Unlimited Bandwidth Proxies: Limits That Still Apply

What unlimited bandwidth can mean

Bandwidth is the traffic that passes through the proxy. A plan with no per-GB meter is easy to sell, but the traffic is not the only thing that costs a provider money, so limits often move to other places: how many requests run at once, how many IPs or ports you get, how fast each connection is, and what the terms call acceptable use.

None of this is dishonest by itself, but the headline word does not tell you which limit applies. Read the plan page and the terms for the words threads, concurrent, ports, fair use and speed, and ask support in writing if they are missing.

Six limits to check before you pay

This is a buyer's checklist, not a description of any named seller; confirm each item on the plan you are considering.

Turn the monthly price into a price per GB

Divide the monthly price by the GB you expect to move. For example, a hypothetical plan at US$200 a month equals 500 GB at US$0.40 per GB, which is Proxy302's rotating datacenter rate. If your job moves less than 500 GB a month, paying per GB costs less than that plan; if it moves far more, the flat plan may win, provided its connection and speed limits allow the job.

Measure your traffic first rather than guessing: request 20 of your own URLs through a proxy, add up the response sizes and multiply by your monthly volume. Our bandwidth guide shows the three steps.

• How much proxy bandwidth do I need
• Pay per GB proxies

• Sources:
• Proxy302 product facts and line tests

Test the connection limit on your own target

import time
from concurrent.futures import ThreadPoolExecutor
import requests

PROXY = "http://LOGIN:PASSWORD@HOST:PORT"
URL = "https://example.com/"   # replace with a page you are allowed to request
proxies = {"http": PROXY, "https": PROXY}

def one(_):
    t = time.time()
    try:
        r = requests.get(URL, proxies=proxies, timeout=20)
        return r.status_code, time.time() - t
    except requests.RequestException as e:
        return type(e).__name__, time.time() - t

for workers in (10, 50, 100):
    with ThreadPoolExecutor(max_workers=workers) as pool:
        results = list(pool.map(one, range(workers * 2)))
    ok = sum(1 for code, _ in results if code == 200)
    slowest = max(t for _, t in results)
    print(workers, "workers:", ok, "of", len(results), "returned 200, slowest", round(slowest, 1), "s")

Example only: replace LOGIN:PASSWORD@HOST:PORT and the URL, and request only pages you are allowed to fetch. It runs 10, 50 and 100 parallel requests and reports how many returned 200 and the slowest time.

How to test an unlimited offer

1. Step 1

   Read the plan page and terms and write down every number: connections, ports, IPs, speed, and any fair-use wording.

2. Step 2

   Run the script above against a page of your own target at 10, 50 and 100 parallel requests. Note the share of 200 responses and the slowest time at each level.

3. Step 3

   If results drop at a level lower than your job needs, that level is the practical cap, whatever the headline says. Ask support before buying a month.

   Before continuing Do not hammer a site you do not own with high concurrency. Test against your own pages or a small number of requests.

What Proxy302 sells instead

Proxy302 prices traffic per GB where traffic is metered: rotating datacenter proxies cost US$0.40 per GB from the wallet with no prepaid packs, use US exits only and rotate through thousands of US datacenter IPs; rotating residential costs US$1.50 per GB on the Budget line and US$5 per GB on the Premium line, and bought traffic does not expire. Datacenter IPs rented per IP are priced per IP and term, not per GB.

The dynamic residential lines do not cap concurrent connections: 100 simultaneous connections worked in a November 2026 test. That is a statement about connections, not speed, and the target site's own limits still apply. Datacenter IPs are recognisable as datacenter addresses, so keep account and shop work on residential.

• Rotating datacenter proxies
• Datacenter proxies per IP

• Sources:
• Proxy302 product facts and line tests

FAQ

Read next

Pay per GB proxies

How gigabytes are counted when you pay per GB, the 低价线路 and 优质线路 prices, how to estimate your volume and when leasing an IP costs less.

Concurrent connections on proxies

What a concurrency limit means, how to size 20 to 100 connections from request rate, and a Python thread-pool example.

Rotating datacenter proxies

US datacenter IPs billed per GB from US$0.40/GB, with a new IP on each new connection from a large rotating pool. HTTP and SOCKS5, no packs to buy.

View options and pricing

Do datacenter proxies work?

A 15-minute test with ten of your own URLs before you buy rotating datacenter traffic at US$0.40 per GB.