www.35451.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:27:bf:59:58:d6:4a:3c:5a:48:9d:ef:ce:ef:f0:39:24:93 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.35451.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:27:bf:59:58:d6:4a:3c:5a:48:9d:ef:ce:ef:f0:39:24:93
Serial Number (int): 274862216568642515298354926099224896021651
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 71:27:34:83:06:6e:67:d1:ae:14:ac:cb:d7:45:9f:b6:5c:ce:47:b2
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): ef:5e:64:c4:40:04:27:cb:0f:68:fa:2d:80:bb:3f:1f:fe:16:0f:09
Fingerprint (sha256): 65:19:af:07:aa:7f:08:64:f7:7f:5e:6a:78:d4:5c:d3:4c:64:89:33:38:4a:10:bb:5d:b9:67:79:5d:45:f7:1a

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.35451.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.35451.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.35451.com

Other certificates including the domain name 35451.com

(limited to 100 certificates)
89270.com
athenawisdom.me
www.35451.com
35451.com
35451.com
www.35451.com
internet.exchange
www.35451.com
35451.com
www.35451.com
www.71702.com
35451.com
www.71760.com
35451.com
35451.com
www.35451.com
33724.com
34896.com

Certificate

The complete raw certificate details for www.35451.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 274862216568642515298354926099224896021651
 . . . . . . . . [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 07:03:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-26 07:03:00 +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.35451.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 836948376767319650034238720762816528324827833702320173855967364190200601400469562941044450147980158320954982490130430686429473859033265591855076914978051726961729727400114395491080648122867946309096980056531261087753733970494318365456771020783073562072280603127252721485984376171681884566534966126518834296080794563501378371607679850438769253291448739446263212793452521900058850974054480350374966162320002376148003165732245948773158763772839810342615989291098334007166216486903754228656523934480538168241563553282967973517974475843082331737366412957091517889303400194234133968826975107339194809461413205167332418194642062730019870904946371582451310474515462124434180207215985618408019748234199785756104911485212319026179651073145642843905234827855248036905156121154578073951453108444008934655568189294413502049000141337041969730487943342567699806006326146518611566559145236813931453787813079662417959206863502307577007596604825577952594534396250630851692994453535814598920271227944158025476220957285342948952356936637083159500491498952788543742242752508247268368028778984366191218181270975995232774629710539957407225623186573310470920701906843414242916397871545984565566068585105294461588623527362906064639210575295929657528796316827
 . . . . . . . . . . . . . . . . . . . . [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)
							71273483066e67d1ae14accbd7459fb65cce47b2
 . . . . . . . . . . . . . . . . [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.35451.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)
							00f1007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016afd76c6640000040300483046022100ea494089f1369b616f498804486ac36f509b7cdb881a3c11a5b4060d6f9b795d022100b7f1c345962b8238e50e587a778e44673d9910e881fb60b39933da86dfc1cdf1007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016afd76c6500000040300473045022100e79869873a347b3de5d72837de515f63c8d6a455bc353c07310daa26dcaab9bc022053968104fbe699c91422c1dcd7876a698712694279d6a1ac3a721ae7159ee2f4
 . . . . [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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