Dedicated vs Shared Mobile Proxies: Cost and Risk

• Buy a dedicated port if you keep sessions logged in, map one identity to one IP, need to decide when the IP rotates, or need a defensible record of which IP touched which target and when.
• Buy a shared port or a rotating mobile pool if your requests are stateless and retryable: geo checks, ad verification samples, app store listings, mobile SERP snapshots, low volume QA.
• Buy neither if your target does not actually check for a mobile ASN. Most targets do not. Datacenter IPs give you far more concurrency per dollar, and you can prove which camp your target sits in within an afternoon.

A mobile proxy is a cellular modem with a SIM in it, sitting in a rack somewhere, forwarding your traffic out through a carrier network. You rent access to that modem, not to an IP address. If you need the mechanics first, what a mobile proxy is covers the path from your request to the carrier gateway.

"Dedicated" in this market means one customer per modem. "Shared" means several customers reach the internet through the same modem at the same time. That is the whole distinction, and every cost and risk difference below follows from it.

Note what is absent from that definition: exclusivity of the public IP. You never get that on a mobile network, and a vendor promising it is either reselling something else or does not understand the product.

Three different things get sold under one label, and knowing which is in the cart is half the decision.

The pool product is the one buyers most often mistake for "shared mobile proxies." It is shared in a different sense: you are not queueing behind another tenant on one modem, you are drawing from a large aggregated set of mobile exits, priced by traffic. The failure mode is a bandwidth bill, not a session collision.

This is the most misread line on mobile proxy pricing pages, and it changes what the money buys. Carriers hand mobile subscribers private addresses and NAT them onto a small set of public IPv4 addresses. RFC 6598 reserved 100.64.0.0/10 specifically for that shared address space. Your dedicated modem sits behind the same carrier-grade NAT as ordinary phone customers, so its public IP is shared with real human subscribers whether you paid for exclusivity or not. How CGNAT affects proxies walks through the addressing in detail.

That is not a defect. Human cover is exactly why mobile IPs are hard to block: a target that bans the address bans real customers with it. But it reframes the purchase. A dedicated mobile port buys you:

• no other automation running on your IP at the same instant
• rotation that happens when you say so, not when a stranger clicks a link
• a stable, auditable mapping between one identity and one exit
• a support path when the IP goes bad, including a SIM or carrier change rather than "rotate and try again"

It does not buy a clean-room IP. Contrast that with dedicated datacenter proxies, where exclusivity really is exclusivity at the address level and the reputation of the IP is entirely a product of your own behaviour.

Mobile pricing comes in two incompatible units, which is why vendor comparisons feel slippery. Ports are priced per month, pools per GB, and neither is comparable until you convert both to the same denominator.

The bands below are where public mobile proxy pricing pages have been sitting as of September 2026. They move, and they vary hard by country: US, UK and German ports sit at the top, several Asian and Eastern European markets well below. Price the exact country you need on the vendor's own page rather than trusting a range in an article, this one included.

The break-even between a flat port and a per-GB pool is one division:

break_even_GB = monthly_port_price / pool_price_per_GB

A $120 port against a $6/GB pool breaks even at 20 GB per month. Below that the pool is cheaper. Above it the port is, and the gap widens fast because the port does not meter you.

Two things fall out of that table. Rendered pages wreck per-GB budgets: a JavaScript-heavy product page with images can pull several megabytes, so 20 GB disappears in a few tens of thousands of loads. Blocking images, media and fonts at the browser level is the single biggest cost control on a pool product. And "unlimited" on a port is bounded by physics rather than billing, which is the next section.

A dedicated port is one radio uplink. Everything you run through it queues on that uplink. Practical sustained concurrency on a single 4G port is single digits to low double digits before latency climbs and timeouts start. A good 5G port does better, though the radio generation matters less than vendors imply, as 4G and 5G mobile proxies explains.

So price concurrency, not IP count. If you need 100 parallel requests and one port comfortably carries 10, you are buying 10 ports. At $120 each that is $1,200 a month before you have collected a single record. This is the real reason mobile is a targeted instrument rather than a default: it does not scale horizontally at a price most workloads can absorb.

Shared ports make this worse in a way the price tag hides. Tenants share the same uplink, so your throughput is a fraction of a port that was already small, and it varies with what strangers are doing that hour.

The pair that actually burns people is the first two together. Two tenants touching the same platform from one IP inside the same minute is a far stronger signal than the address itself, because it produces overlapping sessions no real handset would generate. Platform defences reason about behaviour on an address, not only the address. That is also why IP reputation is a moving target on shared infrastructure: part of your score is written by strangers.

Rotation control is the sleeper issue. On many shared ports the rotation link is handed to every tenant, so anyone can cycle the IP under your feet. Halfway through a checkout flow or an authenticated crawl, that produces a session invalidation and a re-auth challenge which looks, from the target side, exactly like an account takeover attempt. If you need the mechanics of holding one IP through a flow, sticky session proxies covers the trade-offs.

