www.bufalo.org
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:39:1c:d7:2a:30:99:78:02:98:79:0a:c1:da:e6:95:42:cb 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): 03:39:1c:d7:2a:30:99:78:02:98:79:0a:c1:da:e6:95:42:cbSerial Number (int): 280771288293192446433578717408615340524235
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 60:dd:a0:ea:1e:7b:d9:71:00:91:24:75:c3:10:e8:f4:dc:77:f0:68
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): b7:65:21:26:fb:d2:2d:68:89:24:eb:71:12:94:65:7e:cf:06:5f:b5
Fingerprint (sha256): 4a:6e:69:58:9e:a4:46:f2:e7:be:91:3d:6a:e6:0f:74:88:3e:f2:7f:f4:a7:a8:8e:e8:63:64:69:cd:fd:ac:b2
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----- MIIGVDCCBTygAwIBAgISAzkc1yowmXgCmHkKwdrmlULLMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAyMTMyMzAwNTBaFw0y MDA1MTMyMzAwNTBaMBkxFzAVBgNVBAMTDnd3dy5idWZhbG8ub3JnMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyUnSNP3nomBOSuDZHwrKYA93GK7cXsIW 5ONIk0+B4IyQG8WV4fcatnQzo6sMz5WKt8DNiCXVNN7CKBVszlKCc/8HFQJFniVB gcEEBeHU4QZV0eEAKrBn5QWBKnV+K3yjC9oLkJFNPsRU42GDzBABk8Xr1OB6bfBb DY0gFWqCIU3voYv7hkhtkjXi404qawGJPfKiaQo2pp+0h3Rj+ek4LnxkZksCqt+4 TxQJCR9yWefUm0ENmTWSXnLIhGaUoDJcRb2yrbSiyJ1d95w/xL1SLjLzM5mh9y5Z CLAxizhCv0CYmJuHH4dBKaPMbbXtb/xQMaxqyE4/yLxDJgnc6QSMfXYbz5mhY9UY EOTeVFVN8jX2PoMV2JacJKTMWs6JvSz1hyThlInTTP/gX1rTE/CJde4fxighqN4W S3qK6pTouT+oCB4vaoj7n/OIV//MxbBCAW+H/YHo3mfQCM7nrty6KkRSPgDrOK/U sABHzYXnrEEJHX5cnOOVfM7XDbLSv6pf9tIb40Jyrktz0ePxju1QHRASgjamFTi+ hJl+VFMiqTv0C5CQJP1y/jqEP4BYrFEwpiUwa16sa3n/diD/FVOqcLxvqIKcfYQ+ rrkmFOjHmaxU19ovgCxqrcMyS5pQJ1wsEz0QK+jJoAToffS/vcD4r2NXzuOi0mpc +esdpdmaMe8CAwEAAaOCAmMwggJfMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUYN2g 6h572XEAkSR1wxDo9Nx38GgwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAZBgNVHREEEjAQgg53d3cuYnVmYWxvLm9yZzBM BgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIB FhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQQGCisGAQQB1nkCBAIEgfUE gfIA8AB2AAe3XBvlfWj/8bDGHSMVx7rmV3xXlLdq7rxhOhpp06IcAAABcED/e5IA AAQDAEcwRQIgFDrIX+RSPxXKJC4HGJRqNDayjuI3Ook3ZxOuUA0ZJYICIQCXzS0+ lY+G6cI2uftOM3++JNY6CrPkAHzQzey6tDpQIAB2APCVpFnyANGCQBAtL5OIjq1L /h1H45nh0DSmsKiqjrJzAAABcED/fVoAAAQDAEcwRQIhAIVNwLkE0Hbd47tX/jrD 8i2gdm93U/E5kk1cQBfYhrbPAiAe0lFL8xnuxcvG3mVRje7oLDluNN3uh2VloNo4 BRGu1jANBgkqhkiG9w0BAQsFAAOCAQEAhs+h1h1/bbl+n5swNKvfKGng2D9XINLM StBEJywZDwYkHi/v9qit3sqBTuoaskvkigDj5x8ARbo++64E3eMK/FQtWwmkyl37 JAvJy27hrCyJRJJ9kA8RPIBE/VBSvtROPNLGqcLJ9bvFEIMN+jDbuhJUM4qc06IV HWhZshpPl5LKIrcxrCAZZyJi0vlBAKxa2G3at42bjYrizJcIORcXQs4ESAYnnMXt 6ysyfWRu8PbcEvGoZAUyL2HhvU1E6CkMi5WNakVx6hFL0ss6OqKrzIhvGZ6jT5uC omanSbhiTqqpKS5k2GK6kvAU9Or57UXTNq91ieTM8lG7U/kGFRyqOg== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyUnSNP3nomBOSuDZHwrK YA93GK7cXsIW5ONIk0+B4IyQG8WV4fcatnQzo6sMz5WKt8DNiCXVNN7CKBVszlKC c/8HFQJFniVBgcEEBeHU4QZV0eEAKrBn5QWBKnV+K3yjC9oLkJFNPsRU42GDzBAB k8Xr1OB6bfBbDY0gFWqCIU3voYv7hkhtkjXi404qawGJPfKiaQo2pp+0h3Rj+ek4 