HOW.IS
?

How is nih.gov?

Looks fine risk 0/100

Registered 29 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 215 ms.

Why

02050100
finecarefulhigh risk
  • ·Nothing in the checks added risk.

Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

How nih.gov looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
215 ms · ends at www.nih.gov
HTTPS
112 d
left on a GoDaddy.com, Inc. certificate
Age
29 years
registered 1997-10-02
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records5 record types
A156.40.212.210
MX10 nihcesxway6.hub.nih.gov
10 nihcesxway5.hub.nih.gov
10 nihcesxway4.hub.nih.gov
10 nihcesxwayst03.hub.nih.gov
10 nihcesxwayst04.hub.nih.gov
10 nihcesxwayst05.hub.nih.gov
10 nihcesxwayst06.hub.nih.gov
10 nihcesxway3.hub.nih.gov
NSns2.nih.gov
ns.nih.gov
ns3.nih.gov
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CAA{'type': 'CAA', 'critical': 0, 'issuewild': 'sectigo.com'}
{'type': 'CAA', 'critical': 0, 'issuewild': 'godaddy.com'}
{'type': 'CAA', 'issue': 'entrust.net', 'critical': 0}
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{'type': 'CAA', 'critical': 0, 'issuewild': 'identrust.com'}
{'type': 'CAA', 'issue': 'digicert.com', 'critical': 0}
{'type': 'CAA', 'critical': 0, 'issuewild': 'digicert.com'}
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Registrationget.gov
registrarget.gov
registered1997-10-02
expires2027-08-22
last changed2026-08-14
ownerDepartment of Health and Human Services
countryUnited States
nameserversns.nih.gov
ns2.nih.gov
ns3.nih.gov
statusserver transfer prohibited
registered 1997-10-02expires 2027-08-22
HTTPS certificate112 days left
validyes
issuerGoDaddy.com, Inc.
coverssalud.nih.gov, devtestdomain.nih.gov, stagetestdomain.nih.gov, stagetestdomain6.nih.gov, stagetestdomain5.nih.gov, testdomain2.nih.gov, stagetestdomain2.nih.gov, stagetestdomain7.nih.gov, www.nih.com, devtestdomain7.nih.gov, clinicalresearchtrials.nih.gov, www.nih.gov
protocolTLSv1.2
issued 2026-02-05expires 2027-02-15
DNSSECsecure

Domain is properly signed — chain validated by an independent validating resolver

. → gov → nih.gov
Email authenticationexcellent
SPFpass v=spf1 ip4:128.231.90.64/26 ip4:165.112.13.0/26 ip4:156.40.79.128/25 ip4:128.231.89.192/28 ip4:165.112.69.16/28 ip4:165.112.194.0/25 ip6:2607:f220:0404:8104::0/64 ip6:2607:f220:402:1a01::0/64 ip6:2607:f220:404:12e::/64 ip6:2607:f220:402:12e::/64 include:spf.protection.outlook.com ~all
DMARCpass policy reject
DKIMfound: selector1, selector2, k1, s1, s2

Whether mail claiming to be from this domain can be checked as genuine.

Security scoregrade B · 170/205
Basic Security
10/40missing: DNSSEC Enabled, Nameserver Diversity
Record Security
45/45missing: DKIM Presence
Advanced Security
20/25missing: IPv6 Support
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 5 lookups
SURBL MultidomainURIBL MultidomainSpamCop156.40.212.210Barracuda156.40.212.210UCEPROTECT Level 1156.40.212.210

Green: clean. Red: listed. Grey: the list did not answer.

Ask it yourself

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.

curl "https://how.is/v1/domain/trust?domain=nih.gov" \ -H "Authorization: Bearer $HOWIS_KEY" # or pay per call in USDC (x402), no key: the 402 tells your agent the price curl -i "https://how.is/v1/domain/profile?domain=nih.gov"

MCP: add https://how.is/mcp to Claude, Codex or Cursor (one-line install) and ask for domain_trust on nih.gov. Reference: /llms.txt.

Watch nih.gov. 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