www.cosima.net

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:6b:42:db:c1:8c:5a:ca:e6:7b:fd:9c:cc:19:d1:55:e5:7a 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.cosima.net

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:6b:42:db:c1:8c:5a:ca:e6:7b:fd:9c:cc:19:d1:55:e5:7a
Serial Number (int): 297835941142180074304415478530549854102906
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 29:c9:73:7c:dc:98:ac:cc:d2:8b:72:42:4e:dd:76:88:28:a8:12:2f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 90:60:e5:da:fa:46:75:98:23:5b:f5:50:e3:8d:ba:5c:2d:6b:45:9d
Fingerprint (sha256): 67:70:92:31:80:b1:fa:d4:1f:bf:7c:67:20:0f:19:58:e5:4e:74:85:ba:82:96:ac:48:16:c6:c8:84:8b:73:e0

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.cosima.net

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.cosima.net

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.cosima.net

Other certificates including the domain name cosima.net

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.cosima.net 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 297835941142180074304415478530549854102906
 . . . . . . . . [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 2019-05-28 10:12:56 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-26 10:12:56 +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.cosima.net'
 . . . . . . . . [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 718023404350373457459614581265468102312234216509257368775421750008075846200539115874323319555283355397205884903391350873244579463219755620980038752992143492611722724757234088507615589093317906721331744039367900901604297170618054249768386855891495247129721337802209139231801241658991145604609177603241734737480147402018678069422885195336999280066165230064586269271092521423660015181550470318183444024148567783338613066059044069628751160346255583490323294970232763231807574780929015161050956373404624069863215375248158028793553565167303158115137731547069586686155152237699525437350865750402335045410923872796503736520484627790187024808610765588606971478923503582865875284111707526951863688063348085091592755700180569018165041974753224621494422010924294817799280550755189898604664714429362202232330732435263772823693335488171005863729558808726772015980637664320430300184230953899569836517539488091785502153514981795068785975590070960823729260038734078749384257183014677141198393183686985226246956412712995176767220680234055596618442126284781220045267473389709605532207411187388808647613153479863161115609638423820769680127076274883566442470040594841023566952180044682384754745895766597264483195758622102616562403736561744000525343438953
 . . . . . . . . . . . . . . . . . . . . [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)
							29c9737cdc98acccd28b72424edd768828a8122f
 . . . . . . . . . . . . . . . . [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.cosima.net'
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016afe24aa310000040300463044022059c5ee4656cb7ef2d3f288f625cb2c695342b56007cb8ac3df90dbccd90a47c802207eb01573a9e98a176efb328fac8a4ede0bb41a1d11cb238f89603727cc9487e0007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016afe24ac130000040300473045022100c060b8cc73c025a73bb22e8cb1deea71dbb346602bbef1c27cc91130e6d2ea42022043f95aed78c2d003d52b236337eb2ab4fa0bc5da256d105bf7a136338076d8e7
 . . . . [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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