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

dialtelecom.cz · 212.24.129.214:443

Verified

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

Subject
CN=dialtelecom.cz
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-08-12T18:59:42+00:00
Expires
2026-11-10T18:59:41+00:00
Days remaining
43
Serial (hex)
06074CEE6117EF4F2FE0F8CCD8C7BBE6A6B5
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.dialtelecom.cz, DNS:ca.inway.cz, DNS:dialtelecom.cz, DNS:mbox.inway.cz

SHA-256 fingerprint

EA:1B:B4:8A:D0:54:B1:89:D4:64:D8:B3:FD:B3:E5:77:2A:1F:F7:29:35:2F:24:8D:01:0D:6B:56:DC:31:C2:F2
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
ED:C9:32:F0:13:24:80:4C:73:D1:35:83:AB:A1:E1:65:F4:90:28:D8
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:*.dialtelecom.cz, DNS:ca.inway.cz, DNS:dialtelecom.cz, DNS:mbox.inway.cz
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/54.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : AF:67:88:3B:57:B0:4E:DD:8F:A6:D9:7E:F6:2E:A8:EB: 81:0A:C7:71:60:F0:24:5E:55:D6:0C:2F:E7:85:87:3A Timestamp : Aug 12 19:58:13.060 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:75:DD:38:5B:C7:8E:38:05:99:57:84:66: 76:DA:5A:33:F2:DE:D2:1F:2A:02:95:29:BD:75:B6:0D: AB:D4:67:6A:02:20:0D:6D:B9:92:84:FB:7C:F7:C4:97: 25:27:72:02:50:96:B8:B8:65:83:89:6F:86:64:FD:44: 34:0D:44:54:52:B1 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 12 19:58:11.498 2026 GMT Extensions: 00:00:05:00:34:11:0B:04 Signature : ecdsa-with-SHA256 30:45:02:20:03:5C:F9:FE:E3:C2:F4:21:58:5D:1B:BD: 86:C3:09:AC:15:AB:C8:C6:5D:AD:5F:E6:32:F0:D3:8E: 30:FA:43:DC:02:21:00:EB:21:06:98:F5:7A:F1:CC:1C: 64:EC:0E:76:20:0C:3A:7D:2C:04:7E:54:A7:0B:1B:23: A4:EA:3D:C3:30:96:EE
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-28T18:39:31+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
705
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
2166
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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