www.bitbutterfly.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:f7:2c:c7:ce:34:04:8d:1f:ba:35:a0:34:c6:3f:95:38:d2 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.bitbutterfly.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:f7:2c:c7:ce:34:04:8d:1f:ba:35:a0:34:c6:3f:95:38:d2
Serial Number (int): 345446125905939576495825095066828504643794
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 87:e2:ca:df:7f:fa:6b:b2:e6:ee:03:5f:df:ad:db:34:57:63:62:22
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): ff:c1:20:e4:24:6e:bf:54:a7:23:a5:d4:84:df:27:f9:fb:d6:f2:3b
Fingerprint (sha256): ab:22:54:69:15:ac:2d:14:a4:00:b8:d1:d3:92:68:1f:26:a3:a0:2d:cc:d0:fd:36:db:1e:54:81:10:ba:91:ac

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.bitbutterfly.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.bitbutterfly.com

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.bitbutterfly.com

Other certificates including the domain name bitbutterfly.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.bitbutterfly.com 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 345446125905939576495825095066828504643794
 . . . . . . . . [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 2019-12-23 08:25:20 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-22 08:25:20 +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.bitbutterfly.com'
 . . . . . . . . [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 808855154662938064758474892183563546017839749787291652779073951105322808248138787905749890885246983029627782775108085162338930411260801927607530274116350388794439425015918381854021110443170337996125419215694472052026937321658134662916431327714922635901834949551643991330592395436317669258995943743910857397404473979957242090571219025546561034533409765414735799888702917808326496291388989680406163443052345344147751583586933125850563290588862703036909968187174735392544324484933303101655254851476480417871939661144032538879326342166402601475698430111115548434862507435800202777809616130923796922765876266325778311889145154756755186039327604907484591634949235303571280336954699791654975297498773818566601996363881316208326689405429171947194438959966920415280460780327401867305377301459829077717560138883469628284452762168419456805446723226011030207220952388991767376926823380348105197061091259618215703981350583268657937714198937510693796453641858601408169218925687928809725711827985971841956597204471775690508224863126493734308880713925863544745181075788723408792027229400709168895288941726952577322728491720331445456673791040190393313530334592394242559702625144807965826529458074130491217001377072452029740229963329488619161418429189
 . . . . . . . . . . . . . . . . . . . . [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)
							87e2cadf7ffa6bb2e6ee035fdfaddb3457636222
 . . . . . . . . . . . . . . . . [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 (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.bitbutterfly.com'
 . . . . . . . . . . . . . . . . [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)
							00f00077005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016f321343680000040300483046022100d5a0995de0f30883ac6e9e2421fc7ed2f9960444fff328fa4ce528a567ba128b022100a4b537c19a6518a1523c6adc3cdd088ef5016b99fad6f880d8e6d246088dab8e007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016f3213438d00000403004630440220706971fb2e7c4edf39df5873973ff26363009411a4652c7719cd3c95b5d0904902200e96f7401a8b6c920ceb1e8cdc94605e2474cfdbeb1da1cad291b36a32584c0e
 . . . . [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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