| Time (Eastern US) | Author | Comment (most recent last) | Actions |
| 2012-01-15 11:26:35 | mazzonem002 | Successful Volunteer Test (Windows) - 13 Seconds | Reply to |
| 2012-01-15 11:26:46 | mazzonem002 | Successful Volunteer Test (Windows) - 24 Seconds | Reply to |
| 2013-07-26 00:00:00 | FCC App# 1534881 | License Renewed | Reply to |
| 2014-07-23 03:35:21 | editor | Updated Station URL to http://maximadallas.univision.com/ | Reply to |
| 2014-07-23 03:35:52 | editor | Station Format updated from Mexican Regional to Spanish CHR/Latino | Reply to |
| 2014-07-23 03:35:58 | editor | Station Web Site Reviewed | Reply to |
| 2015-01-12 22:21:36 | janderson021 | Station Web Site Reviewed | Reply to |
| 2015-02-19 23:28:24 | editor | Updated Station URL to http://991dallas.univision.com/ | Reply to |
| 2015-06-09 00:02:42 | editor | Reset Streaming URL | Reply to |
| 2015-06-09 00:05:23 | editor | Changed streaming URL to http://v6.player.abacast.net/2301 | Reply to |
| 2015-06-09 00:05:25 | editor | Streaming marked as Working | Reply to |
| 2015-06-09 00:05:28 | editor | Station Web Site Reviewed | Reply to |
| 2015-08-19 20:51:16 | charlottenc | Station Web Site Reviewed | Reply to |
| 2015-09-30 15:40:19 | charlottenc | Station Homepage Title changed from inicio - Dallas - Inicio - Dallas - Univision to Dallas, TX - Ciudad Local, Tiempo, Trafico, Noticias y Entretenimiento - Dallas - Univision | Reply to |
| 2015-09-30 15:41:41 | charlottenc | Station Homepage Title changed from inicio - Dallas - Inicio - Dallas - Univision to Dallas, TX - Ciudad Local, Tiempo, Trafico, Noticias y Entretenimiento - Dallas - Univision | Reply to |
| 2015-09-30 15:45:19 | charlottenc | Station Web Site Reviewed | Reply to |
| 2015-11-21 15:16:45 | editor | Updated Station URL to http://maximadallas.univision.com/ | Reply to |
| 2015-11-21 15:17:24 | editor | Updated Station URL to http://991dallas.univision.com/ | Reply to |
| 2015-12-20 08:09:28 | editor | Station Web Site Reviewed | Reply to |
| 2016-11-08 10:59:47 | JayMar2 | Station Homepage Title changed from 107.9 FM Dallas, TX - Radio Estacion KFZO - Univision to La Jefa 99.1FM Dallas - Univision | Reply to |
| 2017-03-02 00:00:00 | FCC App# 1752726 | FCC received request to transfer license from KHCK-FM LICENSE CORP. to UNIVISION RADIO SAN FRANCISCO, INC. | Reply to |
| 2017-03-13 00:00:00 | FCC App# 1752726 | FCC approved transfer of license from KHCK-FM LICENSE CORP. to UNIVISION RADIO SAN FRANCISCO, INC. | Reply to |
| 2017-06-07 00:00:00 | FCC App# 1758461 | FCC was notified license transfer is complete | Reply to |
| 2017-06-08 06:42:25 | | Licensee changed from KHCK-FM LICENSE CORP. to UNIVISION RADIO SAN FRANCISCO, INC. | Reply to |
| 2017-06-08 06:42:25 | | Licensee changed from KHCK-FM LICENSE CORP. to UNIVISION RADIO SAN FRANCISCO, INC. | Reply to |
| 2018-04-15 23:34:17 | editor | Station Homepage Title changed from KFZO FM/HD to Zona MX 99.1FM Dallas - Univision | Reply to |
| 2018-12-27 11:48:32 | editor | Station Web Site Reviewed | Reply to |
| 2019-07-09 01:20:01 | editor | Station Web Site Reviewed | Reply to |
| 2020-10-07 02:44:10 | editor | Station Homepage Title changed from Zona MX 99.1FM Dallas, TX - Radio Estacion KFZO | Univision to KFZO FM/HD | Reply to |
| 2024-03-21 21:36:35 | editor | Station Web Site Reviewed | Reply to |
