Last Seen: 2026-09-16
-87718717 | 2026-09-14T07:04:24
HTTP/1.1 400 Bad Request Content-Type: text/plain; charset=utf-8 Sec-Websocket-Version: 13 X-Content-Type-Options: nosniff Date: Mon, 14 Sep 2026 07:04:24 GMT Content-Length: 12
SSL Certificate
Certificate:
Data:
Version: 3 (0x2)
Serial Number:
03:88:15:5d:87:7e:80:77:34:68:df:7e:5a:30:7d:bd:2c:72
Signature Algorithm: sha256WithRSAEncryption
Issuer: C=US, O=Let's Encrypt, CN=R3
Validity
Not Before: Nov 7 15:31:00 2023 GMT
Not After : Feb 5 15:30:59 2024 GMT
Subject: CN=zkcd.258200.xyz
Subject Public Key Info:
Public Key Algorithm: id-ecPublicKey
Public-Key: (256 bit field, 128 bit security level)
pub:
04:9b:9b:fc:ad:c6:d1:34:19:2b:97:70:8a:92:72:7e:
05:05:af:81:84:5f:c2:59:b6:6a:16:0e:4f:04:b0:14:
c1:73:9a:25:4a:55:67:6f:61:8c:38:20:62:76:d6:75:
d3:b6:16:fe:65:a8:e4:0b:1d:e3:9f:79:b5:0b:f9:75:
32
ASN1 OID: prime256v1
NIST CURVE: P-256
X509v3 extensions:
X509v3 Key Usage: critical
Digital Signature
X509v3 Extended Key Usage:
TLS Web Server Authentication, TLS Web Client Authentication
X509v3 Basic Constraints: critical
CA:FALSE
X509v3 Subject Key Identifier:
41:AB:47:C8:B8:9D:BD:6B:E6:56:61:79:62:F7:7C:93:99:AA:6B:EC
X509v3 Authority Key Identifier:
14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
Authority Information Access:
OCSP - URI:http://r3.o.lencr.org
CA Issuers - URI:http://r3.i.lencr.org/
X509v3 Subject Alternative Name:
DNS:*.zkcd.258200.xyz, DNS:zkcd.258200.xyz
X509v3 Certificate Policies:
Policy: 2.23.140.1.2.1
CT Precertificate SCTs:
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 3B:53:77:75:3E:2D:B9:80:4E:8B:30:5B:06:FE:40:3B:
67:D8:4F:C3:F4:C7:BD:00:0D:2D:72:6F:E1:FA:D4:17
Timestamp : Nov 7 16:31:00.351 2023 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:CB:28:6A:70:73:A1:C9:C0:2B:70:E0:
BA:58:D2:C1:47:CE:88:16:DC:20:99:E6:2F:52:37:A9:
61:DD:DE:54:41:02:20:31:27:7E:8A:1D:3C:1A:C9:A7:
F5:DE:40:C5:0A:1A:9A:64:52:C1:C6:A8:CF:56:49:00:
51:09:E2:CD:4C:47:BA
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : EE:CD:D0:64:D5:DB:1A:CE:C5:5C:B7:9D:B4:CD:13:A2:
32:87:46:7C:BC:EC:DE:C3:51:48:59:46:71:1F:B5:9B
Timestamp : Nov 7 16:31:00.347 2023 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:46:02:21:00:C6:63:E1:DB:F9:65:E5:AE:E7:DD:EC:
33:BE:C4:11:B0:2A:94:76:53:5D:C3:12:48:F1:5F:8A:
A3:A9:C9:E1:B7:02:21:00:92:07:23:6D:D6:90:3E:FB:
9D:9E:CE:75:AE:74:51:25:11:F7:F2:9D:12:84:64:E0:
E2:B5:35:2F:DB:9A:C5:6C
Signature Algorithm: sha256WithRSAEncryption
Signature Value:
59:a9:38:7f:33:ff:5a:12:74:b2:0a:c7:21:a8:51:28:c0:c5:6a:2a:1c:ed:54:ca:
cf:14:b8:14:d0:e9:82:0d:0a:f9:0c:ed:1c:b8:dd:5e:98:bb:3d:72:22:3b:6d:1e:
46:3b:ee:3a:3d:c2:b8:ee:e6:ec:df:e1:b9:a4:9b:9f:8f:a7:3f:81:f1:e7:33:78:
60:a7:65:3b:cc:d0:95:05:6f:b6:f4:ef:1f:6a:a9:e5:33:8b:07:bd:2e:3e:46:c8:
3e:24:60:7a:42:df:45:ef:95:61:84:19:41:db:cf:19:34:c2:c5:3a:c1:fe:4d:ed:
8d:17:82:99:22:7a:9f:09:b6:0c:d6:02:a1:db:d2:a4:ae:18:31:f3:1a:99:ff:c0:
3d:7e:02:3f:5c:0e:ec:38:7b:8b:27:75:6a:dd:4d:61:bb:ce:80:3c:67:08:61:cb:
0c:1f:94:7d:16:c1:c0:d0:72:a2:e1:3b:5f:09:36:9e:65:07:86:5f:06:f8:86:7a:
d2:1b:0d:0f:6d:7a:5f:a7:2b:48:9f:7e:c4:93:01:e1:0f:b2:31:cb:d6:9e:ab:88:
80:eb:a3:09:ad:bf:24:e7:d7:ce:4f:d1:3b:e3:1f:87:64:3e:0c:72:67:04:68:54:
ea:ef:61:a8:4e:fe:3d:60:5d:26:48:80:1c:5f:5c:78