Indemnification assets

[Table of Contents](#i89c3c9328e454b30b2c14123b867f3f0_7)EQUINIX, INC.NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)  
  
Estimated future amortization expense related to these intangibles is as follows (in thousands):

|  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- |
|  |  |  |  |  |  |
| Years ending: |  |
| 2022 | $ | 196,744  |  |
| 2023 | 195,030  |  |
| 2024 | 193,722  |  |
| 2025 | 191,158  |  |
| 2026 | 190,802  |  |
| Thereafter | 967,811  |  |
| Total | $ | 1,935,267  |  |

Other AssetsOther assets consisted of the following as of December 31 (in thousands):

|  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
|  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2021 |  | 2020 |
| Deferred tax assets, net | $ | 59,816  |  |  | $ | 66,424  |  |
| Prepaid expenses (1) | 87,758  |  |  | 82,443  |  |
| Debt issuance costs, net | 2,130  |  |  | 4,261  |  |
| Deposits | 70,548  |  |  | 69,043  |  |
| Restricted cash | 908  |  |  | 9,691  |  |
| Derivative instruments | 59,917  |  |  | 2,793  |  |
| Contract assets, non-current | 55,486  |  |  | 54,050  |  |
| Contract costs | 325,510  |  |  | 267,978  |  |
| Equity method investments | 245,049  |  |  | 163,071  |  |
| Other assets (2) | 18,944  |  |  | 56,293  |  |
| Total other assets | $ | 926,066  |  |  | $ | 776,047  |  |



|  |  |  |
| --- | --- | --- |
|  |  |  |
|  |

(1)Prepaid expenses included $46.0 million and $21.1 million of capitalized CCA implementation costs, net as of December 31, 2021 and 2020, respectively. (2)In connection with the Metronode Acquisition in 2018, we had indemnification assets of $42.8 million as of December 31, 2020, which represented the seller's obligation under the purchase agreement to reimburse pre-acquisition tax liabilities settled after the acquisition. The amount was insignificant as of December 31, 2021.F-34  

