indexo.dev

fftw.org

.org crawl

First seen 2026-04-23 · Last seen 2026-05-17 · ok HTTP/1.1 200 11067 ms crawled 2026-05-17

US · 216.137.187.110 · AS55293 A2 Hosting, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
FFTW Home Page
Description
A fast, free C FFT library; includes real-complex, multidimensional, and parallel transforms. Benchmarked against many other FFTs.

Technology

Server
nginx

Social

Contact

Email

Registration

Registrar
Domain Registration Services, Inc. dba dotEarth.com
Created
1999-06-07
Expires
2029-06-07 1114 days left
Updated
2019-12-18
Name servers
  • ns2.afraid.org
  • ns.fftw.org
  • puck.nether.net

DNS records live

NS
  • ns.fftw.org
  • ns2.afraid.org
  • puck.nether.net
MX
  • 10 fftw.org

Email authentication strong

SPF
v=spf1 ip4:216.137.187.110 -all
strict (-all)
DMARC
v=DMARC1; p=reject; sp=reject; rua=mailto:dmarc-reports@fftw.org
policy: reject (enforced) · sp=reject
DKIM
  • default: v=DKIM1; h=sha256; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArxCOJFrniyCNRl59wPpncKqWx3kKoz0vKNlx7T513vLlOR27zzyJFTG4HRDHEGfXlpS2…
selectors probed

Certificate (current)

R12
from 2026-04-19 to 2026-07-18
Expires in 60 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://fftw.org/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (8)

Linked from (1)