On no blocklists we checked, valid HTTPS, the site answered 200 in 496 ms.
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

| A | 213.13.145.114 |
|---|---|
| MX | 5 mx.sapo.pt |
| NS | ns2.sapo.pt dns01.sapo.pt dns02.sapo.pt ns.sapo.pt |
| TXT | f287y09s2zsj9hptkxzs5lzgrvwg8j27 mtc=ODU0ODBlNzEtODFjNC00ZWE1LTk2NmMtOTM2MGQyZDVlNmY0 google-site-verification=seX0gQu5Yl29CzyK9E5_5y6npSkuTbTDmPHF4amEz2k _globalsign-domain-verification=V7TYz76TZVst185h-018Crj3WPkm7xwIw5ZIrYXG41 v=spf1 include:_spf.sapo.pt -all |
| CAA | {'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0} {'type': 'CAA', 'issue': 'digicert.com', 'critical': 0} {'type': 'CAA', 'critical': 0, 'issuewild': 'digicert.com'} {'type': 'CAA', 'issue': 'godaddy.com', 'critical': 0} {'type': 'CAA', 'iodef': 'mailto:opers@co.sapo.pt', 'critical': 0} {'type': 'CAA', 'issue': 'amazon.com', 'critical': 0} {'type': 'CAA', 'issue': 'amazontrust.com', 'critical': 0} {'type': 'CAA', 'issue': 'amazonaws.com', 'critical': 0} {'type': 'CAA', 'issue': 'awstrust.com', 'critical': 0} {'type': 'CAA', 'issue': 'globalsign.com', 'critical': 0} {'type': 'CAA', 'critical': 0, 'issuewild': 'globalsign.com'} {'type': 'CAA', 'critical': 0, 'issuewild': 'letsencrypt.org'} {'type': 'CAA', 'issue': 'sectigo.com', 'critical': 0} |
| expires | 2027-02-11 |
|---|---|
| nameservers | ns2.sapo.pt | ipv4: 212.55.154.194 and ipv6: dns01.sapo.pt | ipv4: 213.13.28.116 and ipv6: 2001:8a0:2106:4:213:13:28:116 dns02.sapo.pt | ipv4: 213.13.30.116 and ipv6: 2001:8a0:2206:4:213:13:30:116 ns.sapo.pt | ipv4: 212.55.154.202 and ipv6: |
| status | Registered |
| valid | yes |
|---|---|
| issuer | DigiCert Inc |
| covers | *.sapo.pt, sapo.pt |
| protocol | TLSv1.3 |
Domain is not signed with DNSSEC
| SPF | pass v=spf1 include:_spf.sapo.pt -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 sapo.pt.
Reference: /llms.txt.
Watch sapo.pt. 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