Lumen Technologies UL

alias: Century link

Large Telcom Group: Lumen

Lumen Technologies website screenshot
Website · visit · full size
Based in Minneaopolis, MN
Based in Minneaopolis, MN · satellite · full size

At a glance

Active numbers
15,484
#138 of 481
Change over 4 years
-19,830
-56.2% · #99 of 156
Opportunism Index
0.23%
#178 of 228
Vanity matches
17.3%
#118 of 201
Median inventory age
130 mo
10.8 years since last change
#18 of 201 oldest
Sub-codes in use
3
ULD99, ULD02, ULD01

Inventory by NPA

Click any NPA for total pool inventory across the industry.

By status

  • WORKING 15,470 · 100.0%

Inventory age buckets

  • 3–12 months 165 · 1.0%
  • 1–2 years 37 · 0.2%
  • 2–5 years 5,750 · 35.0%
  • 5+ years 9,518 · 57.9%

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
35K26K18K9K02018-032022-112026-04
Show monthly numbers
MonthInventoryAcquiredHarvestedLostFrom spareTo spare
2018-03 35,314 0 0 0 0 0
2018-06 34,538 315 0 1,091 224 218
2018-09 33,625 130 4 1,043 68 95
2018-10 33,282 39 1 382 16 8
2018-11 32,673 69 0 678 50 15
2018-12 32,472 66 1 267 51 5
2019-01 31,551 39 1 960 21 9
2019-02 31,172 36 1 415 25 8
2019-03 30,717 27 0 482 15 9
2019-04 30,334 42 0 425 28 9
2019-05 30,125 42 0 251 32 1
2019-06 29,796 71 2 400 58 3
2019-08 25,997 63 1 3,862 37 2,722
2019-09 28,248 2,503 0 252 2,498 8
2019-10 27,895 20 0 373 11 24
2019-11 27,696 72 1 271 12 6
2019-12 27,506 16 1 206 6 3
2020-01 27,253 10 0 263 6 4
2020-02 27,044 16 0 225 11 0
2020-03 26,817 25 0 252 14 1
2020-04 26,617 17 0 217 11 1
2020-05 26,416 20 0 221 11 5
2020-06 26,207 36 1 245 21 4
2020-07 26,006 19 0 220 11 1
2020-08 25,794 17 0 229 6 5
2020-09 25,585 22 0 231 16 0
2020-10 25,411 17 0 191 6 0
2020-11 25,220 25 0 216 6 1
2020-12 25,054 17 0 183 4 1
2021-01 24,850 13 0 217 3 1
2021-02 24,677 18 0 191 8 1
2021-03 24,505 20 0 192 10 4
2021-04 24,306 15 1 214 7 0
2021-05 24,132 20 0 194 9 5
2022-05 22,862 60 2 1,330 27 326
2022-06 22,825 6 0 43 2 0
2022-07 22,805 3 0 23 3 0
2022-08 22,764 7 0 48 3 2
2022-09 22,739 1 0 26 0 0
2022-10 21,968 3 0 774 0 1
2022-11 16,684 1 0 5,285 1 0
2022-12 22,628 5,974 0 30 0 0
2023-01 22,608 6 0 26 4 0
2023-02 22,587 5 0 26 5 0
2023-03 22,462 6 0 131 3 42
2023-04 22,416 3 0 49 1 2
2023-05 22,393 3 1 26 2 1
2023-06 22,358 3 1 38 1 2
2023-07 22,805 1,263 3 816 286 9
2023-08 21,801 818 0 1,822 10 278
2023-09 21,771 2 0 32 2 0
2023-10 21,757 7 0 21 7 0
2023-11 21,735 3 1 25 2 1
2023-12 15,566 3 0 6,172 1 142
2024-02 21,109 5,545 15 2 59 0
2024-03 21,027 1 0 83 0 0
2024-04 20,962 0 0 65 0 0
2024-05 20,904 1 0 59 0 0
2024-06 20,255 6 2 655 3 0
2024-07 20,009 0 0 246 0 0
2024-08 17,939 0 0 2,070 0 0
2024-09 17,189 0 0 750 0 0
2024-10 17,135 0 0 54 0 0
2024-11 15,617 0 0 1,518 0 0
2024-12 15,569 0 0 48 0 0
2025-01 15,562 0 0 7 0 0
2025-02 15,561 1 0 2 0 0
2025-03 15,561 0 0 0 0 0
2025-04 15,561 1 0 1 0 0
2025-05 15,560 0 0 1 0 0
2025-06 15,560 0 0 0 0 0
2025-07 15,560 0 0 0 0 0
2025-08 15,560 0 0 0 0 0
2025-09 15,560 0 0 0 0 0
2025-10 15,565 6 0 1 0 0
2025-11 15,551 0 0 14 0 0
2025-12 15,550 0 0 1 0 0
2026-01 15,549 0 0 1 0 0
2026-02 15,484 0 0 65 0 0
2026-03 15,484 0 0 0 0 0
2026-04 15,484 0 0 0 0 0

Flow patterns (42-month cumulative)

Inbound (numbers acquired)

Direct transfer from another RespOrg34,428.0
Harvested from disconnect pool60.0
First assigned from spare pool291.0
Reactivated own disconnects51.0

Outbound (numbers lost)

Direct transfer to another RespOrg65,556.0
Standard disconnect aging process (3+ months in DISC)2,071
Abbreviated disconnect period (1–2 months in DISC)508
Released directly to spare pool772.0

Of the 2,579 disconnect episodes this RespOrg has sent through aging, 20% were abbreviated (1–2 snapshots in DISC status). This RespOrg lets most numbers age the full 3–4 months before release — normal pattern.

Top direct-transfer sources (INto UL)

LG10,802.0Lumen Technologies (Lumen)
ZX72.0Haven Partners (CHP)
MT47.0Toll Free Management
IU42.0Interactive RespOrg Management
SO42.0Signal One
JY41.0Bandwidth
CB34.0Crossbow Telecom (Primetel)
FO27.0Flotrax (Primetel)
LQ27.0Inteliquent
GA23.0Comet Media

Top direct-transfer destinations (OUT of UL)

LG14,968.0Lumen Technologies (Lumen)
JY109.0Bandwidth
KS105.0Lumen Technologies (Lumen)
IG79.0Genesys Telecom
LQ79.0Inteliquent
QY76.0Inteliquent
JT73.0Comcast
SO70.0Signal One
ZX69.0Haven Partners (CHP)
IU67.0Interactive RespOrg Management

Top vanity holdings

Summary

Formerly Century Link, among other names, Lumen is a large telecom company that's grown through numerous acquisitions and of course has multiple resporgs and systems and probably numerous numbers lost in the cracks. They also work with a number of resellers, though not as much as they used to. This makes finding the right segment of the company and the actual company providing the service especially hard.

About Lumen Technologies

Lumen Technologies, Inc. (formerly CenturyLink) is a public telecommunications company (NYSE: LUMN) providing network, edge cloud, security, voice, and managed services via fiber optic and copper networks, data centers, and cloud computing.[1][2][4] Headquartered in Monroe, Louisiana, it was rebranded from CenturyLink around 2020 and employs approximately 29,000 people.[1][2] No confirmed information on founding year from sources; user-stated HQ in Minneapolis, MN is incorrect per multiple references.[1][2][5]

Toll-free / RespOrg activity: No toll-free or RespOrg-specific news or activity found in sources.

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

Contact-form message

with a customer of Lumen
Request a specific #