Website readiness profile · Snapshot 23 October 2026
zoominfo.com
zoominfo.com's public homepage, certificate and DNS checked against 31 practices and compared with 233 Data & Analytics sites.
- Readiness index
- 94/100
- Ahead of
- >99%
- Practices observed
- 28/31
- Popularity band
- Top 50K
Data & Analytics median 63
of measured Data & Analytics sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: zoominfo.com. Thin bar: Data & Analytics peer median.
Enable
100/100
Peers 78
Harden
89/100
Peers 56
Accelerate
100/100
Peers 63
Recover
0/100
Peers 8
Priority fixes for zoominfo.com
Ordered by impact and by how common each practice is among peers.
Priority 1 · Harden
security.txt published
Observed: No valid /.well-known/security.txt with a Contact field was returned.
Why it matters: Security researchers look for this file to report problems privately. Without it, reports may go to a general inbox or never arrive.
What to do: Publish /.well-known/security.txt with at least Contact and Expires fields, as RFC 9116 requires, and review it before it expires.
On Cloudflare: Cloudflare Security Center can serve a security.txt file for the zone.
5.4% of Data & Analytics peers do this. Limit: Only the standard location was requested, once, at the time of the check.
Priority 2 · Harden
DNSSEC signed
Observed: No DS record was found for zoominfo.com at its parent zone, so its DNS answers are not DNSSEC-signed.
What to do: Enable DNSSEC at your DNS provider, then add the DS record at your registrar. Plan provider moves carefully: a stale DS record can make the domain fail to resolve.
On Cloudflare: Enable DNSSEC in DNS > Settings and add the DS record at the registrar.
8.2% of Data & Analytics peers do this.
Guide: Website Uptime Readiness: Prepare Before Traffic Arrives
Priority 3 · Recover
Nameservers spread across providers
Observed: All nameservers for zoominfo.com belong to Cloudflare.
What to do: Treat this as an advanced step. Add a secondary DNS provider through zone transfers or a multi-provider setup, then test changes carefully, since both providers must stay in sync.
On Cloudflare: Cloudflare supports zone transfers for primary or secondary DNS setups on eligible plans.
7.8% of Data & Analytics peers do this.
Guide: Website Uptime Readiness: Prepare Before Traffic Arrives
What zoominfo.com already does well
Practices fewer than half of Data & Analytics peers use.
- CAA records limit who can issue certificatesCAA limits issuance to amazon.com, comodoca.com, digicert.com and others.15% of peers
- Content Security Policy presentContent-Security-Policy present.24% of peers
- Modern image formats in useWebP or AVIF images detected.31% of peers
What we saw
- Homepage checked
- https://www.zoominfo.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Let's Encrypt, 89-day validity, expiring 2027-01-19
- CDN or edge
- Cloudflare
- Platform or framework
- Next.js
- DNS operators
- Cloudflare
- HSTS
- max-age 730 days, includeSubDomains, preload
- DMARC policy
- p=reject
- Homepage HTML
- 347 KB, gzip
- Images on homepage
- 50 (svg 42, webp 18, jpg 12, png 6)
Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.
Stack and providers
Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.
All 31 checks
Select a gap for the method and fix. How each check works
Observed 28
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- Certificate lifetime of 100 days or less
- CAA records limit who can issue certificates
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- Referrer-Policy set
- HTTP/2 negotiated
- HTTP/3 advertised
- HTML compressed
- Static files cached for 30 days or more
- Modern image formats in use
- Offscreen images lazy-loaded
- No render-blocking scripts in <head>
- robots.txt published
- XML sitemap discoverable
- Reachable over IPv6
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Structured data present
- Social preview image set
- Page language declared
- At most one redirect to the homepage
Own zoominfo.com?
Re-run the checks after a change, or verify the site in a free workspace to save reports with history, compare against similar sites and competitors, and track a private action plan. What owners get.
Live status for this site: Status Is Down: zoominfo.com. This profile covers configuration only.