citizenlab.co

Issued by R3

About this certificate

This digital certificate with serial number 03:59:c7:e0:5d:fa:e6:b9:9c:5f:32:91:a1:3a:ac:f6:9a:4d 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=citizenlab.co

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:59:c7:e0:5d:fa:e6:b9:9c:5f:32:91:a1:3a:ac:f6:9a:4d
Serial Number (int): 291887669803044312958360914788397230758477
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 18:6d:0d:89:14:d8:dc:74:ee:e8:51:13:56:30:f3:25:6c:50:64:94
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): c4:07:b7:3f:48:00:77:95:a1:95:f8:d6:bf:59:7c:36:5e:9b:96:8e
Fingerprint (sha256): c3:4e:19:f1:f3:a9:40:92:1f:73:21:51:63:9d:f7:a2:7a:00:68:65:b6:5f:8b:d2:cf:fc:54:38:b3:4a:fa:7e

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate citizenlab.co

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for citizenlab.co

Public Key Algorithm

RSA

Key Size

2048

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

citizenlab.co
www.citizenlab.co

Other certificates including the domain name citizenlab.co

(limited to 100 certificates)
*.citizenlab.co
*.citizenlab.co
*.citizenlab.co
citizenlab.co
*.citizenlab.co
citizenlab.co
*.citizenlab.cl
*.citizenlab.co
*.meinaugustusburg.de
pl.citizenlab.co
*.hq.citizenlab.co
citizenlab.co
*.hq.citizenlab.co
*.hq.citizenlab.co
*.meinaugustusburg.de
citizenlab.co
api.inspire.citizenlab.co
citizenlab.co
demain-mont-saint-guibert.be
*.citizenlab.co
citizenlab.co
*.meinaugustusburg.de
citizenlab.co
*.hq.citizenlab.co
www.zukunft-pfaffenhausen.de
citizenlab.co
citizenlab.co
www.schiedammersmakendestad.nl
citizenlab.co
*.citizenlab.co
www.zukunft-pfaffenhausen.de
*.citizenlab.co
citizenlab.co
citizenlab.co
*.citizenlab.co
jobs.citizenlab.co
*.hq.citizenlab.co
api.inspire.citizenlab.co
*.hq.citizenlab.co
*.citizenlab.co
*.citizenlab.co
epic.citizenlab.co
citizenlab.co
jobs.citizenlab.co
*.sandbox.citizenlab.co
jobs.citizenlab.co
*.meinaugustusburg.de
demain-mont-saint-guibert.be
*.citizenlab.co
jobs.citizenlab.co
design.citizenlab.co
*.hq.citizenlab.co
*.citizenlab.co
on.citizenlab.co
jobs.citizenlab.co
*.hq.citizenlab.co
www.zukunft-pfaffenhausen.de
www.zukunft-pfaffenhausen.de
citizenlab.co
*.citizenlab.co
citizenlab.co
citizenlab.co
jobs.citizenlab.co
jobs.citizenlab.co
citizenlab.co
*.citizenlab.co
citizenlab.co
www.zukunft-pfaffenhausen.de
jobs.citizenlab.co
citizenlab.co
citizenlab.co
*.citizenlab.co
citizenlab.co
*.start.citizenlab.co
*.citizenlab.co
*.citizenlab.cl
demain-mont-saint-guibert.be
demain-mont-saint-guibert.be
*.citizenlab.co
*.citizenlab.co
*.meinaugustusburg.de
demain-mont-saint-guibert.be
*.start.citizenlab.co

Certificate

The complete raw certificate details for citizenlab.co in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0m+jQLO9R2c9cegjJuW9
hOPVUyqkYnOzE8qjXdTzrbb8wj3z927F0n9sF+pNlsAndbU9ByMtEWEw+LFs9Zh4
2GOXZIjTLDP9TCrrJSeRBJhgRqgE7BeIUZo6uASWzKVIwLyfb7mk/AEOyxpHBfZA
fLDiQ2+ctQippnwIVxTLG0vDVJBy6oTgqlTr7ki0cBwDUgLKWLw372gH6uVpFPZ1
xKGtZzWbc2IXGC+DjHzSS0EcRYlss0/aSXfA7GbMXiRtnxx3clQjnF4s4tCawI6B
mQd7JrgrVmINl2JIKFhOjaQMaGyO6NxcWM2dThqRGVYF0uKMQvO7e8c+Ap+EElG4
EwIDAQAB
-----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 291887669803044312958360914788397230758477
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-01 21:10:16 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-29 21:10:15 +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 'citizenlab.co'
 . . . . . . . . [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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 26565094647477765015457780995920569241799475333219002213216355689910242706739572787891703222614027793040297192996049589438305211550491354409484195621484186356037755460031738885341888168185656354968934849548649512489229919908098614536934368827638468998328966016237503750293089192823510164254555366302293286581977554706985234891412465327152704678525875708250678010264263133323363458171449248050337323433092654019641821359681098488461613776377875274045536251927018981903630651841412417836824678200280316447464539927604782819513295549880863401558189747342411612379087160151980598777979489102685150882667453193822147819539
 . . . . . . . . . . . . . . . . . . . . [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)
							186d0d8914d8dc74eee851135630f3256c506494
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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://r3.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://r3.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 (36 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'citizenlab.co'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.citizenlab.co'
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c276eb916000004030046304402203b74fa2e046cfbe2a9c6d36b48c11b0f9e01a3ff93e32a8c727adc50fe5f37d80220750e8efc3856e10430da4e79d351f22ea65117a3b97fff2dadfde814addc616a007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018c276eb98c000004030046304402205aae9fef1a2435986f92388e6306a465eddd040974c149a9afda6da01fbbfc6d022069b984f2e4bcbb5208b4f568dd5036509358037652f7fb6feda93c820a6e36cb
 . . . . [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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