smoobu.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:bb:cd:2e:cd:70:51:f7:eb:74:90:ee:e8:bd:68:65:17:ac 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=smoobu.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:bb:cd:2e:cd:70:51:f7:eb:74:90:ee:e8:bd:68:65:17:ac
Serial Number (int): 412354681092840770562732248261099264481196
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 16:cc:c4:d3:39:b4:bf:f0:ae:23:9a:81:da:40:88:31:f2:03:7e:1e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): fa:76:5d:4b:a3:9f:5a:52:0b:df:c3:e8:39:ed:37:66:3c:ac:42:99
Fingerprint (sha256): 55:e5:c3:61:30:2b:5c:45:57:3a:06:20:b8:c9:ce:bc:7d:a6:4b:45:cd:4b:b6:c9:b3:17:87:d7:47:23:a1:42

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 smoobu.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for smoobu.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

smoobu.com
www.smoobu.com

Other certificates including the domain name smoobu.com

(limited to 100 certificates)

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA1XKxaa62tJ28tyrN2Bfh
veZnUnNiTIDRepvXVArjfCWnufNoP1FF1th6Fyo//iAglFQ30wSf4dvpiCRVUrBW
G2xkrdzZWcFTthzW9r9MD22h0mqMbctEIVffuU+6uh/tFdz2niqUpmEpRMKxi7qp
//8DzTDaAIn2V/UfSCd+oGFc+Us0smTdz1m1Y5XLURuJAS7DFUx8TBCYCaNy6i2B
2cUxdjcUpf+KwcaW62lQwwD57hReZ+5C7z2dXeaT2hAH/dcD8hDbzR/9/CEwQqTp
dx9vlULaYHA3yP87sIEGehycMhtJQycVCh1f0mhpundAC3o1Tzs/b7uAzxzxyD8t
APxP2GDejL711IlxC4bFZ7iwhNt9NT9CL/N+jQsTVpT2jmgJL/PCAimFgShJqvdz
JqzAtx6p9h2bYq6820dLbI97S0Qs4NtWlCJ4M+ZRr4jpqw/uxcG2ZAHXxFK8D5Sh
F8ncr74JSBFPcbAGGAz44fkCfVxhDYOS+Sk8Jw9XKD3IUiXNgZ/gz5PY6mmVi4i7
JQXj0UJEGZSX7Ms3e00MTcYww6FRIQf/hKabtZBD10WBKYlFcGxob93op6L+Te83
bJGgfz4ng9/8CeBKYRTMiAZGPZxK77j5JTOyCuECB+XCeHn9QjucRy4teARX4z76
8lcky8PwsNoHhziNhofuzpcCAwEAAQ==
-----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 412354681092840770562732248261099264481196
 . . . . . . . . [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 2019-12-13 03:11:21 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-12 03:11:21 +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 'smoobu.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 870791947011490377097446537787128668035772975534871186436243777136406113648376738159480994098677074697329598956099564452202922225684408360522657738820660580566120826697205057265244298418401257757578265666863157989962479636216112881721220022505671835023649554502460393299300289448558631780180928836284750518498220865159953635531965418488662883823557123850916028503646922426736923484029620318096051203343760862794016714284269489858906953344246763200743010743222786407487661894133231432547482623847687084717656929302427417623714463814073446041875197340499812356154067807982645348565381637367885491531179622407695148075307903449516522524520074485888762725912003496964021522575837523541660691764571160090497210196699537022022696776532246959467187898132953580216631302719758677921635593974547617789882743022074902040513552326003108723171123045164527664449657095849667321679320939710837213959008326115364480083469367164645945920611532024734081752443848495392872122968139323565527923458360798266907870507180610389431474017895908180436845980108867224839908030678186765113094800429699788501831907467323290778894021116715034881266621981584173660905759990289457830271586700837047431376053758568931280048373003939248126431125749150861721986846359
 . . . . . . . . . . . . . . . . . . . . [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)
							16ccc4d339b4bff0ae239a81da408831f2037e1e
 . . . . . . . . . . . . . . . . [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 (30 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'smoobu.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.smoobu.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)
							00f10076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016efd74366c0000040300473045022100e81446bd8014d979a641b347e4bfe0569bdc23c48a80e28fd1635a80f2f1ed43022066064244ce938fa4310b0897e865e2132c2e2172bff7ac29c08685d3d80e3606007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016efd74382e0000040300483046022100ee0103394cdf93da5a4e4a563b8e6f507f07906ea0a3884ba41e04bd57d05e95022100d07eab74e82226953b543ba3d89ac80580bbbafde323b472dad088bd02e5c715
 . . . . [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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