Registered 30 years ago, on no blocklists we checked, valid HTTPS, the site did not answer (refused).
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.
| A | 203.22.241.9 203.22.241.10 203.22.241.8 203.22.241.11 |
|---|---|
| MX | 10 sciencedirect-com.mail.protection.outlook.com |
| NS | elmo.ns.cloudflare.com sofia.ns.cloudflare.com |
| TXT | _globalsign-domain-verification=HFLbkoXvVlFiyLnMm91Nto2Ywh56_e4VOrfGV5fAsN DEp7qMu+ohOBEn42vkt+jYjp/8PMYaqualiDOigSRdWnOQQcxQuPrQoej/VUoJ7jbXfKKo0VbFyGJoaJlcILHg== _globalsign-domain-verification=y-pxBHDcjJk617gDyE7Tn_Gaxd9CiRc2tfts504Exg MS=ms66274496 f92b5d99-6557-4f2a-9a4e-41b9cce227d2 v=spf1 ip4:80.64.57.21/30 a:rsevps20.ritense.com include:spf.protection.outlook.com ~all d7807cbd-1201-468d-a943-4e505c51a6a4 |
| registrar | SafeNames Ltd. |
|---|---|
| registered | 1997-03-12 |
| expires | 2031-03-13 |
| last changed | 2025-10-14 |
| nameservers | elmo.ns.cloudflare.com sofia.ns.cloudflare.com |
| status | client delete prohibited client transfer prohibited client update prohibited |
| valid | yes |
|---|---|
| issuer | Google Trust Services |
| covers | sciencedirect.com, *.sciencedirect.com, *.pendo.sciencedirect.com |
| protocol | TLSv1.3 |
Domain is not signed with DNSSEC
| SPF | pass v=spf1 ip4:80.64.57.21/30 a:rsevps20.ritense.com include:spf.protection.outlook.com ~all |
|---|---|
| DMARC | pass policy reject |
| DKIM | found: s1, s2 |
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 sciencedirect.com.
Reference: /llms.txt.
Watch sciencedirect.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