How many toll free numbers does XO Communications have?

XO Communications (IV) manages 6,860 active toll free numbers as of 2026-06, according to the Somos toll free registry tracked by Resporgs.com.

How do I request a specific toll free number from XO Communications?

Resporgs.com hosts a request form for XO Communications at https://resporgs.com/ask/IV. Fill in the number you want and your contact details; we'll route the request to the appropriate party.

RespOrg directory

XO Communications

alias: Part of Verizon now

Large Telcom Group: Verizon

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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. I… read more ↓

Transfer network

How toll free numbers move between XO Communications (IV) and other Resp Orgs, reconstructed from Somos registry snapshots. Larger nodes = more transfer volume; XO Communications 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

Website, visit, full size

Based in Beaverton, OR, street view, full size

Based in Beaverton, OR, satellite, full size

Website: xo.com redirects to https://www.verizon.com/business/xo/
Phone: (800) 421-3872 via web search: verizon.com

At a glance

Active numbers

6,860

#184 of 481

Change over 4 years

-29,133

-80.9% · #107 of 159

Opportunism Index

0.00%

#284 of 320

Vanity matches

16.1%

#169 of 206

Median inventory age

104 mo

8.7 years since last change
#34 of 206 oldest

Sub-codes in use

IVN99, IVN04, IVN01

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, 93.7%

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

Show monthly numbers

Month	Inventory	Acquired	Lost	From spare	To spare
2018-03	35,993	0	0	0	0
2018-06	31,578	340	4,755	306	1
2018-09	28,395	349	3,532	202	0
2018-10	28,481	134	48	134	0
2018-11	28,496	54	39	50	0
2018-12	28,475	53	74	52	0
2019-01	28,422	1	54	0	0
2019-02	28,421	34	35	29	0
2019-03	28,325	0	96	0	0
2019-04	28,262	2	65	0	0
2019-05	28,196	0	66	0	0
2019-06	26,855	8	1,349	0	0
2019-08	24,110	53	2,798	16	2,700
2019-09	26,474	2,655	291	2,653	0
2019-10	26,059	6	421	0	0
2019-11	25,895	15	179	1	0
2019-12	25,668	2	229	1	0
2020-01	24,596	44	1,116	0	0
2020-02	22,301	1	2,296	0	0
2020-03	22,255	5	51	0	0
2020-04	21,640	0	615	0	0
2020-05	18,955	7	2,692	0	0
2020-06	18,938	7	24	0	0
2020-07	18,215	7	730	0	0
2020-08	18,215	0	0	0	0
2020-09	18,147	5	73	0	0
2020-10	17,930	1	218	1	0
2020-11	16,673	0	1,257	0	0
2020-12	16,346	1	328	0	0
2021-01	16,269	0	77	0	0
2021-02	16,215	1	55	1	0
2021-03	16,020	0	195	0	0
2021-04	15,886	0	134	0	0
2021-05	15,329	0	557	0	0
2022-05	9,724	2	5,607	2	1,111
2022-06	9,721	0	3	0	0
2022-07	8,634	0	1,087	0	0
2022-08	8,634	0	0	0	0
2022-09	8,634	0	0	0	0
2022-10	8,634	0	0	0	0
2022-11	8,628	0	6	0	0
2022-12	8,625	0	3	0	0
2023-01	8,625	0	0	0	0
2023-02	8,625	0	0	0	0
2023-03	8,625	0	0	0	0
2023-04	8,625	0	0	0	0
2023-05	8,627	2	0	0	0
2023-06	8,614	0	13	0	0
2023-07	8,634	22	2	0	0
2023-08	8,614	2	22	0	0
2023-09	8,614	0	0	0	0
2023-10	8,614	0	0	0	0
2023-11	8,614	0	0	0	0
2023-12	8,588	0	26	0	0
2024-02	8,614	26	0	0	0
2024-03	8,613	0	1	0	0
2024-04	8,613	0	0	0	0
2024-05	8,613	0	0	0	0
2024-06	8,613	0	0	0	0
2024-07	8,613	0	0	0	0
2024-08	8,612	0	1	0	0
2024-09	8,610	0	2	0	0
2024-10	8,603	0	7	0	0
2024-11	8,595	0	8	0	0
2024-12	8,589	0	6	0	0
2025-01	8,554	0	35	0	0
2025-02	8,536	0	18	0	0
2025-03	8,536	0	0	0	0
2025-04	8,520	0	16	0	0
2025-05	8,520	0	0	0	0
2025-06	8,480	0	40	0	0
2025-07	8,421	0	59	0	0
2025-08	8,353	0	68	0	0
2025-09	8,352	0	1	0	0
2025-10	8,352	0	0	0	0
2025-11	8,324	0	28	0	0
2025-12	8,323	0	1	0	0
2026-01	6,860	0	1,463	0	0
2026-02	6,860	0	0	0	0
2026-03	6,860	0	0	0	0
2026-04	6,860	0	0	0	0
2026-05	6,860	0	0	0	0
2026-06	6,860	0	0	0	0

