Online Proxy Checker
Paste a list of proxies and get back real health data in seconds: alive or dead, latency, country, ISP, and whether the exit IP is datacenter, residential, or mobile. The free tier checks 50 proxies per run with no account required. Need more? The API checks up to 10,000 per call.
Proxy Checker
Paste your proxy list and get instant health diagnostics, geo info, and anonymity detection.
| Status | Proxy | Protocol | Exit IP | Country | Type | ASN | ISP | Latency | Flags |
|---|
Target URL Proxy Check NEW
Test proxies against a specific target URL. Find out which ones actually work for scraping your target, not just which ones are alive. Detects WAF blocks (Cloudflare, DataDome, Akamai, Imperva, PerimeterX) and CAPTCHAs.
| Status | Proxy | Protocol | HTTP | Latency | Block Reason |
|---|
Port Scanner
Scan any host for open ports. Checks 22 common service ports by default, or specify your own.
| Port | Status | Service | Latency |
|---|
Ping
Measure round-trip latency to any host. Returns min/avg/max and packet loss percentage.
My IP
See your public IP address, location, ISP, and whether you're detected as a proxy or datacenter.
IP Lookup
Look up geolocation, ISP, and metadata for any IP address.
Scrape Audit
Paste any URL to detect bot protection, CAPTCHA, JS rendering requirements, and get a scrapeability score.
Bot Protection
Signals
- No notable signals
Security Headers
DNS Lookup
Query A, AAAA, MX, TXT, NS, CNAME, and SOA records for any domain.
HTTP Headers
See the exact response headers a server sends. Essential for debugging scrapers and APIs.
Response Headers
SSL Certificate Checker
Inspect TLS certificates, check expiry dates, view the full certificate chain, and verify validity.
Subject Alternative Names (SANs)
Certificate Chain
Frequently asked questions
What counts as a dead proxy?
A proxy is marked dead if it fails to connect within the timeout window, refuses the connection, or the upstream target never responds. Some proxies are alive but blocked by specific sites, which is different from dead.
What does anonymity level mean?
It describes whether the proxy hides your real IP from the destination server. Elite/high-anonymity proxies show no trace of a proxy at all. Transparent proxies pass your real IP through in headers, which defeats the point of using one.
Why do free proxy lists die so fast?
Public proxy lists are scraped from open servers that get overloaded, IP-banned, or shut down within hours. A proxy that worked when a list was published can be dead an hour later, which is why checking before use matters.
Datacenter vs residential vs mobile, what's the difference?
Datacenter proxies run on hosting provider IPs and are fast but easy to detect. Residential proxies use real ISP-assigned IPs and blend in better. Mobile proxies route through carrier networks and are the hardest to block since carriers rotate IPs across many users.