Sharing is genuinely fine here, and dedicated prices are waste:

• Verifying that an ad, a price or a store listing renders correctly from a given carrier and city.
• Sampling mobile search results or app store rankings a few times a day.
• Checking a redirect chain or paywall behaviour from a real mobile ASN.
• QA of a mobile web build against a non-corporate network path.
• Any request you can safely retry from a different IP with no state carried over.

The common thread: nothing depends on the previous request, so a neighbour rotation costs a retry rather than an account. Buy the cheapest option carrying the right carrier and country.

• Account operations. One identity to one exit, held for weeks. A shared IP breaks the model the moment a stranger logs into the same platform from it. The mobile proxies for social automation and app testing guide covers the session hygiene this demands.
• Long authenticated crawls. Sessions measured in tens of minutes, where a forced rotation means re-solving login and challenge steps.
• Warm-up periods. If a platform builds trust in an address over days, you cannot share that address with a tenant on a different trajectory.
• Investigative and compliance work. When you may have to state which traffic was yours, an IP shared with unknown parties is not evidence you want to lean on.
• Payment and checkout flows. Overlapping sessions from one address on a merchant or fraud platform is among the fastest ways to get that address blacklisted for everybody on it.

If two or more of these apply, stop comparing prices. The shared option is not a cheaper version of the same thing, it is a different product that does not do the job.

Plenty of buyers reach mobile pricing because a scraper started failing, not because the target demanded a mobile ASN. Test that assumption before committing to $120 a month for 10 parallel requests. The head to head in datacenter vs mobile proxies sets out which targets genuinely inspect network type.

Where datacenter IPs work, the concurrency economics are not close. SparkProxy publishes four plans, all with unlimited bandwidth on a 30 day term:

Those speed figures are ceilings under the fair usage policy, not guaranteed throughput. The network runs 1M+ datacenter IPs across 80+ countries, including 50,000+ US IPs, reached at gateway.sparkproxy.io on port 11000 for HTTP and HTTPS, 11002 for sticky sessions and 13000 for SOCKS5.

curl -s --proxy http://USER:PASS@gateway.sparkproxy.io:11000 https://ipinfo.io/json

Compare on the axis that matters. Boost at $240 gives 500 concurrent threads. Two premium dedicated mobile ports cost about the same and give you roughly 20. If the target does not care about network type, the mobile purchase is spending an order of magnitude more per unit of throughput for a property nothing is checking.

Where the block is behavioural rather than address-based, a managed endpoint often solves it more cheaply than upgrading IP class. The SparkProxy Scraping API starts at 1,000 free credits with no card, then $49 for 250,000 credits a month at 50 concurrency, $99 for 1,000,000 at 100, $249 for 3,000,000 at 200 and $599 for 8,000,000 at 400. A plain fetch costs 1 credit, a JavaScript render 5, a screenshot or PDF 10.

import requests

r = requests.post(
    "https://scrape.sparkproxy.io/api/v1",
    headers={"X-API-Key": "sk-xxxxxxxxxxxxxxxx",
             "Content-Type": "application/json"},
    json={
        "url": "https://target.example/listing/42",
        "render_js": True,
        "country_code": "us",
        "stealth": True,
        "format": "json",
    },
    timeout=120,
)
print(r.status_code, r.json())

Send these verbatim. The quality of the answers tells you more than the pricing page does.

1. How many tenants share one port on the shared plan, and is that a hard cap or a target?
2. Who can trigger rotation on a shared port, and is there a minimum sticky window?
3. Is the exit a real SIM on a named carrier, or an aggregated mobile pool? Which carrier and ASN?
4. Is bandwidth genuinely uncapped on the dedicated port, or throttled after a threshold? Name the threshold.
5. What is the uplink cap on one port, and what concurrency do you consider supported?
6. What happens if the IP is blocked on my specific target? Rotation, SIM swap, port replacement, or nothing?
7. Do I get per-port credentials and sub-users, or one shared account login?
8. What is the trial or refund window, and does testing count against it?
9. Is pricing per port linear at 10 and 25 ports, or is there volume pricing?
10. What is the notice period, and can a port move between countries mid-term?

Two answers are disqualifying on their own. A vendor who will not name the carrier is usually reselling somebody else's ports. A vendor who describes a mobile IP as "yours exclusively" either does not understand carrier NAT or is counting on you not to.

Nearly every mobile vendor sells month to month. Use the first month as the evaluation, and measure against your real target rather than a generic IP echo service.

1. Log the exit ASN, carrier and country on every rotation. If the ASN drifts to a hosting provider, you did not buy a mobile proxy.
2. Run the actual workload, not a homepage fetch, and record success rate per IP rather than in aggregate. One poisoned IP hides inside an average.
3. Time a rotation. Measure the seconds from trigger to a usable new IP. Anything beyond roughly half a minute reshapes your job scheduling.
4. Hold one session for 30 minutes and confirm the IP survives it. On a shared port, run this at a busy hour, not at 3am.
5. Ramp concurrency until latency doubles. That number, not the vendor number, is your port capacity.
6. Re-run the same workload through a datacenter pool. If success rates land within a few points of each other, cancel the mobile order.

Step six is the one people skip, and the one that most often saves four figures a year. Buy the expensive IP class only after cheaper infrastructure has visibly failed on your own target.