Registered 26 years ago, no valid HTTPS certificate, the site did not answer (OSError).
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.
| MX | 50 citadel.verisign.net 15 pigeon.verisign.com 100 modor.verisign.net 15 eagle.verisign.com 50 kaos.verisign.net |
|---|---|
| NS | av4.nstld.com av2.nstld.com av3.nstld.com av1.nstld.com |
| registrar | Network Solutions, LLC |
|---|---|
| registered | 2000-12-05 |
| expires | 2032-12-05 |
| last changed | 2023-11-17 |
| nameservers | av1.nstld.com av2.nstld.com av3.nstld.com av4.nstld.com |
| status | server delete prohibited server transfer prohibited server update prohibited |
| valid | no |
|---|---|
| problem | Could not resolve host (ENODATA) |
Domain is not signed with DNSSEC
| SPF | none |
|---|---|
| DMARC | pass policy reject |
| 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 nstld.com.
Reference: /llms.txt.
Watch nstld.com. 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