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RespOrg directory

MCI

Large Telcom Group: Verizon

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MCI (RespOrg code MC) controls 5 US toll free numbers as of October 2026. That is down 2 (29%) since March 2018. Resporgs.com files it under Large Telcom. It is part of the Verizon group. Based in Cary, NC. More about MCI ↓

Transfer network

How toll free numbers move between MCI (MC) and other Resp Orgs, reconstructed from Somos registry snapshots. Larger nodes = more transfer volume; MCI is highlighted. Open the full interactive map →

Scroll to zoom, drag to pan, drag a node to reposition.

Transfer Funnel (acquired at a drop, then moved on) Off-hours fast pickup
MCI website screenshot
Website, visit, full size
Based in Cary, NC
Based in Cary, NC, street view, full size
Based in Cary, NC
Based in Cary, NC, satellite, full size

At a glance

Active numbers
5
#478 of 479
Change over 4 years
-2
-28.6%
Opportunism Index
0.00%
#284 of 320
Vanity matches
0.0%
Median inventory age
132 mo
11.0 years since last change
Sub-codes in use
1
MCI01
No results · gas gauge on empty

This RespOrg has no active inventory

Last seen with active numbers: 2026-05. Nothing in any monthly snapshot since.

The trajectory chart below shows the full history. The code may have been transferred, retired, or reassigned to a new operator that hasn't begun activating numbers yet.

Trajectory

Total active inventory Numbers harvested from disconnect pool that month
3K2K2K77502018-032023-022026-10
Show monthly numbers
MonthInventoryAcquiredHarvestedLostFrom spareTo spare
2018-03 7 0 0 0 0 0
2018-06 7 0 0 0 0 0
2018-09 7 0 0 0 0 0
2018-10 7 0 0 0 0 0
2018-11 7 0 0 0 0 0
2018-12 7 0 0 0 0 0
2019-01 7 0 0 0 0 0
2019-02 7 0 0 0 0 0
2019-03 7 0 0 0 0 0
2019-04 7 0 0 0 0 0
2019-05 7 0 0 0 0 0
2019-06 7 0 0 0 0 0
2019-08 7 0 0 0 0 0
2019-09 7 0 0 0 0 0
2019-10 7 0 0 0 0 0
2019-11 7 0 0 0 0 0
2019-12 7 0 0 0 0 0
2020-01 7 0 0 0 0 0
2020-02 7 0 0 0 0 0
2020-03 7 0 0 0 0 0
2020-04 7 0 0 0 0 0
2020-05 7 0 0 0 0 0
2020-06 7 0 0 0 0 0
2020-07 7 0 0 0 0 0
2020-08 7 0 0 0 0 0
2020-09 7 0 0 0 0 0
2020-10 7 0 0 0 0 0
2020-11 7 0 0 0 0 0
2020-12 7 0 0 0 0 0
2021-01 7 0 0 0 0 0
2021-02 7 0 0 0 0 0
2021-03 7 0 0 0 0 0
2021-04 7 0 0 0 0 0
2021-05 7 0 0 0 0 0
2022-05 5 0 0 2 0 0
2022-06 5 0 0 0 0 0
2022-07 5 0 0 0 0 0
2022-08 5 0 0 0 0 0
2022-09 5 0 0 0 0 0
2022-10 5 0 0 0 0 0
2022-11 5 0 0 0 0 0
2022-12 5 0 0 0 0 0
2023-01 5 0 0 0 0 0
2023-02 5 0 0 0 0 0
2023-03 6 1 0 0 0 0
2023-04 6 0 0 0 0 0
2023-05 6 0 0 0 0 0
2023-06 6 0 0 0 0 0
2023-07 5 0 0 1 0 0
2023-08 6 1 0 0 0 0
2023-09 6 0 0 0 0 0
2023-10 6 0 0 0 0 0
2023-11 6 0 0 0 0 0
2023-12 5 0 0 1 0 0
2024-02 6 1 0 0 0 0
2024-03 6 0 0 0 0 0
2024-04 6 0 0 0 0 0
2024-05 6 0 0 0 0 0
2024-06 6 0 0 0 0 0
2024-07 6 0 0 0 0 0
2024-08 6 0 0 0 0 0
2024-09 6 0 0 0 0 0
2024-10 5 0 0 1 0 0
2024-11 5 0 0 0 0 0
2024-12 5 0 0 0 0 0
2025-01 5 0 0 0 0 0
2025-02 5 0 0 0 0 0
2025-03 5 0 0 0 0 0
2025-04 5 0 0 0 0 0
2025-05 5 0 0 0 0 0
2025-06 5 0 0 0 0 0
2025-07 5 0 0 0 0 0
2025-08 5 0 0 0 0 0
2025-09 5 0 0 0 0 0
2025-10 5 0 0 0 0 0
2025-11 5 0 0 0 0 0
2025-12 103 98 0 0 0 0
2026-01 3,103 3,000 0 0 0 0
2026-02 3,103 0 0 0 0 0
2026-03 3,103 0 0 0 0 0
2026-04 3,103 0 0 0 0 0
2026-05 3,103 0 0 0 0 0
2026-06 5 0 0 3,098 0 0
2026-07 5 0 0 0 0 0
2026-08 5 0 0 0 0 0
2026-09 5 0 0 0 0 0
2026-10 5 0 0 0 0 0

Flow patterns (42-month cumulative)

Inbound (numbers acquired)

Direct transfer from another RespOrg3,101.0
Harvested from disconnect pool0.0
First assigned from spare pool0.0
Reactivated own disconnects0.0

Outbound (numbers lost)

Direct transfer to another RespOrg3,103.0
Entered multi-month disconnect (aging)0.0
Released directly to spare pool0.0

Top direct-transfer sources (INto MC)

BR3,100.0Somos Help Desk (Somos)
BC1.0Incontact (Nice)

Top direct-transfer destinations (OUT of MC)

NA681.0National Sales Partners
PJ519.0Independent Resporg (NumHub)
CB209.0Crossbow Telecom (Primetel)
NJ149.0Number Prospectors (CHP)
MT144.0Toll Free Management
GA138.0Comet Media
SS138.0KCG LLC
HV134.0Call Haven
SO128.0Signal One
HU55.0Flotrax (Primetel)

Summary

This is the Telco Verizon, not the Verizon Cellular.

About MCI

MCI Communications Services, Inc., operating as a subsidiary of Verizon Communications under the d/b/a Verizon Business Services, provides telecommunications services including toll-free offerings such as MCI One Number[1][2][3]. Originally founded as MCI in 1968 and acquired by Verizon in 2006, it is headquartered in Basking Ridge, NJ (with some references to Cary, NC), and operates as a private division of the public company Verizon[1][9]. No specific employee count or revenue figures for MCI as a standalone entity are available from the sources.

Affiliations: Subsidiary of Verizon Communications Inc.; d/b/a Verizon Business Services[1][2][3].

Toll free / RespOrg activity: MCI provides toll-free services via MCI One Number, as noted in North Carolina tariff filings[3]. No recent (past 36 months) toll-free or RespOrg-specific news found.

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

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