T-Mobile website screenshot
Website · visit · full size
Based in Bellevue, WA
Based in Bellevue, WA · street view · full size
Based in Bellevue, WA
Based in Bellevue, WA · satellite · full size

At a glance

Active numbers
2,966
#228 of 481
Change over 4 years
+871
+41.6%
Opportunism Index
0.63%
#129 of 228
Vanity matches
20.9%
Median inventory age
69 mo
5.8 years since last change
Sub-codes in use
1
TMB01

Inventory by NPA

Click any NPA for total pool inventory across the industry.

By status

  • WORKING 2,950 · 99.9%
  • DISCONN 2 · 0.1%

Inventory age buckets

  • 1–3 months 19 · 0.6%
  • 3–12 months 347 · 11.0%
  • 1–2 years 256 · 8.1%
  • 2–5 years 804 · 25.4%
  • 5+ years 1,524 · 48.1%

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
3K2K2K80202018-032022-112026-04
Show monthly numbers
MonthInventoryAcquiredHarvestedLostFrom spareTo spare
2018-03 2,095 0 0 0 0 0
2018-06 2,104 14 0 5 14 4
2018-09 2,181 106 0 29 1 12
2018-10 2,142 2 0 41 0 0
2018-11 2,108 0 0 34 0 0
2018-12 2,068 1 0 41 1 0
2019-01 1,914 0 0 154 0 0
2019-02 1,964 50 0 0 50 0
2019-03 1,964 0 0 0 0 0
2019-04 1,970 6 0 0 6 0
2019-05 1,998 28 0 0 28 0
2019-06 2,012 15 0 1 15 1
2019-08 1,580 21 0 453 20 170
2019-09 1,731 151 0 0 151 0
2019-10 1,734 3 0 0 3 0
2019-11 1,737 3 0 0 2 0
2019-12 1,736 0 0 1 0 1
2020-01 1,736 0 0 0 0 0
2020-02 1,736 0 0 0 0 0
2020-03 1,732 0 0 4 0 0
2020-04 1,732 0 0 0 0 0
2020-05 1,733 1 0 0 0 0
2020-06 1,748 15 0 0 1 0
2020-07 1,750 2 0 0 2 0
2020-08 1,768 18 0 0 13 0
2020-09 1,767 0 0 1 0 1
2020-10 1,767 0 0 0 0 0
2020-11 1,770 3 0 0 0 0
2020-12 1,807 40 0 3 29 0
2021-01 1,787 0 0 20 0 10
2021-02 1,787 0 0 0 0 0
2021-03 1,787 0 0 0 0 0
2021-04 1,783 0 0 4 0 0
2021-05 1,803 20 0 0 20 0
2022-05 2,031 240 0 12 89 6
2022-06 2,049 31 2 13 23 1
2022-07 2,037 6 0 18 6 8
2022-08 2,029 6 0 14 6 0
2022-09 2,026 6 0 9 5 1
2022-10 2,042 18 0 2 16 1
2022-11 2,071 31 0 2 0 0
2022-12 2,067 16 0 20 15 10
2023-01 2,067 0 0 0 0 0
2023-02 2,280 213 0 0 210 0
2023-03 2,338 58 0 0 57 0
2023-04 2,345 7 0 0 1 0
2023-05 2,319 16 0 42 16 41
2023-06 2,544 228 0 3 227 0
2023-07 2,037 37 3 544 13 498
2023-08 2,535 572 2 74 510 12
2023-09 2,566 33 0 2 15 0
2023-10 3,117 707 0 156 0 0
2023-11 3,211 94 0 0 64 0
2023-12 2,487 110 0 834 70 222
2024-02 2,975 579 8 91 91 67
2024-03 2,966 5 0 14 5 1
2024-04 2,968 5 0 3 5 0
2024-05 2,893 67 0 142 54 0
2024-06 2,846 1 0 48 0 0
2024-07 2,842 12 0 16 12 0
2024-08 2,805 1 0 38 1 0
2024-09 2,805 0 0 0 0 0
2024-10 2,753 0 0 52 0 0
2024-11 2,718 0 0 35 0 0
2024-12 2,536 0 0 182 0 0
2025-01 2,507 20 2 49 18 0
2025-02 2,508 2 0 1 2 0
2025-03 2,508 0 0 0 0 0
2025-04 2,650 143 2 1 123 0
2025-05 2,686 36 0 0 36 0
2025-06 2,686 0 0 0 0 0
2025-07 2,688 7 0 5 6 0
2025-08 2,841 153 6 0 146 0
2025-09 2,839 3 0 5 0 0
2025-10 2,857 30 1 12 29 0
2025-11 2,946 126 0 37 120 0
2025-12 2,946 0 0 0 0 0
2026-01 2,952 6 0 0 1 0
2026-02 2,963 14 0 3 0 0
2026-03 2,963 0 0 0 0 0
2026-04 2,966 14 0 11 13 0

Flow patterns (42-month cumulative)

Inbound (numbers acquired)

Direct transfer from another RespOrg4,200.0
Harvested from disconnect pool57.0
First assigned from spare pool4,146.0
Reactivated own disconnects9.0

Outbound (numbers lost)

Direct transfer to another RespOrg2,348.0
Standard disconnect aging process (3+ months in DISC)681
Abbreviated disconnect period (1–2 months in DISC)489
Released directly to spare pool1,452.0

Of the 1,170 disconnect episodes this RespOrg has sent through aging, 42% were abbreviated (1–2 snapshots in DISC status).

Top direct-transfer sources (INto TM)

SP786.0Sprint (T-Mobile)
GA216.0Comet Media
IU47.0Interactive RespOrg Management
MT43.0Toll Free Management
SO42.0Signal One
ZX38.0Haven Partners (CHP)
YV31.0Invoca
QP30.0Progrexion
AU26.0ATL Communications (ATLC)
KS23.0Lumen Technologies (Lumen)

Top direct-transfer destinations (OUT of TM)

GA215.0Comet Media
SO51.0Signal One
MT50.0Toll Free Management
AU50.0ATL Communications (ATLC)
IU50.0Interactive RespOrg Management
ZX41.0Haven Partners (CHP)
YV18.0Invoca
MY15.0Mayfair Communication (Primetel)
JY10.0Bandwidth
CB10.0Crossbow Telecom (Primetel)

Top vanity holdings

Summary

T-Mobile is one of the big cellular services in the US.

About T-Mobile

T-Mobile US, Inc. is a wireless network operator headquartered in Bellevue, Washington, and the second-largest wireless carrier in the United States with 140 million subscribers as of September 2025[1]. The company is a subsidiary of German telecommunications company Deutsche Telekom and operates under the T-Mobile and Metro by T-Mobile brand names, providing voice, messaging, video calling, and data services[3][4]. T-Mobile was founded in 1999 as a holding company by Deutsche Telekom for its mobile communications subsidiaries[4], is publicly traded, and reported annual revenues of $81.4 billion in 2024[3].

Affiliations: T-Mobile US is a subsidiary of Deutsche Telekom AG, a German telecommunications company that is its majority shareholder[1][3]. The company operates under the T-Mobile and Metro by T-Mobile brand names[3][4].

Toll-free / RespOrg activity: No toll-free or RespOrg-specific activity found in available search results.

AI-generated summary (confidence: high), last updated 2026-04-30. Verify against primary sources before quoting.

Recent news (1)

  • T-Mobile Acquires UScellular Wireless Operations 2025-08

    T-Mobile completed the acquisition of the wireless operations of UScellular, expanding its subscriber base and network footprint in the United States. The acquisition is expected to strengthen T-Mobile's position as a major wireless provider in the country.

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