bufalo.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:3a:d9:7c:1f:71:69:53:3a:bb:5a:28:68:0f:41:1c:41:7b 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): 03:3a:d9:7c:1f:71:69:53:3a:bb:5a:28:68:0f:41:1c:41:7b
Serial Number (int): 281362322034331032505334705894239376261499
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: e7:c5:91:53:d2:dc:7d:d2:81:45:93:98:b4:26:32:64:01:8e:81:3f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): d8:34:1a:02:aa:a5:27:68:e8:d3:a2:66:bf:82:2f:8f:f5:2f:4b:8a
Fingerprint (sha256): 33:8f:fc:5d:51:53:c1:e4:ac:03:d6:72:92:7a:08:ee:1c:f2:32:32:47:34:8a:ee:ff:f1:55:ce:c4:09:75:c7

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 281362322034331032505334705894239376261499
 . . . . . . . . [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 2019-08-03 05:22:15 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-01 05:22:15 +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 785180669827775544094886329215975077164614873132511368521152549863122391381083455004234345236324105308490914225745420759764469939341439874188954755825795238807230329193090050253535201770624050757744296956849524770818397498054205274108921103960208128504054116673705594523627245879383469664545447170594038346712619051723721981762535181240871896856223745536448394837376807588750542718693775239716055338929898762651945724392587167298465317994527031962736339030580532075202892990093091126725158905983200776384183338180206782976667056904045035495251301528771496606503346321970916748094135251605344896754207476336750669926196748849614603056065012085511025634438711323796538701421840628707493499629911107913011151179601871182269021111911907032933374817289891303182886145790251638864863003681124001375708422555731830683392308470783004221048775093585785639611955897691308081569636782997672995878223635612384804183198588353382605973404316118114416336045471881309921893870680168029800223714591330322894479406164652756350838009396080513660168598808901892071275289317766251392876111127324524109544053602825503401050726790532512020881437690050220431616252023463612697866838479924240567500345844341669141356388384790418654932709872473685429738815889
 . . . . . . . . . . . . . . . . . . . . [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)
							e7c59153d2dc7dd281459398b4263264018e813f
 . . . . . . . . . . . . . . . . [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)
							00f10077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016c56249b9e0000040300483046022100be7992c68d5c72217dc5db7d935e70e2e8b0b4c79cbe34ec12f3821aa3421abb022100fc1b40adfbc8f8d22478314e02b3bb80e631bb75d12691095b387a73b193679900760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016c56249b6b0000040300473045022018aebafc42efd44c3150da40cab2daf9e7317379b270da207b30105965eb5110022100d496b5b2561e04e3b08be3956a0fc4eaed27b44af41546481e2b78cef72e2f10
 . . . . [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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