CallSource
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CallSource CallSource is a private company founded in 1991 or 1992 that specializes in call tracking, call processing, analytics, and performance management solutions primarily for automotive dealers, healthcare, and other businesses in the US and Can… read more ↓
Transfer network
How toll free numbers move between CallSource (OU) and other Resp Orgs, reconstructed from Somos registry snapshots. Larger nodes = more transfer volume; CallSource is highlighted. Open the full interactive map →
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- Website: https://www.callsource.com/ Domain since 1996 (29y)
At a glance
#111 of 206 oldest
Inventory by NPA
Click any NPA for total pool inventory across the industry.
By status
- WORKING 531,052, 98.6%
- TRANSIT 7,354, 1.4%
- RESERVED 8, 0.0%
Inventory age buckets
- 1–3 months 47, 0.0%
- 3–12 months 93,152, 15.6%
- 1–2 years 666, 0.1%
- 2–5 years 437,180, 73.4%
- 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
Show monthly numbers
| Month | Inventory | Acquired | Harvested | Lost | From spare | To spare |
|---|---|---|---|---|---|---|
| 2018-03 | 1,636,258 | 0 | 0 | 0 | 0 | 0 |
| 2018-06 | 1,915,140 | 280,340 | 8,698 | 1,458 | 241,590 | 0 |
| 2018-09 | 2,145,490 | 231,893 | 22 | 1,543 | 187,746 | 0 |
| 2018-10 | 2,145,359 | 90 | 0 | 221 | 6 | 0 |
| 2018-11 | 2,145,373 | 131 | 4 | 117 | 9 | 0 |
| 2018-12 | 2,145,089 | 327 | 3 | 611 | 14 | 0 |
| 2019-01 | 2,145,173 | 112 | 3 | 28 | 8 | 0 |
| 2019-02 | 2,195,239 | 50,241 | 3 | 175 | 48,386 | 0 |
| 2019-03 | 2,296,123 | 100,913 | 1 | 29 | 95,019 | 0 |
| 2019-04 | 2,346,085 | 50,044 | 0 | 82 | 39,465 | 0 |
| 2019-05 | 2,346,142 | 245 | 1 | 188 | 83 | 0 |
| 2019-06 | 2,345,989 | 109 | 1 | 262 | 21 | 0 |
| 2019-08 | 1,874,476 | 4,799 | 4 | 476,312 | 4,539 | 383,026 |
| 2019-09 | 1,954,480 | 131,336 | 2 | 51,332 | 130,870 | 1 |
| 2019-10 | 1,825,728 | 67 | 0 | 128,819 | 16 | 5 |
| 2019-11 | 1,528,478 | 247 | 2 | 297,497 | 10 | 33,030 |
| 2019-12 | 1,493,309 | 66 | 0 | 35,235 | 20 | 1 |
| 2020-01 | 1,438,797 | 584 | 1 | 55,096 | 16 | 6 |
| 2020-02 | 1,488,138 | 50,335 | 0 | 994 | 47,151 | 2 |
| 2020-03 | 1,487,737 | 292 | 1 | 693 | 32 | 13 |
| 2020-04 | 1,403,408 | 540 | 0 | 84,869 | 19 | 66 |
| 2020-05 | 1,403,361 | 120 | 3 | 167 | 22 | 8 |
| 2020-06 | 1,403,181 | 329 | 2 | 509 | 47 | 15 |
| 2020-07 | 1,302,439 | 34 | 1 | 100,776 | 23 | 93,949 |
| 2020-08 | 1,302,375 | 23 | 0 | 87 | 15 | 19 |
| 2020-09 | 1,302,506 | 208 | 0 | 77 | 36 | 7 |
| 2020-10 | 1,302,652 | 226 | 1 | 80 | 40 | 17 |
| 2020-11 | 1,302,778 | 341 | 3 | 215 | 49 | 31 |
| 2020-12 | 1,303,027 | 299 | 0 | 50 | 62 | 23 |
| 2021-01 | 1,254,601 | 2,370 | 0 | 50,796 | 46 | 47,835 |
| 2021-02 | 1,253,644 | 273 | 0 | 1,230 | 49 | 32 |
| 2021-03 | 1,253,759 | 156 | 0 | 41 | 56 | 16 |
| 2021-04 | 1,267,404 | 13,871 | 29 | 226 | 13,606 | 12 |
| 2021-05 | 1,272,040 | 4,720 | 79 | 84 | 3,494 | 6 |
