yahoo.co.jp
is an active domain
Related pages
Explore similar reports and related email checks for yahoo.co.jp.
Email deliverability checks
Overview
yahoo.co.jp is currently active and operational. This domain has working DNS records and responds to HTTP/HTTPS requests. The domain is properly configured and accessible on the internet.
This report focuses on signals that affect crawlability and visibility in Google: DNS configuration, HTTP/HTTPS availability, SSL/TLS, security headers, and technical SEO checks.
How to read DNS, MX, NS
A records show where the site is hosted. Multiple A records can mean load-balancing or CDNs. MX records indicate which mail servers accept mail for the domain; missing MX often blocks inbound email. NS records list authoritative nameservers — mismatches or slow NS can cause resolution errors.
SSL/TLS interpretation
The SSL issuer and validity period show whether browsers will trust the site. Expired or self-signed certs trigger warnings. If HTTP responds but HTTPS fails, redirect traffic to HTTPS and renew certificates (Let's Encrypt or commercial CA) to avoid SEO and security penalties.
Email security (SPF/DMARC/DKIM)
SPF lists IPs/hosts allowed to send mail for the domain. DMARC enforces how receivers treat mail that fails SPF/DKIM and where to send reports. Missing or relaxed DMARC makes phishing easier. Align SPF/DKIM with your sending services and move DMARC to quarantine or reject once passes are confirmed.
HTTP status & crawlability
Stable 200/301 responses indicate healthy routing. 4xx/5xx codes block indexing and often signal outages or firewall blocks. Ensure redirects are single-hop, set canonical tags, and keep robots meta/tag rules consistent with your indexing goals.
Frequently Asked Questions
What does domain status mean?
Domain status indicates the current operational state. Active means the domain is working and accessible. Inactive means the domain is registered but not responding. Deleted means the domain appears unregistered or expired.
Why should I check domain information?
Checking domain information helps verify ownership, track expiration dates, identify security issues, and ensure proper DNS configuration. This is essential for webmasters, security teams, and domain investors.
How can I use this information?
Use this data to verify domain configuration, check SSL certificate validity, monitor email security settings, and research domain history before making decisions about domain management or investment.
Domain Information
- Flagged on
- Dec 29, 2025 (1 month ago)
- A Records
-
- 124.83.185.252
- 124.83.185.124
- 182.22.16.123
- 182.22.25.252
- 183.79.219.124
- ... and 13 more
- MX Records
-
- mx1.mail.yahoo.co.jp. (priority: 10)
- mx2.mail.yahoo.co.jp. (priority: 10)
- mx5.mail.yahoo.co.jp. (priority: 10)
- mx3.mail.yahoo.co.jp. (priority: 10)
- Nameservers
-
- ns01.yahoo.co.jp
- ns12.yahoo.co.jp
- ns02.yahoo.co.jp
- ns11.yahoo.co.jp
Google / Technical SEO
- Title
- Yahoo! JAPAN 12 chars
- Meta Description
- あなたの毎日をアップデートする情報ポータル。検索、ニュース、天気、スポーツ、メール、ショッピング、オークションなど便利なサービスを展開しています。 73 chars
- Canonical
- Present - https://www.yahoo.co.jp/
- Robots Meta
- noodp
- H1
- 28 - Yahoo! JAPAN
- Structured Data (JSON-LD)
- Missing
- Mobile Viewport
- Present
Top Recommendations
- Medium Title tag is too short (12 characters). Recommended: 30-60 characters.
- Low Meta description is too short (73 characters). Recommended: 120-160 characters.
- Medium Found 28 H1 headings. Recommended: one H1 per page.
- Low Twitter Card is missing.
- Low Structured data (JSON-LD) is missing.
