Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DURL VariantsActionwww/non-www, trailing slash, HTTP→HTTPSFIX
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
HTTP version does not redirect to HTTPS
BRedirect Chain2 redirect(s), 266 ms totalREVIEW
https://fda.gov
17 ms · HTTP/1.1
https://fda.gov/apology_objects/abuse-de...
14 ms · HTTP/1.1
https://www.fda.gov/apology_objects/abus...
234 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://fda.gov | 302 | 17 ms | HTTP/1.1 | AkamaiGHost |
| 2 | https://fda.gov/apology_objects/abuse-de... | 301 | 14 ms | HTTP/1.1 | AkamaiGHost |
| 3 | https://www.fda.gov/apology_objects/abus... | 404 | 234 ms | HTTP/1.1 | AkamaiNetStorage |
See the visual redirect chain in the HTTP Probe tab →
Each redirect adds latency. Try to minimize the chain to 1 hop.
Redirect chain — each hop adds latency; combine into one redirect where possible.
Source: Google Search Central / web.dev
If permanent, use 301 instead.
302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.
Learn more ▾ ▴
Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).
Source: Google Search Central
BCrawlabilityno robots.txt, no sitemapREVIEW
robots.txt is optional but recommended. It tells search engine crawlers which pages to index.
No robots.txt — crawlers fetch /robots.txt and get 404; not breaking but means default crawl behavior with no directives or sitemap reference.
Learn more ▾ ▴
A minimal robots.txt with `User-agent: * / Allow: / / Sitemap: https://example.com/sitemap.xml` covers the basics. Without it, crawlers behave fine but lose the sitemap signal and can't be selectively blocked from crawl-traps.
Source: robotstxt.org
A sitemap helps search engines discover and index your pages more efficiently.
No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.
Learn more ▾ ▴
A sitemap accelerates Google's discovery of new and updated content. Most CMSes auto-generate one; static-site frameworks need a build-step plugin. Reference it from robots.txt and submit in Search Console to confirm Google can fetch it.
Source: sitemaps.org / Google Search Central
No robots.txt found
This is fine for most sites — a missing robots.txt allows all crawling by default.
No sitemap found
Adding a sitemap helps search engines discover your pages.
BTLS Certificate Expiry & Recommendations330 days until leaf cert expires — 2 issues to addressREVIEW
Certificate validity
Recommended actions
- Submit your domain to hstspreload.org to be added to the Chrome preload list
- Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
BCDN & DeliveryAkamaiREVIEW
A+DNS Records2 A records, 10 ms lookupPASS
| A | 2.16.6.139, 2.16.6.143 |
| AAAA | 2a02:26f0:6100::6861:eba |
| CNAME | — |
| NS | a2-65.akam.net, a7-67.akam.net, a1-242.akam.net, a13-64.akam.net, a20-65.akam.net, a24-66.akam.net |
| MX | 10 smtp9.fda.gov 10 smtp8.fda.gov 10 smtp7.fda.gov 10 smtp6.fda.gov |
| TXT | MS=ms48783525 SPF v=spf1 include:_spf.fda.gov -all ZOOM_verify_vTEkbQm_QTOaBDWdXKwrAw FMICzGkJO5j02YNdmENBs5kgzkmhZC/fMYTvO5fowMXe jamf-site-verification=PGVYWecttOGQ2AWnehEHWQ amazonses:jdV8OLJfTXw9mxS1imtjFUwKFRGSek+dBX1mXWxE2Es= openai-domain-verification=dv-AxQqxffHhvOZOt4t4C17dZSm identrust_validate=4JTBEWb4UcAjNl/lyEYdU+hWXoNWrn9TdDN8Z3OvGSBG identrust_validate=S0MNbkM5L+oiB5jyFKX0Hu8G0oony8eebRYByXxdxA9o identrust_validate=c7KW+Ztf7fiYpL/1dimy5BACS/7wAWQAM+0vrb32x8qs identrust_validate=o4/9QHV5pc4hVjOw4+Ebgwt4DdfKspg017PqghCYCY01 identrust_validate=zXXOEi6CQ2E8NN+fqgQ0q+KVdRi7KOa6XTwefj9zhOe6 smartsheet-gov-site-validation=HsHsNQ2BWzqEo3REvnA4aHm-csXa-eHu webexdomainverification.11G31=8411e648-086b-4727-aca0-c784ecb9827e RkQjM5mARE3LHFCQ454owCcYmNyZVV3lM3ziXSPPWtCW2/xeFfwDOYtSzHx1bO5BxQTV9hcMjMr/00cL... dZbV+0DRySs9wEKyoyX85nwTMJN6TX7SJ4Imh+uTXak5Ps5JnMhZFfKFe8efScPW04tj7oErmE4HUwRk... cisco-ci-domain-verification=74f9a92409e8b5db0b46652e631823388bcc0461ced801a6b1a... |
| CAA | Lookup not available with standard resolver |
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.
A+IPv6 ReadinessIPv6 reachable (2 ms)PASS
A+Domain Intelligencefda.gov — via get.gov, 26 years, 1 months oldPASS
34 days
August 16, 2026
330 days
Issued by IdenTrust
26 years, 1 months
Registered July 26, 2000
Enabled
Protects against DNS spoofing
Unknown
2a02:26f0:6100::6861:eba
get.gov
Expiry timeline
Recommended actions
- Renew the domain or enable auto-renewal to prevent accidental expiry
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.
Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.
Learn more ▾ ▴
Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.
Source: ICANN / domain-security best practice