CallSource OU
- Website: https://www.callsource.com/ Domain since 1996 (29y)
At a glance
Active numbers
604,844
#17 of 481
Change over 4 years
-746,491
-55.2% · #154 of 156
Opportunism Index
19.27%
#45 of 228
Vanity matches
17.4%
#116 of 201
Median inventory age
36 mo
3.0 years since last change
#100 of 201 oldest
#100 of 201 oldest
Sub-codes in use
22
OUR01, OUR99, OUR12, OURGI, OUR03, OUR07 +16
Inventory by NPA
By status
- WORKING 604,767 · 100.0%
- TRANSIT 51 · 0.0%
- RESERVED 12 · 0.0%
Inventory age buckets
- 1–3 months 20,021 · 3.1%
- 3–12 months 73,315 · 11.4%
- 1–2 years 2,327 · 0.4%
- 2–5 years 509,097 · 79.2%
- 5+ years 7 · 0.0%
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
Total active inventory
Numbers harvested from disconnect pool that month
Show monthly numbers
| Month | Inventory | Acquired | Harvested | Lost | From spare | To spare |
|---|---|---|---|---|---|---|
| 2022-06 | 1,351,335 | 0 | 0 | 0 | 0 | 0 |
| 2022-07 | 1,313,700 | 58 | 0 | 37,693 | 46 | 1,337 |
| 2022-08 | 1,312,649 | 136 | 0 | 1,187 | 38 | 15 |
| 2022-09 | 1,306,348 | 35 | 0 | 6,336 | 30 | 8 |
| 2022-10 | 1,289,749 | 1,264 | 0 | 17,863 | 1,253 | 12,405 |
| 2022-11 | 1,059,094 | 679 | 0 | 231,334 | 665 | 130,543 |
| 2022-12 | 1,057,959 | 71 | 0 | 1,206 | 51 | 9 |
| 2023-01 | 976,127 | 21 | 1 | 81,853 | 13 | 72,692 |
| 2023-02 | 919,311 | 78 | 0 | 56,894 | 71 | 7 |
| 2023-03 | 919,161 | 16 | 0 | 166 | 10 | 10 |
| 2023-04 | 919,171 | 75 | 0 | 65 | 30 | 5 |
| 2023-05 | 944,283 | 25,309 | 0 | 197 | 25,269 | 13 |
| 2023-06 | 932,169 | 360 | 0 | 12,474 | 118 | 11,168 |
| 2023-09 | 772,438 | 409 | 0 | 160,140 | 39 | 11,082 |
| 2023-10 | 718,434 | 85 | 0 | 54,089 | 16 | 48,841 |
| 2023-11 | 702,683 | 25 | 0 | 15,776 | 23 | 10,539 |
| 2023-12 | 529,032 | 607 | 3 | 174,258 | 124 | 15,335 |
| 2024-02 | 622,292 | 93,830 | 42,786 | 570 | 5,081 | 108 |
| 2024-03 | 578,749 | 37 | 0 | 43,580 | 36 | 7 |
| 2024-05 | 578,760 | 93 | 0 | 82 | 39 | 9 |
| 2024-06 | 578,677 | 40 | 0 | 123 | 16 | 2 |
| 2024-07 | 578,692 | 38 | 0 | 23 | 19 | 4 |
| 2024-08 | 578,823 | 151 | 0 | 20 | 16 | 0 |
| 2024-09 | 528,928 | 101 | 0 | 49,996 | 11 | 0 |
| 2024-10 | 529,061 | 193 | 0 | 60 | 19 | 0 |
| 2024-11 | 529,040 | 33 | 0 | 54 | 31 | 0 |
| 2024-12 | 529,051 | 38 | 0 | 27 | 36 | 4 |
| 2025-01 | 528,967 | 17 | 0 | 101 | 13 | 0 |
| 2025-02 | 528,969 | 19 | 0 | 17 | 16 | 0 |
| 2025-03 | 528,969 | 0 | 0 | 0 | 0 | 0 |
| 2025-04 | 529,069 | 145 | 0 | 45 | 31 | 0 |
| 2025-05 | 529,003 | 27 | 1 | 93 | 26 | 0 |
| 2025-06 | 529,026 | 33 | 0 | 10 | 32 | 0 |
| 2025-07 | 529,037 | 20 | 1 | 9 | 18 | 0 |
| 2025-08 | 584,074 | 55,050 | 431 | 13 | 54,398 | 0 |
