DNS
THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.2

au1.net · 202.87.24.165:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed
The certificate has expired.

Certificate verification failed

Subject
CN=au1.net
Issuer
C=US O=Let's Encrypt CN=R11
Valid from
2025-03-30T22:02:50+00:00
Expires
2025-06-28T22:02:49+00:00
Days remaining
-476
Serial (hex)
05F45BEE7D6DE4EF5F6A4E727B813CAE2AA7
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:au1.net, DNS:www.au1.net

SHA-256 fingerprint

6B:A4:81:B8:D3:9D:B8:70:13:C2:E4:A9:D3:DB:D4:58:53:F1:F0:A2:55:A2:53:02:AF:17:4B:8E:5A:B5:49:0A
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
DC:E4:84:26:1D:F3:85:02:AF:77:9A:C5:75:1D:4F:E6:36:58:30:F5
authorityKeyIdentifier
C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
authorityInfoAccess
OCSP - URI:http://r11.o.lencr.org CA Issuers - URI:http://r11.i.lencr.org/
subjectAltName
DNS:au1.net, DNS:www.au1.net
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://r11.c.lencr.org/40.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : A2:E3:0A:E4:45:EF:BD:AD:9B:7E:38:ED:47:67:77:53: D7:82:5B:84:94:D7:2B:5E:1B:2C:C4:B9:50:A4:47:E7 Timestamp : Mar 30 23:01:20.367 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:9E:63:18:F7:43:E1:2B:E3:D7:97:49: 5A:A0:F0:18:C5:68:4D:3C:D1:13:93:29:7A:57:2F:B5: 92:A5:A7:79:1A:02:20:31:E6:3A:27:AC:95:25:41:3C: 26:B8:81:FD:97:E0:6F:48:16:37:D3:1D:ED:AC:C5:91: AB:04:9A:30:8B:5B:FE Signed Certificate Timestamp: Version : v1 (0x0) Log ID : E6:D2:31:63:40:77:8C:C1:10:41:06:D7:71:B9:CE:C1: D2:40:F6:96:84:86:FB:BA:87:32:1D:FD:1E:37:8E:50 Timestamp : Mar 30 23:01:20.377 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:AB:80:1C:08:A1:F7:5D:CA:17:82:3F: A1:66:05:DA:FB:6B:36:1D:E4:38:98:4F:E3:3F:77:31: B6:EE:E4:20:B0:02:20:65:FC:CE:B8:1B:FA:51:51:D7: 19:21:BA:A6:73:C5:61:81:96:F5:52:F2:64:EF:72:99: 28:87:13:6D:AD:9B:F4
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-17T17:06:20+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=R11
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2024-03-13T00:00:00+00:00
Expires
2027-03-12T23:59:59+00:00
Days remaining
146
Serial (hex)
8A7D3E13D62F30EF2386BD29076B34F8
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

59:1E:9C:E6:C8:63:D3:A0:79:E9:FA:BE:14:78:C7:33:9A:26:B2:12:69:DD:E7:95:21:13:61:02:4A:E3:1A:44
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
authorityKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
authorityInfoAccess
CA Issuers - URI:http://x1.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/ 
-----BEGIN CERTIFICATE-----
MIIFBjCCAu6gAwIBAgIRAIp9PhPWLzDvI4a9KQdrNPgwDQYJKoZIhvcNAQELBQAw
TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh
cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMjQwMzEzMDAwMDAw
WhcNMjcwMzEyMjM1OTU5WjAzMQswCQYDVQQGEwJVUzEWMBQGA1UEChMNTGV0J3Mg
RW5jcnlwdDEMMAoGA1UEAxMDUjExMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIB
CgKCAQEAuoe8XBsAOcvKCs3UZxD5ATylTqVhyybKUvsVAbe5KPUoHu0nsyQYOWcJ
DAjs4DqwO3cOvfPlOVRBDE6uQdaZdN5R2+97/1i9qLcT9t4x1fJyyXJqC4N0lZxG
AGQUmfOx2SLZzaiSqhwmej/+71gFewiVgdtxD4774zEJuwm+UE1fj5F2PVqdnoPy
6cRms+EGZkNIGIBloDcYmpuEMpexsr3E+BUAnSeI++JjF5ZsmydnS8TbKF5pwnnw
SVzgJFDhxLyhBax7QG0AtMJBP6dYuC/FXJuluwme8f7rsIU5/agK70XEeOtlKsLP
Xzze41xNG/cLJyuqC0J3U095ah2H2QIDAQABo4H4MIH1MA4GA1UdDwEB/wQEAwIB
hjAdBgNVHSUEFjAUBggrBgEFBQcDAgYIKwYBBQUHAwEwEgYDVR0TAQH/BAgwBgEB
/wIBADAdBgNVHQ4EFgQUxc9GpOr0w8B6bJXELbBeki8m47kwHwYDVR0jBBgwFoAU
ebRZ5nu25eQBc4AIiMgaWPbpm24wMgYIKwYBBQUHAQEEJjAkMCIGCCsGAQUFBzAC
hhZodHRwOi8veDEuaS5sZW5jci5vcmcvMBMGA1UdIAQMMAowCAYGZ4EMAQIBMCcG
A1UdHwQgMB4wHKAaoBiGFmh0dHA6Ly94MS5jLmxlbmNyLm9yZy8wDQYJKoZIhvcN
AQELBQADggIBAE7iiV0KAxyQOND1H/lxXPjDj7I3iHpvsCUf7b632IYGjukJhM1y
v4Hz/MrPU0jtvfZpQtSlET41yBOykh0FX+ou1Nj4ScOt9ZmWnO8m2OG0JAtIIE38
01S0qcYhyOE2G/93ZCkXufBL713qzXnQv5C/viOykNpKqUgxdKlEC+Hi9i2DcaR1
e9KUwQUZRhy5j/PEdEglKg3l9dtD4tuTm7kZtB8v32oOjzHTYw+7KdzdZiw/sBtn
UfhBPORNuay4pJxmY/WrhSMdzFO2q3Gu3MUBcdo27goYKjL9CTF8j/Zz55yctUoV
aneCWs/ajUX+HypkBTA+c8LGDLnWO2NKq0YD/pnARkAnYGPfUDoHR9gVSp/qRx+Z
WghiDLZsMwhN1zjtSC0uBWiugF3vTNzYIEFfaPG7Ws3jDrAMMYebQ95JQ+HIBD/R
PBuHRTBpqKlyDnkSHDHYPiNX3adPoPAcgdF3H2/W0rmoswMWgTlLn1Wu0mrks7/q
pdWfS6PJ1jty80r2VKsM/Dj3YIDfbjXKdaFU5C+8bhfJGqU3taKauuz0wHVGT3eo
6FlWkWYtbt4pgdamlwVeZEW+LM7qZEJEsMNPrfC03APKmZsJgpWCDWOKZvkZcvjV
uYkQ4omYCTX5ohy+knMjdOmdH9c7SpqEWBDC86fiNex+O0XOMEZSa8DA
-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

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