whocrawled.me
Find the operator behind an IP and block every subnet it announces.
Why allowlist by country?
Most abusive bot traffic comes from outside North America. If you only serve customers in the US and/or Canada, there is little value in exposing your services to the entire internet. The country allowlists below let you allow just those networks and deny everything else. Prefer to block one network at a time instead? Use the IP search above to build a targeted per-network list.
Country allowlists
Pregenerated allowlists that allow only US and/or Canadian networks and deny everyone else. Each is offered for both IP versions combined, or IPv4-only / IPv6-only. Refreshed with each weekly sync. See manifest.json for counts, sizes and the data version.
| Allow | cidr | nginx | iptables | htaccess |
|---|---|---|---|---|
| US | bothv4v6 | bothv4v6 | bothv4v6 | bothv4v6 |
| Canada | bothv4v6 | bothv4v6 | bothv4v6 | bothv4v6 |
| US + Canada | bothv4v6 | bothv4v6 | bothv4v6 | bothv4v6 |