# Facebook founding date

entity: /record/facebook.md  
predicate: founded  
page: /record/facebook/founded  
as_of: 2026-11-01  

As of November 1, 2026, Facebook's founding date on the AsOf record is February 4, 2004, dated February 4, 2004, from 2 secondary sources (foxnews.com and time.com). The record holds 1 claim on Facebook's founding date, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.

## Current founding date

What the record asserts on 2026-11-01.

- [Facebook](/record/facebook.md) | founded | 2004-02-04 | valid 2004-02-04 to present | conf 0.85 | valid | [clm_16085D72EA91](/claim/clm_16085D72EA91.md)
  sources: https://www.wikidata.org/wiki/Q355, https://www.foxnews.com/lifestyle/this-day-history-feb-4-2004-harvard-student-mark-zuckerberg-launches-the-facebook, https://time.com/3686124/happy-birthday-facebook/

## Every dated value

One claim per line, oldest first. Superseded claims stay visible.

- [Facebook](/record/facebook.md) | founded | 2004-02-04 | valid 2004-02-04 to present | conf 0.85 | valid | [clm_16085D72EA91](/claim/clm_16085D72EA91.md)
  sources: https://www.wikidata.org/wiki/Q355, https://www.foxnews.com/lifestyle/this-day-history-feb-4-2004-harvard-student-mark-zuckerberg-launches-the-facebook, https://time.com/3686124/happy-birthday-facebook/

## Questions this record answers

### What is Facebook's current founding date?

February 4, 2004, dated February 4, 2004, from 2 secondary sources (foxnews.com and time.com). The record asserts this claim as of November 1, 2026 (status valid, confidence 0.85).


## Get this data

- JSON: /v1/entities/facebook/founded (this fact) · /v1/entities/facebook?predicates=founded (with the entity's coverage; add as_of=YYYY-MM-DD for a date)
- MCP: timeline(entity: "facebook", predicates: ["founded"]) for every dated value · fetch(id: "/record/facebook/founded.md") for this page
- Entity twin: /record/facebook.md · timeline: /timelines/facebook.md

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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.