BDIX Basics #BDIX #Internet Speed

What Is BDIX? The Bangladesh Internet Exchange Explained

BDIX is the national peering point where Bangladeshi ISPs exchange traffic directly. Here is what that means for your speed, your data allowance, and the BDIX FTP servers you use every day.

Table of Contents

The Short Answer: What Is BDIX?
What Happens Without BDIX?
The long way round
The BDIX way
Why BDIX Servers Use Private IP Addresses
What BDIX Means for Speed and Data
Speed
Data allowance
Reliability
BDIX vs IIX: What Is the Difference?
Who Runs BDIX?
How to Tell Whether You Have BDIX Access
How to Actually Use BDIX

BDIX - the Bangladesh Internet Exchange - is the meeting point where Bangladeshi internet providers connect to each other and exchange local traffic directly, instead of sending it around the world and back. If you have ever downloaded from a "BDIX FTP server" at full line speed or watched live TV over BDIX without it counting against your data, this is the piece of infrastructure that makes it possible.

This guide explains what BDIX actually is, how peering works, why it makes your connection faster, and how to tell whether your ISP is really giving you BDIX access.

The Short Answer: What Is BDIX?

BDIX is Bangladesh's first and main Internet Exchange Point (IXP). An IXP is a physical facility - switches, routers and fiber in a data centre - where many networks plug in so their traffic can be handed over locally. When two networks "peer" at an exchange, they send traffic directly to each other across that fabric.

BDIX was established in 2004 and operates as a not-for-profit, open and neutral exchange run in the interest of its member networks. Over the years, well over a hundred Bangladeshi networks - from the largest nationwide ISPs to small local operators, mobile operators and content hosts - have connected to it. For a user, the practical meaning is simple: if your ISP peers with BDIX, Bangladeshi destinations are one local hop away.

What Happens Without BDIX?

To see why the exchange matters, picture what a request does when there is no local peering.

The long way round

You open a website hosted in Dhaka, but your ISP and the site's host have no direct connection. Your request travels from your ISP's network to an international gateway, crosses a submarine cable to Singapore or Mumbai, hops through a foreign backbone, and comes back to Bangladesh. Every kilometre adds milliseconds; every congested segment can add buffering, packet loss and slowdowns at peak hours. You also consume international bandwidth - which is one of the most expensive resources a Bangladeshi ISP buys.

The BDIX way

With peering, your request crosses your ISP's link into the exchange fabric and comes out at the destination network - both physically in Dhaka. The round trip is a few milliseconds, the capacity is local and plentiful, and no international bandwidth is used at all. This is why a BDIX FTP server can feel faster than a much closer international site.

Why BDIX Servers Use Private IP Addresses

BDIX media servers live inside ISP and exchange networks, on private address ranges - 10.x.x.x, 172.16–31.x.x, 192.168.x.x and the carrier-grade 100.64–127.x.x range. Addresses like 10.16.100.244 (ICC FTP) or 15.1.1.1 (Circle FTP) are not reachable from the global internet, and that is by design:

Local by definition. A private address only means something inside networks that know the route - in practice, ISPs that peer with BDIX.
Free to carry. Because the traffic never transits a paid international link, ISPs carry it without charging you international bandwidth.
Content stays local. The movie, TV and software servers the Bangladeshi internet is famous for are hosted on these addresses.

The trade-off: reachability depends on who your ISP is. The same address works perfectly on one connection and times out on another, which is the single most common "BDIX server not working" complaint. Our server directory lists which ISP hosts each server, and the BDIX tester checks reachability from your current connection.

What BDIX Means for Speed and Data

Speed

On a BDIX route, your limit is your own package, not the route. A 20 Mbps connection can generally pull 20 Mbps from a well-run BDIX server, with ping of roughly 1–10 ms inside Dhaka. International sites, by contrast, share everyone's international capacity, so evening slowdowns are normal.

Data allowance

Many ISPs treat BDIX traffic as local bandwidth: it does not reduce your international quota, and some "unlimited international" offers are really "unlimited local + capped international". Policies vary by ISP and package, so ask your provider how they meter BDIX traffic - but the technical fact underneath the policy is that BDIX traffic never crosses the expensive submarine cables.

Reliability

Because there is no international leg, BDIX services are largely immune to submarine cable faults - the events that routinely slow or break Bangladesh's access to the wider internet. When a cable is cut, BDIX servers, local CDNs and locally hosted services usually keep running at full speed.

BDIX vs IIX: What Is the Difference?

Bangladeshi ISP pages often advertise "BDIX + IIX", and the terms get mixed up. They are related but not the same:

	BDIX	IIX
Full name	Bangladesh Internet Exchange	Indonesia Internet Exchange (and, loosely, "international internet exchange" in Bangladeshi marketing)
What it is	Bangladesh's national peering point in Dhaka	Indonesia's peering points; from Bangladesh, often used to mean "regional peering routes"
Reach	Networks inside Bangladesh	Networks in Indonesia and the wider region
Typical use	BDIX FTP servers, local sites, local CDN nodes	Faster access to regional services; closer international routes than plain transit
Counts as local data?	Usually yes	Usually no

Rule of thumb: BDIX = inside Bangladesh. Anything described as IIX crosses a border. If an ISP advertises "BDIX included", that is the tier where local FTP servers and live TV live.

