Document and Entity Information - $ / shares		3 Months Ended
May 15, 2019	Mar. 31, 2019
Details
Registrant Name		FULLNET COMMUNICATIONS INC.
Registrant CIK		0001092570
SEC Form		10-Q
Period End date		Mar. 31, 2019
Fiscal Year End		--12-31
Trading Symbol		fulo
Tax Identification Number (TIN)		731473361
Number of common stock shares outstanding	14,021,009
Filer Category		Non-accelerated Filer
Current with reporting		Yes
Small Business		true
Emerging Growth Company		false
Amendment Flag		false
Document Fiscal Year Focus		2019
Document Fiscal Period Focus		Q1
Entity File Number		000-27031
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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The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.

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The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

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A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

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Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.

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Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

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Indicate whether the registrant is one of the following: (1) Large Accelerated Filer, (2) Accelerated Filer, (3) Non-accelerated Filer, (4) Smaller Reporting Company (Non-accelerated), (5) Smaller Reporting Accelerated Filer or (6) Smaller Reporting Company and Large Accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.

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The par value per share of security quoted in same currency as Trading currency. Example: '0.01'.

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The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

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