Exhibit 22.1

List of Guarantor and Issuer Subsidiaries

The following entities, as of December 31, 2020, were guarantors of the 5.375% senior notes due 2024 issued by Antero Midstream Partners LP and Antero Midstream Finance Corporation.

Name of Entity

    

Jurisdiction of Organization or Formation

    

2024 Notes

Antero Midstream Corporation

Delaware

Guarantor

Antero Midstream Finance Corporation

Delaware

Issuer

Antero Midstream LLC

Delaware

Guarantor

Antero Midstream Partners, LP

Delaware

Issuer

Antero Treatment LLC

Delaware

Guarantor

Antero Water LLC

Delaware

Guarantor