indexo.dev

grantmakers.io

.io crawl

First seen 2026-04-22 · Last seen 2026-05-16 · ok HTTP/1.1 200 5769 ms crawled 2026-05-16

US · 104.21.89.47 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Grantmakers.io - Unlocking Foundation Research for Nonprofits
Description
Quickly find data on 160,000 grantmaking institutions in the US. A free, open source project.
Language
en
Canonical
https://www.grantmakers.io/

Technology

CDN
Cloudflare
Analytics
  • Cloudflare Insights

Third-party hosts loaded (2)

  • images.unsplash.com×1
  • static.cloudflareinsights.com×1

Social

DNS records live

NS
  • lewis.ns.cloudflare.com
  • tess.ns.cloudflare.com
MX
  • 1 aspmx.l.google.com
  • 10 alt3.aspmx.l.google.com
  • 10 alt4.aspmx.l.google.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
TXT
  • google-site-verification=hG90Vo6AYtAg7x19fke0zDu6PLX8DwWcacyvtlkE26w
  • google-site-verification=qBwdKzBQuD1abZi1klWMxVkGlQayuD4C7xBaDbyIYjg

Email authentication strong

SPF
v=spf1 include:_spf.google.com ~all
softfail (~all)
DMARC
v=DMARC1; p=reject; pct=100; rua=mailto:re+gwj7i6nzfwt@dmarc.postmarkapp.com; sp=none; aspf=r;
policy: reject (enforced) · sp=none
DKIM
  • google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAq8VOmmxlZKH6t0CADZVUyhNS4qucvkvcXRREAZASOf5inuI+oB3gjifjmSAY2ej9+Lh46/3eSo/XZu…
selectors probed

Certificate (current)

WE1
from 2026-04-27 to 2026-07-26
Expires in 68 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 45/100 Checked live page: https://www.grantmakers.io/

present
  • x-content-type-options
  • referrer-policy
findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing Permissions Policy
Header values
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff

Links to (6)

Linked from (1)