How do I check if a website is down for everyone?

Enter the website URL into the HTTP check tool. Results from 65+ global nodes will show whether the site returns a successful response (HTTP 200) or errors from each location, confirming whether an issue is global or regional. If all nodes report failure, the site is down for everyone.

What is TTFB and why does it matter?

TTFB (Time to First Byte) is the time from when a request is sent to when the first byte of response is received. It reflects server processing time plus network latency. High TTFB from specific regions often means those nodes are bypassing your CDN and hitting the origin server directly, or that your CDN has no edge presence near that region.

Why does my website show different HTTP status codes from different countries?

Different HTTP status codes by region usually indicate geoblocking policies, WAF (Web Application Firewall) rules filtering by source IP, or CDN edge nodes returning errors in regions where your service is not correctly configured. A 403 from Asia while Europe returns 200 is a common sign of geoblocking.

Does the HTTP check follow redirects?

No — redirects are intentionally not followed. A URL returning a 301 records that 301 and stops. This lets you verify that HTTPS redirect rules are in place, confirm the redirect chain is correct, and spot redirect loops or cases where HTTP is not redirecting to HTTPS.

google.com の HTTP チェック

詳細設定

世界地図を表示

Info Ping HTTP TCP UDP MTR DNS

SQLSTATE[HY000] [1040] Too many connections (Connection: mysql, Host: 172.17.0.1, Port: 3306, Database: laravel, SQL: insert into `check_tasks` (`pubuuid`, `target`, `method`, `repeatchecks`, `delete_at`, `updated_at`, `created_at`) values (9e08977e-931d-4109-bf34-33b4064a13dc, https://google.com, http, 0, 2036-10-23 04:55:06, 2026-10-23 04:55:06, 2026-10-23 04:55:06))

ウェブサイト疎通確認

ドメインまたは IP を入力してください。

例： tarnkappe.info golem.de google.com

グローバル HTTP & ウェブサイト可用性チェック

65拠点以上のノードから GET リクエストを送信し、グローバルな稼働状況を確認します。

HTTP ステータスコードと可用性

HTTP ステータスコード（200、403、502）を報告し、ジオブロッキング、WAF 問題、キャッシュ障害を特定します。

パフォーマンス & TTFB

TTFB（最初のバイトまでの時間）を計測します。高レイテンシは CDN の未設定やバックエンドの過負荷を示します。

リダイレクトとセキュリティ

リダイレクトを追跡せず、リダイレクトチェーンや SSL/TLS を直接確認できます。