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:cb
Serial 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.org

Check 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-----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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 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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