34169.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:c1:06:29:6f:7d:20:ee:74:bc:72:59:79:05:05:b5:fe:d7 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=34169.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:c1:06:29:6f:7d:20:ee:74:bc:72:59:79:05:05:b5:fe:d7
Serial Number (int): 327019545124428950927021740564713060040407
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: b4:18:bc:c4:0d:0e:23:44:a4:ab:7f:ed:3b:4e:77:64:f5:ac:77:cd
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 73:e0:bb:24:9a:a0:04:94:9c:b1:9d:93:bf:95:f1:b6:23:3f:bb:a1
Fingerprint (sha256): a9:4b:d7:93:bc:c9:85:cf:02:c4:54:4c:53:2b:88:e2:1d:70:6c:c9:81:91:11:2b:67:7e:e3:50:10:10:77:ca

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 34169.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for 34169.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

34169.com

Other certificates including the domain name 34169.com

(limited to 100 certificates)
34169.com
www.34169.com
duilio.org
78281.com
www.34169.com
www.34169.com
34169.com
34169.com
34169.com
www.34169.com
www.34169.com
www.34169.com
www.34779.com
34169.com
34796.com

Certificate

The complete raw certificate details for 34169.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 327019545124428950927021740564713060040407
 . . . . . . . . [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 2019-12-15 15:45:31 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-14 15:45:31 +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 '34169.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 828827387979564801351518384118877808870014688149511885594004778171057066210618169674450712747373406547229531937562363740700744430397887244850662227790549033653167286213055449266388278271051562254481945555324213692637862067189583894471141881529954057747441875194830896306801390105149318695151251636894847423312653737845064027885891071713053650851232190439797049106626849632886736451506363836150694981563247372199139188232695354444094087579339893943005245703659116509162470410403312926217557403983659694892973705898712418878983752827716658433925469374495634218545267476845577487682548009925900114009418117092470535028500759320415130412642715244013966380106206550505291732218553291458956025122367044834250893825850682432606188382611881699274257888095445573358005520027245294225590122395723465080508733037561810213835752008613878152734438667604601458178199935623009011594973985798692725277857724766290566804950156713293050510568053606189587031073541696573475409231363987838361519065257502744724646713171886095133502231183072424218826233442928454851059934619381679455708518796968408433801970691416607504512926293152239661450365246644089782994867041006441185406789395223854399977120424460168959705957310243478513458675513013356089080723243
 . . . . . . . . . . . . . . . . . . . . [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)
							b418bcc40d0e2344a4ab7fed3b4e7764f5ac77cd
 . . . . . . . . . . . . . . . . [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 (13 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '34169.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)
							00ef007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016f0a736157000004030047304502203fc05e3e7fd96d90541e167fb06cf4f236a9bea1fdc0f6327f693871bd0a3dcf022100f63f3ff4ff10c19c59a5a3ec4fa36ce58e20603800be980428f1f72772f6717900750007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016f0a7361840000040300463044022042c1e9b592387a60345396a68df9e15dd16556f9ac083f250259573ebb257d6c02202c09ec8c549a478fdb53d2e2f83857b6969c12b928d2baf6345fda2d0f19e970
 . . . . [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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