WHOIS IP Lookup
Enter any IP address, domain, or URL to find out who owns it — network operator, ASN, abuse contact, and blacklist status.
What Does This WHOIS Data Mean?
A WHOIS lookup queries global internet registries to find the organization that controls an IP address — which tells you the type of traffic you're actually looking at:
- Residential ISP — likely a real, everyday user.
- Datacenter / Hosting — automated traffic: bots, scrapers, API calls, or servers.
- VPN / proxy / Tor exit node — the real origin is intentionally hidden, a higher risk for fraud, spam, or abuse.
This data comes from the five Regional Internet Registries (ARIN, RIPE, APNIC, LACNIC, AFRINIC) that allocate IP address blocks worldwide, combined with a live AbuseIPDB reputation check — so you get ownership and threat data in a single search.
Understanding Your Results
| Field | What It Means |
|---|---|
| Organization | The company or ISP this IP address block is registered to. |
| ASN | Autonomous System Number — a unique global ID for the network that routes this IP. |
| Network Range | The full CIDR block assigned to this organization (e.g. 45.84.107.0/24). Calculate its host range with the Subnet Calculator. |
| Registry (RIR) | The regional internet registry (ARIN, RIPE, APNIC, LACNIC, AFRINIC) that allocated this block. |
| Abuse Contact | The designated email for reporting spam, attacks, or other network abuse. |
| AbuseIPDB Score | Real-time confidence rating (0–100%) that this IP is currently involved in malicious activity. |
Why Look Up an IP Address?
- Investigate a suspicious login — verify whether an unfamiliar sign-in IP belongs to your usual location, a VPN, or an unrelated network.
- Trace unwanted traffic — identify the network or hosting provider behind spam emails, comment spam, or repeated failed login attempts, including whether it's a known VPN, datacenter, or Tor exit node.
- Audit hosting infrastructure — paste a domain or URL to see exactly where a competitor or vendor hosts their website, before signing up or troubleshooting connectivity.
- Confirm blacklist status — check whether an IP is already flagged in abuse databases before trusting or blocking it.
You're Looking at the Network, Not the Domain Owner
Enter a domain like google.com and this tool resolves its hosting IP with a live DNS lookup — showing you where the site lives, not who registered the domain name.
The CDN proxy trap: if a domain sits behind a reverse proxy like Cloudflare or AWS CloudFront, the network details above describe the CDN's infrastructure — not the hidden origin server actually hosting the site.
Missing domain data? This tool doesn't show a domain's expiration date, registrar (e.g. GoDaddy), or nameservers — that's a separate Domain WHOIS lookup, not an IP WHOIS lookup like this one.
Who's Behind an IP — What You Can (and Can't) Find Out
For a standard US residential address, a lookup reliably shows the major ISP — Comcast (Xfinity), AT&T, Spectrum, or Verizon are the most common — plus its general location (state/city) and its network reputation from the abuse score above. It will not reveal the subscriber's legal name or home address; identifying a specific person behind a residential IP requires a federal subpoena served directly to the ISP.
Business networks and datacenters are a different story — a lookup instantly unmasks the exact corporation that owns the IP block, along with its abuse contact, since organizations register their own address space directly rather than borrowing it from a residential ISP.
The Verdict: How to Act on These Results
Ownership alone isn't a verdict — combine it with the abuse score above. A clean score from a known residential ISP is low-risk. A high score, or a VPN/proxy/Tor/datacenter flag, means the true origin is harder to pin down and deserves more scrutiny.
If the abuse score is high: block the address at your firewall, server, or CDN/WAF level to stop ongoing brute-force attempts or scraping, and report it using the abuse contact shown above.
If it's flagged as VPN, proxy, or Tor: treat orders, sign-ups, or logins from this address with extra scrutiny — legitimate customers rarely transact through a Tor exit node, and the visible IP isn't the real origin anyway.
Run a Deeper Reputation Check →Pro tip for investigators: looking into malicious traffic exposes your own connection to the same network you're investigating. Securing your connection with a VPN before tracking suspicious IPs keeps your own footprint off their radar — compare top-rated VPNs.