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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

TLSv1.3

code40.com · 185.3.129.74:443

Verified

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

Subject
CN=code40.com
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-09-03T21:54:48+00:00
Expires
2026-12-02T21:54:47+00:00
Days remaining
71
Serial (hex)
063FF4C1834E22E8B4254D860F69809A7789
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.code40.com, DNS:code40.com

SHA-256 fingerprint

22:E8:41:48:F5:2B:0E:71:E4:60:D4:AD:7A:77:2A:31:81:F2:5B:24:28:E6:4E:40:7B:41:79:D1:40:11:AA:38
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
45:31:8C:DA:73:4B:AF:48:23:F4:F3:E6:5E:8F:3D:26:0A:96:9F:E6
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:*.code40.com, DNS:code40.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/10.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E: F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7 Timestamp : Sep 3 22:53:18.370 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:1C:AB:36:92:36:38:70:EA:A2:88:45:03: 73:8F:8E:7C:22:EF:42:AD:85:6C:E1:59:45:C4:54:7B: 88:48:B9:A1:02:20:49:C8:39:8C:C2:F5:05:5A:D0:7C: 72:96:AD:A0:23:23:0C:F3:D5:A4:09:FF:2A:D3:FD:9E: BA:6F:AB:73:3A:17 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 46:AF:86:3D:3B:3E:E5:9F:A5:77:DE:A8:24:5D:36:B0: D9:ED:22:A2:23:F4:61:77:41:22:94:52:EE:95:50:5F Timestamp : Sep 3 22:53:18.552 2026 GMT Extensions: 00:00:05:00:24:4B:75:12 Signature : ecdsa-with-SHA256 30:45:02:20:3C:4E:A1:1C:38:E4:D7:F2:5E:06:DB:0C: 50:5A:2C:BC:37:69:2D:84:51:66:30:8C:4D:C4:89:32: 80:76:2B:65:02:21:00:E5:27:5B:A2:36:8A:B0:2F:19: 8D:87:94:F0:06:A4:F0:5B:68:0D:95:7E:5D:40:9C:B6: 58:1B:8A:04:26:B0:D2
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-22T18:37:27+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
711
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
2172
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

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