🌐 DNS + TCP :443 latency · not ICMP ping

Domain to IP Lookup

Resolve a hostname to public IPs and optionally check TCP connect latency to :443. Private/SSRF ranges are blocked.

Domain → IP

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Honest note: Resolution and TCP connects run from our server. ICMP ping is not used (often blocked); latency is TCP connect time to port 443 only. Private IPs are refused.

Resolve domains and estimate reachability

See which public addresses a hostname resolves to, and a simple TCP :443 connect timing as a latency stand-in when ICMP is unavailable.

Frequently asked questions

Why not ICMP ping?

Many networks drop ICMP. TCP connect to :443 is a practical fallback.

Why were some IPs blocked?

We refuse private, loopback, link-local, and similar SSRF-sensitive ranges.

Is this a port scanner?

No — only :443 connect timing for latency, plus DNS resolution.