The Federal Communications Commission (FCC) has granted a total of 146 licenses and call signs in the category of Restricted Operator license in Castle Rock, Colorado. Select a call sign from the table below to view its details such as the date of authorization, expiration date, service description, and so forth.
| Call Sign | License Holder Name | Date of Authorization |
|---|---|---|
| RR00139382 | Ramberg, Brandon K | 2018-01-09 |
| RR00140060 | Huenergardt, James | 2018-01-30 |
| RR00141631 | Smith, Derrek E | 2018-03-15 |
| RR00142015 | Maroney, Maxwell T | 2018-03-27 |
| RR00142638 | Reynolds, Christopher S | 2018-04-13 |
| RR00142642 | Reed, Timothy R | 2018-04-13 |
| RR00144837 | Keck, Dustin D | 2018-06-13 |
| RR00146053 | Rademacher, Duane J | 2018-07-18 |
| RR00146499 | Hundley, Ryan T | 2018-08-03 |
| RR00147098 | Benton, Cory C | 2018-08-21 |
| RR00147689 | Curry, Wesley R | 2018-09-06 |
| RR00149830 | Bacon, Bruce A | 2018-11-06 |
| RR00150404 | Linder, Hunter T | 2018-11-27 |
| RR00151241 | Duffy Jr, Michael R | 2018-12-21 |
| RR00152413 | Arfsten, Ronald L | 2019-02-08 |
| RR00154212 | Nicklas, Tamaron S | 2019-03-22 |
| RR00156422 | Grantham, Austin T | 2019-05-17 |
| RR00158646 | Sheets, Nathan A | 2019-07-16 |
| RR00162245 | R. de Castro Santos, Gustavo | 2019-10-24 |
| RR00163234 | Hugos, Bergan | 2019-11-23 |
| RR00164429 | Caines, Colin A | 2019-12-31 |
| RR00168596 | Higby 363, Eugene | 2020-06-05 |
| RR00169788 | Schmeis, Walter E | 2020-08-25 |
| RR00171245 | Martin, William C | 2020-12-01 |
| RR00171875 | Geczi, Kimberly L | 2021-01-12 |
| RR00172945 | Lee, Kenneth A | 2021-03-03 |
| RR00174105 | Wade, Cora E | 2021-04-07 |
| RR00175379 | George, Maura K | 2021-05-13 |
| RR00175530 | Brown, Troy D | 2021-05-15 |
| RR00178289 | Karpowich jr, John M | 2021-07-31 |
| RR00178995 | Fee, Eric J | 2021-08-17 |
| RR00179173 | Tornabene, Wyatt C | 2021-08-20 |
| RR00187764 | McLeod, Tyler J | 2022-03-22 |
| RR00192221 | Stewart, John R | 2022-06-22 |
| RR00193282 | hissem, paul m | 2022-07-16 |
| RR00193865 | Faragallah, Tyler B | 2022-07-28 |
| RR00196439 | Zadigan 241, Matthew | 2022-09-20 |
| RR00196968 | Jacques, Aaron J | 2022-09-30 |
| RR00197811 | Bentley, Crozman J | 2022-10-18 |
| RR00200214 | Hall, Brian C | 2022-12-07 |
| RR00202213 | Landon, Chase | 2023-01-24 |
| RR00203255 | Pikowski, Vicky | 2023-02-10 |
| RR00203752 | Orgill, Max A | 2023-02-22 |
| RR00204563 | Fortin, Matthew W | 2023-03-07 |
| RR00204827 | Haase, Tyler | 2023-03-13 |
| RR00205679 | Mitchell, Douglas E | 2023-03-28 |
