Address ownership and reverse DNS
IP Lookup
Resolve a hostname to public IPs, reverse them with PTR, list nameservers when available, and surface ASN or RDAP-based ownership hints.
This page helps you answer who is behind the address, what the hostname resolves to, and whether the public metadata supports your assumption.
The report shows the public addresses attached to the hostname so you can see which IPs the server could actually reach.
ASN data and IP RDAP metadata provide provider, registry, and organizational clues when they are available from the network sources used here.
Reverse DNS and nameserver data help connect the address back to a platform, mail posture, or hosting stack.
Host or IP
IP Lookup
Report
ReadySummary
Server-side diagnostic report
Run a check to generate a structured report with status, timings, technical details, and raw output where available.
01
What this tool checks
Resolved address set
The report shows the public addresses attached to the hostname so you can see which IPs the server could actually reach.
Ownership hints
ASN data and IP RDAP metadata provide provider, registry, and organizational clues when they are available from the network sources used here.
PTR and nameservers
Reverse DNS and nameserver data help connect the address back to a platform, mail posture, or hosting stack.
02
How to use it
Run the lookup against a domain when you want the IP set and nameservers together.
Run it against a direct IP when the main question is reverse DNS or owner metadata.
Move to Domain Info next when the ownership question is really about registrar dates and domain status values.
03
How to read the result
ASN is a clue, not perfect truth
The provider name usually reflects network ownership, which is helpful but not always identical to the application platform serving the site.
PTR can reveal edge infrastructure
Reverse DNS frequently exposes CDN or cloud naming patterns that are invisible in the browser URL alone.
Nameservers describe the zone
When the input is a hostname or domain, nameservers can hint at the DNS provider even if the application is hosted elsewhere.
Guides that help you get more from this tool
Interpret the output, understand common failure modes, and choose the next diagnostic step without leaving the product.
IP Lookup FAQ
Can one hostname resolve to many IPs?
Yes. That is common for CDNs, load balancing, and multi-region setups. The page keeps the full visible set instead of collapsing it to one value.
Why might provider data be missing?
Not every registry or ASN source returns the same fields. The report only shows what the live network sources provided.
Should I trust PTR more than RDAP?
They answer different questions. PTR reflects reverse DNS naming, while RDAP and ASN data reflect network allocation and ownership metadata.