ipIPv4 vs IPv6: the differences that matter
Compare IPv4 and IPv6 addressing, dual-stack connections, and the reasons lookup results may differ.
Read guideTHE INTERNET’S ADDRESS BOOK
Bulk IP lookup
More addresses, one search.
Look up up to 20 IP addresses at once. Compare location and provider information, explore individual IP details, and export results as CSV.
YOUR IP ADDRESSDetecting…
Determined from your current connection.
◇ No account neededIPv4 and IPv6 support
Prepare and review a bulk lookup
Use a batch to compare networks, not to identify individual people. The input limit counts entries before duplicate strings are removed.
- Remove URL schemes, ports, and CIDR suffixes before pasting.
- Compare successful and failed counts; do not silently discard errors.
- Export CSV and add the query time to your report, as the file does not include a timestamp column.
- Input
- Up to 20 entries; separate with new lines, commas, spaces, or semicolons.
- Duplicates
- Identical strings are queried once; different IPv6 spellings may remain separate.
- Failed rows
- Invalid input, private networks, quotas, and provider failures need different next steps.
Location and network data: ipwho.is. Availability and accuracy depend on the provider.
QUICK ANSWERS
A little more clarity.
What you should know about IP addresses.
What can an IP lookup tell me?
See the approximate location, internet provider, network, and time zone of a public IP address. It does not reveal a person’s name, phone number, or home address.
Is the location precise?
IP location is approximate, not GPS data. VPNs, mobile networks, and provider routing can make an address appear in a different city.
How does bulk lookup work?
Paste up to 20 addresses on the bulk lookup page. Separate them with new lines or commas. Duplicate addresses are queried once. Download the results as CSV.
How is lookup data processed?
The queried IP address is sent to ipwho.is to retrieve location information. This application does not maintain a query history database; hosting and data providers may retain technical logs. Your language is determined by the page address.
YOUR NETWORK TOOLKIT
All tools ↗Explore all tools
WHOIS Lookup
Read public domain or IP registration information through RDAP.
Open toolDNS Lookup
Query A, AAAA, MX, TXT, NS, CNAME and SOA records.
Open toolPort Checker
Check six common TCP ports on one public IP address.
Open toolPing Test
Measure TCP connection time from our server to the target on port 443.
Open toolHosting Check
Inspect data-center classification and the network provider of an IP address.
Open toolVPN Detection
Check whether a public IP is a known VPN exit node.
Open toolProxy Detection
View known proxy and Tor exit-node classifications for an IP address.
Open toolInternet Speed Test
Measure download, upload and HTTP latency between your browser and our server.
Open toolDetailed IP Lookup
View approximate location, ISP and ASN for an IP or domain.
Open toolIP Subnet Calculator
Calculate network, broadcast, mask and usable address range from IPv4 and CIDR.
Open toolMAC Address Lookup
Look up a MAC vendor record or generate a locally administered test address.
Open toolGlobal DNS Propagation Check
Compare Google and Cloudflare DNS answers side by side.
Open toolSecure Password Generator
Generate a strong password locally with cryptographic randomness.
Open toolSubdomain Finder
Check DNS records for www, mail, api and other common subdomains.
Open toolTHE JOURNAL
All articles ↗IP & networking guides
Why does your IP change on mobile internet?
Learn how mobile data, Wi-Fi, carrier exits, and shared addresses affect IP lookup results.
Read guidePublic vs private IP: what is the difference?
Learn why your router and an IP lookup site show different addresses, and how private and public addressing differ.
Read guide