*.seren.app

Issued by R3

About this certificate

This digital certificate with serial number 04:13:b8:67:c5:8c:f2:de:10:2f:b6:a3:7e:51:b3:5e:dc:a6 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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=*.seren.app

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 04:13:b8:67:c5:8c:f2:de:10:2f:b6:a3:7e:51:b3:5e:dc:a6
Serial Number (int): 355159625463141469501882576625364721654950
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: a8:b8:c9:21:cd:53:26:95:f3:46:73:c9:a8:4c:8b:a2:b0:b0:06:0f
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 05:3e:f2:a7:0b:9a:0d:68:e3:ce:ce:6c:86:fa:d9:05:05:04:46:d9
Fingerprint (sha256): 4e:4c:23:40:b6:75:11:22:83:94:b6:46:9a:13:30:c0:29:d0:69:6b:3d:9b:1e:fb:e6:bb:af:9f:2c:35:77:87

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

Revocation information

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

Check the revocation status for certificate *.seren.app

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for *.seren.app

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

*.seren.app
seren.app

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Certificate

The complete raw certificate details for *.seren.app in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArOj/i48BdZg0cL3nijQe
twEKXPppWIjWat+XV0JvdgwDNLYIVAdK85WidWP2Iy1LrL9y3zKDUdp9rm9+tRe/
b/i0zb0RDKWrcoTdbKxhslj3B4QDwazASE0HLsLKE600AV0IHYT/KXVY5hD7Dd5i
n/+ehP2AIJiPtd4koFveUcu1IBRsLkaH7ggPYKjRofVthYAcS6wCXgyNvUyyKvH9
ZIe0L1qGBPyVyq4Fs2eMEpGF2E2vNqSkPNE9aA4gzc+h+sg+LRw9cRb1n/ykQ9j8
EDhe7dnAgn+7HOCXVfD+CTfEQp2B9Yc4bB5HVhktYZHyjADS1WXsK7EwclAcr6LQ
PQIDAQAB
-----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 355159625463141469501882576625364721654950
 . . . . . . . . [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 2024-04-09 13:16:39 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-08 13:16:38 +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:12|false] UTF8String '*.seren.app'
 . . . . . . . . [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 21827884160266040752956475780760136183265192230624972351282709199076448416186097013864317735982845851999442748298598106534147540046995548455608267181633848334228547548316869711716118380419175415363808160189965795866548278382670965199583962739022550177110443834537758579442648363454042338017670394946007895110759321331029282626954468084801111329762811786956242724178762573747904706219502807718057714580799317708746522289696848411127945136002300844678091469771090801644696930487556537094870267876380346427265757977915166316351329569793494520617228532212405236013747902760322274296729664423778246430347257165029438574653
 . . . . . . . . . . . . . . . . . . . . [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)
							a8b8c921cd532695f34673c9a84c8ba2b0b0060f
 . . . . . . . . . . . . . . . . [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 (26 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.seren.app'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'seren.app'
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0076003f174b4fd7224758941d651c84be0d12ed90377f1f856aebc1bf2885ecf8646e0000018ec337d60a0000040300473045022100dcdd7abab5f31c759c30e469df9959d13b6b25e7c1b714f908bded46d56409cb02205108c837994d35d00f7a80dc6e7bf95f5b8ecc51577401ff5ee1e866dee6d97a00750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018ec337d610000004030046304402205bbf48d9b27f368f1fc8ef0b27830aec5db859c36e9954cbeb3a496cbbb77592022074e7d855002bb788ad2684628974413a2a367f6b37c6d6d56ce641de7326f4b1
 . . . . [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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