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

mail.nikitins.io · 84.54.4.19:443

Verified

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

Subject
CN=mail.nikitins.io
Issuer
C=BE O=GlobalSign nv-sa CN=GlobalSign GCC R3 DV TLS CA 2020
Valid from
2025-11-05T16:40:51+00:00
Expires
2026-12-07T16:40:50+00:00
Days remaining
39
Serial (hex)
5784E564EF92C6AA5F450308
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:mail.nikitins.io, DNS:www.mail.nikitins.io

SHA-256 fingerprint

3B:0C:10:43:E0:5F:60:64:1A:77:49:CE:A5:25:7A:10:25:03:4A:4A:49:C2:31:BF:54:2F:9E:D7:57:B8:BA:62
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
authorityInfoAccess
CA Issuers - URI:http://secure.globalsign.com/cacert/gsgccr3dvtlsca2020.crt OCSP - URI:http://ocsp.globalsign.com/gsgccr3dvtlsca2020
certificatePolicies
Policy: 1.3.6.1.4.1.4146.1.10 CPS: https://www.globalsign.com/repository/ Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/gsgccr3dvtlsca2020.crl
subjectAltName
DNS:mail.nikitins.io, DNS:www.mail.nikitins.io
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityKeyIdentifier
0D:98:C0:73:7F:AB:BD:BD:D9:47:4B:49:AD:0A:4A:0C:AC:3E:C7:7C
subjectKeyIdentifier
F1:8D:CF:A6:5B:6D:AA:6D:FD:A4:79:BC:96:6D:AA:43:18:FD:10:18
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 : Nov 5 16:41:00.294 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:3F:A7:61:6F:9A:42:D8:32:75:86:CA:D4: 3E:67:FA:D8:64:E8:F6:58:8A:1E:88:16:E7:50:C7:2E: 05:AD:92:BC:02:20:4A:E9:9D:B7:D9:33:0B:30:F3:75: 3B:CA:21:29:E4:32:54:FE:AB:E9:1F:D7:6E:59:5D:5F: ED:CC:F7:ED:85:0C Signed Certificate Timestamp: Version : v1 (0x0) Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E: F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7 Timestamp : Nov 5 16:41:00.305 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:CD:9B:4B:93:A8:CA:71:27:F1:4F:AA: 6A:68:C8:57:F9:A0:B5:59:91:76:9F:B3:4B:42:AB:37: CD:4F:9A:E8:DF:02:20:07:BD:58:8D:1A:B2:9D:6C:A2: 3D:12:52:20:34:1D:13:74:37:83:AB:FD:54:53:FA:90: D3:A2:95:25:3C:D4:DF Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Nov 5 16:41:00.241 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:70:A1:41:06:FE:42:5A:30:33:10:5A:8E: 05:D7:08:84:4F:47:27:A3:C3:30:65:C0:B7:2A:C1:F8: D3:4C:10:60:02:21:00:C1:B8:F3:BE:A3:D5:74:E3:FB: 78:D7:5D:96:16:31:A1:2A:9C:21:14:E9:1F:20:20:C5: F0:D8:4A:24:78:70:55
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-29T13:53:40+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=BE O=GlobalSign nv-sa CN=GlobalSign GCC R3 DV TLS CA 2020
Issuer
OU=GlobalSign Root CA - R3 O=GlobalSign CN=GlobalSign
Valid from
2020-07-28T00:00:00+00:00
Expires
2029-03-18T00:00:00+00:00
Days remaining
870
Serial (hex)
77BD0E0742D5D9E9D049D774D02A6F9A
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

76:25:38:43:95:09:C4:11:C4:37:D3:C5:67:56:3E:13:78:67:12:81:FC:4A:14:64:AD:D0:31:87:08:43:67:6E
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
0D:98:C0:73:7F:AB:BD:BD:D9:47:4B:49:AD:0A:4A:0C:AC:3E:C7:7C
authorityKeyIdentifier
8F:F0:4B:7F:A8:2E:45:24:AE:4D:50:FA:63:9A:8B:DE:E2:DD:1B:BC
authorityInfoAccess
OCSP - URI:http://ocsp2.globalsign.com/rootr3 CA Issuers - URI:http://secure.globalsign.com/cacert/root-r3.crt
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/root-r3.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.globalsign.com/repository/
-----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

Registration / WHOIS →DNS records →