Coronium Alternative — Pool Gateway With Pay-Per-GB and AI-Agent Payments

Coronium is a mobile-only proxy provider with strong European coverage. They run a fleet of physical mobile modems hosted on real carrier networks across multiple EU countries (notably Italy, Germany, the UK, and Spain) and rent them to customers as dedicated ports. The product positioning is clean — "real mobile proxies for serious operators" — and they are well-regarded inside the niche mobile-proxy community.

The core economic model is per-modem subscription. You buy a port for a month, the modem is yours for that period (with rotation triggers), and you pay a flat monthly fee regardless of bandwidth used. This differs structurally from gateway-based pay-per-GB models — you're buying capacity, not consumption.

Coronium has been operational for several years and has earned a solid reputation for honesty about IP source. They publicly state which carriers their modems run on, which is rarer than it should be in this industry.

Coronium operates on a per-modem-per-month subscription model. You select a country and carrier, pay a flat monthly fee, and the modem is dedicated to you for that period. Rotation is on-demand or scheduled.

For workloads that consume large volumes of bandwidth on a single dedicated IP — multi-account ad ops, sustained scraping of a specific target, long-running browser sessions — this can be cost-effective. For variable or burst workloads, per-modem subscriptions get expensive fast because you pay even when idle.

Coronium does not publicly tier coverage across many countries; their geo focus is European mobile carriers with select North American support. If your workload requires US T-Mobile, AT&T, or Verizon mobile IPs across multiple cities, Pool Gateway is more flexible.

Coronium specializes in real mobile carrier IPs from European operators — TIM, Vodafone Italy, Orange France, Three UK, Movistar Spain, and similar. They publish carrier names openly. The pool is smaller than aggregator-style networks but the IPs are unambiguously real mobile.

There is no residential or datacenter offering. Coronium is mobile-only by design, which means you can't fall back to a cheaper IP type for low-stakes workloads — you pay mobile-tier pricing for everything you do.

Modem assignments are typically dedicated for the subscription period. This is excellent for IP consistency (multi-account ops, session continuity) but limits flexibility — if you need to switch country mid-month, you typically buy a new modem.

Both networks deliver real mobile carrier IPs. The structural differences:

PROXIES.SX uses a single endpoint with username-DSL routing. Change country, carrier, city, or rotation by changing one token in your proxy username — no per-port provisioning, no separate credentials per geo. Coronium gives you per-modem credentials.

PROXIES.SX is pay-per-GB with no monthly commitment. Coronium is per-modem-per-month flat. For variable workloads (typical scraping operations, ad verification campaigns, multi-account testing), pay-per-GB tends to be substantially cheaper. For sustained heavy single-IP workloads, dedicated modem subscriptions can win.

PROXIES.SX supports x402 USDC payments — autonomous AI agents can pay for proxy access without an account. Coronium has no agent-native payment path.

PROXIES.SX covers US T-Mobile, AT&T, Verizon plus EU carriers; Coronium is EU-focused. If you need American mobile IPs at scale, the gap is meaningful.

Coronium is a smaller player so the public review surface is limited compared to giants. Recurring observations from users:

If you have an active Coronium subscription you don't want to lose, there's no need to cancel — try PROXIES.SX in parallel and compare actual workload economics over 30 days.