Top Sites>Ccheck-host.cc

# AI Assistants & LLM Crawlers – full access
User-agent: ClaudeBot
Allow: /

User-agent: anthropic-ai
Allow: /

User-agent: GPTBot
Allow: /

User-agent: ChatGPT-User
Allow: /

User-agent: Google-Extended
Allow: /

User-agent: PerplexityBot
Allow: /

User-agent: YouBot
Allow: /

User-agent: Bytespider
Allow: /

User-agent: cohere-ai
Allow: /

User-agent: Meta-ExternalAgent
Allow: /

User-agent: Meta-ExternalFetcher
Allow: /

User-agent: Applebot-Extended
Allow: /

User-agent: Amazonbot
Allow: /

User-agent: Diffbot
Allow: /

User-agent: iaskspider
Allow: /

# Googlebot – report pages excluded (index bloat)
User-agent: Googlebot
Disallow: /report/
Disallow: */report/
Disallow: /*?host=*

# Everyone else
User-agent: *
Disallow: /*?host=*
Disallow: /report/
Disallow: */report/
Allow: /

# Check-Host.cc - Global Network Diagnostics

Check-Host.cc enables developers and system administrators to run remote network diagnostics from multiple global nodes. Integrate PING, MTR, DNS, HTTP, TCP, and UDP checks into your infrastructure to monitor connectivity, measure latency, and verify service availability worldwide.

## API Access & Documentation
- **Production API:** `https://api.check-host.cc`
- **Human Documentation:** `https://docs.check-host.cc/`
- **OpenAPI / Swagger Spec:** `https://docs.check-host.cc/conf/swagger.yaml` (parse this YAML for exact schema definitions)

## Core Endpoints
- `/info` — Geolocation, ISP, and ASN lookup for a given IP/host
- `/whois` — WHOIS registry lookup for ownership and registration data
- `/ping` — ICMP echo requests: latency, jitter, packet loss (Live Mode supported)
- `/tcp` — TCP 3-way handshake on a specific port (Live Mode supported)
- `/udp` — UDP packet check for connectionless service responsiveness (Live Mode supported)
- `/http` — HTTP/HTTPS check: status code, TTFB, response latency, headers (Live Mode supported)
- `/dns` — DNS record queries from global nameservers (A, AAAA, MX, TXT, SRV, etc.)
- `/mtr` — My Traceroute: hop-by-hop path analysis with latency per hop

## Live Mode (Continuous Diagnostics)
Unlike one-shot tools, Check-Host supports real-time continuous checks for **Ping, TCP, UDP, and HTTP**.
- Executes exactly **1 check per second** per node, continuously for up to 120 seconds
- Ideal for catching intermittent packet loss, firewall state-table drops, transient routing failures, or flapping HTTP endpoints
- **API:** Set `repeatchecks` (integer, max 120) in your POST payload to activate Live Mode

## How to Use the API (AI Agent Workflow)
1. POST to e.g. `https://api.check-host.cc/check/ping?host=example.com` → receive a `request_id` (UUID)
2. Poll `https://api.check-host.cc/check-result/{request_id}` until all nodes have responded
3. Parse per-node results (latency, packet loss, status codes, etc.)

## Global Node Coverage
Checks are executed from distributed nodes across Europe, North America, Asia, and other regions. Node selection can be controlled via the `node` parameter. Full node list: `https://check-host.cc/nodes/hosts`

## Authentication & Rate Limiting
- Anonymous use is supported with fair-use rate limits (IP + target based)
- High-volume usage requires an API key — pass `"apikey": "your-key"` as field in the JSON POST body (nullable, omit for public use)
- Rate limits are dynamically applied per IP and target host