Marketing

"lastExternalReferrer" Cookie

Meta Pixel · Meta Platforms

Description

Detects how the user reached the website by registering their last URL-address.

Details

Cookie Name: lastExternalReferrer
Category: Marketing
Service: Meta Pixel
Vendor: Meta Platforms
Popularity: 9.9% of scanned websites
Data Source: Cookie is

Consent Requirement

This cookie is classified as marketing/advertising. It requires explicit user consent under virtually all privacy regulations including GDPR, CCPA, and ePrivacy.

Consent Requirements by Regulation

GDPR & ePrivacy (EU)

Explicit prior consent is required before setting lastExternalReferrer. Advertising and tracking cookies are never covered by the strictly necessary exemption.

UK GDPR & PECR

Explicit consent is required before setting lastExternalReferrer.

CCPA/CPRA (California)

Setting lastExternalReferrer for cross-context behavioural advertising is treated as sharing personal information: provide a "Do Not Sell or Share" opt-out and honour the Global Privacy Control signal.

Managing lastExternalReferrer with a Consent Banner

A consent management platform keeps lastExternalReferrer blocked until the visitor opts in to the marketing category. Kukie.io's scanner detects it automatically, categorises it, and the banner's auto-blocking holds back the script that sets it until consent is given - visitors who decline never receive it.

Frequently Asked Questions

Does the lastExternalReferrer cookie require consent?

Yes. lastExternalReferrer is a marketing cookie and requires explicit prior consent under GDPR, PECR, and the ePrivacy rules, plus a sale/share opt-out under CCPA/CPRA.

Who sets the lastExternalReferrer cookie?

lastExternalReferrer is set by Meta Pixel (vendor: Meta Platforms). It is categorised as marketing.

How common is the lastExternalReferrer cookie?

lastExternalReferrer appears on about 9.9% of the websites scanned by Kukie.io, based on real scan data.

How do I block or delete the lastExternalReferrer cookie?

Visitors can delete lastExternalReferrer at any time through their browser's cookie settings. Site owners can keep it blocked until consent with a consent management platform: Kukie.io's auto-blocking holds marketing cookies back until the visitor opts in.