Resolve PTR (reverse DNS) records for an IP address, and list other domains observed on the same address. `hostnames` is the PTR answer, which is one or more names the IP's operator published; it is never a list of the sites hosted there, because DNS cannot produce one. `sharedHosts` is that separate list, from an observed-hostname corpus, and is null when no co-hosting source is configured. Private and reserved IPs are rejected.

Resolve PTR (reverse DNS) records for an IP address, and list other domains observed on the same address. hostnames is the PTR answer, which is one or more names the IP's operator published; it is never a list of the sites hosted there, because DNS cannot produce one. sharedHosts is that separate list, from an observed-hostname corpus, and is null when no co-hosting source is configured. Private and reserved IPs are rejected.

Free and keyless: no Authorization header, CORS enabled for browser callers. Rate limited per IP at 30 requests/minute and 500/day; the x-ratelimit-remaining-minute and x-ratelimit-remaining-day response headers report what is left.

Example: curl -s "https://api.domainee.dev/v1/tools/reverse-ip-lookup?ip=8.8.8.8" | jq