indexo.dev

s-book.net

.net crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 3180 ms crawled 2026-05-18

JP · 210.236.234.144 · AS4725 SoftBank Corp.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
s-book.net

Technology

Server
Apache
Analytics
  • Google Tag Manager

Third-party hosts loaded (3)

  • ajax.googleapis.com×1
  • maxcdn.bootstrapcdn.com×1
  • www.googletagmanager.com×1

Registration

Registrar
Japan Registry Services Co., Ltd.
Created
2000-05-11
Expires
2028-05-11 722 days left
Updated
2026-04-08
Name servers
  • ns-1313.awsdns-36.org
  • ns-1557.awsdns-02.co.uk
  • ns-275.awsdns-34.com
  • ns-524.awsdns-01.net

DNS records live

NS
  • ns-1313.awsdns-36.org
  • ns-1557.awsdns-02.co.uk
  • ns-275.awsdns-34.com
  • ns-524.awsdns-01.net
MX
  • 10 larissa.hitotsubashi.org
  • 20 larissa2.hitotsubashi.org

Email authentication weak

SPF
v=spf1 +ip4:210.236.234.4/32 +ip4:210.236.234.5 /32 +ip4:219.101.158.11/32 ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

JPRS Domain Validation Authority - G4
from 2025-07-09 to 2026-07-31
Expires in 73 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 60/100 Checked live page: https://www.sun.s-book.net/

present
  • strict-transport-security
  • x-frame-options
findings
  • missing Content Security Policy
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
DENY
strict-transport-security
max-age=31536000; includeSubDomains

Linked from (2)