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

​