indexo.dev

studyhacker.net

.net crawl

First seen 2026-04-11 · Last seen 2026-04-28 · ok HTTP/1.1 200 4513 ms crawled 2026-05-19

JP · 54.168.212.224 · AS16509 Amazon.com, Inc.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
STUDY HACKER（スタディーハッカー）｜社会人の勉強法＆英語学習
Description
社会人の勉強法・働き方・英語学習情報を網羅した株式会社スタディーハッカーのオウンドメディア。勉強＆仕事の成果を「時短」で上げるノウハウを提供。
Language
ja
Canonical
https://studyhacker.net/
Feeds

Open Graph

url
https://studyhacker.net/
title
STUDY HACKER（スタディーハッカー）｜社会人の勉強法＆英語学習
site name
STUDY HACKER（スタディーハッカー）｜社会人の勉強法＆英語学習
description
社会人の勉強法・働き方・英語学習情報を網羅した株式会社スタディーハッカーのオウンドメディア。勉強＆仕事の成果を「時短」で上げるノウハウを提供。

Technology

Server
nginx
Social widgets
  • Twitter Widget
Third-party hosts loaded (8)
  • cdn-ak.f.st-hatena.com×23
  • cdn.image.st-hatena.com×20
  • cdn.blog.st-hatena.com×8
  • b.st-hatena.com×1
  • cdn.jsdelivr.net×1
  • platform.twitter.com×1
  • usercss.blog.st-hatena.com×1
  • www.hatena.ne.jp×1

Social

Contact

Address
© 2026 SHINKEISHA Inc.

Registration

Registrar
GMO Internet Group, Inc. d/b/a Onamae.com
Created
2014-01-30
Expires
2027-01-30 255 days left
Updated
2026-01-14
Name servers
  • ns-1351.awsdns-40.org
  • ns-1984.awsdns-56.co.uk
  • ns-620.awsdns-13.net
  • ns-90.awsdns-11.com

DNS records live

NS
  • ns-1351.awsdns-40.org
  • ns-1984.awsdns-56.co.uk
  • ns-620.awsdns-13.net
  • ns-90.awsdns-11.com
MX
Show 7 MX records
  • 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
  • 30 aspmx4.googlemail.com
  • 30 aspmx5.googlemail.com
TXT
  • v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCrLHiExVd55zd/IQ/J/mRwSRMAocV/hMB3jXwaHH36d9NaVynQFYV8NaWi69c1veUtRzGt7yAioXqLj7Z4TeEUoOLgrKsn8YnckGs9i3B3tVFB+Ch/4mPhXWiNfNdynHWBcPcbJ8kjEQ2U8y78dHZj1YeRXXVvWob2OaKynO8/lQIDAQAB;

Email authentication weak

SPF
v=spf1 include:spf.mandrillapp.com ?all
neutral (?all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

Amazon RSA 2048 M03
from 2025-07-15 to 2026-08-12
Expires in 84 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 80/100 Checked live page: https://studyhacker.net/

present
  • strict-transport-security
  • content-security-policy
  • content-security-policy-report-only
  • x-content-type-options
findings
  • missing frame protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-content-type-options
nosniff
content-security-policy
frame-ancestors 'self'; upgrade-insecure-requests
strict-transport-security
max-age=31536000; includeSubDomains; preload
content-security-policy-report-only
block-all-mixed-content; report-uri https://blog.hatena.ne.jp/api/csp_report

Links to (3)

Linked from (2)