| 2025-09 | 584,076 | 23 | 0 | 21 | 22 | 0 |
| 2025-10 | 583,942 | 17 | 0 | 151 | 16 | 0 |
| 2025-11 | 583,966 | 33 | 0 | 9 | 26 | 0 |
| 2025-12 | 583,983 | 37 | 0 | 20 | 34 | 0 |
| 2026-01 | 559,963 | 12 | 0 | 24,032 | 11 | 0 |
| 2026-02 | 584,932 | 25,014 | 0 | 45 | 24,984 | 0 |
| 2026-03 | 584,912 | 13 | 0 | 33 | 9 | 0 |
| 2026-04 | 604,844 | 20,020 | 1 | 88 | 19,856 | 0 |
Flow patterns (42-month cumulative)
Inbound (numbers acquired)
| Direct transfer from another RespOrg | 145,338.0 |
| Harvested from disconnect pool | 129,672.0 |
| First assigned from spare pool | 397,776.0 |
| Reactivated own disconnects | 0.0 |
Outbound (numbers lost)
| Direct transfer to another RespOrg | 1,969,257.0 |
| Standard disconnect aging process (3+ months in DISC) | 0 |
| Abbreviated disconnect period (1–2 months in DISC) | 4,749 |
| Released directly to spare pool | 942,429.0 |
Of the 4,749 disconnect episodes this RespOrg has sent through aging, 100% 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 direct-transfer sources (INto OU)
| MY | 40,820.0 | Mayfair Communication (Primetel) |
| JW | 1,983.0 | WireStar (Primetel) |
| MT | 1,477.0 | Toll Free Management |
| JY | 547.0 | Bandwidth |
| RS | 431.0 | AccessLine |
| HL | 355.0 | Unilink Telcom (Primetel) |
| DL | 286.0 | BH Telecom (Kall8) |
| SO | 230.0 | Signal One |
| FZ | 227.0 | VBI |
| VZ | 211.0 | Verizon Business (Verizon) |
Top direct-transfer destinations (OUT of OU)
| MY | 182,316.0 | Mayfair Communication (Primetel) |
| GD | 136,899.0 | ANI Networks |
| RS | 127,869.0 | AccessLine |
| SO | 82,811.0 | Signal One |
| MT | 30,087.0 | Toll Free Management |
| IU | 22,276.0 | Interactive RespOrg Management |
| FO | 21,772.0 | Flotrax (Primetel) |
| TW | 16,086.0 | Twilio |
| JW | 9,732.0 | WireStar (Primetel) |
| JY | 3,428.0 | Bandwidth |
Top vanity holdings
877MEDICAL
888SOFTWARE
866AMERICA
866AMERICA
833EXPRESS
800ACADEMY
833ACADEMY
855ACADEMY
833MANAGEMENT
877MANAGEMENT
833DIGITAL
888DIGITAL
833FITNESS
833STORAGE
833ADVERTI
833ADVERTI
855BAPTIST
866AMERICA
855SEMINAR
877SEMINAR
844PURPOSES
877PURPOSES
888THERAPY
800MATERIA
800MAVERIC
844PRODUCTS
844JACKETS
833DAYCARE
833DAYBASE
877RENTALS
833RENTALS
833MASSAGE
833DAYCARE
833GENERAL
833ADVERTI
888JOHNSON
800CONSULTING
833TRAINING
833ADVISOR
844CABINET
844CABINET
855WASHING
833CLEANDR
833CLEANER
800MATERIA
855SUNSING
855PUMPING
866COUNSEL
866COUNSEL
844PLASTIC
844MINERAL
844MINERAL
888UNIFORM
888UNIFORM
855HOODIES
855GOODIES
833DIAMOND
855EXHIBIT
877EXHIBIT
877EXHIBIT
Summary
They do just about everything related the Vanity Number business for their numbers and clients numbers.
Contact-form message
- Request a Quote with CallSource