Flow patterns (42-month cumulative)

Inbound (numbers acquired)

Direct transfer from another RespOrg	1,173.0
Harvested from disconnect pool	0.0
First assigned from spare pool	10,344.0
Reactivated own disconnects	276.0

Outbound (numbers lost)

Direct transfer to another RespOrg	85,509.0
Standard disconnect aging process (3+ months in DISC)	1,234
Abbreviated disconnect period (1–2 months in DISC)	1,946
Released directly to spare pool	11,436.0

Of the 3,180 disconnect episodes this RespOrg has sent through aging, 61% 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 IV)

NL	154.0	XO (Verizon)
VZ	58.0	Verizon Business (Verizon)
AT	43.0	AT&T
BC	26.0	Incontact (Nice)
JY	25.0	Bandwidth
KS	16.0	Lumen Technologies (Lumen)
AL	14.0	Lumen Technologies (Lumen)
LG	12.0	Lumen Technologies (Lumen)
IM	8.0	Integra Telecom (Allstream)
HD	7.0	Line Systems

Top direct-transfer destinations (OUT of IV)

VZ	7,650.0	Verizon Business (Verizon)
LG	4,062.0	Lumen Technologies (Lumen)
TW	3,616.0	Twilio
AT	1,341.0	AT&T
AU	1,206.0	ATL Communications (ATLC)
WL	1,101.0	BCM One (BCM-One)
JY	1,099.0	Bandwidth
SP	937.0	Sprint (T-Mobile)
QI	835.0	Telnyx
KS	751.0	Lumen Technologies (Lumen)

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.

Top vanity holdings

Category:

877WIRELESS 800CONDUIT 800CONDUIT 866TRADERS 844TUBETNR 800ZETLAND 866VICKERS 800CONDUIT 866METERING 800JUICEUP 888QUICKGPS 877BLOWZRO 877WIRELES 866INSTPRO 866ALPHAPC 877TELAFIT 855UPGRDME 800WETLAND 877WIRELES 877WIRELES 800WETLAND 866ALPHASAFE 800JUICEUP 888BLITZBX 866ALPHAPAL 877WIRELES 877WIRELES 800JUICEUP 866SPDREVIV 888STIRFAM 800STARFIX 855POSHPROX 866LIMPPRO 800JUICEUP 866TRADERS 800GUTRVAC 866FINDPPL 866TRADERS 800CONDUIT 866FINDPPL 888TRANSMT 866TRADERS 866DRHAIR1 855AAARATS 866TRADERS 877FPVKITS 888QUICKPRO 855247POWR 855ABCRATS 866TRADERS 866TRADE-77 866TRADERS 866TRADES7 866TRADESS 800CONDUIT 866LOUERGO 866ALPHAPAV 866HOSPPRO 87721-DAYS 866HORSPRO

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