www.bufalo.org
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:4c:c0:a2:63:c6:21:c9:8a:0b:be:b2:91:5e:6e:85:dc:80 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): 03:4c:c0:a2:63:c6:21:c9:8a:0b:be:b2:91:5e:6e:85:dc:80Serial Number (int): 287454372632210033243418309336492816063616
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 87:70:b3:f7:94:cd:90:c9:ac:a5:25:75:83:43:5c:c9:ac:32:e7:07
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 83:97:f1:b7:e7:49:2b:44:22:3e:ff:28:e7:38:f5:3f:60:5e:59:ce
Fingerprint (sha256): 26:dc:32:4e:d5:46:c4:4c:74:8f:d2:25:3c:de:e1:af:48:1d:0b:e9:4f:c3:99:42:f6:13:e4:e7:11:49:d8:4a
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----- MIIGVTCCBT2gAwIBAgISA0zAomPGIcmKC76ykV5uhdyAMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMDgyMjE4MDFaFw0y MDAxMDYyMjE4MDFaMBkxFzAVBgNVBAMTDnd3dy5idWZhbG8ub3JnMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxyMghoBPUNHQRriZKvTDTsr5UIwtAPpF igoqDJ3ajXYXbEwogZXA/iCPsscazfwtSPFELZjcQC33DzMqQdDFpYqLCvVoIr1q 5dDw7iO/vgpRZW0BUgeZyOE+lNxS0LhHPGhM813FXSe82vwk0751ntoE/m9UOhkp u5oSBV/sjeGeRIvi7nq9Z9swAXV9nHXKJfI38CbzUtqK/0hZGQng7hwJcB0lTsiB 9RZvmKcESJk444KiMsYHTcEvCqwT8+5XaAuK0HS6ueU8Spsnh40kDl8OAsM7Ar8e DEvNxlhM2FTR1NC0shq/SGwYqygxsn1q6gI+HAmF7yIiV2hwbqVr4pl6IJ2TFgW/ qJnsIldbWJsbWSLlE8xWfL/MkS6+xQ0Tqi8SbpHmeoOTa+/yzmVZ1Rg135stHEce YHfuSwK7Jit+y2KxRwCk+y9TTh6nC2boHm6sa5XodbsepSn2H+3V4imMCnl6UIQi oUY8mYbV+5bX5xRcqFLA9NACqn0GloaziVZcnjJd4Y7VM9dYjiGpyonV87aQpBu1 5mNoo2eSJrIrfDVZbu03/r7+Rw0bPo0rDviMABVAaNYVnwB3S7H9AP2bATkWJ4rD fqOTSXqp+4jaDkM4P34TxjRY2+7DXcHcECcDLee4FGcR9nxKKTui8CCD4NUmRbML 03r/E7WqWBMCAwEAAaOCAmQwggJgMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUh3Cz 95TNkMmspSV1g0Ncyawy5wcwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAZBgNVHREEEjAQgg53d3cuYnVmYWxvLm9yZzBM BgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIB FhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQUGCisGAQQB1nkCBAIEgfYE gfMA8QB3APCVpFnyANGCQBAtL5OIjq1L/h1H45nh0DSmsKiqjrJzAAABba2qS28A AAQDAEgwRgIhAIkMrr9rRSUY+KGunzolRjnFCcaN6cHWDCHD+765c4AzAiEAt46J JzNOJ+ElTrwhf6xXYhNTEyfcAqlw9wErWkqg1kAAdgApPFGWVMg5ZbqqUPxYB9S3 b79Yeily3KTDDPTlRUf0eAAAAW2tqktgAAAEAwBHMEUCIQD7foYwl2eD5nbA4zuY mEF2EgmGQjXCjfxAOVVnDRB6qwIgeSUSJQzyJY6TGsXaD+3k3ON+8mFLG6/4tj8g JJdE6MYwDQYJKoZIhvcNAQELBQADggEBAFZ5bi8DeccUeWxIfieGZuqYr3suSN1Z 5MgfEQJeKJBcxxy3+nTyxck87JCLd32+NfkZPhfQJWVVZGWboK0ScaYp+PI8Q2l5 FLR/fLi5/n+a19kVPslODGaFCOKn8bMQJ/dKlJ1lq599lPb71F2ijNWlCs1j5jYZ KSUQuRw5zRbh3JL5WlAs9xzCIWSrkflWlP9Tg6Z4I3h9psq5nD7wjAdiKH2UFINA WlGlmW+xBSdjWdnpq067QvsQmypH593pTv8SgFWLoDXaV6ADaZM6lE9Zspegdcrm Q4Vssg9fHcxlIgmUhT+4W/4Ycp63IQCqVDPMxKwqHqfp6+OjLZ7Y2sA= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxyMghoBPUNHQRriZKvTD Tsr5UIwtAPpFigoqDJ3ajXYXbEwogZXA/iCPsscazfwtSPFELZjcQC33DzMqQdDF pYqLCvVoIr1q5dDw7iO/vgpRZW0BUgeZyOE+lNxS0LhHPGhM813FXSe82vwk0751 ntoE/m9UOhkpu5oSBV/sjeGeRIvi7nq9Z9swAXV9nHXKJfI38CbzUtqK/0hZGQng 