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Domain report

coreserver.jp

coreserver.jp ranks in the top 0.013% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 781 distinct hosts observed under it.

Explore coreserver.jp in the Web Graph

Connectivity

#17,338harmonic-centrality rank
Top percentile
0.013%
Hosts observed
781

From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means

HTTPS reachability

200HTTP status

https://coreserver.jp/ answered with HTTP 200.

DNS records

A
  • 104.18.25.150
  • 104.18.24.150
AAAA
No records found.
MX
  • 10 mail.coreserver.jp.
NS
  • gabriel.ns.cloudflare.com.
  • vera.ns.cloudflare.com.

Live preview

Screenshot of coreserver.jp

This site sends "X-Frame-Options: SAMEORIGIN", which blocks embedding it here.

Since coreserver.jp can't be embedded live, this is a captured screenshot instead — a snapshot from whenever it was last rendered, not necessarily this exact moment.

Domain registration (WHOIS / RDAP)

RDAP lookup failed (HTTP 429).

How to read WHOIS and RDAP data

SSL certificate

Certificate Transparency lookup failed (HTTP 429).

How to check when a certificate expires

HTTP & security headers

Response

Server
cloudflare
Content-Type
text/html; charset=UTF-8
Cache-Control
Not sent
Content-Encoding
Not sent

Security

Content-Security-Policy
default-src 'self' 'unsafe-inline' 'unsafe-eval' data: blob: www.googletagmanager.com www.google-analytics.com cache.img.gmo.jp siteseal.gmo-cybersecurity.com gmo-cybersecurity.com seal.atlas.globalsign.com www.value-server.com www.coreserver.jp www.google.co.jp code.jquery.com connect.facebook.net www.google.com googleads.g.doubleclick.net *.doubleclick.net s.yimg.jp b99.yahoo.co.jp static.cloudflareinsights.com static.ads-twitter.com minerva-deliver.sp.gmossp-sp.jp *.clarity.ms analytics.twitter.com t.co cdnjs.cloudflare.com www.youtube.com analytics.ahrefs.com www.googleadservices.com analytics.google.com stats.g.doubleclick.net www.facebook.com bzrcdn.openai.com bzr.openai.com ;
Strict-Transport-Security
max-age=31536000
X-Frame-Options
SAMEORIGIN
X-Content-Type-Options
nosniff
Referrer-Policy
Not sent
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://coreserver.jp/HTTP 301

    → https://www.coreserver.jp/

  2. 2.https://www.coreserver.jp/HTTP 200

Meta tags

Title
WordPressが超高速の最新レンタルサーバー｜コアサーバー
Description
高速・高安定・大容量のレンタルサーバー「コアサーバー」。全プラン転送量無制限、高速SSD、無料SSL、WordPressインストール対応！さらにサポートも充実。30日間の無料お試し期間があるので、個人から法人まで安心してお使いいただけます。
Canonical
Not set
Robots
Not set
Generator
Not set
Open Graph title
WordPressが超高速の最新レンタルサーバー｜コアサーバー
Open Graph description
高速・高安定・大容量のレンタルサーバー「コアサーバー」。全プラン転送量無制限、高速SSD、無料SSL、WordPressインストール対応！さらにサポートも充実。30日間の無料お試し期間があるので、個人から法人まで安心してお使いいただけます。
Open Graph image
https://www.coreserver.jp/common/img/ogp.png
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Not set
Twitter image
Not set

robots.txt

coreserver.jp has no robots.txt.

Technology detected

Best-effort, based on a small set of well-known signals — this may be incomplete.

  • Cloudflarecdn

    Server: cloudflare

  • Google Tag Manageranalytics

    Found "googletagmanager.com/gtm.js" in the page's HTML

Related domains

Similar connectivity

Domains ranked just above and below it in the same snapshot.