Someone on X wrote it the way most people experience it: "I've got my main account banned from IG ... and my fb got deleted. So for safety reasons (I don't want to my ..." The snippet stops there. The safety measure they were about to describe is probably the one everybody reaches for: new phone, new proxy, start over. A BlackHatWorld thread titled "Instagram Bans" has a reply that cuts that plan off at the knee: "The separate phone/IP probably isn't helping if Instagram already associates the model and the operation with previously banned accounts."
So: when a ban spreads from one account to the rest, what did Instagram use to connect them, and which of those connections does a fresh IP actually cut? We sell IP addresses, so you would expect a flattering answer. The IP is one link in a chain of seven. A new address cuts exactly one. The signup-time verdict on the address itself is covered in which IP gets a new account through, and the one-proxy-per-account basics in how to run multiple Instagram accounts. Neither is repeated here.
Why the other accounts fell after the main
The other accounts fell because Instagram had already decided they belonged to the same person as the main, and a ban is evidence against everyone in that group. From the outside it looks like a chain reaction. From the inside it is one decision applied to one cluster.
The clustering happened long before the ban: the second account was opened on the same phone, verified from the same SIM stack, added to the same Accounts Center, or paid for a boost with the same card. Nothing was wrong at the time. Then the main tripped a rule and the group went with it.
A BlackHatWorld thread on making money through Instagram DMs describes the shape: "The most common problem is with how compliant the main account is ... mains will get banned frequently." A main plus satellites is one operation, and Instagram appears to treat it as one. Someone on r/SocialMediaMarketing running "5 Instagram and Facebook accounts across my brands" wrote that "the ban waves this year have been rough" and "even my older established accounts getting flagged more often now." Age helps. It is not immunity.
We do not know Instagram's internals. Nobody outside Meta does. The ties below are the ones Meta documents in its own products, plus the ones these threads tripped over.
What Instagram ties accounts together with
Instagram ties accounts together with at least the seven things below, and the IP address is the only one a proxy touches.
The IP address
The address is the tie everybody knows about, and it is real. Two accounts that always log in from one home connection share an obvious signal. A dedicated address per account removes this tie completely. That is the whole of what we sell for this problem. One tie out of seven.
The device and the app install
The phone is a stronger tie than the address. The app has an install identifier, the phone has hardware and OS characteristics, and every account ever logged in on it shares them. Logging the new account in "just once" on the old phone puts it in the group. Antidetect browsers give each account its own device on the desktop. On a phone, the honest answer is a separate phone.
Phone number, email and Accounts Center
A phone number is a hard identifier and Instagram asks for it repeatedly. Reusing one across accounts, or cycling numbers from the same cheap virtual pool, ties the accounts together whatever the IP says. A shared recovery email is a weaker link. Still a link.
Accounts Center is the explicit version. It is Meta's own feature for saying "these Instagram and Facebook accounts are one person." Put two accounts in one Accounts Center and you have told Instagram they belong together. The X poster's main and their Facebook went down together. They do not say why, but a linked Facebook is the usual reason an Instagram ban and a Facebook deletion arrive in the same week.
The payment instrument
A card is a tie that survives everything. Someone on r/VPN had a residential proxy set up correctly and still could not boost a Reel: "They simply declined my CC payment saying I'm in the wrong location." The address said one country, the card said another, and the payment check believed the card. The same card on two accounts is one person on two accounts; the Meta ad account post has the Facebook version.
Contacts and the face in the photos
Contact sync uploads your address book. Two accounts that sync the same contacts overlap in a way Instagram can see and a proxy cannot hide. Turn it off before the first login.
The content is a tie too. A BlackHatWorld thread on account creation warns that "pulling images from online is a bad move. Apart from getting flagged, you can run into copyright or impersonation issues, and reverse-image matching is a thing." Five accounts posting the same person, the same product shots or the same watermark are visibly one operation, which is what the "Instagram Bans" reply meant by "the model and the operation." A new IP does nothing to a face.
Behaviour and timing
Accounts that do the same things at the same times get grouped by that alone. A reply in a BlackHatWorld thread on Instagram spam: "Using dolphin anty and proxies can help a bit, but Instagram still detects spam like behavior Even if you make new accounts repeating the same patterns." Same follow ratio, same DM script, same posting hour, same tool. The address changed, the fingerprint changed, the pattern did not. This one has no product answer.
