Common use of Parent Borrower Clause in Contracts

Parent Borrower. CORESITE, L.P., a Delaware limited partnership, by its general partner, CoreSite Realty Corporation, a Maryland corporation By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇▇ Title: Senior Vice President, Legal, Secretary, and General Counsel Executed Solely for the Purposes of the Waivers set forth in Section 39 hereof: SUBSIDIARY BORROWERS: CORESITE REAL ESTATE 70 INNERBELT, L.L.C., a Delaware limited liability company CORESITE REAL ESTATE ▇▇▇ ▇. ▇▇▇▇▇▇▇, L.L.C., a Delaware limited liability company ▇▇▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇▇▇, L.L.C., a Delaware limited liability company CORESITE REAL ESTATE 1656 ▇▇▇▇▇▇▇▇, L.L.C., a Delaware limited liability company CORESITE REAL ESTATE 427 ▇. ▇▇▇▇▇▇▇, L.L.C., a Delaware limited liability company CORESITE CORONADO ▇▇▇▇▇▇▇, L.L.C., a Delaware limited liability company CORESITE REAL ESTATE ▇▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇ L.L.C., a Delaware limited liability company CORESITE REAL ESTATE ▇▇▇▇ ▇▇ ▇▇▇▇ ▇▇▇▇▇▇, L.L.C., a Delaware limited liability company CORESITE ONE WILSHIRE, L.L.C., a Delaware limited liability company CORESITE REAL ESTATE 55 S. MARKET STREET, L.L.C., a Delaware limited liability company By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇▇ Title: Senior Vice President, Legal and Secretary

Parent Borrower. CORESITE, L.P., a Delaware limited partnership, by its general partner, CoreSite Realty Corporation, a Maryland corporation By: /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Title: Treasurer and CFO (SEAL) For the purposes of Section 14: CORESITE REALTY CORPORATION, a Maryland corporation By: /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Title: Senior Vice President, Legal, Secretary, Treasurer and General Counsel Executed Solely for the Purposes of the Waivers set forth in Section 39 hereof: CFO (SEAL) SUBSIDIARY BORROWERS: CORESITE REAL ESTATE 70 INNERBELT, L.L.C., a Delaware limited liability company By: /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Title: Treasurer and CFO CORESITE REAL ESTATE ▇▇▇ ▇. ▇▇▇▇▇▇▇, L.L.C., a Delaware limited liability company By: /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Title: Treasurer and CFO ▇▇▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇▇▇, L.L.C., a Delaware limited liability company By: /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Title: Treasurer and CFO CORESITE REAL ESTATE 1656 ▇▇▇▇▇▇▇▇, L.L.C., a Delaware limited liability company By: /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Title: Treasurer and CFO CORESITE REAL ESTATE 427 ▇. ▇▇▇▇▇▇▇, L.L.C., a Delaware limited liability company By: /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Title: Treasurer and CFO CORESITE CORONADO ▇▇▇▇▇▇▇, L.L.C., a Delaware limited liability company By: /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Title: Treasurer and CFO CORESITE REAL ESTATE ▇▇▇▇ ▇▇ ▇▇▇▇ ▇▇▇▇▇▇, L.L.C., a Delaware limited liability company By: /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Title: Treasurer and CFO CORESITE ONE WILSHIRE, L.L.C., a Delaware limited liability company By: /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Title: Treasurer and CFO CORESITE REAL ESTATE ▇▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇ L.L.C., a Delaware limited liability company CORESITE REAL ESTATE ▇▇▇▇ ▇▇ ▇▇▇▇ By: /s/ ▇▇▇▇▇▇, L.L.C., a Delaware limited liability company CORESITE ONE WILSHIRE, L.L.C., a Delaware limited liability company ▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Title: Treasurer and CFO CORESITE REAL ESTATE 55 S. MARKET STREET, L.L.C., a Delaware limited liability company By: /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇▇ Title: Senior Vice President, Legal Treasurer and SecretaryCFO