blog.backlightmag.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:0b:ce:8c:9b:f6:2a:39:95:4c:de:ab:44:d2:52:2e:3e:29 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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=blog.backlightmag.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:0b:ce:8c:9b:f6:2a:39:95:4c:de:ab:44:d2:52:2e:3e:29
Serial Number (int): 265354514883379635112407758490783051562537
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 54:57:9f:8e:4a:a2:29:f9:0a:12:27:b4:a0:f3:41:ec:a4:39:fc:ae
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 57:7b:b3:89:0f:2f:72:af:de:69:4a:47:5e:88:e2:f7:f9:9c:a7:1c
Fingerprint (sha256): 85:12:63:e7:36:3a:0e:66:a7:72:6a:00:72:4c:ed:b1:59:f8:60:f4:bb:22:b9:9e:39:41:17:ea:5e:5b:11:09

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 blog.backlightmag.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for blog.backlightmag.com

Public Key Algorithm

RSA

Key Size

2048

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

blog.backlightmag.com
www.blog.backlightmag.com

Other certificates including the domain name backlightmag.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for blog.backlightmag.com in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2dgXTFRO+zFkFRFOOWCe
AtFuX8r/egb/5TDyL2RNHcl6GuwcNrN84k33d3fXFYf+2r7sHF/r+Mk10pv/vJ6T
W7C9i+QvuTQf+ZTSAOafvV5ob97ggnupHqgVsmG3RrF1AnMrP5H04LTHm9Riqjk8
f9iPdGTmXOMS9ov7Z84ASrTG0wEe1/Bv2PjWmGHmis/lA2WIwVjpmsU8tmQi+VW+
IkTjEzq+Oz7pbHWRSMp8pqwo6apYzMxS9xxlO2Eu93RYE8HCitfVgbARSLlwQpQZ
dVEf25NQBgFSaefevWz4dHdz0I4+YWNarMgf6BIIy8p9I2/ouYUi7Cg9ZkRTLOqH
zwIDAQAB
-----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 265354514883379635112407758490783051562537
 . . . . . . . . [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 2019-11-10 12:56:46 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-08 12:56:46 +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 'blog.backlightmag.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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 27500270625385772930831585622189018079589381401713895761953149978885117299228580078619191242964313367479608841719856781837145574016670071008392634843388945157973368309923789076054962738236643372712278665153169839616749057670022308336693936796181143199586181875807462274073042885398875828869850804455231540757253919594899684480282552505289134488540667731709582113681703884286170784280608413096845220633189756197426824698256503431217327293426149983842893883479276040402010746255753085824209092195182798666684761904665869089189577797182349399948353553231763319819763556045180221137987062438367543164899817641845377894351
 . . . . . . . . . . . . . . . . . . . . [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)
							54579f8e4aa229f90a1227b4a0f341eca439fcae
 . . . . . . . . . . . . . . . . [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 (52 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'blog.backlightmag.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.blog.backlightmag.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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee0075005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016e559a4efb000004030046304402203ac2782484fcab938e267719331ce59b5f6e6000c53a1db406a21c9d9dfb43ba0220300242cdf3fafe5e054cc33e1f0345b5526ce245f8ff9989e8ad55d556550565007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016e559a4ee2000004030046304402200447cd8069c3085a1ad6c57100503c1ecfa047f1c8338dc54633288f6d5ec59d0220075a04de4de2d5c3c1734b06fc2ce031355ce58b4e5799d1290e42b2bd34d9e1
 . . . . [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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