The account's own history, including "Account based in"
Every account carries its record: where it was created, which numbers verified it, which devices opened it, which countries it has been used from. Instagram shows a piece of this under "About this account" as "Account based in". Someone on BlackHatWorld asked the direct question: "I bought an aged Instagram account that had it's location based in Vietnam. I am using a US proxy, how would I change it to US instead of Vietnam?" That gets its own section below. The short version: the proxy changes today's address and the record keeps yesterday's.
What a dedicated IP cuts, and what a shared exit adds
A dedicated address that only you use cuts the IP tie between your accounts, while a shared or previously spammed exit adds a tie to strangers whose accounts were banned before yours.
That second half is the part people miss. An address has a history, and if other people wrote it, you inherit it. A comment on r/TOR describes the extreme case: "A year or two ago Instagram immediately banned my any new account if I occasionally opened it with any free known proxy or tor. Even though I never had any activity there besides opening some profile once in three months." Zero activity. The account died for the company it kept.
A reply in a BlackHatWorld thread on running Instagram farms says the same about paid pools: "stop using shared proxy IPs completely, They are so badly spammed that you will start losing your accounts too sooner or later." A rotating residential pool is shared by definition. A mobile IP is shared with real subscribers, which Instagram tolerates and which costs more; do you actually need mobile proxies has that trade-off. A static ISP address is used by nobody but you from the day you rent it. Dedicated means the absence of other people's history. Nothing more. A shared exit, by contrast, cuts nothing (your other accounts are still tied through the phone and the number) and adds a tie to whoever was on it last month.
How to rebuild so one ban stays one ban
The rebuild is one of everything per account, nothing carried over from the banned group, and the discipline to keep it that way after the first week.
One phone, or one antidetect profile on desktop, per account. One SIM in the country of the address, kept, because the number gets asked for again. One dedicated static address per account, never rotated mid-session. One email that appears nowhere else. No Accounts Center link to the old group, no linked Facebook unless it is also new, no contact sync. A different card if the account will ever pay for anything. Different photos, different name. A recognisable face is a tie you cannot cut.
Then the boring part. Do not open the new account on the old phone to check a DM. Do not run the same follow script on the same schedule. The "Instagram Bans" reply explains why: if Instagram already associates the operation with earlier bans, the phone and the address were never the load-bearing links. They were the two that were for sale.
Agencies managing other people's accounts have a different setup: one IP per client.
What to expect from "Account based in"
"Account based in" is Instagram's own summary of where it thinks the account lives, derived from the account's history, and a proxy does not rewrite history. Instagram describes it as based on signals such as where the account is used and the location of the device. It is not a setting. No field to edit.
So, the Vietnam question. The account was created in Vietnam, verified with what was probably a Vietnamese number, and used from Vietnamese devices for as long as it was aged. A US address changes the newest signal only. Whether the label moves depends on every other signal agreeing with it for long enough: a US number, a device with a US region, US usage, nothing else. That may happen. It may never happen on a bought account, because the creation record does not change. We have no timeline, and anyone who gives you one is guessing.
If the label matters, build a new account in the target country from the first minute: fresh address, local SIM, device set to that region. Less work than arguing with a record.
FAQ
Does Instagram ban by IP address?
Mostly at signup and login rather than as a punishment. An address on a known proxy, VPN or Tor range, or one that has produced many accounts, gets refused or sent to verification. An existing account on a shared exit can be caught up in what the exit's other users did.
If my main Instagram account gets banned, will my other accounts get banned?
If they share a phone, a number, an Accounts Center, a card, contacts or a face with the main, they are probably in the same group and at risk. If they share nothing but a country, probably fine. Most people share more than they think.
How do I change "Account based in" on Instagram?
You cannot set it. Instagram derives it from the account's history and current signals. Using the account only from the new country, with a number and a device from that country, is the only lever, and on a bought account it may never move.
Will a new proxy fix a banned Instagram account?
No. The ban is on the account. A new address helps the next account avoid inheriting the IP tie, and only that tie. If the next account shares a phone, number or card with the banned one, the address was never the problem.
Are shared proxies safe for Instagram?
Shared pools carry the history of everyone who used them, and the advice to "stop using shared proxy IPs completely" comes from a BlackHatWorld thread by people who lost accounts that way. Mobile IPs are shared with real phone subscribers, which Instagram tolerates. For an account that matters, a dedicated static address is the safe end.
Can Instagram link accounts through the same phone?
Yes, and the phone is a stronger link than the IP. The app install, the hardware and every account ever logged in on it are visible to Instagram regardless of the proxy. One phone per account.