Bulk IP lookup
Look up to 100 IP addresses at once — country, city, provider, ASN, connection type, proxy/VPN/Tor flags and blocklist status — and export the table as CSV. For log analysis, fraud review and firewall audits.
Results
Paste your IP list
Paste addresses one per line, comma- or space-separated, or as CIDR blocks; duplicates are removed and invalid lines are listed separately.
Limits
Up to 100 addresses per run, looked up four at a time; if the lookup service rate-limits a run, the page pauses and retries on its own. Results use the same ten-minute cache as single lookups. For sustained volume, contact us about an API key via the developers page.
Supported formats
IPv4 and IPv6 in any standard notation, bracketed addresses from logs ([203.0.113.42]), addresses with ports (203.0.113.42:443) and CIDR blocks up to /24 (expanded) — anything else is flagged, not guessed.
Results table
One row per address with country, region, city, provider, ASN, connection type, risk level and flags, each value carrying its source. Sort by any column; filter to show only hosting, VPN, Tor or listed addresses. Click an address for its full lookup.
Export to CSV
Download the table as CSV (UTF-8, comma-separated, one header row) or JSON, with the same columns plus the sources and the time of the lookup. Attribution for the geolocation data (DB-IP CC BY 4.0, and IPinfo CC BY-SA 4.0 where present) is included in the file and must be preserved when you publish results.
Frequently asked questions
How to check IP reputation in bulk?
Paste the list above: every address is checked against the same ten blocklists, VPN/Tor/hosting lists and risk formula as the single IP fraud score page, and the result exports to CSV.
What is the best IP lookup tool?
The one that shows its sources and their dates, and says when sources disagree — which is what ours does. No lookup is more accurate than the databases behind it; the difference is honesty about the uncertainty.
Is it legal to look up an IP address?
Yes. Address lookups return public network registration and reputation data; they involve no personal data and no access to anyone's system.
Is there a way to ping multiple IP addresses?
Not from a browser (it cannot send ICMP). Use fping or nmap -sn on your own system for a list, or the ping test for your own connection.
Can I check someone's IP address?
You can look up the public information about any address — provider, area, reputation — as this page does. You cannot identify the person using it.
Data attribution: IP Geolocation by DB-IP · IP to ASN by DB-IP · IP to ASN data by iptoasn.com · Edge geolocation by Cloudflare · IP geolocation data by IP2Location.io · Time zone boundaries: timezone-boundary-builder (ODbL), © OpenStreetMap contributors · Country reference data: mledoze/countries (ODbL)