indexo.dev

mailform-juku.net

.net crawl

First seen 2026-05-02 · Last seen 2026-05-20 · ok HTTP/1.1 200 4050 ms crawled 2026-05-09

JP · 59.106.27.236 · AS9370 SAKURA Internet Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
メールフォーム設置塾｜WEBインベンター
Description
メールフォームCGIの設置の仕方を解説した、CGI設置のための入門塾です。この通りやれば誰でもメールフォームを設置できます。

Technology

Server
nginx

Registration

Registrar
GMO Internet Group, Inc. d/b/a Onamae.com
Created
2010-12-31
Expires
2028-12-31 955 days left
Updated
2025-12-19
Name servers
  • 01.dnsv.jp
  • 02.dnsv.jp
  • 03.dnsv.jp
  • 04.dnsv.jp

DNS records live

NS
  • 01.dnsv.jp
  • 02.dnsv.jp
  • 03.dnsv.jp
  • 04.dnsv.jp

Email authentication no MX

SPF
not published
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-04-17 to 2026-07-16
Expires in 56 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://mailform-juku.net/

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

Links to (13)

Linked from (17)