bufalo.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:c7:db:c5:a7:45:92:a3:d8:18:58:b6:e4:6e:0b:e8:1b:4a 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:c7:db:c5:a7:45:92:a3:d8:18:58:b6:e4:6e:0b:e8:1b:4a
Serial Number (int): 329345176018780052016427988003727696468810
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: d8:12:f3:b8:5d:98:c9:2b:36:59:c1:e1:70:4b:55:bb:f9:19:3f:bc
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 3e:e0:1a:d6:e8:10:45:0d:7d:9b:0a:e0:40:c0:5f:39:72:0a:a3:30
Fingerprint (sha256): d1:ad:41:4d:f0:a2:af:e2:11:c4:21:6f:81:0f:b5:0a:eb:e3:bc:22:bd:71:ba:61:8b:bb:0f:8a:73:c9:e2:c6

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 329345176018780052016427988003727696468810
 . . . . . . . . [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 2019-05-25 17:13:30 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-23 17:13:30 +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 914210053651242913227224032396242010359813802500929828915992840720310398874268012618721594487164596406902138030809408054586641789773315680206902380827178664136776460566755306775379899762963804708270703536678658147905390965560050005345885535900413206563115084304646209145516977912281001525099502464967870382273754310047437251553840119337740237508610436975297318203161773511362294312512682485843646866499967122845558620314373298719203348133318152084442607254995511364391570501588556616631320029630148912601180421756580763821643709152400722522603494911471343357702412967724368881919713003422349881585973323892720198644832895721332783883572471009168351851171806399507401437718014299377683535700995174761555987407644298452705285946045453046251370785207304072510179721557639969289917593366584557777141813643194109576047331005231084729920890457228678066342378790838604831148187228048858355953744764942438852266975019986797454360280672981372075421442635645410240299420986883996358837497352750229511695847268396657680916577555763784944113307137144722564092970651934155478685395166526253935912372348055305915713470235699727656115035029463990018331350500475776378386059018966936035335217856269983075098184130191704087978607745040154124023805687
 . . . . . . . . . . . . . . . . . . . . [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)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:3|t:24|false]  
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007500e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016af0329d48000004030046304402204dfcd39f01779c85e5d8b2b8e8fbc05195f45fbe4776e86b972903eb12f260bb02207611e8c6c78701b432447e422c7c6109d78644df5b934dfdf2c62d3099320a20007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016af0329f2f00000403004830460221008a4446031484fecab73523f2301e9840390141e2e0b6ef4207b76790166d9ca7022100c71fb92770679dc86e1d04efb5f19488272e98541162aad04ffd6e489bb50c56
 . . . . [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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