How Many Accounts per Mobile Proxy?

Why there is no universal number

Ask ten sellers how many accounts fit on one proxy and you will hear ten numbers. None comes from the platforms, because platforms do not publish thresholds; publishing one would tell abusers where to stop.

What platforms do publish is the kind of data they use. Meta's privacy policy lists device identifiers, device signals, the network you connect from and your IP address. eBay's seller guide on blocked accounts says it keeps names, email and IP addresses and bank details to trace new accounts to restricted ones. TikTok's integrity policy allows multiple accounts but not to deceive people or get around a ban.

Two accounts on one IP with different devices, different payment details and unrelated behavior look like two people in one household. Two accounts on two IPs that share a phone and a card look like one person. The ratio question only makes sense once the other signals are separate.

How CGNAT changes linking

On mobile networks, carrier-grade NAT normally places many subscribers behind each public IPv4 address. A 2016 measurement study by Richter and colleagues found it in more than 90% of the cellular networks it could test.

RFC 6269, the IETF's review of address sharing, spells out the consequence for websites: blocking or blocklisting a shared address affects every subscriber behind it, and access rules that trust an address trust everyone using it. For a site, a carrier IP with several accounts on it is ordinary, because that is what any busy cell looks like.

That is why mobile lines tolerate more accounts per address than data center IPs, where one address usually means one server and one operator. It does not make the IP meaningless. Sites can still log the source port and exact time, which RFC 6302 recommends for exactly this reason, and they combine the address with cookies and device data.

A test-and-scale method

Instead of borrowing someone's number, measure your own:

1. Separate everything except the IP first. One browser profile or device per account, one email and phone per account, separate payment details where the platform takes them.
2. Start at one account per line for the platform you care about most.
3. Add one account. Use it normally for a week: log in, do the work, no automation bursts.
4. Watch for friction. Extra verification, CAPTCHAs on login, phone checks or reduced reach are early signals. Restrictions are late ones.
5. Keep adding one at a time while friction stays at the level of a single account. Stop at the first increase and step back one.
6. Record the result per platform. The ratio that works for a marketplace seller account will differ from the one for social accounts.

Keep the IP steady during this test. Rotating changes two variables at once and hides what caused a change.

What changes the number

The ratio you land on depends on more than the platform:

• Money in the account. Marketplace and ad accounts with payouts or billing are checked harder than a reading account. Expect a lower ratio where money moves.
• Account age. Established accounts with a long, clean history tolerate company on an IP better than accounts created this week.
• Simultaneous sessions. Five accounts that log in one after another through the day look different from five that act within the same minute.
• Country fit. Accounts registered in one country and used from a line in another add a mismatch, whatever the ratio.
• Automation. Scheduled actions fired from one tool at the same moment tie accounts together more firmly than a shared address.

Write these down next to the ratio you measure. A number without its conditions will not transfer to the next project.

When to add a line

Add a line instead of another account on the same one when:

• The accounts belong to different clients, brands or legal entities.
• One account has been restricted and you want to keep its history away from the others while you resolve it.
• The accounts need different countries or carriers.
• Friction rose the last time you added an account.

A Coronium line is one physical device with its own SIM, rented to one customer, so its IP is not shared with other Coronium customers. It is billed for 24 hours, 7 days or 30 days, which lets you run the test above on a short plan before committing. For larger setups, 10 or more lines get 10% off and 25 or more get 15% off, with a code on request. Current prices and stock per country are on the plans and current prices page, and multi-account management covers the wider setup.

Frequently asked questions