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

TLSv1.3

copyleft.no · 91.220.196.231:443

Verified

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

Subject
CN=copyleft.no
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-08-04T01:29:16+00:00
Expires
2026-11-02T01:29:15+00:00
Days remaining
37
Serial (hex)
06EEAC2076B1901C64A6662B52D60F3490E9
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:cl.no, DNS:clb.no, DNS:cli.no, DNS:clo.no, DNS:clt.no, DNS:copyleft-solutions.com, DNS:copyleft.asia, DNS:copyleft.cn, DNS:copyleft.es, DNS:copyleft.fi, DNS:copyleft.in, DNS:copyleft.is, DNS:copyleft.no, DNS:copyleft.ph, DNS:copyleft.pt, DNS:copyleft.rs, DNS:copyleft.se, DNS:copyleft.us, DNS:copyleftsolutions.com, DNS:www.cl.no, DNS:www.clb.no, DNS:www.cli.no, DNS:www.clo.no, DNS:www.clt.no, DNS:www.copyleft-solutions.com, DNS:www.copyleft.asia, DNS:www.copyleft.cn, DNS:www.copyleft.es, DNS:www.copyleft.fi, DNS:www.copyleft.in, DNS:www.copyleft.is, DNS:www.copyleft.no, DNS:www.copyleft.ph, DNS:www.copyleft.pt, DNS:www.copyleft.rs, DNS:www.copyleft.se, DNS:www.copyleft.us, DNS:www.copyleftsolutions.com

SHA-256 fingerprint

EA:84:D3:7B:9F:F8:03:C3:03:05:FA:ED:31:60:0B:B6:14:35:1F:B4:AE:20:90:F5:7C:8E:53:B6:3B:A2:0E:FC
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
BE:5F:55:56:E7:A2:20:24:0F:3C:D6:52:9D:42:41:21:AC:91:7B:E5
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:cl.no, DNS:clb.no, DNS:cli.no, DNS:clo.no, DNS:clt.no, DNS:copyleft-solutions.com, DNS:copyleft.asia, DNS:copyleft.cn, DNS:copyleft.es, DNS:copyleft.fi, DNS:copyleft.in, DNS:copyleft.is, DNS:copyleft.no, DNS:copyleft.ph, DNS:copyleft.pt, DNS:copyleft.rs, DNS:copyleft.se, DNS:copyleft.us, DNS:copyleftsolutions.com, DNS:www.cl.no, DNS:www.clb.no, DNS:www.cli.no, DNS:www.clo.no, DNS:www.clt.no, DNS:www.copyleft-solutions.com, DNS:www.copyleft.asia, DNS:www.copyleft.cn, DNS:www.copyleft.es, DNS:www.copyleft.fi, DNS:www.copyleft.in, DNS:www.copyleft.is, DNS:www.copyleft.no, DNS:www.copyleft.ph, DNS:www.copyleft.pt, DNS:www.copyleft.rs, DNS:www.copyleft.se, DNS:www.copyleft.us, DNS:www.copyleftsolutions.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/106.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Aug 4 02:27:46.270 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:3F:C6:5D:DC:FD:69:26:A3:95:E6:C5:BD: 9D:74:BF:B5:4E:21:E3:2D:D1:75:92:DD:F3:9D:8E:B9: 00:25:F3:7C:02:21:00:8B:D3:8B:31:93:36:7F:94:91: 5B:2C:09:7D:1A:3C:3C:2D:67:A8:9C:BE:93:02:7A:79: 8C:6C:23:7B:EF:9D:AD Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 26:E3:64:6E:58:69:21:23:BC:34:3F:47:24:35:9B:37: 92:CD:24:5A:88:D8:15:D3:93:33:FD:99:18:AB:47:23 Timestamp : Aug 4 02:27:45.145 2026 GMT Extensions: 00:00:05:00:30:E3:3C:80 Signature : ecdsa-with-SHA256 30:44:02:20:5E:EF:78:25:BE:BA:66:E5:DF:6F:41:52: E5:69:8B:1E:09:53:21:CF:15:49:5D:76:00:21:D3:D4: 99:C4:0E:1F:02:20:06:9F:3C:13:DB:69:11:87:FD:F6: C8:E0:6B:92:23:48:68:F2:93:BC:6D:82:1A:29:26:0C: 9B:92:B0:1B:24:BB
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-25T15:07:06+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
708
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
2169
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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