7hwJcB0lTsiB9RZvmKcESJk444KiMsYHTcEvCqwT8+5XaAuK0HS6ueU8Spsnh40k Dl8OAsM7Ar8eDEvNxlhM2FTR1NC0shq/SGwYqygxsn1q6gI+HAmF7yIiV2hwbqVr 4pl6IJ2TFgW/qJnsIldbWJsbWSLlE8xWfL/MkS6+xQ0Tqi8SbpHmeoOTa+/yzmVZ 1Rg135stHEceYHfuSwK7Jit+y2KxRwCk+y9TTh6nC2boHm6sa5XodbsepSn2H+3V 4imMCnl6UIQioUY8mYbV+5bX5xRcqFLA9NACqn0GloaziVZcnjJd4Y7VM9dYjiGp yonV87aQpBu15mNoo2eSJrIrfDVZbu03/r7+Rw0bPo0rDviMABVAaNYVnwB3S7H9 AP2bATkWJ4rDfqOTSXqp+4jaDkM4P34TxjRY2+7DXcHcECcDLee4FGcR9nxKKTui 8CCD4NUmRbML03r/E7WqWBMCAwEAAQ== -----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 287454372632210033243418309336492816063616 . . . . . . . . [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 2019-10-08 22:18:01 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-06 22:18:01 +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 812408958093220700351413101656539237014532189799788454924170848077120143056465543032207209734335148971935516723809240090848549165887859278405228213331405982761746633471147252061336967022106528263520511124114302376679831135558858392149255193505204879950244189706635408854050991146998411971491560366850380843869159367642392353497582556515469538753792495056590366842087610619325902411288556614407087223390609245019881253092480043182857822985078301679017032914000825814362689141385977259695518080177824123418266935762604339708012854618157055140287849237925786683472956790051801590344455780946490376975183819070463062434395641723266687555933285021097203133628592191531670464488234955591042963519339517426133179973505654482618545222193331804656925040068907220936617352732420400762123842536612644482466686800861781814313982153081849951909991980047300349956145954567943260974411108186086190511586565526106508615678407143316648717028438571719534495593140558704403895219242344551878852182686638438410630226141299445864238835715776381956932292129943752369654982524688393392125780494705336110813120534343039942589128321063734193772508263634540597687992835593746170227132069155762864829855483276330327487541876927467584637952117849194752048257043 . . . . . . . . . . . . . . . . . . . . [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) 8770b3f794cd90c9aca5257583435cc9ac32e707 . . . . . . . . . . . . . . . . [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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f1007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016dadaa4b6f0000040300483046022100890caebf6b452518f8a1ae9f3a254639c509c68de9c1d60c21c3fbbeb9738033022100b78e8927334e27e1254ebc217fac576213531327dc02a970f7012b5a4aa0d640007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016dadaa4b600000040300473045022100fb7e8630976783e676c0e33b989841761209864235c28dfc403955670d107aab0220792512250cf2258e931ac5da0fede4dce37ef2614b1baff8b63f20249744e8c6 . . . . [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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