Who Runs BDIX?

BDIX is operated as a not-for-profit, open and neutral exchange - its stated purpose is to keep Bangladeshi traffic in Bangladesh, and its policies apply equally to members. It is not owned by any single ISP, which is what makes peering there trustworthy: a small district ISP and the largest mobile operator meet on the same fabric under the same rules. The exchange has grown alongside Bangladesh's ISP industry and today underpins much of the country's domestic internet economy, from FTP media servers to locally cached video and gaming.

For operators, BDIX publishes peering policy and member information on its official site (bdix.net). For everyone else, the visible outcome is the one this guide describes: local traffic that is fast, cheap to carry, and resilient to international outages.

How to Tell Whether You Have BDIX Access

Open a known BDIX server in your browser. Try any address from our BDIX server directory. If a welcome page or file listing loads, you are on a peering ISP.
Run the BDIX tester. Our BDIX tester probes reachability from your current connection and tells you whether BDIX routes are open.
Run a BDIX speed test. The BDIX speed test measures throughput to a local route. Full package speed on the local test means your BDIX access is healthy.
Ask your ISP directly. "Do you peer with BDIX, and is BDIX bandwidth unmetered on my package?" is a normal pre-sales question in Bangladesh - good ISPs answer it instantly.

How to Actually Use BDIX

Using BDIX does not require any special software - the servers are just addresses on your network:

Browse in a browser: type the server address (for example 10.16.100.244) into Chrome or any browser and explore the folders. Full walkthrough: BDIX FTP on Android or BDIX FTP on Windows.
Use an FTP client: for large downloads, an FTP client (FileZilla, or a file manager with FTP support) gives you resume, queues and faster multi-connection transfers.
Watch live TV: many servers publish an M3U playlist or XTREAM portal for IPTV player apps. Start with watching BDIX live TV with an IPTV player.
Find servers: our server directory lists the major BDIX media servers with their hosting ISPs and status.

When something does not open, work through BDIX server not working: troubleshooting guide - in nine out of ten cases the cause is the ISP connection, not the server.

FAQ (Frequently Asked Questions)

What does BDIX stand for?

BDIX stands for Bangladesh Internet Exchange. It is the Internet Exchange Point (IXP) of Bangladesh: the physical meeting point in Dhaka where Bangladeshi ISPs and networks connect their equipment and exchange local traffic directly with each other.

Is BDIX free to use?

For you as a user, yes. Opening a BDIX server or website costs nothing extra and usually does not consume your international bandwidth allowance. ISPs pay their own connection costs to the exchange, and BDIX operates as a not-for-profit, neutral exchange for its members.

Why is a BDIX server faster than a normal website?

Because the traffic stays inside Bangladesh. A normal website crosses one or more international links, adding distance and congestion. A BDIX server is reached over local peering, so ping is typically a few milliseconds and download speeds are limited only by your ISP package, not by international capacity.

Why does a BDIX server not open on my connection?

BDIX servers use private IP addresses (such as 10.16.100.244 or 15.1.1.1) that are only reachable from networks which peer with BDIX. If your ISP is not a BDIX member, or your connection is routed unusually (some mobile data modes, VPNs or hotspot chains), the address simply will not respond.

Does BDIX work on mobile data?

Usually yes. The four mobile operators peer with BDIX, so opening a BDIX server over 4G generally works. Some operators apply fair-usage or routing restrictions on certain plans, and speeds depend on local signal rather than on BDIX itself.

Can I use BDIX from outside Bangladesh?

Only if your connection reaches a BDIX-peering network first, for example through a VPN whose exit is a Bangladeshi ISP. From an ordinary foreign connection, BDIX server addresses are unreachable because they are private addresses inside Bangladeshi networks.

Is BDIX the same as my ISP?

No. Your ISP is your provider; BDIX is the exchange where your ISP meets other networks. You cannot "subscribe to BDIX" - you get BDIX access through an ISP that peers there.

Does using BDIX consume my data pack?

On fixed broadband, BDIX traffic typically does not count against international bandwidth - many ISPs sell it as effectively free local data. On mobile data, regular data charges usually still apply even though the traffic is local. Confirm the policy with your own provider.

Why is BDIX sometimes called an IXP?

IXP stands for Internet Exchange Point - the generic term for facilities like BDIX worldwide. BDIX is simply Bangladesh's instance of one: the first and largest in the country.

Can two users on different ISPs both reach the same BDIX server?

Yes - that is the whole point. The exchange sits between networks, so a customer of ISP A and a customer of ISP B both reach the server at local speed, each through their own ISP's peering link.