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Domain report

ntppool.org

ntppool.org ranks in the top 0.32% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 39 distinct hosts observed under it.

Explore ntppool.org in the Web Graph

Connectivity

#430,145harmonic-centrality rank
Top percentile
0.32%
Hosts observed
39

From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means

HTTPS reachability

200HTTP status

https://ntppool.org/ answered with HTTP 200.

DNS records

A
  • 151.101.129.55
  • 151.101.193.55
  • 151.101.1.55
  • 151.101.65.55
AAAA
  • 2a04:4e42:200::311
  • 2a04:4e42:600::311
  • 2a04:4e42::311
  • 2a04:4e42:400::311
MX
  • 10 in1-smtp.messagingengine.com.
  • 20 in2-smtp.messagingengine.com.
NS
  • anyns.pch.net.
  • ns1.eu.bitnames.com.
  • ns2.us.bitnames.com.
  • ns1.us.bitnames.com.
  • ns3.us.bitnames.com.

Live preview

Screenshot of ntppool.org

This site sends "X-Frame-Options: deny", which blocks embedding it here.

Since ntppool.org can't be embedded live, this is a captured screenshot instead — a snapshot from whenever it was last rendered, not necessarily this exact moment.

Domain registration (WHOIS / RDAP)

RDAP lookup failed (HTTP 429).

How to read WHOIS and RDAP data

SSL certificate

Certificate Transparency lookup failed (HTTP 502).

How to check when a certificate expires

HTTP & security headers

Response

Server
cloudflare
Content-Type
text/html; charset=utf-8
Cache-Control
s-maxage=1800,max-age=3600
Content-Encoding
Not sent

Security

Content-Security-Policy
default-src 'none'; frame-ancestors 'none'; connect-src 'self' www.ntppool.org st.ntppool.org status.ntppool.org 8ll7xvh0qt1p.statuspage.io send.webform.dev; font-src fonts.gstatic.com; form-action 'self' send.webform.dev checkout.stripe.com billing.stripe.com; img-src 'self' data: st.ntppool.org st.pimg.net news.ntppool.org *.mapper.ntppool.org; script-src 'self' 'unsafe-eval' 'unsafe-inline' cdn.statuspage.io st.ntppool.org st.pimg.net news.ntppool.org www.mapper.ntppool.org js.stripe.com send.webform.dev; style-src 'self' fonts.googleapis.com fonts.gstatic.com send.webform.dev st.ntppool.org st.pimg.net news.ntppool.org; report-uri https://ntppool.report-uri.com/r/t/csp/wizard
Strict-Transport-Security
max-age=63072000; includeSubDomains; preload
X-Frame-Options
deny
X-Content-Type-Options
nosniff
Referrer-Policy
origin-when-cross-origin
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://ntppool.org/HTTP 301

    → https://ntppool.org/

  2. 2.https://ntppool.org/HTTP 301

    → https://www.ntppool.org/

  3. 3.https://www.ntppool.org/HTTP 302

    → https://www.ntppool.org/en/

  4. 4.https://www.ntppool.org/en/HTTP 200

Meta tags

Title
pool.ntp.org: the internet cluster of ntp servers
Description
Not set
Canonical
Not set
Robots
Not set
Generator
Not set
Open Graph title
Not set
Open Graph description
Not set
Open Graph image
Not set
Open Graph type
Not set
Twitter card
Not set
Twitter title
Not set
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
2
Disallow rules (other agents)
1

No Sitemap declared in robots.txt.

Technology detected

Best-effort, based on a small set of well-known signals — this may be incomplete.

  • Cloudflarecdn

    Server: cloudflare

Related domains

Similar connectivity

Domains ranked just above and below it in the same snapshot.