Significant events for area code 972
| Date |
Details |
| 1995 | Area code 214 was split with central Dallas staying with 214 and creating 972 for the rest (a "doughnut" around 214 ) |
| 1999 | Area codes 214 and 972 were converted to a single area, effectively overlaying each other. Area code 469 was overlaid on 214 and 972 |