CallTower AX
alias: formerly known as Appia Communications
- Website: https://www.calltower.com/ Domain since 2001 (25y)
At a glance
#112 of 201 oldest
Inventory by NPA
By status
- WORKING 23,117 · 99.9%
- RESERVED 18 · 0.1%
- TRANSIT 3 · 0.0%
Inventory age buckets
- 1–3 months 677 · 2.7%
- 3–12 months 4,605 · 18.2%
- 1–2 years 4,377 · 17.3%
- 2–5 years 9,469 · 37.5%
- 5+ years 3,989 · 15.8%
Ages are measured from each number's last change in the Somos registry — that's the most recent activation, transfer, or status move. Not necessarily the date this RespOrg originally acquired it.
Request a manual history review of a specific toll-free number →
Trajectory
Show monthly numbers
| Month | Inventory | Acquired | Harvested | Lost | From spare | To spare |
|---|---|---|---|---|---|---|
| 2022-06 | 8,699 | 0 | 0 | 0 | 0 | 0 |
| 2022-07 | 8,804 | 149 | 0 | 44 | 17 | 1 |
| 2022-08 | 9,301 | 534 | 0 | 37 | 7 | 10 |
| 2022-09 | 9,450 | 183 | 0 | 34 | 8 | 0 |
| 2022-10 | 9,820 | 415 | 0 | 45 | 38 | 0 |
| 2022-11 | 10,016 | 225 | 0 | 29 | 37 | 0 |
| 2022-12 | 10,252 | 268 | 1 | 32 | 25 | 0 |
| 2023-01 | 10,418 | 194 | 0 | 28 | 23 | 0 |
| 2023-02 | 10,587 | 187 | 0 | 18 | 69 | 0 |
| 2023-03 | 10,733 | 179 | 0 | 33 | 20 | 0 |
| 2023-04 | 11,097 | 438 | 0 | 74 | 23 | 48 |
| 2023-05 | 11,259 | 170 | 0 | 8 | 14 | 1 |
| 2023-06 | 13,217 | 1,983 | 0 | 25 | 11 | 2 |
| 2023-09 | 13,970 | 918 | 0 | 165 | 74 | 2 |
| 2023-10 | 14,110 | 168 | 0 | 28 | 11 | 1 |
| 2023-11 | 14,787 | 735 | 0 | 58 | 8 | 1 |
| 2023-12 | 17,031 | 3,329 | 3 | 1,085 | 305 | 0 |
| 2024-02 | 14,710 | 510 | 0 | 2,831 | 0 | 290 |
| 2024-03 | 14,722 | 145 | 0 | 133 | 35 | 0 |
| 2024-05 | 14,982 | 343 | 0 | 83 | 37 | 0 |
| 2024-06 | 15,111 | 156 | 0 | 27 | 10 | 0 |
| 2024-07 | 15,605 | 524 | 0 | 30 | 19 | 0 |
| 2024-08 | 15,726 | 151 | 1 | 30 | 12 | 0 |
| 2024-09 | 16,076 | 372 | 0 | 22 | 45 | 0 |
| 2024-10 | 16,393 | 404 | 0 | 87 | 11 | 0 |
| 2024-11 | 16,501 | 179 | 0 | 71 | 15 | 0 |
| 2024-12 | 16,846 | 370 | 0 | 25 | 41 | 0 |
| 2025-01 | 17,190 | 399 | 1 | 55 | 133 | 0 |
| 2025-02 | 17,322 | 183 | 0 | 51 | 14 | 0 |
| 2025-03 | 17,322 | 0 | 0 | 0 | 0 | 0 |
| 2025-04 | 18,573 | 1,307 | 1 | 56 | 43 | 0 |
| 2025-05 | 18,891 | 356 | 0 | 38 | 18 | 0 |
| 2025-06 | 19,026 | 210 | 0 | 75 | 23 | 0 |
| 2025-07 | 19,205 | 226 | 1 | 47 | 68 | 0 |
| 2025-08 | 19,659 | 557 | 2 | 103 | 17 | 0 |
| 2025-09 | 19,821 | 226 | 0 | 64 | 22 | 0 |
| 2025-10 | 20,196 | 409 | 1 | 34 | 40 | 0 |
| 2025-11 | 20,611 | 441 | 0 | 26 | 14 | 0 |
| 2025-12 | 20,744 | 141 | 2 | 8 | 9 | 0 |
| 2026-01 | 22,464 | 1,782 | 0 | 62 | 29 | 0 |
| 2026-02 | 22,923 | 484 | 4 | 25 | 27 | 0 |
| 2026-03 | 23,077 | 187 | 0 | 33 | 9 | 0 |
| 2026-04 | 23,152 | 357 | 1 | 282 | 33 | 0 |
Flow patterns (42-month cumulative)
Inbound (numbers acquired)
| Direct transfer from another RespOrg | 57,186.0 |
| Harvested from disconnect pool | 54.0 |
| First assigned from spare pool | 4,242.0 |
| Reactivated own disconnects | 0.0 |
Outbound (numbers lost)
| Direct transfer to another RespOrg | 16,998.0 |
| Standard disconnect aging process (3+ months in DISC) | 7 |
| Abbreviated disconnect period (1–2 months in DISC) | 17 |
| Released directly to spare pool | 1,068.0 |
Of the 24 disconnect episodes this RespOrg has sent through aging, 71% were abbreviated (1–2 snapshots in DISC status). That's a strong early-disconnector signal — this RespOrg routinely releases numbers before the full 3–4 month aging window. Worth checking daily for vanity drops.
Top vanity holdings
Summary
CallTower provides cloud-based, Unified Communications, Contact Center and Collaboration solutions since 2002.
Contact-form message
with a customer of CallTower fka Appia