9jbnAW40D5DjOl1qlDpodIcCuf7 yG8WmTKop1VMnuaPpIGPxJPWt/MwfGfg6MJRozYlWyYWZQZkmkhNBNRcg9kpZhBH nCByD0SXqaTKD6erdMVFKVINLLzMBk6rJNyiiACg6pKxNtjmcW7p2xf4SDXfjF5N pPqkwMTtGgZbpX7u5XDHQKlYW4WasK6tW2aLpdQpQJfWfDANqs+tpCCOqjaddqgN D0RYh/dCwWxPnWtGKt8E2UYPYpq6bDtykB9QZ3/Zc+pER9f9y56oDbsWIM1hauAp D8LuOItaLqVun98bSIwpIx/aGE2nKoWosjgu2KFe+9DnfuLY7Ol+5SsP4rXVNrOf DfVANQ9v1zTcsHrQLXPdiGlYjLsbrbYHUQiWI6lpQL6rLqqOY/AZIvm2JCONz1Wo Xevy2eC5uatTc8iCF/clGOz7hk53/CleF6cqxjjVLZrGJTvEH9kyGvCFu0kda46Q dgn9ulwzMeJj7YUBKdXHwGFQtPFK6uxQ31DXeV22qnS86aqaWRlM9DKY2s+9XFLc WqopY4QNHOn4Dqkio7rSzBcCAwEAAQ== -----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 380189054426403013620335906041439549770609 . . . . . . . . [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 2019-10-09 08:07:24 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-07 08:07:24 +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 936594222118313789205904189118529695251384030537164353013358561173272536579133066295459255495150183551129926891208213744787814950896207865669875537340577421525070837364847082421204893304048390438246502996798997722518670972000616578289498221852999076570631527597778418385979246312240381179366547786564348183311426500056275979194302044350891454297060178911246752876839548186664966650824960020766014717603682406761317439490513009621658389403644574332011982953012112203307388999106344085857143488766227370311807592405999680934083813001713740202345061448343114515159163172115282465778029501109410318152102285260100487149330542641161689336616406083173283587135291568760566480128314769920312574270232153278533996900121848828673813839140261419516954972669755698673784412067626165450512954658794947547111030183968692297048808694456309686436263440432585585507358117927507056405805549898230603867700048967363910003138003563320939607128193756687666599104624612844866907603481928349969402127272501051191739429955710016444835819002393853210095951532327660553798687371241253834103068934423320933323256373580329968109880310300583635166695554274080095189464807127453604597202060334034840649256784207265782810110301336965570319957226312909658898222103 . . . . . . . . . . . . . . . . . . . . [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) 3300375c164fe02b5ace7a6f40b4bbdf2327380f . . . . . . . . . . . . . . . . [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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef0076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016dafc5e41500000403004730450220053ff7f398e38d04b45122d563cf3a0ac402aaca5b5efdec34d1531e7a53c1fd022100cb86276aef14dfd84a52c64f0ee9514bd67b22e9eedb42f9354ea84ee63b2d97007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016dafc5e3eb000004030046304402201002d6d212b16ec29ca81ebf03a3a9610b9f8d7ec7c95d0a97a7043d555ef43402202fb74607742018bdfb36edfabbb82f5450488aa6895ad6162f93dfc0411bff5f . . . . [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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