curso-online.net

.net crawl

First seen 2026-04-17 · Last seen 2026-05-18 · ok HTTP/1.1 200 2856 ms crawled 2026-05-12

ES · 82.223.52.221 · AS8560 IONOS SE

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: Plataforma de Formación
Language: es

Technology

Server: Microsoft-IIS

Fonts

Google Fonts

Third-party hosts loaded (2)

fonts.googleapis.com×2
fonts.gstatic.com×1

Registration

Registrar

Arsys Internet, S.L. dba NICLINE.COM

Created

2007-11-30

Expires

2026-11-30 193 days left

Updated

2025-12-01

Name servers

dns17.servidoresdns.net
dns18.servidoresdns.net

DNS records live

NS

dns17.servidoresdns.net
dns18.servidoresdns.net

MX

10 smtpmail.curso-online.net

TXT

srj82p41nq6hlq6gpgqdzstqv3mkg7t8
phs.getpostman.com

Verified for

Microsoft
Postman

Email authentication strong

SPF: v=spf1 include:_spf.mailersend.net mx a ip4:82.223.130.197 a:smtpmail.curso-online.net a:static-147-67-26-46.ipcom.comunitel.net include:_spf.google.com include:amazonses.com include:spf.protection.outlook.com -all
strict (-all)
DMARC: v=DMARC1;p=quarantine;rua=mailto:noreply@curso-online.net
policy: quarantine
DKIM: no key found at common selectors

Certificate (current)

Sectigo Public Server Authentication CA OV R36

from 2025-07-16 to 2026-08-07

Expires in 78 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://curso-online.net/

findings

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