XO Communications IV
alias: Part of Verizon now
At a glance
#32 of 201 oldest
Inventory by NPA
Click any NPA for total pool inventory across the industry.
By status
- WORKING 6,846 · 100.0%
Inventory age buckets
- 5+ years 6,846 · 96.0%
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.
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Trajectory
Show monthly numbers
| Month | Inventory | Acquired | Harvested | Lost | From spare | To spare |
|---|---|---|---|---|---|---|
| 2018-03 | 35,993 | 0 | 0 | 0 | 0 | 0 |
| 2018-06 | 31,578 | 340 | 0 | 4,755 | 306 | 1 |
| 2018-09 | 28,395 | 349 | 0 | 3,532 | 202 | 0 |
| 2018-10 | 28,481 | 134 | 0 | 48 | 134 | 0 |
| 2018-11 | 28,496 | 54 | 0 | 39 | 50 | 0 |
| 2018-12 | 28,475 | 53 | 0 | 74 | 52 | 0 |
| 2019-01 | 28,422 | 1 | 0 | 54 | 0 | 0 |
| 2019-02 | 28,421 | 34 | 0 | 35 | 29 | 0 |
| 2019-03 | 28,325 | 0 | 0 | 96 | 0 | 0 |
| 2019-04 | 28,262 | 2 | 0 | 65 | 0 | 0 |
| 2019-05 | 28,196 | 0 | 0 | 66 | 0 | 0 |
| 2019-06 | 26,855 | 8 | 0 | 1,349 | 0 | 0 |
| 2019-08 | 24,110 | 53 | 0 | 2,798 | 16 | 2,700 |
| 2019-09 | 26,474 | 2,655 | 0 | 291 | 2,653 | 0 |
| 2019-10 | 26,059 | 6 | 0 | 421 | 0 | 0 |
| 2019-11 | 25,895 | 15 | 0 | 179 | 1 | 0 |
| 2019-12 | 25,668 | 2 | 0 | 229 | 1 | 0 |
| 2020-01 | 24,596 | 44 | 0 | 1,116 | 0 | 0 |
| 2020-02 | 22,301 | 1 | 0 | 2,296 | 0 | 0 |
| 2020-03 | 22,255 | 5 | 0 | 51 | 0 | 0 |
| 2020-04 | 21,640 | 0 | 0 | 615 | 0 | 0 |
| 2020-05 | 18,955 | 7 | 0 | 2,692 | 0 | 0 |
| 2020-06 | 18,938 | 7 | 0 | 24 | 0 | 0 |
| 2020-07 | 18,215 | 7 | 0 | 730 | 0 | 0 |
| 2020-08 | 18,215 | 0 | 0 | 0 | 0 | 0 |
| 2020-09 | 18,147 | 5 | 0 | 73 | 0 | 0 |
| 2020-10 | 17,930 | 1 | 0 | 218 | 1 | 0 |
| 2020-11 | 16,673 | 0 | 0 | 1,257 | 0 | 0 |
| 2020-12 | 16,346 | 1 | 0 | 328 | 0 | 0 |
| 2021-01 | 16,269 | 0 | 0 | 77 | 0 | 0 |
| 2021-02 | 16,215 | 1 | 0 | 55 | 1 | 0 |
| 2021-03 | 16,020 | 0 | 0 | 195 | 0 | 0 |
| 2021-04 | 15,886 | 0 | 0 | 134 | 0 | 0 |
| 2021-05 | 15,329 | 0 | 0 | 557 | 0 | 0 |
| 2022-05 | 9,724 | 2 | 0 | 5,607 | 2 | 1,111 |
| 2022-06 | 9,721 | 0 | 0 | 3 | 0 | 0 |
| 2022-07 | 8,634 | 0 | 0 | 1,087 | 0 | 0 |
| 2022-08 | 8,634 | 0 | 0 | 0 | 0 | 0 |
| 2022-09 | 8,634 | 0 | 0 | 0 | 0 | 0 |
| 2022-10 | 8,634 | 0 | 0 | 0 | 0 | 0 |
| 2022-11 | 8,628 | 0 | 0 | 6 | 0 | 0 |
| 2022-12 | 8,625 | 0 | 0 | 3 | 0 | 0 |
| 2023-01 | 8,625 | 0 | 0 | 0 | 0 | 0 |
| 2023-02 | 8,625 | 0 | 0 | 0 | 0 | 0 |
| 2023-03 | 8,625 | 0 | 0 | 0 | 0 | 0 |
| 2023-04 | 8,625 | 0 | 0 | 0 | 0 | 0 |
| 2023-05 | 8,627 | 2 | 0 | 0 | 0 | 0 |
| 2023-06 | 8,614 | 0 | 0 | 13 | 0 | 0 |
| 2023-07 | 8,634 | 22 | 0 | 2 | 0 | 0 |
| 2023-08 | 8,614 | 2 | 0 | 22 | 0 | 0 |
| 2023-09 | 8,614 | 0 | 0 | 0 | 0 | 0 |
| 2023-10 | 8,614 | 0 | 0 | 0 | 0 | 0 |
| 2023-11 | 8,614 | 0 | 0 | 0 | 0 | 0 |
| 2023-12 | 8,588 | 0 | 0 | 26 | 0 | 0 |
| 2024-02 | 8,614 | 26 | 0 | 0 | 0 | 0 |
