DNS Lookup Tool
Query any domain's DNS records directly, A/AAAA for IP addresses, MX for mail servers, TXT for verification and SPF/DKIM records, NS for authoritative nameservers, and CNAME for aliases. Useful for debugging email deliverability, verifying a domain migration propagated, or checking what a domain actually points to before trusting it.
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
Why are my DNS changes not showing up yet?
DNS changes propagate based on TTL (time to live) values set on the record, which can range from minutes to 48 hours. Different resolvers around the world also cache independently, so you may see the new record before someone else does.
What's the difference between A and AAAA records?
A records map a domain to an IPv4 address. AAAA records map it to an IPv6 address. A domain can have both, and modern clients prefer IPv6 when it's available.
Why do I need to check TXT records?
TXT records commonly hold SPF, DKIM, and domain verification strings for services like Google Workspace or email providers. Missing or malformed TXT records are a frequent cause of emails landing in spam.
What does an NS record tell me?
NS records list which nameservers are authoritative for a domain, meaning which DNS provider actually controls its records. This is the first thing to check when a domain's DNS changes aren't taking effect anywhere.