complib.org

.org crawl

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 547 ms crawled 2026-06-01

US · 172.67.147.164 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: Composition Library

Technology

CDN: Cloudflare

Analytics

Cloudflare Insights

Fonts

Google Fonts

Third-party hosts loaded (4)

fonts.googleapis.com×2
code.jquery.com×1
static.cloudflareinsights.com×1
www.google.com×1

DNS records live

NS

elliot.ns.cloudflare.com
jean.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

Verified for

Google

Email authentication strong

SPF

v=spf1 ip4:54.37.80.223 include:_spf.google.com include:_spf.mx.cloudflare.net include:complib.org -all

strict (-all)

DMARC

v=DMARC1; p=reject; rua=mailto:ef0412d728d94c2ba99d05262e7071ee@dmarc-reports.cloudflare.net,mailto:graham@complib.org; pct=100; adkim=s; aspf=s

policy: reject (enforced)

DKIM

google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAhORI/lf4gkavj4sZxWmwtCFyQaEF8xJShl2lds7AspUg7zScwMThDwD4uOYW7CmSfgCvA6r7GxEB99…
mail: v=DKIM1; k=rsa; t=y; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDEhD/MMOTOQLCOK1Ffx6iV3u6pyxGmSZHBiqUQB4IgA9mAi5lXHxbmTrnTTNwLlCqU7NxcRzK0R9f+l…

selectors probed

Certificate (current)

WE1

from 2026-04-03 to 2026-07-02

Expires in 31 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://complib.org/

present

x-frame-options

findings

missing HSTS
missing Content Security Policy
missing content type protection
missing Referrer Policy
missing Permissions Policy

Header values

x-frame-options: SAMEORIGIN