www.mississippiblogs.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:7b:52:0f:57:36:e0:df:c6:17:13:14:81:0c:35:b1:2c:84 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.mississippiblogs.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:7b:52:0f:57:36:e0:df:c6:17:13:14:81:0c:35:b1:2c:84
Serial Number (int): 390412951207341210178060784919349377969284
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 2f:bc:83:1f:8c:c9:01:07:fd:77:bb:4d:03:02:d4:a5:46:be:4f:78
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): f3:78:42:e3:cd:cb:47:09:77:de:73:c2:b2:7b:b2:81:88:b5:ac:e9
Fingerprint (sha256): b0:ce:ef:dd:be:25:b6:77:66:80:3f:9d:f9:b9:11:47:28:17:35:46:8a:bb:d3:a7:11:21:d0:0a:97:df:61:15

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.mississippiblogs.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.mississippiblogs.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.mississippiblogs.com

Other certificates including the domain name mississippiblogs.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.mississippiblogs.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 390412951207341210178060784919349377969284
 . . . . . . . . [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 2019-12-11 17:35:42 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-10 17:35:42 +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.mississippiblogs.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 923223692705569582529911673221394323829186072710262256847898136210576276087679380443178925591248924126701030905411349593922994501827409283865514117058603395369444223157786819947014285385614109309550311883568504262160398078126366709118416637248667701808980723989567282668609754213437246090617845687273179502038141314752564274969358221406917958788769691624062156261555944295897304145606120469839110831361757643595906036810129900336734593304458698650158298536903284855534608931839691806241546957982691165060687628919491765446935568563707764162349637978960455742453600785421239144736696441802558144439568877380876719109376337153585493022655793633785450516361249556199521101917399706637498952273788671158054466586855412750007914170000291234083338453652150590773751396043150440906738028323246820463097685578046479679951311876732427017761313925271388486582109077189647743623641959653461096481406884637803631057163406163365359341788752510371266145362283304565612218619965496316645000560979427461801482350542149850388527597180711451422270137069219428280487741977248466345040704862593280703390718634262645713975894245524847137936906711190844129469740921240176930952271814428485679765042872849828472804750208881096419495523262816619578143756213
 . . . . . . . . . . . . . . . . . . . . [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)
							2fbc831f8cc90107fd77bb4d0302d4a546be4f78
 . . . . . . . . . . . . . . . . [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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.mississippiblogs.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016ef63ed14a000004030047304502203764a9b10409abda72b05221eb1dca3e1c48727155a3e9e0b667bc838aaa20a4022100c495818f8a0bf22e5898fdc564e9b9adc2c20eea05b219c19f059f4552f6626b007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016ef63ed1470000040300483046022100fdb2efc20b7daec1f66b6dce31641991a748e2b19a8e7bafde5bfc93e878fd18022100e3fe7fca7a15f6e5ca79ac33ac939ee5e59b0eb9bc6b64e79ef29e72bb44468f
 . . . . [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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