DV SSL/TLS Certificate for *.rtck.pl

Certificate is witin its validity period

Issued by Sectigo Limited (Sectigo RSA Domain Validation Secure Server CA)

About the *.rtck.pl DV SSL/TLS Certificate

This certificate with serial number 67:c2:68:55:f2:d8:b9:ff:a2:dd:b6:ca:d6:cb:c8:50 for *.rtck.pl was issued on by Sectigo Limited.

With 2 subject alternative names, this certificate can be used to secure multiple FQDNs. 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 found a BIMI record with a (Verified) Mark Certificate (VMC/MC) for rtck.pl, check the certificate details of the rtck.pl BIMI certificate. 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 *.rtck.pl 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)

Sectigo Limited

Organization: Sectigo Limited
State / Province: Greater Manchester
Locality: Salford
Country: GB

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 67:c2:68:55:f2:d8:b9:ff:a2:dd:b6:ca:d6:cb:c8:50
Serial Number (int): 137919905336552063662476902861848168528
Serial Number Length: 127 bits, 16 octets

Subject Key Identifier: e0:c9:fa:10:d0:a6:0e:b7:d2:fe:82:2d:e0:f8:45:a6:02:6c:fc:f0
Authority Key Identifier: 8d:8c:5e:c4:54:ad:8a:e1:77:e9:9b:f9:9b:05:e1:b8:01:8d:61:e1

Fingerprint (SHA-1): f8:25:5a:8f:9b:ca:20:72:2a:d7:45:cc:4e:b8:69:df:9c:13:33:88
Fingerprint (SHA-256): 1e:58:f7:af:6e:78:e2:63:5a:7e:a3:05:25:a5:3d:ab:b3:0b:f2:ca:5e:31:3c:45:06:29:3b:1a:88:a3:8f:af

Issuing Certificate URL: http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt

Revocation Information

OCSP Server: http://ocsp.sectigo.com

Check the revocation status for certificate *.rtck.pl
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for *.rtck.pl

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
CA Certificate
This is not a CA certificate

