---
title: "Formats"
url: "https://help.internetx.com/en/api/core-formats/"
lang: "en"
section: "API reference — API reference (XML/JSON)"
breadcrumb: "General API basics"
updated: "2023-10-25"
---

# Formats

## **D****ata types  
**

-   Number
-   String
-   Integer
-   Boolean
-   Object
-   Enum

## **Number**

|  |  |  |
| --- | --- | --- |
| **Ty****p****e** | **Fo****rmat** | **In****f****o****rmation** |
| number | float | Floating-point number |
| number | double | Double precision floating point numbers |
| integer | int32 | Signed 32-bit integers (commonly used integer type) |
| integer | int64 | Signed 64-bit integers (long type) |

## **S****tring**

|  |  |  |
| --- | --- | --- |
| **Ty****p****e** | **Fo****rmat** | **In****f****o****rmation** |
| string | \- | String of characters |
| string | date | Date,  _2017-07-21_ |
| string | date-time | Date an time,  _2017-07-21T17:32:28Z_ |
| string | password | Hinweis auf UIs zur Maskierung der Eingabe |
| string | byte | base64 coded character |
| string | binary | Binary data |
| string | email | Email address |
| string | uuid | a unique string [RFC4122](https://tools.ietf.org/html/rfc4122) |
| string | uri | Uri (Uniform Ressource Identifier) |
| string | hostname | FQDN (Fully-Qualified Domain Name) |
| string | ipv4 | IP address in IPv4 format, e.g. 69.243.12.3 |
| string | ipv6 | IP address in IPv6 format, e.g. 2001:0db8:85a3:08d3::/64 |
| string | domain | Second-Level-Domain-Name |
| string | language | Language of hint [RFC 3066](https://tools.ietf.org/html/rfc3066) e.g. "de" or "de\_ch" |

## **Others**

|  |  |  |
| --- | --- | --- |
| **Ty****p****e** | **Fo****rmat** | **In****f****o****rmation** |
| boolean |  | Boolean values, e.g. 0, 1 or true, false |
| object |  | Describes a complex structure of data types. |
| enum |  | Corresponds to the defined list of values. |
| any |  | Defines an empty element. |