century21mexico.com

.com crawl

First seen 2026-05-02 · Last seen 2026-05-20 · ok HTTP/1.1 200 1420 ms crawled 2026-05-08

US · 52.27.252.93 · AS16509 Amazon.com, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Language: es-MX
Canonical: https://century21mexico.com/

Technology

Server: nginx

Analytics

Google Tag Manager

Third-party hosts loaded (1)

www.googletagmanager.com×2

Social

Registration

Registrar

Network Solutions, LLC

Created

1997-01-17

Expires

2033-01-18 2434 days left

Updated

2023-01-19

Name servers

ns53.worldnic.com
ns54.worldnic.com

DNS records live

NS

ns53.worldnic.com
ns54.worldnic.com

MX

10 aspmx.l.google.com
20 alt1.aspmx.l.google.com
20 alt2.aspmx.l.google.com
30 aspmx2.googlemail.com
30 aspmx3.googlemail.com

TXT

logmein-verification-code=626c126f-17c3-4598-bc92-d73f48085aca
5t0y0iVP/HIAX6vniU2uAf3GiJrMfEEbac9zrJLUlmc=

Verified for

Google
Zoom

Email authentication weak

SPF

v=spf1 mx a include:servers.mcsv.net include:_spf.google.com ip4:148.244.119.210  include:amazonses.com ip4:52.32.228.196 ip4:35.166.217.237 ?all

neutral (?all)

DMARC

not published

DKIM

google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqp128IR2BofdFXyHjl6K7/2H73h/l1fw+YWDgSPYF+FfmD/fxIuHk87eBz2SU25cyQgjMV+A+/56VE…

selectors probed

Certificate (current)

R12

from 2026-05-06 to 2026-08-04

Expires in 75 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://century21mexico.com/

findings

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