Read enough proxy pricing pages and you learn to look for the second cap.

A plan says unlimited bandwidth, and buried somewhere underneath is a thread limit that makes the unlimited part academic. You can transfer all you like, one request at a time.

B2Proxy advertises an unlimited tier with no traffic limit and no concurrency limit, and that second half is the part worth reading twice.

The Pool

Eighty million plus residential IPs, described as fresh and active, which is the right pair of adjectives. A huge pool of dead addresses is not a pool, it is a list.

Three ways to buy:

  • Rotating residential, priced per GB, the standard workhorse
  • Static residential, priced per IP per day, for anything that needs to stay put
  • Unlimited, priced by the hour, for bursts of heavy work

That hourly unlimited option is unusual and rather clever. If you have one enormous job that runs for six hours, you rent six hours rather than a month.

Why Concurrency Is the Real Limit

Worth explaining, because it is where most people get caught.

Bandwidth is how much data you move. Concurrency is how many requests you can have in flight at once. For scraping, concurrency is almost always the thing that decides how fast you finish.

A hundred parallel requests against a hundred pages takes about as long as one request against one page. Drop to five parallel and the same job takes twenty times as long, no matter how much bandwidth you were sold.

So when a provider removes the concurrency ceiling, they are removing the limit that actually governs your throughput.

Static at Per Day Pricing

The static residential tier is priced per IP per day rather than per month, which suits short campaigns nicely. You are not buying a month to test a week.

Static addresses are what you want for logins, account management and anything where changing IP midway looks suspicious. Sticky sessions on a rotating pool approximate this, but a genuinely static IP is cleaner when the work is long running.

Who It Fits

  • Scrapers whose bottleneck is parallelism rather than data volume
  • Anyone with short, intense workloads that do not justify a month
  • Projects mixing rotating collection with a few stable addresses
  • Teams who have been burned by a hidden thread cap before

Who Might Look Elsewhere

If your work is light and occasional, per GB alone is simpler and cheaper. The unlimited tier only pays off when you are genuinely pushing.

There is also no dedicated mobile tier here, so if carrier IPs are the specific thing you need, a mobile specialist is the better call.

Final Verdict

B2Proxy is a solid residential provider with one feature that deserves more attention than it gets.

Removing the concurrency cap is the difference between a plan that sounds generous and a plan that actually is. Combine that with per day static pricing and an hourly unlimited option, and you get a provider that fits the shape of real work rather than the shape of a billing cycle.

Start with a small per GB purchase, measure your throughput, then decide if the unlimited tier earns its place. Verify the IPs with our proxy checker first, and see how to scrape without getting blocked for the part no proxy can do for you.