A practical guide to IP lookup
Use the address, source and result status together. An IP lookup supplies network context; it cannot measure connection speed or prove that an address is safe.
Public IP and network
The lookup shows the public address used to reach this service. The provider may also return an ISP, organisation and ASN. Missing fields remain unavailable.
Read the map correctly
The map uses approximate coordinates supplied by ipwho.is. It is not GPS, a street address or a measurement of a person's location. No point is shown without valid coordinates.
Local IP conversion
IPv4 and IPv6 values are converted to decimal, hexadecimal and binary in your browser. The reverse DNS name is calculated without querying a DNS server.
Which tool should I use next?
- DNS lookup: inspect an address record or the A/AAAA records of a domain. This IP form currently resolves domain input to an IPv4 address; it is not a list of every address.
- Whois / RDAP: inspect registration information. A network registration identifies an allocation or organisation, not the person currently using an IP.
- IP change monitor: compare your public IP while the tab remains open. Closing the page stops monitoring.
Why can results be incomplete?
A timeout, provider limit or missing record can leave location fields unavailable even when the public IP is known. A domain may have several addresses; different networks and resolvers may return different answers. Do not interpret missing data as a clean security result.
API response fields and limitations →Use from a terminal
The text endpoint returns only the public IP. JSON also requests approximate network and location data.
curl 'https://ipbulucu.org/api/ip?format=text' curl 'https://ipbulucu.org/api/ip?format=json'
Technical references: ipwho.is API · ARIN Whois / RDAP · RFC 3596