| 2022-05 | 1,408,850 | 231,038 | 1,331 | 94,228 | 211,266 | 56,500 |
| 2022-06 | 1,351,335 | 476 | 2 | 57,991 | 458 | 783 |
| 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 |
| 2023-07 | 1,313,700 | 408,998 | 509 | 27,467 | 204,779 | 24,351 |
| 2023-08 | 850,329 | 25,202 | 101 | 488,573 | 22,462 | 208,490 |
| 2023-09 | 772,438 | 4,525 | 0 | 82,416 | 19 | 3 |
| 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 |
| 2024-04 | 578,761 | 69 | 0 | 57 | 21 | 3 |
| 2024-05 | 578,760 | 25 | 0 | 26 | 20 | 7 |
| 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 |
| 2026-05 | 604,812 | 18 | 0 | 50 | 18 | 0 |
| 2026-06 | 538,428 | 39 | 0 | 66,423 | 18 | 0 |
Flow patterns (42-month cumulative)
Inbound (numbers acquired)
| Direct transfer from another RespOrg | 1,144,980.0 |
| Harvested from disconnect pool | 162,093.0 |
| First assigned from spare pool | 4,152,420.0 |
| Reactivated own disconnects | 696.0 |
Outbound (numbers lost)
| Direct transfer to another RespOrg | 6,984,164.0 |
| Standard disconnect aging process (3+ months in DISC) | 0 |
| Abbreviated disconnect period (1–2 months in DISC) | 73,154 |
| Released directly to spare pool | 4,605,236.0 |
Of the 73,154 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)
| SO | 107,258.0 | Signal One |
| RS | 69,100.0 | AccessLine |
| GA | 43,977.0 | Comet Media |
| MY | 42,157.0 | Mayfair Communication (Primetel) |
| LQ | 14,961.0 | Inteliquent |
| TW | 13,081.0 | Twilio |
| JY | 10,840.0 | Bandwidth |
| QI | 9,244.0 | Telnyx |
| IU | 5,764.0 | Interactive RespOrg Management |
| JW | 4,826.0 | WireStar (Primetel) |
Top direct-transfer destinations (OUT of OU)
| GA | 679,237.0 | Comet Media |
| MY | 222,631.0 | Mayfair Communication (Primetel) |
| RS | 197,763.0 | AccessLine |
| SO | 177,601.0 | Signal One |
| GD | 139,129.0 | ANI Networks |
| MT | 62,392.0 | Toll Free Management |
| TW | 51,172.0 | Twilio |
| IU | 34,998.0 | Interactive RespOrg Management |
| FO | 30,911.0 | Flotrax (Primetel) |
| JY | 19,316.0 | Bandwidth |
Summary
They do just about everything related the Vanity Number business for their numbers and clients numbers.
About CallSource
CallSource is a private company founded in 1991 or 1992 that specializes in call tracking, call processing, analytics, and performance management solutions primarily for automotive dealers, healthcare, and other businesses in the US and Canada.[1][2][6] Headquartered at 5601 Lindero Canyon Rd Ste 210, Westlake Village, CA, it employs approximately 198 people and generates around $44.6 million in revenue.[2] No parent company or holding group is mentioned in available sources.[1][2]
Toll free / RespOrg activity: No information found on toll-free or RespOrg activities despite the provided code OUR01.
AI-generated summary (confidence: medium), last updated 2026-04-30. Verify against primary sources before quoting.
Top vanity holdings
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