DV SSL/TLS Certificate for ferna.ndo.io

Certificate is witin its validity period

Issued by Let's Encrypt (R10)

About the ferna.ndo.io DV SSL/TLS Certificate

This certificate with serial number 05:54:34:80:8c:28:76:36:ac:c8:e1:61:40:6d:dd:26:d4:8e for ferna.ndo.io was issued on by Let's Encrypt.

This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for ferna.ndo.io provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • 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)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 05:54:34:80:8c:28:76:36:ac:c8:e1:61:40:6d:dd:26:d4:8e
Serial Number (int): 464214935792681828588280649372931222590606
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: f6:e7:b7:c1:6e:88:aa:19:d8:82:7f:aa:83:1a:74:f4:6e:11:ea:12
Authority Key Identifier: bb:bc:c3:47:a5:e4:bc:a9:c6:c3:a4:72:0c:10:8d:a2:35:e1:c8:e8

Fingerprint (SHA-1): c7:fd:a5:60:19:ee:35:c6:44:cd:0d:38:09:3d:67:03:6f:b5:09:4f
Fingerprint (SHA-256): cb:03:6d:78:1a:71:c2:00:c2:91:85:30:25:f8:b4:40:c4:7b:4b:7c:88:b3:14:74:23:92:ab:25:f1:08:10:b9

Issuing Certificate URL: http://r10.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r10.c.lencr.org/15.crl

Check the revocation status for certificate ferna.ndo.io
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for ferna.ndo.io

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
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

ferna.ndo.io

X.509 Certificate

The complete raw X.509 certificate details for ferna.ndo.io in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1mGJ8JRRh2/m0eoUSi7p
0JeiZvawthdXb16I8kNdy6aI4/HtNl6oxDd7ocAv57ntsvgR7PZKeOgwT6Yy0zQt
FTntzF7KtHEm53/4Uky27IQ65LNceuXJ+D6SB29QcRk1fSV8doeL79oUaUtF5lMR
gOF+kgfoQzFJ2Vpp+KhbvfDQvTEI+MmcdGvdmhyw9FSfaMIh/2hkxIpbRIEd5mAQ
QZFOstaUNxL23pmNOKEeSO25bQK9b5iNG/11/O5nJTcinFgPA/bEz92cZpyot3g/
TmRKEbkdKUiIHx2HGPBZpZQ3mTu5GGx+e3p7f0XsxafWe7VSgmI5uUzOnG9wYT2b
hQIDAQAB
-----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 464214935792681828588280649372931222590606
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R10'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-06-22 08:14:41 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-20 08:14:40 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'ferna.ndo.io'
 . . . . . . . . [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
 . . . . . . . . . . . . . . . . [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 27063095451072817480972449337397797093474374282562015912203403212203694362833403717439957015778233192169529966636872854564306331257951678318392632441453176241267068354010474160557390015039444008867120486467913313592771549166818978340965810137267430361521857338373511757780998303995669806841884479773566108659316514638834562151704295270987866860757967319501460257960743540029962598185825732113297378126251645886620853664433394111836299843488116965932299324035935472480943590371281149722334147965843748585634001773526682507518479515139281389396864585405059329382793723769163753410388008366827588299850762730996311628677
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							f6e7b7c16e88aa19d8827faa831a74f46e11ea12
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName bbbcc347a5e4bca9c6c3a4720c108da235e1c8e8
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r10.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (16 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ferna.ndo.io'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r10.c.lencr.org/15.crl'
 . . . . . . . . . . . . . . . . [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)
							00f0007600ed3c4bd6e806c2a4a20057dbcb24e23801df512fedc486c5700f20ddb73e3fe00000019796e9c4b10000040300473045022027f2bd6ac306aeac7b9169a087022c256f6690e55e3c0f5c446c5666b01baa52022100b297f3ed3ee7e4e7e551c2c4a429bf39ee88908beb406898440723f0200b41dc007600ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db00000019796e9c4bf0000040300473045022027184917db83a3d153fa1ff91dcde564912eeaff51e97640cbaf22b68aeffdc2022100f9cfe518bfc9b4faaecc2415e2e431c559efc78aedfa8a0ae7ffff0841f52ce7
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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