That is the idea. By informing a valid DDD code, the tool tries to return the state and cities associated with that code according to the consulted dataset.
Carregando ferramenta… / Loading tool…
Find state and cities for a Brazilian DDD area code.
The DDD is a key part of Brazilian phone numbering and is often the first clue used to identify the region behind a number. The tool takes the two digits of the code and returns the associated state (UF) and the list of municipalities covered by that DDD, according to the BrasilAPI dataset. At the same time, many people confuse DDD with the local prefix, assume each code belongs to just one city or do not know how those codes are organized. A single DDD usually covers several neighboring cities, not only the capital. This section was written to answer those common questions clearly, based on Brazil's telephone-numbering system, keeping in mind that number portability lets a person keep their number even after moving.
The DDD (Discagem Direta à Distância) is a two-digit code that identifies a phone area in Brazil. It comes before the local number in intercity calls and appears in registrations, forms and integrations. Valid codes range from 11 to 99, and each one is tied to a geographic region defined in the national numbering plan.
The lookup returns the state (UF) and the list of municipalities covered by that DDD. This makes clear that a code does not map to a single city: it usually groups the main city and several neighboring municipalities within the same numbering area. The full number (prefix plus subscriber digits) does not change the geographic meaning of the DDD.
First example: you enter 11 and get São Paulo as the state, along with a long list of municipalities in the metropolitan region. It is a case where it is obvious that the DDD spans far more than the capital city.
Second example: you enter 48 and get Santa Catarina as the state, with the municipalities of the Florianópolis region covered by the code. In both cases, the result shows the state and the set of cities, letting you quickly confirm the area tied to the number you are analyzing.
The data comes from BrasilAPI, which gathers the mapping between DDDs, states and municipalities. Coverage can be adjusted over time when the numbering plan is reorganized or areas are split, so for sensitive uses it is worth checking how current the data is.
The DDD indicates the numbering area, not a person's current physical location. With number portability, someone can keep their number—and DDD—even after moving to another city or state. That is why the code is a useful regional clue but should not be treated as proof of address.
Paste the code into your HTML and the tool shows up on your page, without J-Kit's navigation and ads. It still runs in the browser of whoever visits your site.
<iframe
src="https://jkit.tools/embed/en-US/ddd-area-code-lookup"
width="100%"
height="600"
style="border:0"
loading="lazy"
title="Brazil DDD Lookup"
></iframe>These references help contextualize formulas, standards, APIs and limitations used on this page. They do not replace professional validation when a result has legal, financial, medical or operational impact.
That is the idea. By informing a valid DDD code, the tool tries to return the state and cities associated with that code according to the consulted dataset.
Find the state and cities served by a Brazilian area code (DDD).
Use two digits, for example 11, 21 or 48.
Looked up in real time through J-Kit's secure backend, with validation, timeout and rate limiting. Nothing is stored on your device. Source: official Brazilian public data.