This service provide certificate information from hostname: web2.ktknet.cz
Certificate:
Data:
Version: 3 (0x2)
Serial Number:
05:bd:4f:b9:92:b2:59:2f:3d:f1:e2:cf:99:67:76:de:a8:1f
Signature Algorithm: sha256WithRSAEncryption
Issuer: C = US, O = Let's Encrypt, CN = R11
Validity
Not Before: Jun 1 09:44:46 2025 GMT
Not After : Aug 30 09:44:45 2025 GMT
Subject: CN = ktknet.cz
Subject Public Key Info:
Public Key Algorithm: rsaEncryption
Public-Key: (2048 bit)
Modulus:
00:b3:82:03:0f:08:81:f5:4b:29:95:80:59:f0:7b:
d8:bd:9c:1c:2b:6d:23:ea:52:7c:c9:a9:6e:05:8b:
ee:41:ab:6e:9f:4e:af:5d:03:84:2b:95:e6:9a:e7:
39:d2:8e:c3:bb:61:f5:c2:6b:3a:05:15:b7:ed:99:
21:01:d1:cf:47:4b:5e:82:1b:99:6d:3f:81:5e:12:
63:29:63:65:3d:b1:4f:e8:6e:07:de:f1:7c:3b:39:
00:8d:26:85:71:3d:40:9e:98:09:83:90:9f:d0:d9:
04:b9:a4:76:1e:68:18:dd:5d:6d:48:6f:26:76:67:
70:37:8d:d4:6c:e8:d8:66:4e:68:9b:f9:44:7a:9c:
57:0d:20:0f:52:5f:39:f3:66:58:7a:bc:4a:6c:01:
48:c0:6f:a0:03:a5:40:23:e4:41:c9:dc:b4:fc:54:
e4:4c:47:78:a1:95:f2:d3:59:d2:b2:f8:8e:9c:50:
db:9d:43:e4:73:29:00:3c:5e:c2:17:88:6f:94:f2:
90:cb:80:a9:16:69:67:ee:aa:31:b8:5e:2d:48:a9:
9f:91:39:e2:86:a7:79:12:d9:65:fd:38:d6:5c:0d:
ce:c4:7b:3b:e0:bc:8f:72:dc:96:34:0b:fb:93:3c:
76:eb:04:4f:cc:2d:86:c3:0b:2e:ff:95:34:3c:36:
5a:41
Exponent: 65537 (0x10001)
X509v3 extensions:
X509v3 Key Usage: critical
Digital Signature, Key Encipherment
X509v3 Extended Key Usage:
TLS Web Server Authentication, TLS Web Client Authentication
X509v3 Basic Constraints: critical
CA:FALSE
X509v3 Subject Key Identifier:
8C:DF:F7:23:0D:B4:AD:07:8C:CE:50:E9:F5:39:97:19:03:9F:2F:D7
X509v3 Authority Key Identifier:
C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
Authority Information Access:
CA Issuers - URI:http://r11.i.lencr.org/
X509v3 Subject Alternative Name:
DNS:ktknet.cz, DNS:mailing.ktknet.cz, DNS:www.ktknet.cz
X509v3 Certificate Policies:
Policy: 2.23.140.1.2.1
X509v3 CRL Distribution Points:
Full Name:
URI:http://r11.c.lencr.org/32.crl
CT Precertificate SCTs:
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : CC:FB:0F:6A:85:71:09:65:FE:95:9B:53:CE:E9:B2:7C:
22:E9:85:5C:0D:97:8D:B6:A9:7E:54:C0:FE:4C:0D:B0
Timestamp : Jun 1 10:43:16.454 2025 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:14:F4:2D:D2:F6:8C:8A:8A:5A:8D:4A:50:
0C:D6:3B:E5:E4:D4:5F:08:16:F5:A7:C6:54:84:19:3C:
30:4E:29:82:02:20:42:48:D4:A6:D8:35:B2:D1:36:FB:
9D:AC:44:23:34:54:54:54:23:4B:AC:40:99:37:77:08:
66:C4:09:09:44:7D
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : A4:42:C5:06:49:60:61:54:8F:0F:D4:EA:9C:FB:7A:2D:
26:45:4D:87:A9:7F:2F:DF:45:59:F6:27:4F:3A:84:54
Timestamp : Jun 1 10:43:18.447 2025 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:16:EB:76:0B:9E:D7:F5:12:43:F9:B7:11:
89:EE:BE:FE:E7:8E:94:1D:38:D1:32:0D:21:DD:4A:58:
AD:11:D7:54:02:20:16:E2:DF:A1:79:D1:45:AE:9B:9A:
5A:64:85:CB:8A:89:FF:40:A7:34:9E:C5:23:60:11:34:
56:83:98:5C:63:F3
Signature Algorithm: sha256WithRSAEncryption
Signature Value:
37:e5:4b:e3:dc:66:ef:0c:90:fc:6f:26:0e:7f:87:b2:da:c0:
f4:04:56:3c:33:eb:2b:4a:a0:5e:34:d5:de:2c:8f:ef:5d:63:
a2:05:33:15:94:1a:3d:52:fd:93:86:92:0e:83:af:11:04:46:
e7:c5:e0:d0:c4:7d:5e:81:f1:d1:3d:ca:2f:ca:45:cf:29:8a:
90:4f:b1:8d:84:2c:da:8e:9c:b3:f6:e0:d1:fc:c2:cb:1f:79:
34:f4:5f:63:95:30:1f:ca:cf:0c:14:48:4f:5f:f4:26:e1:e6:
de:35:ab:77:f3:82:24:4f:d8:10:5f:6d:32:e8:1f:c1:07:1d:
f7:f6:c8:3e:2a:5e:b7:d3:1a:73:c7:16:68:8e:c8:8b:08:ac:
97:61:98:53:a3:8d:76:c5:8f:dc:26:57:1a:df:d6:d9:38:82:
d4:6c:07:e0:33:1a:77:34:ab:aa:f3:af:dd:17:3a:d0:fd:23:
7c:2f:37:0b:37:1c:88:12:d1:12:57:58:96:f9:fb:fb:d5:2d:
2a:d9:e0:58:36:6c:db:e0:db:3e:20:b8:b2:36:cd:4f:be:6d:
96:01:b8:27:5f:d6:53:86:8c:3d:be:de:ac:60:c2:da:df:57:
8d:04:ac:c2:74:4f:05:fa:bd:73:ae:90:e7:5d:6d:ed:69:c4:
3d:03:dd:64
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----