The short answer
A proxy pool is the collection of IP addresses available to you. With a rotating residential proxy, it might be millions of home IPs worldwide; with a dedicated datacenter plan, it might be the 25 IPs you rent.
What actually matters
Headline numbers like "70 million IPs" count every IP seen over months. What helps you is how many are online right now in the country you target, how many different subnets and ASNs they come from, and how clean their reputation is. A smaller, fresher pool beats a huge, abused one.

Also known as
IP pool, proxy network, IP inventory.
Learn more
- How big should your proxy pool be?
- What is a rotating proxy?
- How providers source their IPs
- Residential proxy providers compared
- The Spamhaus IP blocklists
- IANA number resources
- FBI warning on botnet-built proxy pools
- Internet measurement research at CAIDA
Editorial note: Proxy providers change their pools, features and prices often, so treat any figures here as typical ranges at the time of writing and confirm current terms with the provider before you buy.