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:93
Serial 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.org

Check 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-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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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