White IP
Practice
PRO
Where to Get White Subnets and How to Check
The theory of dirty IPs is covered in this article's companion piece. Here it's hands-on: how to run an address through all the checkers you need in a couple of minutes, where to look for provably whiter subnets, and how to avoid doing all this by hand every time. Enter the address you're checking into the builder above — it will be substituted into the commands.
Read the theory →
This material is about engineering your own infrastructure and is educational in nature. You are responsible for complying with the laws of your own jurisdiction.
Quick check of a single address
Before putting a node into service, I run the address through four checks. The first is subnet type — the most important one. ipinfo.io returns JSON where you care about the org field (the ASN owner) and the type:
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