smartcitiesweek.com

Issued by E1

About this certificate

This digital certificate with serial number 04:6f:3d:79:f2:e1:1d:8a:99:63:c0:03:f9:b3:1e:bf:4f:ca 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): 04:6f:3d:79:f2:e1:1d:8a:99:63:c0:03:f9:b3:1e:bf:4f:ca
Serial Number (int): 386302202557106521884144143954772070715338
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 33:c6:d6:35:eb:b0:b2:e6:be:40:d9:0a:ff:82:35:8d:37:33:9b:10
AuthorityKeyId: 5a:f3:ed:2b:fc:36:c2:37:79:b9:52:30:ea:54:6f:cf:55:cb:2e:ac

Fingerprint (sha1): 5f:92:d6:c2:ed:38:10:ab:7a:87:44:98:c3:a0:dd:15:e3:22:7c:58
Fingerprint (sha256): e9:2a:08:87:f1:43:e7:9b:b4:55:01:97:3e:0b:c2:c9:dc:d5:4d:a3:91:4c:08:3b:13:a4:d9:84:2c:3d:80:6c

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-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEvUYX+qEk5rf6x4AlJJbBC8obfufA
ERRX19BxhepETQDARVk1fZQdArGxYj+cSYkmXqewGBnkY5Xn6Ck6xD/OAA==
-----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 386302202557106521884144143954772070715338
 . . . . . . . . [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 2023-11-17 16:23:15 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-15 16:23:14 +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)
				0004bd4617faa124e6b7fac780252496c10bca1b7ee7c0111457d7d07185ea444d00c04559357d941d02b1b1623f9c4989265ea7b01819e46395e7e8293ac43fce00
 . . . . . . . . [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)
							33c6d635ebb0b2e6be40d90aff82358d37339b10
 . . . . . . . . . . . . . . . . [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)
							00f00075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018bde4ee92f0000040300463044022059fcbad8d5e3f8f2d68dec08bfd6d1bf8360af4411962c6626b0786ac2f9c20d022070fcb1db8105a1bc9ea1abc99bd03cba90fde88f542b70b471e463834cc4248000770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018bde4ee93e0000040300483046022100c91efb499dff485bc93d67946bc721efb7f6970b9a913e227bab96230d1a7b63022100b3766bda8659ea1dff3bae87d0e260f315ae8c4bb2ac3de12a51bdf191d82855
 . . . . [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 (824 bits)
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 10305501737357033864692583475816838718939114087102858489915428310638328299311660577053497121622568406542626626574327
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 33913827081440381078372860345646251815163256054847339551109265313085695968921826200311953891197781625754848808151799