12cu.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:ca:2f:d4:a9:d1:48:9d:42:55:c0:14:49:ae:cb:44:bc:10 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=12cu.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:ca:2f:d4:a9:d1:48:9d:42:55:c0:14:49:ae:cb:44:bc:10
Serial Number (int): 330137473840354592006889463035966697815056
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: cf:98:af:2f:a0:e4:04:5f:79:29:27:55:95:15:6b:f9:7d:1c:f6:c5
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): f2:3a:e2:17:ab:2c:f0:07:8f:3f:b9:34:25:e6:b8:ea:4a:41:f8:16
Fingerprint (sha256): 8c:10:93:99:b8:3c:1f:a1:1b:6e:3c:37:58:46:0f:1e:60:dc:ad:2d:14:04:96:5d:64:cd:0f:41:4a:3c:22:21

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 12cu.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for 12cu.com

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

12cu.com
www.12cu.com

Other certificates including the domain name 12cu.com

(limited to 100 certificates)
12cu.com
analytics.fontys.12cu.com
office-analyzer.fontys.12cu.com
12cu.com
12cu.com
support-canon-test.gekko.fr
12cu.com
12cu.com
12cu.com
support-canon-test.gekko.fr
portal.12cu.com
kpn.dev.12cu.com
12cu.com
support.dwsford.it
support.senapsis.com
support-canon-test.gekko.fr
12cu.com
support.tecamb.it
support.tecamb.it
12cu.com
kpn.dev.12cu.com
12cu.com
kibana.data.12cu.com
12cu.com
12cu.com
analytics.fontys.12cu.com
12cu.com
12cu.com
support-canon-test.gekko.fr
12cu.com

Certificate

The complete raw certificate details for 12cu.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqrDtX14kI7XCf2QPqi/b
M8x32ITr1PyOwTK4FP/tL7S3aSmy/z21HRMSOKWduzdwMdcGAIbMYVii9DcJ+kf3
JoIaO6G6PcfXIYkI8bzodAd6xz/eA2hloGUdOO1FRNnqt3xaap+ROgKtfi+DfYg/
AaKcYaCoBlxZVjOjFG4vmhvsluc80WW910TVLLkKtLo4p1Wq2MT9KNkLZ9ieNU4W
lOJENGKDxfqQUQjK6HINb6sHfZX1FCF05Hzqz2KQ2Z5swVZxwV4g/MfrF/IDTbV+
/Ffs1vxqXIq2qfIuk019TH6GPkxxjqzja1BTJrcyNtzs/TRLIooSzX5Fn0VRvakK
sQIDAQAB
-----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 330137473840354592006889463035966697815056
 . . . . . . . . [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 2019-12-08 09:58:14 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-07 09:58:14 +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 '12cu.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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 21547757916227226970199122207209815456560146121602724085749523448016373443219500132606035873740307340018307126910140088404273861908079259992490610081572965354966215719322721304629571013018848367454450258561842174841810988168412258156453554054537777504575020011953296707830892268403873270286755851448832476782033750116570194519115925378024103145951494168304377476414198612156469090441652540542279147762408453760552493346308796306380302337748099538902375267813954471937854202019925301600094457133843634711690333857040981326758709252868921945074966380253323763028058847962748182698668927844685035127872305977040705227441
 . . . . . . . . . . . . . . . . . . . . [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)
							cf98af2fa0e4045f7929275595156bf97d1cf6c5
 . . . . . . . . . . . . . . . . [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 (26 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '12cu.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.12cu.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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f2007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016ee528ed610000040300483046022100a54502a6212f22fb03b2e6a45e736dcd2164d12d1fc0153a57246eaf7b915a030221009b3511d4d5b66d4b01f3e2a417f3a0ead1046a463923253eaeb12e0af93afef000770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016ee528ed8d0000040300483046022100bbd430662267690375e74393cf96599e0440fcf0cfd2d6f5acaa545b396661e4022100833d39e7039123fd33716d0835a152de9ccebf9dc480e12bf6ed407510c4e49d
 . . . . [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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