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

fribourgip.com · 45.45.217.28:443

Verified

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

Subject
CN=fribourgip.com
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-08-29T06:32:37+00:00
Expires
2026-11-27T06:32:36+00:00
Days remaining
65
Serial (hex)
055E3260ADD1030417971BB5C648B869DFE4
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:fribourgip.com, DNS:mail.fribourgip.com, DNS:webmail.fribourgip.com, DNS:www.fribourgip.com

SHA-256 fingerprint

75:F4:5E:E7:02:83:4F:AE:4B:27:EE:0D:43:4C:74:A9:5D:FF:B5:80:2D:36:88:D0:9D:01:C1:39:B6:06:AF:2F
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
8B:BE:2D:27:4E:E9:6E:93:16:B1:9F:26:B5:60:28:11:45:19:A5:55
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:fribourgip.com, DNS:mail.fribourgip.com, DNS:webmail.fribourgip.com, DNS:www.fribourgip.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/101.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C8:A3:C4:7F:C7:B3:AD:B9:35:6B:01:3F:6A:7A:12:6D: E3:3A:4E:43:A5:C6:46:F9:97:AD:39:75:99:1D:CF:9A Timestamp : Aug 29 07:31:07.766 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:9E:E3:F5:40:DB:99:41:E6:57:E4:2B: 47:83:B6:71:23:E1:71:49:4F:B8:41:CC:0E:72:76:E1: 6D:9B:1A:7A:B2:02:20:49:81:0D:A6:8A:57:42:E1:52: 56:E4:F1:53:B9:1C:EB:0B:12:A4:3F:11:E8:21:DE:03: 17:55:50:C4:41:AC:6E 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 : Aug 29 07:31:08.372 2026 GMT Extensions: 00:00:05:00:39:F6:EE:01 Signature : ecdsa-with-SHA256 30:45:02:20:09:53:7B:5C:5A:90:17:90:50:4E:C5:57: A3:C3:95:1E:03:D2:01:9C:EF:95:74:38:A1:9D:71:F0: B4:33:81:F5:02:21:00:FB:44:D2:E9:70:58:75:DF:35: 26:9F:C9:30:CE:5B:FB:0F:FF:B4:F3:BF:FD:6B:23:0C: AD:CC:47:DB:2C:25:1B
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-23T01:55:14+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
710
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
2171
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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