Bing Proxy: Market Selection, Local Results and Session Separation

There are two typical profiles that use Bing over a proxy. One is the team that wants to see how its own content is listed in another market; the other is the agency checking how local business and map blocks change from city to city. Both ask the same question: is the page I see really the page the target user sees?

The answer depends on three settings being consistent with one another. The result market and interface language are set in the request address, the location interpretation is read from the exit address, and the layout the page arrives in is determined by how the browser identifies itself. If you do not set these three up separately, the screenshot you hold is a mixture nobody actually sees.

The sections below cover, in order, these settings, the behaviour of local blocks, the effect of device class, and the routine that makes a measurement repeatable. The setup side comes last; it is more productive to clarify what you are measuring first.

What inputs is a Bing result page compiled from?

A result page is not a single piece. The organic link list, answer boxes, image and video strips, shopping and local blocks all sit on the same page but come together from different sources. Which blocks appear varies with the intent of the query; a brand query and a "near me" query do not produce the same layout.

Four inputs stand out in the compilation of these blocks: the query text, the selected market and language, the geographic context of the request, and the client's device class. Of these, the proxy directly affects only the third — the geographic context. Market and language are fields you send; device class is read from the identity string the browser declares.

Why does keeping the distinction clear matter? Because when you see an unexpected result, this distinction tells you where to look. If the local block never appears, the problem is usually the location context. If the interface comes in English, look at the language field. If the page layout differs from what you expected, device class is at play. When all three are mixed together, diagnosis becomes impossible.

Keep the result market and the interface language separate

On Bing, market and language are separate fields. The market states the country-language pair in whose context results will be compiled; the language states which language the interface and preferred content will arrive in. The two usually go together, but they need not: you can request the German market with an English interface. These fields are documented in Bing's search interface and are widely used in the web interface as well.

There is also a country field, used to narrow the source country of results, and it can behave independently of the market selection. If you set all three to different values at once, it becomes hard to explain why the result came out as it did. Keep the rule simple when setting up a measurement: market, language and exit country should point to the same target, and differentiate them only for a deliberate experiment.

The proxy sends none of these fields. The proxy only changes where the request comes from; the fields in the address line are your responsibility. Likewise, the browser's language header stays on the client. Using a German exit while sending a Turkish language header means giving Bing two contradictory hints, and the result lands somewhere between the two.

When choosing an exit country, look not at the length of the list but at whether it covers the markets you will measure. Heavily used exits on the European side are usually set up via Germany and the Netherlands; these two countries have a wide variety of providers and connect to neighbouring markets with low latency. If you are going to test the US market, factor in state differences too: within the same country, east coast and west coast exits can produce different results in location-sensitive blocks.

Session, cookies and profile: a setup that does not contaminate the measurement

The personalisation debate usually revolves around the IP, but the weight is often on the session. An open account, accumulated cookies and the context left by previous searches can affect the appearance of results more directly than the exit address. The proxy does not touch this layer; that is why a comparison made by toggling the proxy on and off in the same browser is not clean.

The solution is isolation: a separate browser profile for measurement, no account in that profile, no extensions, and a setup that does not accumulate history. Bind the exit to the profile; a setting defined at operating system level covers all applications and routes your everyday work as well. This distinction is especially important in browsers such as Edge that inherit the system setting: a proxy defined on the Windows side also pushes traffic from applications you are not measuring through the same exit, contaminating both volume and pattern.

The second point, as important as the profile, is that the exit stays the same throughout the measurement. If the address changes midway, the first half of the table comes from one country and the second half from another. Static exits are preferred for work that needs a fixed address; rotation suits open data reading work that carries no session.

If you work as a team, the authentication method also belongs under this heading. For offices with a static IP, whitelisting is practical: you embed no information in the client and authorisation is read from the address. Mobile users, however, need a username and password, because the network they connect from changes every day. Mixing the two methods on the same account is the most common cause of unexpected authorisation errors.

Local blocks, map results and business cards

Local results are the most location-sensitive part of the page. For "near me" style queries, the businesses listed change depending on where the request connects from. A country-level exit is often not enough here: a German exit shows you the German market but does not let you tell Munich results from Hamburg ones.

A city-level view requires two things. First, a pool that supports city targeting; second, the browser's location permission being off. If location permission is on, the coordinates reported by the device take precedence over the exit address, and what you are measuring is not the proxy but where you are sitting. The targeting logic is covered in detail in city and ISP-based targeting .

Map and business cards are also fed from a separate data source; for that reason the local block can change while the organic ranking does not, or vice versa. Do not reduce the two to a single "ranking" number — record them in separate columns. Sometimes no local block appears at all for the same query; this is not an error, but the query intent being interpreted differently at that moment.