mateslibres.com

.com crawl

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 517 ms crawled 2026-06-01

US · 104.21.17.112 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title

Ejercicios de Matemáticas Gratis

Description

Hojas gratuitas de ejercicios de matemáticas de multiplicación, fracciones, suma, geometría y muchos otros temas de matemáticas.

Language

Canonical

https://mateslibres.com/index.php

Translations

Technology

CDN: Cloudflare

Ads

Google AdSense

Third-party hosts loaded (3)

math-drills.com×1
mathslibres.com×1
pagead2.googlesyndication.com×1

Registration

Registrar

NameCheap, Inc.

Created

2013-02-14

Expires

2027-02-14 257 days left

Updated

2025-12-21

Name servers

paul.ns.cloudflare.com
peaches.ns.cloudflare.com

DNS records live

NS

paul.ns.cloudflare.com
peaches.ns.cloudflare.com

MX

10 _dc-mx.ba54945b389b.mateslibres.com

Verified for

Google

Email authentication strong

SPF

v=spf1 +mx +a +ip4:51.222.108.66 ~all

softfail (~all)

DMARC

v=DMARC1; p=reject; pct=100; rua=mailto:e036f6ff6f1e48f3a5714468b9e5152f@dmarc-reports.cloudflare.net; sp=reject; aspf=r;

policy: reject (enforced) · sp=reject

DKIM

default: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1bUxJptWdiHoP0TVr3NEi+yqDmJVm7Z8a0LTdWOnMfy0Df1orPBmpuCig9u1forTlsYDTHLRAgVRSW…

selectors probed

Certificate (current)

WE1

from 2026-05-10 to 2026-08-08

Expires in 68 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 80/100 Checked live page: https://mateslibres.com/

present

strict-transport-security
x-frame-options
x-content-type-options
referrer-policy
permissions-policy

findings

missing Content Security Policy

Header values

referrer-policy: strict-origin-when-cross-origin
x-frame-options: SAMEORIGIN
permissions-policy: geolocation=(), microphone=(), camera()
x-content-type-options: nosniff
strict-transport-security: max-age=31536000; includeSubDomains; preload

Linked from (2)

mathslibres.com×1
math-drills.com×1