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

openfactory.net · 46.232.176.124:443

Verified

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

Subject
CN=mail.openfactory.nl
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-09-20T05:36:26+00:00
Expires
2026-12-19T05:36:25+00:00
Days remaining
87
Serial (hex)
058730045372C8293E85B1262F84A039B2A8
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.fiber10.ch, DNS:*.openfactory.fi, DNS:*.swiss24x7.support, DNS:fiber10.ch, DNS:mail.openfactory.nl, DNS:openfactory.fi, DNS:openfactory.net, DNS:openfactory.nl, DNS:swiss24x7.support, DNS:www.openfactory.net, DNS:www.openfactory.nl

SHA-256 fingerprint

D1:CD:A4:CD:99:B6:53:F5:A8:E9:D6:CB:88:24:92:2A:CD:C4:A9:C9:FF:86:DB:E8:00:F8:B5:1B:3D:BE:09:71
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
14:52:2C:18:45:45:D7:BF:3D:D2:48:D7:0F:71:1C:3A:3F:81:E3:3B
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:*.fiber10.ch, DNS:*.openfactory.fi, DNS:*.swiss24x7.support, DNS:fiber10.ch, DNS:mail.openfactory.nl, DNS:openfactory.fi, DNS:openfactory.net, DNS:openfactory.nl, DNS:swiss24x7.support, DNS:www.openfactory.net, DNS:www.openfactory.nl
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/41.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65: 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8 Timestamp : Sep 20 06:34:56.518 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:CA:11:CA:D1:2D:BA:B9:C1:5D:5D:27: 76:9C:BC:9C:F5:C8:3D:FE:34:93:55:04:71:DE:81:8A: 88:1A:FF:C8:9E:02:21:00:AF:25:FC:72:E8:84:CD:AD: 15:14:10:68:81:AD:89:5A:24:76:34:40:0B:00:02:30: D8:00:FD:83:9E:85:B9:4C Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1A:8B:9D:6B:0F:FE:BF:81:B4:79:39:C6:D2:31:0A:86: D6:D1:02:D4:F0:46:E2:18:2C:9D:E3:5F:5E:26:25:EF Timestamp : Sep 20 06:34:57.364 2026 GMT Extensions: 00:00:05:00:43:22:AC:9A Signature : ecdsa-with-SHA256 30:46:02:21:00:F7:76:84:77:AB:81:D5:DD:87:0D:63: 97:DB:17:88:43:BF:1A:59:D7:04:9D:5F:F7:85:C9:AA: 8B:BD:2D:D6:AA:02:21:00:F6:C5:35:9B:66:30:E1:5E: F1:63:B4:3E:4A:1F:41:64:5E:35:FA:4F:31:33:CC:8B: 0C:47:34:CA:B6:AD:8A:8A
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-22T13:35:22+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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