> ## Documentation Index
> Fetch the complete documentation index at: https://www.integrate.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# ETL: LongitudeFromIP

> Look up and return the longitude coordinate for an IPv4 address in dot-decimal notation. Use for IP-based geolocation mapping in ETL pipelines.

## Description

Extracts the longitude from a given IPv4 string (dot-decimal notation).

## Syntax

`LongitudeFromIP(ipaddress)`

## Examples

`LongitudeFromIP('69.59.196.211')` returns -123.343

## Notes

* Negative longitude values are west of Greenwich, UK (0°).
* The function uses GeoLite2 data created by MaxMind, available from [http://www.maxmind.com](https://www.maxmind.com/en/home)

## Return value datatype

Float

## Impact of null value

If input is null, returns null.