citizenlab.co

Issued by R3

About this certificate

This digital certificate with serial number 04:90:6b:90:f8:71:3b:66:7b:ba:b3:7b:60:28:a9:d4:21:f4 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): 04:90:6b:90:f8:71:3b:66:7b:ba:b3:7b:60:28:a9:d4:21:f4
Serial Number (int): 397592784688961487918835057392605069582836
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 85:33:e0:46:eb:cb:7e:cc:92:18:41:1b:d4:7a:a0:ab:0b:97:4a:1b
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): fb:6a:3f:02:c9:04:df:f5:c1:fd:fc:35:f3:2a:1c:2d:fe:84:b9:27
Fingerprint (sha256): d2:df:a4:ef:f2:46:d1:9a:65:d0:76:f6:22:d1:1b:33:80:f8:f1:a0:6c:e1:b3:e7:91:70:12:5d:ab:72:47:d1

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApbr6fpWbtGoTPgm7m/1e
SkDaMxqTJ1sO7LG9ZkTvD2xGPKQUYlaBPOm8Ng9wtsotCzBccgipKXPweGhtwRki
8XyS9iFSGJh5WMdQbZF6/i097raF/rMEp+Y2HI84mu4iHjePhcgJFtE3jFIYxb0f
6J+R/Z0ZTbwXJwjfQo78NkoSUzAo01X24Z5ZfPtWFweNFIlh8mhhP+drYqZyc5BV
BjJMIZJAgwfQkgZB/VSySO0rjsY6e5dOlFqlJfrAULYkuTq0pioey5RaneAGJAoF
19VwDiz/6mVHz+mPSjQhHIZ6y/KnzFBiP2zm4xXSUXQ72Lrj0OisG/ES+wGn36iR
wQIDAQAB
-----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 397592784688961487918835057392605069582836
 . . . . . . . . [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 2023-10-02 14:00:34 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-31 14:00:33 +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 20921522851238707357538597071625655304039272210326399901481232631069477426210594164875156336757151474368640390575735539522133361521527603041992055632818899194673163465418770028958479700678369901882673500148177884264302589807282495838477857224322235236797772238273062706729816235182922248973156102688375689260826220159148136374316427413204641754531378384404174663393714587299768402342212199828887760735637072069285784234160231187769876603223452905718844040695639924535793330913491870302137523355657185730956557040777717458818222449171818896282151636169556842729393376500758122495178040354199587775464585674309721690561
 . . . . . . . . . . . . . . . . . . . . [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)
							8533e046ebcb7ecc9218411bd47aa0ab0b974a1b
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018af0e7c1fa0000040300473045022044cafe35a50b4e7e1debc801acc7a91314bfd5148f165a074f95d2db927b9376022100c480d6fd6101599cb45b220d44a1af1e06e4b92cab5719ccd8f2fc6a7b2fa646007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018af0e7c3d400000403004730450220400158d612ceb19b831d58cabc6497db2577e0a4b8682fb4a88cac329e26197d022100c07740d4794b815395635b93a39e69a76c6e5c6d726d80740c9259a50f51378e
 . . . . [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)
		004d2a3fa3d7c6793f32b62af96c43686e8b74589dc11cda456e23e3959bc6e214f2f7bff2b71b3d7a32d065da88fe328d75960365d855911d75a95cf2f5abf6a690adf18737890e3bdab852ab64a864fb720f3ea53b2971b40afae8a714e3857f141259651e825fada3bccf2dd487a574e2256aff6ac7cbe7d768c88e70e2e9c0fc29cdd1a037398dc1578b11c97158fbd677d99332c818d9abd5f66aa2d5db8ba38ec56fccc357982d8342369d3ec5af19311cc6f1ebd16f6657450fd6f3017538a4d5072a509a6c886fe9cdf07fab099f04345c0da46618c131ec3a8f936c3f754d011d4afc84c56c431bfbd212cd82d6dd0f412fc924a18654f55ce5579e4a