www.44976.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:58:5c:cf:ba:7d:36:51:04:03:98:36:f7:93:7f:32:c6:68 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.44976.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:58:5c:cf:ba:7d:36:51:04:03:98:36:f7:93:7f:32:c6:68
Serial Number (int): 291405073647833770420246176885790634853992
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 9b:a2:47:96:d7:c4:89:35:c8:ee:a0:62:24:0e:7e:2c:04:7f:24:34
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 0d:bc:df:2a:c7:8a:bf:c6:e1:13:e2:3a:07:21:84:f6:96:8a:63:9d
Fingerprint (sha256): 9d:1c:4b:d2:a8:3f:af:82:ba:03:33:2a:0d:d5:5d:4b:13:60:98:8e:56:c8:4e:8e:3c:84:d0:fa:b5:d4:c4:17

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.44976.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.44976.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.44976.com

Other certificates including the domain name 44976.com

(limited to 100 certificates)
34082.com
44976.com
obrero.global
www.44976.com
44976.com
44976.com
haack.boston
calolziocorte.org
www.44976.com
44976.com
www.44976.com
www.44976.com
exoplanet.world
947.me
44976.com
45924.com
www.44976.com
narlei.ca
www.44976.com

Certificate

The complete raw certificate details for www.44976.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 291405073647833770420246176885790634853992
 . . . . . . . . [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 2019-09-30 05:03:22 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-12-29 05:03:22 +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.44976.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 842556920863851752384874433482911542575684843012782329967102751742530552641474755984961749512474842446108044545587353716860645173714727049280444017566962848008782517743529525492494882525078960959161262139860781001331626653996827676150604987408256434571770011354512004002032174108186034723012031823315302008168400160311912031994970103948465031784016432106874218795695179568288053713793411113021901308202258100213603610079941944302286295682016825742237988556341889340564853464016226389075115883564980585245852128878418327706872445142580661514306346779718269935451079934143029540419751029178945533373042368531672606519669949053981400712490544097839578809064519715605562514831893753875879377596360263759986149775510620842277546474332194081467666219785281516710648870281274130027717934811125311803210164844143455360908374106702473585811847837631461213171711366587863319763389441558693216035654974980916675889882876270345697103248098915163242956886356415968974547377973079450250371249236661408225518847579138661829425655466575003235968223983594184898462181721879739243650715154447350800801760476818560770896818693111306987349667036355995097933281887268792248941952865355417467334659640908616930073163457419286376136857680655468045080804429
 . . . . . . . . . . . . . . . . . . . . [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)
							9ba24796d7c48935c8eea062240e7e2c047f2434
 . . . . . . . . . . . . . . . . [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 (17 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.44976.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016d80c42b89000004030047304502204da6cd62910a5002f208bed21d402c6aa75b491369176b6abf00230b84efcf26022100acde80a12cd12ebcf10ec5969623659742866b57067d9cd11e8defbbad5bc700007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016d80c42b8d0000040300463044022008ff12fccef5e657a8d6e4f52509b7768182b69d0fde65177d9bf59974a6d75e02204bf433e1d83f1ca0f5eaa4cea3fdfffcbb8e3912b7f046f83983dc70f4b18589
 . . . . [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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