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

dns.pl · 193.59.201.40:443

Verified

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

Subject
jurisdictionC=PL businessCategory=Government Entity serialNumber=0000012938 C=PL ST=Województwo Mazowieckie L=Warszawa O=Naukowa i Akademicka Sieć Komputerowa – PIB CN=dns.pl
Issuer
C=US O=DigiCert Inc CN=GeoTrust EV RSA CA G2
Valid from
2026-09-08T00:00:00+00:00
Expires
2027-03-04T23:59:59+00:00
Days remaining
163
Serial (hex)
041B26DB99661F58C8DD37194A16EF74
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:dns.pl, DNS:www.dns.pl

SHA-256 fingerprint

19:64:89:3C:18:4A:46:B3:46:98:FA:89:B8:E2:D8:96:22:00:66:FD:AA:8F:B7:58:C9:C7:62:82:C2:70:39:31
Certificate extensions & PEM
authorityKeyIdentifier
28:D2:CF:EE:09:84:75:DD:B5:B2:B5:BF:3C:D5:A0:C6:73:88:5D:1F
subjectKeyIdentifier
2F:29:01:2A:DA:26:E6:5F:06:4F:D8:FA:21:B1:BF:BC:EF:6D:31:F9
subjectAltName
DNS:dns.pl, DNS:www.dns.pl
certificatePolicies
Policy: 2.16.840.1.114412.2.1 Policy: 2.23.140.1.1 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/GeoTrustEVRSACAG2.crl Full Name: URI:http://crl4.digicert.com/GeoTrustEVRSACAG2.crl
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/GeoTrustEVRSACAG2.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F: AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26 Timestamp : Sep 8 09:56:57.243 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:C1:A8:59:35:72:09:05:24:1F:1B:0E: 22:6A:FA:78:3F:F1:87:85:4D:AC:75:17:85:78:9F:72: 9D:46:10:0D:8C:02:21:00:A8:3B:87:69:DF:0F:73:D8: 01:B6:A8:CE:F2:28:94:3D:3B:F2:1B:BA:3D:89:C0:5B: 8D:68:70:3B:81:3E:80:55 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 44:C2:BD:0C:E9:14:0E:64:A5:C9:4A:01:93:0A:5A:A1: BB:35:97:0E:00:EE:11:16:89:68:2A:1C:44:D7:B5:66 Timestamp : Sep 8 09:56:57.318 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:16:06:67:DA:9C:18:A9:49:C2:43:A4:BB: DF:10:50:BB:E3:C9:19:67:A7:84:FE:E3:10:07:AB:02: 5A:38:8E:95:02:21:00:B1:DF:64:40:CF:BF:1A:81:11: C2:88:28:B0:7F:B8:26:5A:50:C1:94:78:1F:64:48:D1: E6:C9:86:79:D2:2E:61 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Sep 8 09:56:57.374 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:DA:41:6B:E6:3C:DB:D2:69:1A:F6:49: A2:73:5A:B4:0B:78:91:2A:20:E4:B3:DD:04:D7:50:D1: 34:68:0E:10:14:02:20:73:66:47:F5:2A:75:6E:7F:3D: FE:53:F3:CD:C7:F4:6B:F1:BF:D5:CB:1F:BA:29:7C:F1: 12:9D:0A:06:EA:6C:01
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-22T17:54:14+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=DigiCert Inc CN=GeoTrust EV RSA CA G2
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2020-07-02T12:42:57+00:00
Expires
2030-07-02T12:42:57+00:00
Days remaining
1378
Serial (hex)
0D601262C8A7721A6EAB0361E5619580
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

2D:14:0F:20:B8:A9:6E:2B:4D:2F:1C:C5:AC:A5:E5:A1:E7:DC:56:A7:49:1E:51:09:06:96:0F:38:D2:D2:1A:EF
Certificate extensions & PEM
subjectKeyIdentifier
28:D2:CF:EE:09:84:75:DD:B5:B2:B5:BF:3C:D5:A0:C6:73:88:5D:1F
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.digicert.com/CPS User Notice: Explicit Text: Any use of this Certificate constitutes acceptance of the Relying Party Agreement located at https://www.digicert.com/rpa-ua
-----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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