Network / Hosting
- HTTP Status
- 200
- Server
- Not detected
- IP Addresses
-
124.83.185.252 124.83.185.124 182.22.16.123 182.22.25.252 183.79.219.124 183.79.219.252 124.83.184.252 182.22.28.252 +10 more
Security / SSL
- SSL Issuer
- Not available
- Valid From
- Not available
- Valid To
- Not available
HTTP Security Headers
- HTTP Version
- HTTP/1.1
- X-Frame-Options
- Not Found
- X-Content-Type-Options
- Not Found
- Strict-Transport-Security (HSTS)
- Not Found
- Content-Security-Policy (CSP)
- Not Found
- Referrer-Policy
- Not Found
- X-XSS-Protection
- Not Found
Cookies Privacy & Security
- Total Cookies
- 4
- Secure Cookies
- 4 / 4
- HttpOnly Cookies
- 2 / 4
- SameSite Cookies
- 2 / 4
- Cookie Details
-
- A Secure HttpOnly
- XA Secure HttpOnly SameSite=none
- B Secure
- XB Secure SameSite=none
Technical SEO Analysis
- Title Tag
-
12 characters
Yahoo! JAPAN
- Meta Description
-
73 characters
あなたの毎日をアップデートする情報ポータル。検索、ニュース、天気、スポーツ、メール、ショッピング、オークションなど便利なサービスを展開しています。
- H1 Headings
-
28 found
- • Yahoo! JAPAN
- • 検索
- • JavaScriptの設定について
- • お知らせ
- • 主なサービス
- • ビジネスで活用するなら
- • 社会的な取り組み
- • LINEヤフーのお知らせ
- • ニュース
- • 主要 ニュース
- • ネット選挙運動 「落とし穴」注意
- • 23区も一時雪か 夜は路面凍結注意
- • 金の価格 初めて1グラム3万円突破
- • 中3不明 警察が服装の新情報発表
- • 140信組で障害 窓口取引できず
- • グミそっくり ハンドクリーム物議
- • アニメ「メダリスト」人気の背景
- • 日テレ WBC特番を地上波放送へ
- • すくすく成長
- • おすすめの記事
- • 個人に関わる情報
- • あなたのステータス
- • 本日の天気、運行情報
- • 今日明日の天気
- • 地域情報
- • 運行情報
- • お知らせ
- • リアルタイム検索で話題のキーワード
- Canonical URL
-
Found
https://www.yahoo.co.jp/
- Viewport Meta
- Found
- Charset
- Found
- Language Attribute
- ja
- Images Alt Attributes
- 3/4 with alt
- Page Size
- 154.31 KB
Improvement Recommendations
Title tag is too short (12 characters). Recommended: 30-60 characters.
Increase the title tag length to 30-60 characters for better visibility in search engines
Meta description is too short (73 characters). Recommended: 120-160 characters.
Increase the meta description length to 120-160 characters for better display in search snippets
Found 28 H1 headings. Recommended: one H1 per page.
Keep only one main H1 heading on the page
Twitter Card is missing.
Add Twitter Card meta tags for better display in Twitter
Structured data (JSON-LD) is missing.
Add Schema.org structured data for better content understanding by search engines
1 images without alt attributes.
Add alt attributes to all images to improve accessibility and SEO
Important: The recommendations provided are general advice for improving Technical SEO and are not a call to action. Every site is unique, and some recommendations may not be suitable for your specific case. Always consult with an SEO specialist before making significant changes.
Email Security
- SPF Record
- Found
- DMARC Record
- Found
- DKIM Record
- Not Found
- MX Records
- Found
- MTA-STS
- Not Found
- TLS-RPT
- Not Found
- BIMI
- Not Found
Quick Status
Domain Status
Active
HTTP Status
200
Topical Similarity and Theme Detection
?Important Notice
This domain analysis is provided for informational purposes only. Domain information may change at any time, and we cannot guarantee the accuracy or completeness of the data presented. Always verify critical information with your domain registrar or hosting provider. This service does not provide legal advice or guarantee domain availability.