Bulk Proxy Checker
Built for lists, not single proxies. The free web tool checks 50 at a time, and if you paste more than that we'll check the first 50 and offer a $5 one-time unlock for the rest, no subscription required. For recurring bulk work, the API validates up to 5,000 proxies per call on Pro and 10,000 on Business, with CSV export for pipeline integration.
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 happens if I paste more than 50 proxies?
The free tier checks the first 50 and shows you real results for those, then offers a one-time $5 unlock to check the rest of your list without setting up a subscription.
Can I export results to CSV?
Yes, with a paid API key. Add format=csv to your /api/check request and get the same results as a downloadable CSV instead of JSON, ready for a spreadsheet or script.
How fast is a bulk check?
Checks run concurrently in a worker pool, not one at a time. Free tier runs 20 at once, Pro runs 50 at once, and Business runs 75 at once, so a 5,000-proxy list on Pro finishes in a fraction of the time a sequential checker would take.
Do I need to sign up to check a large list once?
No. The one-time $5 option unlocks a single full check with no account and no recurring charge, which is the fastest path if this is a one-off job.