IP
IPBlocklist Lookup
GitHub
Enter an IPv4 or IPv6 address (e.g. 1.1.1.1)
Loading blocklist data…
IPv4 ranges
IPv6 ranges
160+
Threat feeds
0ms
Server roundtrip
Features

Local-first

Runs in your browser. Nothing sent. No tracking.

Fast

Binary-packed index. Sub-ms lookups, millions of ranges.

IPv4 + IPv6

Full dual-stack coverage. Same query, same result.

Daily refresh

Feeds rebuilt every 24h. Always recent.

Open source

Apache 2.0. Audit, fork, self-host the entire pipeline.

Drop-in data

One intel.bin file. Use anywhere.

Risk scale
60+
High
malware · c2 · compromised
35+
Medium
scanner · tor · spam
15+
Low
vpn · proxy · datacenter
0
Clean
no detections
How it works
01
Paste IP
IPv4 or IPv6, any format.
02
Local lookup
Binary index, zero requests.
03
Get verdict
Score, flags, matching feeds.

Ship it in your stack

Grab intel.bin or integrate the feeds.

View on GitHub