LnxkZksCqt+4TxQJCR9yWefUm0ENmTWSXnLIhGaUoDJcRb2yrbSiyJ1d95w/xL1S LjLzM5mh9y5ZCLAxizhCv0CYmJuHH4dBKaPMbbXtb/xQMaxqyE4/yLxDJgnc6QSM fXYbz5mhY9UYEOTeVFVN8jX2PoMV2JacJKTMWs6JvSz1hyThlInTTP/gX1rTE/CJ de4fxighqN4WS3qK6pTouT+oCB4vaoj7n/OIV//MxbBCAW+H/YHo3mfQCM7nrty6 KkRSPgDrOK/UsABHzYXnrEEJHX5cnOOVfM7XDbLSv6pf9tIb40Jyrktz0ePxju1Q HRASgjamFTi+hJl+VFMiqTv0C5CQJP1y/jqEP4BYrFEwpiUwa16sa3n/diD/FVOq cLxvqIKcfYQ+rrkmFOjHmaxU19ovgCxqrcMyS5pQJ1wsEz0QK+jJoAToffS/vcD4 r2NXzuOi0mpc+esdpdmaMe8CAwEAAQ== -----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 280771288293192446433578717408615340524235 . . . . . . . . [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 2020-02-13 23:00:50 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-13 23:00:50 +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 821184879151550368300984630850100568560769771005312078620071539010381087454952297117767520801893862159365746311632130918537912539494910399780470115861953927807496857929883985071465371378146244521364494214695616892451961823364807718965330505933874250383011192321484223605639280431291954606360380598199524456881080695730425036977529895551717972761694718702039243053786030952992031328382869831127919027103179209222031033103553425850281619105170501910731961371310752379760429946983766585715972174052860160496655907512646120042242818015239627371333737380770171002083675424405203593237142188466985507513452570149250547685764866356081179839008124821804144631347983469574778595947213972453266039244977014727374948339758406802340590170921188509710385342311886335322567844991972171539896253407611579491811410819110857964601979359954741482266996148711773667385358491086125366956383053716492152736340113749553017978914405633633181245181245594813083453070067115676392042977787428319120586039421098197068036467548936383169896145070450047954151723284212461432900672460504552120559846230924622094106203290282894153333034124247679705309664570914795481271121207645184465066633793691130865383568597378887792833578187614171600033520691312257207316918767 . . . . . . . . . . . . . . . . . . . . [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) 60dda0ea1e7bd97100912475c310e8f4dc77f068 . . . . . . . . . . . . . . . . [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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f000760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000017040ff7b9200000403004730450220143ac85fe4523f15ca242e0718946a3436b28ee2373a89376713ae500d19258202210097cd2d3e958f86e9c236b9fb4e337fbe24d63a0ab3e4007cd0cdecbab43a5020007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000017040ff7d5a0000040300473045022100854dc0b904d076dde3bb57fe3ac3f22da0766f7753f139924d5c4017d886b6cf02201ed2514bf319eec5cbc6de65518deee82c396e34ddee876565a0da380511aed6 . . . . [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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