esbooks.co.jp

.jp user

First seen 2026-05-11 · Last seen 2026-05-11 · ok HTTP/1.1 200 2846 ms crawled 2026-05-11

JP · 85.131.213.23 · AS131965 Xserver Inc.

Reputation 87/100 weak security headers no dmarc policy

sector media news type homepage

HTML metadata

Title: esbooks.co.jp インターネットライフメディア Internet Life Media www.esbooks.co.jp
Description: インターネットライフメディアです。
Language: ja
Canonical: https://www.esbooks.co.jp/

Technology

Server: nginx

Fonts

Google Fonts

Third-party hosts loaded (3)

www.esbooks.co.jp×706
official555.chicappa.jp×2
fonts.googleapis.com×1

DNS records live

NS

ns1.xserver.jp
ns2.xserver.jp
ns3.xserver.jp
ns4.xserver.jp
ns5.xserver.jp

MX

0 esbooks.co.jp

Email authentication weak

SPF: v=spf1 +a:sv16642.xserver.jp +a:esbooks.co.jp +mx include:spf.sender.xserver.jp ~all
softfail (~all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-04-06 to 2026-07-05

Expires in 45 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.esbooks.co.jp/

findings

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

Links to (5)