12cu.com

Issued by R3

About this certificate

This digital certificate with serial number 03:a9:b1:72:68:e2:2a:25:c2:8c:3c:2b:57:f1:13:4f:b8:0a was issued on by Let's Encrypt.

This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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=12cu.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:a9:b1:72:68:e2:2a:25:c2:8c:3c:2b:57:f1:13:4f:b8:0a
Serial Number (int): 319080445209304350872426897613428643313674
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 46:76:1f:f7:d6:e2:01:cb:f3:0e:4f:b8:c5:f2:f3:94:20:2c:d5:a3
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): ae:62:80:71:9e:53:02:44:07:79:cb:d2:69:13:68:73:c2:21:f3:cb
Fingerprint (sha256): 82:70:f1:83:bf:22:f0:74:aa:0e:2e:b0:e7:67:e6:37:f3:6d:81:36:7e:bd:17:6d:45:43:38:45:a7:78:5b:4e

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

Revocation information

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

Check the revocation status for certificate 12cu.com

1

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

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqVP8X6fZfjpzVqFlra2T
2S7p6EZT4afXGXEsVNpEEfeYONiaY+TX9eYVb7cHPfHmyNK5XivNvAmAovlIrhxQ
4KWQ1dWWrd5NrkaE4+r+Gqi//zxOpbBtiaYJ6tcqIKQ2wtrnOqNMQ5ESTqLWgT3z
oMXJJyIeoSX7oE3ppKmNNm3pdjnoBlTcFpRZM9F+z2n9livhvdy8g3CqDO5+3uO/
++SQ/Akzx+u2gDUc0utkl03HT14qBz9i2frkpiT9CoZhHIHoPo4Try17+aDnxveR
uJ92DztfFDvncD6IdqyFX2ZJk+eVeqjyAfyGc5j3m5QJhvtzSgV6ZWdAzdVls5VH
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 319080445209304350872426897613428643313674
 . . . . . . . . [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 2024-05-15 10:45:10 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-08-13 10:45:09 +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 21375688497856672038925691699889007613820542714236628938480791639079200545879228415046814982920916637883142554711252041250942448802861535337128103406453255892271479974988478509369747020748637499721830972707774593006429241397304473804755926215238119521272791437734125132357408891943085654342643055324065821781256175412265582667139763297376198437984339812033191994816494767960508151861149415540291683963353133206965421803031991754735685270910080736309651584412719917490304285944440939578201837772524203488324251111224901896242981158320994740537344055968169048164699801997741785246745329003377487957602757398950525093809
 . . . . . . . . . . . . . . . . . . . . [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)
							46761ff7d6e201cbf30e4fb8c5f2f394202cd5a3
 . . . . . . . . . . . . . . . . [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 (12 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '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 (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)
							00f0007700eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018f7c1213560000040300483046022100f089727ac2dc1591e90b01c94e551c15f1f76816ffd3ecf66fc95bfbb90bc6b202210096f9344fe5b7b440ae40fcda05aa179c637815afe86711c74e03496db1be2d9900750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018f7c12145a00000403004630440220410c6665f3edce7f8f3be8cae3c5675694f1dea6370b2287e92859435fa437b302204837710f80efa04530b29245743534f0e0c593023a460f18855d2b57382f1514
 . . . . [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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