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

fiberby.dk · 94.231.103.147:443

Verified

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

Subject
CN=fiberby.dk
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-07-27T10:25:56+00:00
Expires
2026-10-25T10:25:55+00:00
Days remaining
30
Serial (hex)
05CC096E2C1516B326971CC129200A197305
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:fiberby.dk, DNS:le-ratelimit-workaround-a.fiberby.net, DNS:www.fiberby.dk

SHA-256 fingerprint

CD:9D:E7:64:B6:16:A6:91:56:87:CC:F0:02:FF:EE:51:36:18:A3:4C:E2:36:F8:96:DA:9A:0E:82:82:14:2D:5F
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
F3:C3:AE:20:A8:74:1B:96:6E:C5:1E:28:5D:26:50:FF:7F:F2:CB:97
authorityKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityInfoAccess
CA Issuers - URI:http://yr2.i.lencr.org/
subjectAltName
DNS:fiberby.dk, DNS:le-ratelimit-workaround-a.fiberby.net, DNS:www.fiberby.dk
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/6.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D8:09:55:3B:94:4F:7A:FF:C8:16:19:6F:94:4F:85:AB: B0:F8:FC:5E:87:55:26:0F:15:D1:2E:72:BB:45:4B:14 Timestamp : Jul 27 11:24:26.726 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:C2:B4:B6:CB:87:96:06:6E:1D:C2:9F: 18:FD:81:0C:CE:A9:15:B2:F8:D7:26:2B:6B:8A:03:5F: D9:C5:1E:DC:0A:02:20:0E:1C:9A:E4:A0:CD:06:AE:74: 09:75:CB:07:8E:68:90:6E:BE:97:56:3E:DD:5F:DE:26: AF:9A:C5:54:E9:2D:90 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 : Jul 27 11:24:26.844 2026 GMT Extensions: 00:00:05:00:0E:B6:24:7A Signature : ecdsa-with-SHA256 30:45:02:21:00:B8:A6:62:55:07:86:F6:CB:25:C2:72: 75:47:79:9C:66:8A:D6:84:05:82:2E:95:DC:CC:C2:45: 3B:78:6F:A4:6E:02:20:6E:48:2E:5D:F9:33:0A:C5:28: 21:1D:36:86:CC:0E:07:28:F8:A1:04:7D:D8:14:69:89: 94:AD:DD:08:B6:68:65
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-25T04:43:25+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR2
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)
4EBD24947E24D394802D84A52FD5B319
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

23:8B:85:A0:09:9C:65:B9:70:47:7D:57:24:F1:A1:D4:75:CE:50:58:CF:FE:4E:FA:87:33:89:9B:DB:86:3C:47
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
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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