smartcitiesweek.com

Issued by E1

About this certificate

This digital certificate with serial number 04:eb:29:ac:af:0e:c8:30:0c:4c:92:39:f7:22:be:96:68:d0 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=smartcitiesweek.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:eb:29:ac:af:0e:c8:30:0c:4c:92:39:f7:22:be:96:68:d0
Serial Number (int): 428470894926941205044256316593029707622608
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 8b:ac:86:34:68:78:b5:7b:e3:f1:48:4d:18:ab:06:dd:07:f1:a4:c9
AuthorityKeyId: 5a:f3:ed:2b:fc:36:c2:37:79:b9:52:30:ea:54:6f:cf:55:cb:2e:ac

Fingerprint (sha1): 0e:82:b9:ee:a6:42:df:b2:f7:b9:9d:e0:e1:75:b1:95:19:a1:9b:58
Fingerprint (sha256): 1b:5a:29:c6:db:cd:88:89:ef:13:64:9e:39:14:c8:23:0e:9a:5f:c3:92:d3:b0:25:a6:cf:88:27:96:0a:7e:00

Issuing Certificate URL: http://e1.i.lencr.org/

Revocation information

OCSP Server: http://e1.o.lencr.org

Check the revocation status for certificate smartcitiesweek.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for smartcitiesweek.com

Public Key Algorithm

ECDSA

Key Size

256

Signature Algorithm

ECDSA with SHA384

Key Usage

Digital Signature

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

*.smartcitiesweek.com
smartcitiesweek.com

Other certificates including the domain name smartcitiesweek.com

(limited to 100 certificates)
washington2019.smartcitiesweek.com
smartcitiesweek.com
insights.smartcitiesweek.com
smartcitiesweek.com
insights.smartcitiesweek.com
dev104.mci.smith-and-williams.com
washington2019.smartcitiesweek.com
smartcitiesweek.com
australia2019.smartcitiesweek.com
insights.smartcitiesweek.com
smartcitiesweek.com
smartcitiesweek.com
australia2019.smartcitiesweek.com
washington2020.smartcitiesweek.com
smartcitiesweek.com
sandiego2019.smartcitiesweek.com
insights.smartcitiesweek.com
insights.smartcitiesweek.com
dev104.mci.smith-and-williams.com
dev104.mci.smith-and-williams.com
washington2020.smartcitiesweek.com
australia2019.smartcitiesweek.com
dev103.mci.smith-and-williams.com
dev103.mci.smith-and-williams.com
sandiego2019.smartcitiesweek.com
www.smartcitiesweek.com
www.smartcitiesweek.com
australia2019.smartcitiesweek.com
dev103.mci.smith-and-williams.com
smartcitiesweek.com
smartcitiesweek.com
smartcitiesweek.com
smartcitiesweek.com
smartcitiesweek.com
washington2019.smartcitiesweek.com
partners.smartcitiesweek.com
sandiego2020.smartcitiesweek.com
smartcitiesweek.com
dev104.mci.smith-and-williams.com
australia2019.smartcitiesweek.com
dev103.mci.smith-and-williams.com
australia2019.smartcitiesweek.com
australia2019.smartcitiesweek.com
partners.smartcitiesweek.com
smartcitiesweek.com
smartcitiesweek.com
insights.smartcitiesweek.com
*.smartcitiesweek.com
dev103.mci.smith-and-williams.com
washington2019.smartcitiesweek.com
smartcitiesweek.com
washington2019.smartcitiesweek.com
dev103.mci.smith-and-williams.com
washington2019.smartcitiesweek.com
sandiego2020.smartcitiesweek.com
washington2019.smartcitiesweek.com
sandiego2019.smartcitiesweek.com
smartcitiesweek.com
smartcitiesweek.com
australia2019.smartcitiesweek.com
smartcitiesweek.com
smartcitiesweek.com
dev104.mci.smith-and-williams.com
*.smartcitiesweek.com
partners.smartcitiesweek.com
washington2019.smartcitiesweek.com
washington2019.smartcitiesweek.com
australia2019.smartcitiesweek.com
washington2019.smartcitiesweek.com
sandiego2019.smartcitiesweek.com
partners.smartcitiesweek.com

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE9iVCa7DoKI6t5NtmN0iCDHh/kUNi
VDp5cO8PgioWheD2omwNK9Ww3tE7Y97FLMOkIt2ZGI7iKuuIe5ErMgfjCg==
-----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 428470894926941205044256316593029707622608
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.4.3.3 (ecdsaWithSHA384)
 . . . . . . . . [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 'E1'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-15 15:43:50 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-14 15:43:49 +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 'smartcitiesweek.com'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.2.1 (ecPublicKey)
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.3.1.7 (prime256v1)
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (520 bits)
				0004f625426bb0e8288eade4db663748820c787f914362543a7970ef0f822a1685e0f6a26c0d2bd5b0ded13b63dec52cc3a422dd99188ee22aeb887b912b3207e30a
 . . . . . . . . [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 (1 bits)
							0780
 . . . . . . . . . . . . . . . . [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)
							8bac86346878b57be3f1484d18ab06dd07f1a4c9
 . . . . . . . . . . . . . . . . [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 5af3ed2bfc36c23779b95230ea546fcf55cb2eac
 . . . . . . . . . . . . . . . . [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 (73 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://e1.o.lencr.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://e1.i.lencr.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 (46 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.smartcitiesweek.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'smartcitiesweek.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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018d0e0208e300000403004630440220536ff06e659a7e3738ba53f21e5a181df4b831363855bf50e81cd30b2e9d72d40220129dc4139586864249453af998723164f689b52df55f7bab6e287cab0013ddd20077003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018d0e020a600000040300483046022100f9c7682b874046db5ef82fe35b2df0a6a76615f0d54924254b8f1dcbd94aaf05022100da8d7831aa745976583c02c515862ae51ea2ad437fa9edbb630f4e0b3f16ed6c
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.4.3.3 (ecdsaWithSHA384)
 . . . . [c:0|t:3|false] BIT STRING (832 bits)
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 22971417152667870698134915783823348536446520047781761947185776865728149740839027306074798657019709940808468834281136
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 21888386228177974211109372019020841279018665085126970900557305413541371327550854008728841494145391597897151872627697