How many toll free numbers does Grand Circle Travel have?

Grand Circle Travel (GK) manages 61 active toll free numbers as of 2026-10, according to the Somos toll free registry tracked by Resporgs.com.

How do I request a specific toll free number from Grand Circle Travel?

Resporgs.com hosts a request form for Grand Circle Travel at https://resporgs.com/ask/GK. Fill in the number you want and your contact details. Bill Quimby reads every request and passes appropriate ones to the company that holds the number.

RespOrg directory

Grand Circle Travel

Q: What is Grand Circle Travel?

Grand Circle Travel is a US toll free Responsible Organization (RespOrg), code GK. Grand Circle Travel (RespOrg code GK) controls 61 US toll free numbers as of October 2026. That is down 2 (3%) since March 2018. Resporgs.com files it under Corporate Client. Based in Boston, MA.

alias: OAT Travel, Overseas Adventure Travel

Corporate Client

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Grand Circle Travel (RespOrg code GK) controls 61 US toll free numbers as of October 2026. That is down 2 (3%) since March 2018. Resporgs.com files it under Corporate Client. Based in Boston, MA.

Transfer network

How toll free numbers move between Grand Circle Travel (GK) and other Resp Orgs, reconstructed from Somos registry snapshots. Larger nodes = more transfer volume; Grand Circle Travel 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 Boston, MA, street view, full size

Based in Boston, MA, satellite, full size

Website: https://www.oattravel.com/ Domain since 1998 (28y)
Phone: (800) 221-2610 via web search: gct.com

At a glance

Active numbers

#368 of 479

Change over 4 years

-2

-3.2%

Opportunism Index

0.00%

Harvested 0 / acquired 4

Vanity matches

32.7%

Median inventory age

61 mo

5.1 years since last change

Sub-codes in use

GKL01

Inventory by NPA

Click any NPA for total pool inventory across the industry.

By status

WORKING 47, 100.0%

Inventory age buckets

3–12 months 1, 1.8%
1–2 years 7, 12.7%
2–5 years 4, 7.3%
5+ years 35, 63.6%

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	63	0	0	0	0
2018-06	63	0	0	0	0
2018-09	63	0	0	0	0
2018-10	63	0	0	0	0
2018-11	63	0	0	0	0
2018-12	63	0	0	0	0
2019-01	63	0	0	0	0
2019-02	63	0	0	0	0
2019-03	63	0	0	0	0
2019-04	63	0	0	0	0
2019-05	62	0	1	0	0
2019-06	62	0	0	0	0
2019-08	62	0	0	0	0
2019-09	62	0	0	0	0
2019-10	62	0	0	0	0
2019-11	62	0	0	0	0
2019-12	62	0	0	0	0
2020-01	62	0	0	0	0
2020-02	63	1	0	0	0
2020-03	63	0	0	0	0
2020-04	63	0	0	0	0
2020-05	63	0	0	0	0
2020-06	63	0	0	0	0
2020-07	63	0	0	0	0
2020-08	63	0	0	0	0
2020-09	63	0	0	0	0
2020-10	63	0	0	0	0
2020-11	63	0	0	0	0
2020-12	63	0	0	0	0
2021-01	63	0	0	0	0
2021-02	63	0	0	0	0
2021-03	63	0	0	0	0
2021-04	63	0	0	0	0
2021-05	63	0	0	0	0
2022-05	64	1	0	0	0
2022-06	64	0	0	0	0
2022-07	64	0	0	0	0
2022-08	64	0	0	0	0
2022-09	64	0	0	0	0
2022-10	64	0	0	0	0
2022-11	64	0	0	0	0
2022-12	64	0	0	0	0
2023-01	64	0	0	0	0
2023-02	64	0	0	0	0
2023-03	64	0	0	0	0
2023-04	64	0	0	0	0
2023-05	64	0	0	0	0
2023-06	65	1	0	1	0
2023-07	64	0	1	0	1
2023-08	65	1	0	1	0
2023-09	65	0	0	0	0
2023-10	65	0	0	0	0
2023-11	65	0	0	0	0
2023-12	65	0	0	0	0
2024-02	65	0	0	0	0
2024-03	65	0	0	0	0
2024-04	65	0	0	0	0
2024-05	65	0	0	0	0
2024-06	65	0	0	0	0
2024-07	65	0	0	0	0
2024-08	65	0	0	0	0
2024-09	65	0	0	0	0
2024-10	65	0	0	0	0
2024-11	65	0	0	0	0
2024-12	65	0	0	0	0
2025-01	65	0	0	0	0
2025-02	65	0	0	0	0
2025-03	65	0	0	0	0
2025-04	65	0	0	0	0
2025-05	65	0	0	0	0
2025-06	65	0	0	0	0
2025-07	65	0	0	0	0
2025-08	65	0	0	0	0
2025-09	65	0	0	0	0
2025-10	62	0	3	0	0
2025-11	61	0	1	0	0
2025-12	61	0	0	0	0
2026-01	61	0	0	0	0
2026-02	61	0	0	0	0
2026-03	61	0	0	0	0
2026-04	61	0	0	0	0
2026-05	61	0	0	0	0
2026-06	61	0	0	0	0
2026-07	61	0	0	0	0
2026-08	61	0	0	0	0
2026-09	61	0	0	0	0
2026-10	61	0	0	0	0

Flow patterns (42-month cumulative)

Inbound (numbers acquired)

Direct transfer from another RespOrg	4.0
Harvested from disconnect pool	0.0
First assigned from spare pool	4.0
Reactivated own disconnects	0.0

Outbound (numbers lost)

Direct transfer to another RespOrg	10.0
Entered multi-month disconnect (aging)	0.0
Released directly to spare pool	2.0

Top direct-transfer sources (INto GK)

CD	1.0	Paetec (Windstream)
AT	1.0	AT&T

Top direct-transfer destinations (OUT of GK)

AX	3.0	CallTower
TW	1.0	Twilio
AT	1.0	AT&T

Summary

A corporate travel client.

Top vanity holdings

Category:

800TOODARK 800353-MAMA 800TONE-292 800TOODARK 800ELENA MC 800ELENA MC 800ELENA MC 800AGUERES 800BITESDR 855ICEEIIO 800TOMDAZA 800TOODAYS 800TOODAYS 855JEEWEEL 855LEEWFFJ 866MINCOLL 800TONNKOU 800KYRAKAT

Contact-form message

with Grand Circle Travel

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