| 2024-03 | 8,613 | 0 | 0 | 1 | 0 | 0 |
| 2024-04 | 8,613 | 0 | 0 | 0 | 0 | 0 |
| 2024-05 | 8,613 | 0 | 0 | 0 | 0 | 0 |
| 2024-06 | 8,613 | 0 | 0 | 0 | 0 | 0 |
| 2024-07 | 8,613 | 0 | 0 | 0 | 0 | 0 |
| 2024-08 | 8,612 | 0 | 0 | 1 | 0 | 0 |
| 2024-09 | 8,610 | 0 | 0 | 2 | 0 | 0 |
| 2024-10 | 8,603 | 0 | 0 | 7 | 0 | 0 |
| 2024-11 | 8,595 | 0 | 0 | 8 | 0 | 0 |
| 2024-12 | 8,589 | 0 | 0 | 6 | 0 | 0 |
| 2025-01 | 8,554 | 0 | 0 | 35 | 0 | 0 |
| 2025-02 | 8,536 | 0 | 0 | 18 | 0 | 0 |
| 2025-03 | 8,536 | 0 | 0 | 0 | 0 | 0 |
| 2025-04 | 8,520 | 0 | 0 | 16 | 0 | 0 |
| 2025-05 | 8,520 | 0 | 0 | 0 | 0 | 0 |
| 2025-06 | 8,480 | 0 | 0 | 40 | 0 | 0 |
| 2025-07 | 8,421 | 0 | 0 | 59 | 0 | 0 |
| 2025-08 | 8,353 | 0 | 0 | 68 | 0 | 0 |
| 2025-09 | 8,352 | 0 | 0 | 1 | 0 | 0 |
| 2025-10 | 8,352 | 0 | 0 | 0 | 0 | 0 |
| 2025-11 | 8,324 | 0 | 0 | 28 | 0 | 0 |
| 2025-12 | 8,323 | 0 | 0 | 1 | 0 | 0 |
| 2026-01 | 6,860 | 0 | 0 | 1,463 | 0 | 0 |
| 2026-02 | 6,860 | 0 | 0 | 0 | 0 | 0 |
| 2026-03 | 6,860 | 0 | 0 | 0 | 0 | 0 |
| 2026-04 | 6,860 | 0 | 0 | 0 | 0 | 0 |
Flow patterns (42-month cumulative)
Inbound (numbers acquired)
| Direct transfer from another RespOrg | 56.0 |
| Harvested from disconnect pool | 0.0 |
| First assigned from spare pool | 0.0 |
| Reactivated own disconnects | 0.0 |
Outbound (numbers lost)
| Direct transfer to another RespOrg | 2,888.0 |
| Standard disconnect aging process (3+ months in DISC) | 1 |
| Abbreviated disconnect period (1–2 months in DISC) | 1,630 |
| Released directly to spare pool | 0.0 |
Of the 1,631 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 vanity holdings
Summary
This is the Telco Verizon, not the Verizon Cellular.
About XO Communications
XO Communications was a telecommunications company providing IP network services, Ethernet networks, cloud connectivity, unified communications, voice, Internet access, and managed services primarily to small and medium-sized enterprises. It was acquired by Verizon Communications in 2017 for $1.8 billion, with all services migrated to Verizon by summer 2020; the XO brand now operates under Verizon Business. Founded as Allegiance Telecom (exact year not specified in sources), it was headquartered in Herndon, VA prior to acquisition (user-noted Beaverton, OR unconfirmed), and is private as a former subsidiary of public Verizon.
Affiliations: Subsidiary of Verizon Communications; previously known as Nextlink Communications, Concentric Network Corporation, and Allegiance Telecom.
Toll-free / RespOrg activity: Verizon's XO page mentions toll-free numbers as a quick link service post-migration, but no specific toll-free or RespOrg news found.
AI-generated summary (confidence: medium), last updated 2026-04-30. Verify against primary sources before quoting.
Contact-form message
with a customer of XO (Verizon)