| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (515) 978-20** | (515) 978-2020 - (515) 978-2099 | 13 |
| (515) 978-21** | (515) 978-2119 - (515) 978-2189 | 19 |
| (515) 978-22** | (515) 978-2203 - (515) 978-2282 | 11 |
| (515) 978-23** | (515) 978-2309 - (515) 978-2395 | 8 |
| (515) 978-24** | (515) 978-2400 - (515) 978-2428 | 5 |
| (515) 978-25** | (515) 978-2517 - (515) 978-2576 | 3 |
| (515) 978-26** | (515) 978-2607 - (515) 978-2686 | 7 |
| (515) 978-28** | (515) 978-2811 - (515) 978-2897 | 10 |
| (515) 978-29** | (515) 978-2917 - (515) 978-2988 | 9 |