The WHOIS Lookup tool retrieves registration records for domain names and IP addresses. Enter a domain, a full URL, an IPv4, or an IPv6 address — the tool identifies the input type automatically, queries the relevant WHOIS servers, and displays each server's response in its own labeled section. Opening the page without entering anything triggers an automatic lookup of your current public IP.
Key Fields in Domain Results
WHOIS data is maintained by registries and registrars. Format varies by TLD, but these fields are the most useful:
- Registrar: The current registrar (e.g. GoDaddy, Namecheap)
- Creation Date: When the domain was first registered — useful for assessing domain age
- Expiry Date: Renewal deadline. After it passes, the domain enters a grace period (typically 0–45 days) and then a redemption period (typically 30 days with high recovery fees)
- Name Servers: The DNS servers — useful for verifying whether a migration has taken effect
- Status:
clientTransferProhibitedmeans the domain is locked and cannot be transferred;clientHoldmeans DNS resolution is suspended
Why Domain Results Show Multiple Server Sections
Common TLDs like .com and .net have two tiers of WHOIS: a registry layer (e.g. Verisign) and a registrar layer. The tool queries both and displays them separately. The registry layer returns basic information; the registrar layer includes more detailed contact and status data. When the two are out of sync, treat the registrar layer (the second result) as authoritative.
IP Address Results
An IP WHOIS query returns data from the relevant Regional Internet Registry (ARIN, APNIC, RIPE, etc.), including:
- Network / inetnum: The address block the IP belongs to
- Organization / netname: The IP holder (e.g. AWS, Cloudflare, a telecom)
- Country: The country where the IP is registered — not necessarily the physical location of traffic
- CIDR: The classless address block, used in firewall rules and network engineering
Private address ranges (10.x.x.x, 192.168.x.x, 172.16–31.x.x) return no WHOIS data — an empty result for a local address is expected behavior.
Contact Information Showing as Privacy Protected
ICANN policy allows registrars to substitute proxy information for real registrant data. Most personally registered domains have WHOIS Privacy enabled, so contact fields display the registrar's generic email or phone number rather than the actual owner's details. This is normal and does not affect domain validity.
Rate Limiting
Many WHOIS servers — especially ARIN, RIPE, and Verisign — enforce per-IP rate limits. Frequent queries will trigger temporary blocks, returning a Query rate limit exceeded error. Waiting a few minutes usually resolves it. For bulk domain lookups, use a commercial WHOIS API to avoid hitting public server limits.
Supported Input Formats
- Domain:
example.comorsub.example.com - URL with path:
https://example.com/path?q=1(the tool extracts the root domain automatically) - IPv4:
1.2.3.4 - IPv6:
2001:4860:4860::8888
Pasting a full link including https:// works correctly — no need to trim it manually.