www.cosima.net

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:10:45:02:ca:cd:d1:78:9b:70:c1:a7:d4:da:2f:f7:20:79 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): 03:10:45:02:ca:cd:d1:78:9b:70:c1:a7:d4:da:2f:f7:20:79
Serial Number (int): 266873106895671973045430736230598474932345
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 22:b1:74:72:f9:97:07:2d:d6:2e:6c:85:e0:bd:aa:23:fe:19:38:1e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 2f:86:1b:1b:9d:03:12:04:45:1a:0c:0e:8d:c6:b0:8d:c5:89:63:7c
Fingerprint (sha256): 7d:57:6e:7d:4c:c2:84:e8:56:55:c5:af:6b:16:5e:27:b1:b0:aa:9d:a5:13:99:f0:83:1e:79:79:e1:ec:86:ff

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 266873106895671973045430736230598474932345
 . . . . . . . . [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 2019-07-28 10:50:33 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-26 10:50:33 +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 755609856551276469686161762228254476303385767549040840804549350848944644155498103486310646494671560091033789173948357356670895730929911139958388840119464535214273064098639464615488698746925378268740584209935921890938550601611251176421970044295030655752748731990170671763804097941350306580297302681754645207496949410453636507993286957707488177035012367383407429941448209460874006292753023618664411264913440978378725752300415942745591944672297739575858774643211392854842048669293555278124988433095949897531433646214526284902181099167985584678925967594105942720503344260530534099598881607884353984316611498973499700998516507899048598680259519770052257677454514559004422295627169769479245477776827553670582289687022366691787830339069958312585532375699064689998414310650124862061612017700072877564625961535288250300310330020683414849225012732212353888236760164232645890883853066920618671392721277995794262350648211374296802733807825670366530335264722140958703909410219256600714585830227414742911626796136439508006120107760356594599585784706555691133875409874905955244312310497454332630949674916310775607333472834344277270689794859678669771369724980127463565146860810191946459536045740840157108847298242309432626123629161480727843540601269
 . . . . . . . . . . . . . . . . . . . . [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)
							22b17472f997072dd62e6c85e0bdaa23fe19381e
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016c386b06ba0000040300463044022054a9c7b107ca92cf9de4e157ab51b9d7fcbcac9ed1278fcd0c395094b9e8234d02204c5755ea9bc1924f20751bf48ccfae02f073d603c5b1592e5d987ec65e791d20007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016c386b06e3000004030046304402204c12cdf3358a8659818423910de55a6537a90ccab73a17511b54d07d736d71ab02200399800062e4eed912c08e5577466c2a68a56b5fb8e9a638a43728827c4b830f
 . . . . [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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