IPv6 static IP for trading: why it works for broker whitelisting

Short answer: Yes, a dedicated IPv6 address works for broker whitelisting. To a broker's API, an IP is an IP: it checks that requests arrive from an address you pre-registered, and IPv6 addresses register on a whitelist exactly like IPv4 ones. IPv6 has the added benefit that there is a near-limitless supply, so giving every trader their own dedicated address is actually feasible. The only catch is that a small number of brokers still only accept IPv4, which is why IPv4 remains available as a fallback.

Here is why IPv6 is the right default and where IPv4 still fits.

Whitelisting does not care which version it is

A broker's IP whitelist is just a list of trusted source addresses. When your bot sends an order, the broker compares the address it came from against that list. That comparison works identically whether the address is IPv4 (like 203.0.113.5) or IPv6 (like 2401:db8::42). The format is longer, the check is the same.

So the thing that actually matters for whitelisting, a dedicated, unchanging address, is fully satisfied by IPv6. If you want the background on why a fixed address matters at all, see broker API IP whitelisting explained.

Why IPv6 is the better default

The reason TrueIP gives out IPv6 by default is supply.

• IPv4 is exhausted. There are only about 4.3 billion IPv4 addresses, and they ran out years ago. Providers hoard them and charge for them, which is a big reason a static IPv4 costs money.
• IPv6 is effectively unlimited. The address space is astronomically larger, so handing every single trader their own dedicated address is practical, not rationed.

Dedicated is the key word. A lot of cheap "static IP" setups put many users behind one shared IPv4. With IPv6 there is no need to share, so you get an address that is genuinely yours, which is exactly what whitelisting wants.

That is why the free offering is IPv6: it is the version where dedicated-per-trader at no cost is actually sustainable.

When you still need IPv4

A minority of brokers have not added IPv6 support to their API whitelisting yet and only accept IPv4 addresses. If your broker is one of them, an IPv6 address will not whitelist, not because IPv6 is wrong, but because their system only knows how to read IPv4.

For those cases, IPv4 is available at cost. It is the same dedicated-address idea, just on the older protocol that the broker requires. If you are not sure which your broker supports, check their API whitelist settings: if the field accepts an address with colons in it, it takes IPv6.

How the two fit together

You do not have to choose blindly:

• Most setups → a dedicated IPv6 static IP, free, whitelisted once.
• IPv4-only brokers → a dedicated IPv4 address at cost, same approach.

Either way, the goal is identical to any static IP for algo trading: one fixed address your bot connects from, so it stops getting kicked off the whitelist. If you are still deciding whether you need a static IP in the first place, start with do you need a static IP for algo trading.

What TrueIP offers

TrueIP gives you a dedicated, SEBI compliant IPv6 static IP per account by default, hosted in Mumbai for low latency to Indian exchanges, free while we grow the network. For brokers that still require IPv4, a dedicated IPv4 address is available at cost. Same fixed-address guarantee, whichever protocol your broker speaks.

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Want a dedicated IPv6 address for your broker API? Get a free static IP here.