Registered 30 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 251 ms.
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

| A | 204.93.207.22 209.148.110.246 |
|---|---|
| AAAA | 2001:1838:2000:41b::80:0 |
| MX | 10 mx0.chi1.ntfo.org |
| NS | dns2.udel.edu dns1.udel.edu ns1.everett.org anyns.pch.net |
| TXT | v=spf1 a mx ip4:204.93.207.0/27 ip4:66.220.13.234 ip4:66.220.13.237 ip6:2001:470:1:205::234 ip6:2001:470:1:205::/64 ~all _globalsign-domain-verification=O60kZMoa5mBPIKKqd9FSRXcGUhU6s3rzZHzWNLAlL7 google-site-verification=ISMNEfck75SW97AiPz0acClFpICIejjA6F5ijoHccZM google-site-verification=1BTIwQr05WxuBXsED2L-cWc-cC7_8NDYKoWMsmAyR3g ntp-libera-310 |
| registrar | Tucows Domains Inc. |
|---|---|
| registered | 1997-01-18 |
| expires | 2035-01-19 |
| last changed | 2026-08-12 |
| nameservers | ns1.everett.org anyns.pch.net dns1.udel.edu dns2.udel.edu |
| status | active |
| valid | yes |
|---|---|
| issuer | Let's Encrypt |
| covers | ntp.org |
| protocol | TLSv1.2 |
Domain is not signed with DNSSEC
| SPF | pass v=spf1 a mx ip4:204.93.207.0/27 ip4:66.220.13.234 ip4:66.220.13.237 ip6:2001:470:1:205::234 ip6:2001:470:1:205::/64 ~all |
|---|---|
| DMARC | pass policy quarantine |
| DKIM | found: mail |
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 ntp.org.
Reference: /llms.txt.
Watch ntp.org. 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