signalfoundation.org

.org crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 715 ms crawled 2026-05-18

US · 104.18.9.5 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title

Signal Foundation

Description

Protecting free expression and enabling secure global communication through open source privacy technology.

Language

Translations

zh ×3
pt ×2
af
ar
az
bg
bn
bs
ca
cs
da
de
el
en
es
et
eu
fa
fi
fil
fr
ga
gl
gu
he
hi
hr
hu
id
it
ja
ka
kk
km
kn
ko
ky
lt
lv
mk
ml
mr
ms
my
nb
nl
pa
pl
ro
ru
sk
sl
sq
sr
sv
sw
ta
te
th
tr
ug
uk
ur
vi

Open Graph

url: https://signalfoundation.org
title: Signal Foundation
site name: Signal Foundation
description: Protecting free expression and enabling secure global communication through open source privacy technology.

Technology

CDN: Cloudflare

Social

Registration

Registrar

MarkMonitor Inc.

Created

2018-02-07

Expires

2029-02-07 993 days left

Updated

2026-02-23

Name servers

jakub.ns.cloudflare.com
sloan.ns.cloudflare.com

DNS records live

NS

jakub.ns.cloudflare.com
sloan.ns.cloudflare.com

Email authentication no MX

SPF

v=spf1 -all

strict (-all)

DMARC

v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s;

policy: reject (enforced) · sp=reject

DKIM

Show 12 DKIM selectors

default: v=DKIM1; p=
google: v=DKIM1; p=
selector1: v=DKIM1; p=
selector2: v=DKIM1; p=
k1: v=DKIM1; p=
k2: v=DKIM1; p=
mail: v=DKIM1; p=
dkim: v=DKIM1; p=
s1: v=DKIM1; p=
s2: v=DKIM1; p=
mxvault: v=DKIM1; p=
smtpapi: v=DKIM1; p=

selectors probed

Certificate (current)

WE1

from 2026-04-15 to 2026-07-14

Expires in 55 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 45/100 Checked live page: https://signalfoundation.org/

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 (5)

Linked from (1)

wildcardgiving.org×4