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astro4dev.org

astro4dev.org ranks in the top 0.31% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 26 distinct hosts observed under it.

Explore astro4dev.org in the Web Graph

Connectivity

#406,718harmonic-centrality rank
Top percentile
0.31%
Hosts observed
26

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://astro4dev.org/ answered with HTTP 200.

DNS records

A
  • 129.232.159.7
AAAA
No records found.
MX
  • 30 aspmx2.googlemail.com.
  • 20 alt2.aspmx.l.google.com.
  • 30 aspmx3.googlemail.com.
  • 30 aspmx4.googlemail.com.
  • 30 aspmx5.googlemail.com.
  • 10 aspmx.l.google.com.
  • 20 alt1.aspmx.l.google.com.
NS
  • ns15.worldnic.com.
  • ns16.worldnic.com.
AS
Server in network xneelo, AS37153 · South Africa129.232.159.0/24, which holds 129.232.159.7

Live preview

This is a live, sandboxed embed of astro4dev.org — not a copy. What it shows can change any time the site itself does.

Domain registration (WHOIS / RDAP)

RDAP lookup failed (HTTP 429).

How to read WHOIS and RDAP data

SSL certificate

Certificate Transparency lookup failed (HTTP 429).

How to check when a certificate expires

HTTP & security headers

Response

Server
cloudflare
Content-Type
text/html; charset=UTF-8
Cache-Control
Not sent
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
Not sent
X-Frame-Options
Not sent
X-Content-Type-Options
Not sent
Referrer-Policy
Not sent
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://astro4dev.org/HTTP 301

    → https://astro4dev.org/

  2. 2.https://astro4dev.org/HTTP 200

Meta tags

Title
Home page - IAU Office of Astronomy for Development
Description
The Office of Astronomy for Development (OAD) aims to further the use of astronomy as a tool for sustainable development globally.
Canonical
https://astro4dev.org/
Robots
index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Generator
WordPress 6.9.10
Open Graph title
Home page - IAU Office of Astronomy for Development
Open Graph description
The Office of Astronomy for Development (OAD) aims to further the use of astronomy as a tool for sustainable development globally.
Open Graph image
https://astro4dev.org/wp-content/uploads/2021/04/04_OAD_full_2-DSI.jpg
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Not set
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
0
Disallow rules (other agents)
0

Sitemap declared:

  • https://astro4dev.org/sitemap.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • WordPresscms

    <meta name="generator"> = "WordPress 6.9.10"

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