Domain IP Lookup

How to use the Domain IP Lookup (Domain to IP Address) tool

1. Type a domain such as example.com or paste a full URL and click Find IP. The scheme, port, path and query are removed for you, and a subdomain is looked up exactly as you typed it.
2. The tool asks a public resolver over DNS-over-HTTPS for the domain's A and AAAA records. Cloudflare answers first, and Google takes over if Cloudflare cannot be reached.
3. Read the summary box. It gives the number of addresses and, if the name is an alias, the CNAME chain from the name you entered to the host that holds the addresses.
4. Each row shows one address with its TTL, the organization holding the network, the network's range and its reverse DNS name. WHOIS opens the full registry record for that address.
5. Click Copy IPs to copy the whole list, one address per line, for a firewall rule or an allowlist.

How to find the IP address of a domain in code

# IPv4 and IPv6 addresses (+short also prints any CNAME targets)
dig +short example.com A
dig +short example.com AAAA

# From an address back to a name, then to the network's owner
dig +short -x 8.8.8.8
whois 8.8.8.8

import { resolve4, resolve6, reverse } from "node:dns/promises";

const domain = "example.com";

// A name with no record of that type rejects, so fall back to an empty list
const v4 = await resolve4(domain, { ttl: true }).catch(() => []);
const v6 = await resolve6(domain, { ttl: true }).catch(() => []);

for (const { address, ttl } of [...v4, ...v6]) {
    const names = await reverse(address).catch(() => []);
    console.log(address, "ttl", ttl, names);
}

import socket

infos = socket.getaddrinfo("example.com", None, proto=socket.IPPROTO_TCP)

for ip in sorted({info[4][0] for info in infos}):
    try:
        name = socket.gethostbyaddr(ip)[0]
    except socket.herror:
        name = None
    print(ip, name)

Common errors and how to fix them

The domain does not exist (NXDOMAIN)

The name is misspelled, was never registered, or has expired. Check it with the WHOIS lookup. For a record you just created, check the exact name at your DNS host, since a resolver can cache the earlier negative answer for a while.

The domain exists but has no IP address

The name has no A or AAAA record. Some root domains only handle email, or the site is on www. Try the www subdomain, and add an A record at your DNS host if the root should serve the site too.

A CNAME points to a name with no IP address

The alias still exists but its target has no address, which often happens after a hosted service is cancelled. Update or delete the CNAME. A dangling alias is also a security risk, because someone else may be able to claim the target and serve content on your subdomain.

The IP belongs to Cloudflare instead of my host

The record is proxied, so visitors connect to the CDN and it forwards requests to your server. This is expected. Your origin address is in your DNS host's dashboard or your hosting panel, and DNS will not reveal it.

The domain resolves to 127.0.0.1 or 192.168.x.x

A private address only works inside its own network, so outside visitors cannot reach it. It is usually a mistaken record or an internal name published in public DNS. Replace it with the server's public address.