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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

cnaaa.com · 103.27.111.128:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
CN=cnaaa.com
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-10-11T03:51:44+00:00
Expires
2027-01-09T03:51:43+00:00
Days remaining
78
Serial (hex)
059AAC11A5A87D94E28BBD31A385F59B06A3
Signature
RSA-SHA256
Public key
RSA 3072

Subject alternative names (SAN)

DNS:cnaaa.com, DNS:www.cnaaa.com, DNS:www.iis3.com

SHA-256 fingerprint

0E:0D:7D:8E:A9:ED:29:1D:30:53:6B:ED:F1:3C:E8:27:2A:84:31:6D:A2:55:5D:21:FF:C3:C5:AF:21:2F:18:CF
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
F1:46:88:C3:BF:60:90:E4:94:14:FE:7E:D8:DC:3F:FC:0A:04:B9:84
authorityKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityInfoAccess
CA Issuers - URI:http://yr1.i.lencr.org/
subjectAltName
DNS:cnaaa.com, DNS:www.cnaaa.com, DNS:www.iis3.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/36.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D6:D5:8D:A9:D0:17:53:F3:6A:4A:A0:C7:57:49:02:AF: EB:C7:DC:2C:D3:8C:D9:F7:64:C8:0C:89:19:1E:9F:02 Timestamp : Oct 11 04:50:15.028 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:D7:FC:C7:50:5F:F2:30:56:9F:94:51: 83:C2:98:AA:E5:85:73:5F:9C:B1:40:81:CA:CC:CB:EB: 03:E7:62:9B:BA:02:21:00:8D:C2:74:E2:3E:D9:3D:8D: 0A:E0:1F:8D:55:95:0E:DC:94:45:45:13:D9:C4:9D:81: 82:B2:B6:F3:6D:2D:6D:F6 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1A:8B:9D:6B:8D:D7:91:D1:CD:05:49:ED:B6:03:55:D6: 06:B6:4F:AD:30:DB:71:FE:78:8F:0F:C7:C8:FB:C4:B1 Timestamp : Oct 11 04:50:16.579 2026 GMT Extensions: 00:00:05:00:07:44:2C:76 Signature : ecdsa-with-SHA256 30:46:02:21:00:F5:37:74:A9:FC:D0:1D:8E:2B:FF:D6: FB:7E:69:A4:33:CF:4E:4E:D6:D0:85:8C:E2:22:43:68: DD:4B:A3:0E:4D:02:21:00:E0:AF:EC:8A:25:49:23:70: FD:0E:CC:03:80:17:8B:AE:16:E3:B3:5E:B4:0B:4E:7F: 62:98:48:FF:B6:F9:2D:75
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-SHA384 · Checked 2026-10-22T23:11:44+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR1
Issuer
C=US O=ISRG CN=Root YR
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
681
Serial (hex)
A20253F15F2691C05DC1CE13B9BCCA4E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:94:96:34:D9:9C:D6:FD:6A:A8:0B:C0:34:FE:FA:CC:EB:19:69:FE:EF:98:65:86:71:3E:CD:BB:05:75:8D:3F
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityInfoAccess
CA Issuers - URI:http://yr.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=ISRG CN=Root YR
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2026-05-13T00:00:00+00:00
Expires
2032-09-02T23:59:59+00:00
Days remaining
2142
Serial (hex)
F24B6D17F9D9AD7CB1C9FEA78782699F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

07:26:39:D0:B1:40:D5:BF:FA:E1:6A:D9:C3:F6:CC:60:86:04:06:21:F5:1E:E6:1A:6D:46:A8:91:5C:07:CF:76
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
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-----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-----END CERTIFICATE-----

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

View certificate JSON

Registration / WHOIS →DNS records →