Subject Alternative Names

X.509 Certificate

The complete raw X.509 certificate details for *.rtck.pl in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIGIjCCBQqgAwIBAgIQZ8JoVfLYuf+i3bbK1svIUDANBgkqhkiG9w0BAQsFADCB
jzELMAkGA1UEBhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4G
A1UEBxMHU2FsZm9yZDEYMBYGA1UEChMPU2VjdGlnbyBMaW1pdGVkMTcwNQYDVQQD
Ey5TZWN0aWdvIFJTQSBEb21haW4gVmFsaWRhdGlvbiBTZWN1cmUgU2VydmVyIENB
MB4XDTI1MDMwMzAwMDAwMFoXDTI2MDMwMzIzNTk1OVowFDESMBAGA1UEAwwJKi5y
dGNrLnBsMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzRZAZwqNe44Y
jCRWxaobVktZ3ZnhTWxYcIVHeQnwXvvwFrcXksnYPp96iiqf1jemHki5Qw2OsGU+
o1Vcx+fFhzyowfGpFMZX4452Frw397El18H6YdHwyNfetfObuwFf3VYpdjVrACL0
QqSnEpopqV0PeN/c2wmLqiZIQfQgt3x2TyQLB3dHBYknuyF3D/a2kWcjLuj0NVMZ
h22VRy4to1/6sCynSa4bx/KxnzJ9m/u0oJKXRh8OnNrA8qpITxa58SlrSt4GUt4h
B6uSj5k2odZyASreKCzhNZFAIb1NQoYLznxRR7CyMVEYvFMg+EJ5/2uWsQD40NpQ
rO1mpSM/rwIDAQABo4IC8jCCAu4wHwYDVR0jBBgwFoAUjYxexFStiuF36Zv5mwXh
uAGNYeEwHQYDVR0OBBYEFODJ+hDQpg630v6CLeD4RaYCbPzwMA4GA1UdDwEB/wQE
AwIFoDAMBgNVHRMBAf8EAjAAMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcD
AjBJBgNVHSAEQjBAMDQGCysGAQQBsjEBAgIHMCUwIwYIKwYBBQUHAgEWF2h0dHBz
Oi8vc2VjdGlnby5jb20vQ1BTMAgGBmeBDAECATCBhAYIKwYBBQUHAQEEeDB2ME8G
CCsGAQUFBzAChkNodHRwOi8vY3J0LnNlY3RpZ28uY29tL1NlY3RpZ29SU0FEb21h
aW5WYWxpZGF0aW9uU2VjdXJlU2VydmVyQ0EuY3J0MCMGCCsGAQUFBzABhhdodHRw
Oi8vb2NzcC5zZWN0aWdvLmNvbTAdBgNVHREEFjAUggkqLnJ0Y2sucGyCB3J0Y2su
cGwwggF8BgorBgEEAdZ5AgQCBIIBbASCAWgBZgB1AJaXZL9VWJet90OHaDcIQnfp
8DrV9qTzNm5GpD8PyqnGAAABlVtqrXQAAAQDAEYwRAIgDa2CBy+2PQ9j5LJqLCOW
VuZJNjsi5MllYBvMgFLdXMsCIEbij29u4LQezV9z8uP11AlafRL9Kx+8nEYytRuR
MsMlAHUAGYbUxyiqb/66A294Kk0BkarOLXIxD67OXXBBLSVMx9QAAAGVW2qtBgAA
BAMARjBEAiA+DXzb4Mc0GPXKrLW+AchikmlVDRzFDxuEjviRLFFfWAIgOwVl1IGe
Mc+blKx2olilbl9QXsTkEL4gEWog7SOkaA0AdgDLOPcViXyEoURfW8Hd+8lu8ppZ
zUcKaQWFsMsUwxRY5wAAAZVbaq01AAAEAwBHMEUCIQC7Vq4K/cQIbj//knVtEs2+
cEihZO4X1NYNUVLS3sQ1KgIgbr0eXZG04NcDh6jWhQUGgOMvsoS8Sls7hqhon3ve
gv8wDQYJKoZIhvcNAQELBQADggEBALMP9sjs1jf7oPTdnmea39c3Nnz5AHgO+QX1
YTZH4neGs1w1qmoQx/49U8EythWMAVVaHO3BoB+jzsUItmlMnTN1kLIfSCXkSAdn
hQ/1g/bidWa1b0kP07l6HsdY3cZpeeHko3v8CVE31bJAbsC3PvMYsh+jLhzKOL8G
K/7t7O9dB/wnTMFgKsKNw6urB92BQvSnocIxwbtQW+NIJIiECYl8U+jqYIZ2Dd4C
RgHVxpGbt3ZU9JomuykTE3a9fc7iDuRTHgheY2Dq417KIGH0cL92zRfFleIzyc8X
hx5Nu9udfvc8rZYJ3MNhPZf/erKsyu4RXgqDJejU0jY8O6iof0Y=
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzRZAZwqNe44YjCRWxaob
VktZ3ZnhTWxYcIVHeQnwXvvwFrcXksnYPp96iiqf1jemHki5Qw2OsGU+o1Vcx+fF
hzyowfGpFMZX4452Frw397El18H6YdHwyNfetfObuwFf3VYpdjVrACL0QqSnEpop
qV0PeN/c2wmLqiZIQfQgt3x2TyQLB3dHBYknuyF3D/a2kWcjLuj0NVMZh22VRy4t
o1/6sCynSa4bx/KxnzJ9m/u0oJKXRh8OnNrA8qpITxa58SlrSt4GUt4hB6uSj5k2
odZyASreKCzhNZFAIb1NQoYLznxRR7CyMVEYvFMg+EJ5/2uWsQD40NpQrO1mpSM/
rwIDAQAB
-----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 137919905336552063662476902861848168528
 . . . . . . . . [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 'GB'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.8
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Greater Manchester'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.7
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Salford'
 . . . . . . . . . . . . [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 'Sectigo Limited'
 . . . . . . . . . . . . [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 'Sectigo RSA Domain Validation Secure Server CA'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-03-03 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2026-03-03 23:59:59 +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:12|false] UTF8String '*.rtck.pl'
 . . . . . . . . [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 25889825177291997586908151823426935626584054832148419357006428815844205242458274078895409842313319424244839538150192517444231576242832181327076374964501673592345013182675944698086654398593769081040744887282127339820527971881459418065500560265445937270201033003129321695526880694067694158326543018787802149966874543297543348185688256653219148323157294100853540890381829758247840641508759507317833590162604360608289939745322760499862778637660618817821206296699561542046351041705688123811045724575788773069177790606201899402113541958901326414714471923873438567846692723433173189106997035845650994813382520345782290431919
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 8d8c5ec454ad8ae177e99bf99b05e1b8018d61e1
 . . . . . . . . . . . . . . . . [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)
							e0c9fa10d0a60eb7d2fe822de0f845a6026cfcf0
 . . . . . . . . . . . . . . . . [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 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.37
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (66 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.6449.1.2.2.7
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'https://sectigo.com/CPS'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (120 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://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.sectigo.com'
 . . . . . . . . . . . . . . . . [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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.rtck.pl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'rtck.pl'
 . . . . . . . . . . . . . . . . [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 (364 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (360 bytes)
							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
 . . . . [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)
		00b30ff6c8ecd637fba0f4dd9e679adfd737367cf900780ef905f5613647e27786b35c35aa6a10c7fe3d53c132b6158c01555a1cedc1a01fa3cec508b6694c9d337590b21f4825e4480767850ff583f6e27566b56f490fd3b97a1ec758ddc66979e1e4a37bfc095137d5b2406ec0b73ef318b21fa32e1cca38bf062bfeedecef5d07fc274cc1602ac28dc3abab07dd8142f4a7a1c231c1bb505be34824888409897c53e8ea6086760dde024601d5c6919bb77654f49a26bb29131376bd7dcee20ee4531e085e6360eae35eca2061f470bf76cd17c595e233c9cf17871e4dbbdb9d7ef73cad9609dcc3613d97ff7ab2accaee115e0a8325e8d4d2363c3ba8a87f46