Registered 30 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 237 ms.
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

| A | 3.167.99.8 3.167.99.114 3.167.99.55 3.167.99.122 |
|---|---|
| MX | 1 mx.poczta.onet.pl |
| NS | ns6.ringpublishing.net ns5.ringpublishing.net ns8.ringpublishing.net ns7.ringpublishing.net |
| TXT | tiktok-developers-site-verification=n1RQmq0jwhVmIFsH1TQmizu4HrjsghFL facebook-domain-verification=5g4w0j45neyxsoxyqp23mhp2a7i9hu tiktok-developers-site-verification=vBe6AC2lJx5khgomOpLopWZj6wM7GR0h v=spf1 ip4:213.180.128.0/19 ip4:141.105.16.0/27 include:amazonses.com ip4:63.180.223.202 ip4:63.185.6.105 ip4:63.183.226.216 ip4:18.196.116.253 ip4:3.78.33.11 ip4:18.157.199.3 ip4:3.66.73.198 ip4:18.184.62.46 ip4:63.183.223.43 -all MS=ms47770053 mojecertpl-site-verification-9fKJjs7dgM9XsuYtcd5DeU10cNDdikMX google-site-verification=r9Ke_qyyz-v1Dcz92qf7IGqlU3mTe-muUWnPi9Kmnyw |
| registrar | cyber_Folks S.A. |
|---|---|
| registered | 1996-06-21 |
| expires | 2026-12-31 |
| last changed | 2025-12-20 |
| nameservers | ns5.ringpublishing.net ns8.ringpublishing.net ns6.ringpublishing.net ns7.ringpublishing.net |
| valid | yes |
|---|---|
| issuer | DigiCert Inc |
| covers | *.onet.pl, onet.pl |
| protocol | TLSv1.3 |
Domain is not signed with DNSSEC
| SPF | pass v=spf1 ip4:213.180.128.0/19 ip4:141.105.16.0/27 include:amazonses.com ip4:63.180.223.202 ip4:63.185.6.105 ip4:63.183.226.216 ip4:18.196.116.253 ip4:3.78.33.11 ip4:18.157.199.3 ip4:3.66.73.198 ip4:18.184.62.46 ip4:63.183.223.43 -all |
|---|---|
| DMARC | pass policy quarantine |
| DKIM | none of 1 common selectors |
Whether mail claiming to be from this domain can be checked as genuine.
Green: clean. Red: listed. Grey: the list did not answer.
Agents get this as data. Bought through the API, the checks behind this page cost $0.070: profile $0.025 + trust $0.020 + screenshot $0.020 + site status $0.005.
MCP: add https://how.is/mcp to Claude, Codex or Cursor
(one-line install) and ask for domain_trust on onet.pl.
Reference: /llms.txt.
Watch onet.pl. DNS read at the source every 5 minutes; certificate, blocklists and expiry every 6 hours. You get an email only when something changes.
Watch — $1 / 30 days