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Domain report

is-a.dev

is-a.dev ranks in the top 0.015% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 510 distinct hosts observed under it.

Explore is-a.dev in the Web Graph

Connectivity

#20,475harmonic-centrality rank
Top percentile
0.015%
Hosts observed
510

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://is-a.dev/ answered with HTTP 200.

DNS records

A
  • 185.199.108.153
  • 185.199.109.153
  • 185.199.110.153
  • 185.199.111.153
AAAA
  • 2606:50c0:8000::153
  • 2606:50c0:8001::153
  • 2606:50c0:8002::153
  • 2606:50c0:8003::153
MX
  • 34 route1.mx.cloudflare.net.
  • 36 route3.mx.cloudflare.net.
  • 62 route2.mx.cloudflare.net.
NS
  • ns1.is-a.dev.
  • ns2.is-a.dev.
  • ns3.is-a.dev.
  • ns4.is-a.dev.

Live preview

This is a live, sandboxed embed of is-a.dev — 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
max-age=600
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://is-a.dev/HTTP 200

Meta tags

Title
is-a.dev - Free subdomains for developers
Description
A service to allow developers to get free `.is-a.dev` subdomains
Canonical
Not set
Robots
Not set
Generator
Not set
Open Graph title
is-a.dev
Open Graph description
A service to allow developers to get free `.is-a.dev` subdomains
Open Graph image
https://is-a.dev/assets/logo.png
Open Graph type
website
Twitter card
summary_large_image
Twitter title
is-a.dev
Twitter image
https://is-a.dev/assets/logo.png

robots.txt

is-a.dev has no 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.