<SEC-DOCUMENT>0001415889-25-010197.txt : 20250404
<SEC-HEADER>0001415889-25-010197.hdr.sgml : 20250404
<ACCEPTANCE-DATETIME>20250404160932
ACCESSION NUMBER:		0001415889-25-010197
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250404
FILED AS OF DATE:		20250404
DATE AS OF CHANGE:		20250404

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SCHAEFFER DAVE
		CENTRAL INDEX KEY:			0001166976
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-51829
		FILM NUMBER:		25814636

	MAIL ADDRESS:	
		STREET 1:		C/O COGENT COMMUNICATIONS HOLDINGS, INC.
		STREET 2:		2450 N ST NW, 4TH FLOOR
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20037

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COGENT COMMUNICATIONS HOLDINGS, INC.
		CENTRAL INDEX KEY:			0001158324
		STANDARD INDUSTRIAL CLASSIFICATION:	COMMUNICATION SERVICES, NEC [4899]
		ORGANIZATION NAME:           	06 Technology
		EIN:				522337274
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2450 N STREET, NW
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20037
		BUSINESS PHONE:		2022954200

	MAIL ADDRESS:	
		STREET 1:		2450 N STREET, NW
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20037

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COGENT COMMUNICATIONS GROUP INC
		DATE OF NAME CHANGE:	20010828
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4-04042025_080429.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-04-04</periodOfReport>

    <issuer>
        <issuerCik>0001158324</issuerCik>
        <issuerName>COGENT COMMUNICATIONS HOLDINGS, INC.</issuerName>
        <issuerTradingSymbol>CCOI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001166976</rptOwnerCik>
            <rptOwnerName>SCHAEFFER DAVE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2450 N ST NW</rptOwnerStreet1>
            <rptOwnerStreet2>4TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>WASHINGTON</rptOwnerCity>
            <rptOwnerState>DC</rptOwnerState>
            <rptOwnerZipCode>20037</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>CHAIRMAN, CEO, AND PRESIDENT</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-04-04</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>48317</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4395721</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">On February 24, 2021, the reporting person was granted an award of up to 105,000 performance shares. Tranche 1 of this award, consisting of 35,000 performance shares, was dependent upon achievement of a total shareholder return (&quot;TSR&quot;) goal compared to the TSR of the Nasdaq Telecommunications Index (&quot;NTI&quot;) between April 1, 2021 and December 31, 2024.  The tranche 1 TSR performance shares vested in full and were delivered on February 10, 2025.   Tranche 2 consisting of 35,000 performance shares was dependent upon achievement of growth rate in cash flows from operating revenue as compared to 2.0 times the growth rate of the NTI between April 1, 2021 and December 31, 2024.  Tranche 3 consisting of 35,000 performance shares was dependent upon achievement of Company's growth rate in revenue as compared to 1.5 times the growth rate of the NTI between April 1, 2021 and December 31, 2024.</footnote>
        <footnote id="F2">On April 4, 2025 the Company determined that, using the performance criteria for the tranche 3 revenue growth rate, 21,683 shares of common stock were earned and vested and 13,317 performance shares were forfeited.   The Company also determined that using the performance criteria for the tranche 2 cash flow growth rate, no shares of common stock are earned and 35,000 performance shares were forfeited.   The forfeiture of an aggregate 48,317 performance shares, as reported herein, was implemented on April 4, 2025.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ David Schaeffer</signatureName>
        <signatureDate>2025-04-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
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</SEC-DOCUMENT>
