Company lists · Data refreshed September 2026

Top 9 Telemarketing companies based in New York, United States

RevenueBase identified 48 telemarketing companies headquartered in New York, United States as of September 2026 and tracks 834 professional contacts across them, including 34 with verified work emails and 85 with mobile numbers. New York is the largest hub.

This list covers telemarketing companies headquartered in New York, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 13, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 13, 2026 86% judged on-target in blind review
48Companies
834Contacts tracked
34Verified emails
85Mobile numbers
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The 9 largest telemarketing companies based in New York, United States

Ranked by team size
Top 9 of 48 telemarketing companies based in New York, United States, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to telemarketing companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceNew York, United StatesHQ checked Sep 13, 2026501-1,000173 contacts →

Indirect evidence

“Calls Experts is a global contact center solution provider.”

Source: RevenueBase Database · checked Sep 13, 2026
2Indirect evidenceNew York, NY, United StatesHQ checked Sep 13, 20261,001-5,00053 contacts →

Indirect evidence

“Scale Your Business Let's be honest, “A Business That Isn’t Growing, Is Slowly Dying”.”

Source: RevenueBase Database · checked Sep 13, 2026
3Indirect evidenceNew York, NY, United StatesHQ checked Sep 13, 2026201-50045 contacts →

Indirect evidence

“DCM is the premier teleservices company dedicated exclusively to supporting the sales and fundraising efforts of not-for-profit organizations throughout the country.”

Source: RevenueBase Database · checked Sep 13, 2026
4Indirect evidenceNew York, NY, United StatesHQ checked Sep 13, 202611-5027 contacts →

Indirect evidence

“For enterprise technology companies ready to push boundaries, Site Ascend is the powerhouse behind qualified appointment setting and B2B lead generation that drives results.”

Source: RevenueBase Database · checked Sep 13, 2026
5Indirect evidenceNew York, NY, United StatesHQ checked Sep 13, 2026201-50014 contacts →

Indirect evidence

“IMG Corporations is a venture-capital backed firm.”

Source: RevenueBase Database · checked Sep 13, 2026
6Indirect evidenceNew York, United StatesHQ checked Sep 13, 202611-509 contacts →

Indirect evidence

“BizzLead is a lead generation and appointment setting company offering unparalleled data accuracy and versatile services, all with the goal of helping our clients smash through…”

Source: RevenueBase Database · checked Sep 13, 2026
7Indirect evidenceNew York, United StatesHQ checked Sep 13, 20261-103 contacts →

Indirect evidence

“Most B2B founders build their first clients through referrals.”

Source: RevenueBase Database · checked Sep 13, 2026
8Indirect evidenceNew York, NY, United StatesHQ checked Sep 13, 202651-2002 contacts →

Indirect evidence

“Klienture is a boutique lead generation and demand creation company, specializing in connecting businesses with their ideal customers & clients.”

Source: RevenueBase Database · checked Sep 13, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 13, 20261-101 contacts →

Indirect evidence

“Generating high intent, consumer-initiated inbound calls from consumers ready to make a decision today.”

Source: RevenueBase Database · checked Sep 13, 2026

Showing 9 of 48 telemarketing companies based in New York, United States

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Telemarketing companies based in New York, United States at a glance

As of Sep 13, 2026
4.1%Verified-email coverage
10.2%Mobile-number coverage
17.4Average contacts per company
11-50Median size (employees)
79.2%Largest-city concentration · New York
Sep 13, 2026Page data refreshed

Companies by employee count

1-10
12
11-50
20
51-200
9
201-500
5
501-1,000
1
1,001-5,000
1

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 16.0d

Company record updated

Median 80.0d

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among telemarketing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in New York, United States whose own description of what they do matches “telemarketing companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names telemarketing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among telemarketing companies, and records with no verified work email. Companies headquartered outside New York are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 34 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 13, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Telemarketing companies by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names telemarketing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many telemarketing companies are there based in New York, United States?

RevenueBase identified 48 telemarketing companies headquartered in New York, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Callsexperts, headquartered in New York, tops this list with the largest team on record.

Which city has the most telemarketing companies?

New York leads with 38 headquartered companies, followed by Houston (34) and Los Angeles (33).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 34 verified decision-maker contacts tracked across these 48 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 13, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.