Document and Entity Information - $ / shares		9 Months Ended
Nov. 14, 2018	Sep. 30, 2018
Details
Registrant Name		FULLNET COMMUNICATIONS INC.
Registrant CIK		0001092570
SEC Form		10-Q
Period End date		Sep. 30, 2018
Fiscal Year End		--12-31
Trading Symbol		fulo
Tax Identification Number (TIN)		731473361
Number of common stock shares outstanding	13,621,009
Filer Category		Non-accelerated Filer
Current with reporting		Yes
Small Business		true
Emerging Growth Company		false
Amendment Flag		false
Document Fiscal Year Focus		2018
Document Fiscal Period Focus		Q3
Entity Incorporation, State Country Name		OKLAHOMA
Entity Address, Address Line One		201 Robert S. Kerr Avenue, Suite 210
Entity Address, City or Town		Oklahoma City
Entity Address, State or Province		Oklahoma
Entity Address, Postal Zip Code		73102
City Area Code		405
Local Phone Number		236-8200
Entity Listing, Par Value Per Share	$ 0.00001

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