subscribe.kooapp.com

Issued by R3

About this certificate

This digital certificate with serial number 04:d4:13:b3:64:b8:5f:3b:6c:6e:bd:a2:44:76:86:d0:1c:a8 was issued on by Let's Encrypt.

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=subscribe.kooapp.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:d4:13:b3:64:b8:5f:3b:6c:6e:bd:a2:44:76:86:d0:1c:a8
Serial Number (int): 420615192310185947158868146192766131510440
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 24:aa:e4:e1:50:85:84:84:a5:89:37:af:6d:a2:d0:3a:f6:16:cd:b2
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): d2:ee:d2:84:d6:fd:b9:a3:eb:f2:3c:fb:0c:b9:f1:f0:a8:08:dd:ea
Fingerprint (sha256): 1b:49:19:5a:c1:57:41:4a:ed:88:0b:e4:3c:ed:3e:1f:aa:3c:79:40:a5:69:4d:31:ff:21:7f:8c:e1:bb:c2:3c

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

Revocation information

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

Check the revocation status for certificate subscribe.kooapp.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for subscribe.kooapp.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

subscribe.kooapp.com

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Certificate

The complete raw certificate details for subscribe.kooapp.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0KfAppLmmiVUR7ejP0MX
SPNFRlg5cwq5GY+SFVMAf8GaEhqCjWsnuvEDzVMYwdoh/UhJKkI3aa6qeMSf7HBJ
xFgcyUcf8BONQVRQI9dvIcGNOIBk7NVmF92Kye2O46JUSjrh3Pc5cN1rOHoqqJXS
1IYuRIXNqLvLR1dr6gSMeg2+geXCF65JRLV65bhv/QQeXChcb6klKPMGHFFG7cZm
8e74/EPhLvLiMYUu8kfoDzV9O2ROHyv7yrkjzm2wiQAzKxK0nW1dm2r1c6zjtudx
YOzwJ4T0vcc/wx9Sx77D8t9wAL53HV2lMysC/+LpKhjOc3ExCawJvIN6bj9ZEdWr
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 420615192310185947158868146192766131510440
 . . . . . . . . [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 2023-09-12 06:33:05 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-11 06:33:04 +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 'subscribe.kooapp.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 26340289294345833286546888389330895262887330325450113245680158624037110948334887100669159356331318215312256690366952017504663106897808587840832524725460245153503140618730543688506764029193226073735981367879017108856712607365627176784179360128070968091725800187097765974040871960485034288225716127704543314358172271682723660187001098154034947058447686225904114719345070691752168832258657684480915003235723795401370162951731459528892151301249129994364214535659153791758016914034313457346823726688173078432659492965831453833416302540958022534353525734101925519270624431717690058114244466789590430551367967297534518733657
 . . . . . . . . . . . . . . . . . . . . [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)
							24aae4e150858484a58937af6da2d03af616cdb2
 . . . . . . . . . . . . . . . . [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 (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'subscribe.kooapp.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)
							00f00075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018a884ee2f5000004030046304402201aecb90d2781f95e37ffc96470600b04f5b14f91c069d4ffa025d6bfd86d32e602201018700cc249580872a0cd9963fae682856b54dd39c909035a212e4ab1351971007700e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e0000018a884ee30e0000040300483046022100fef09e0044400de193a1ebcefdab72b0ee2c0e00d71539b548dd848c23dc50c6022100a3b13e854062302ea29b48c9847af1e8023df22c028168aad4a404a01c685cf0
 . . . . [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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