Top 100 Third Party Verification Companies
The Best of July 2026Looking for a top third party verification service?
This guide contains companies from all over the globe that excel in third-party verification. Their services vary from non-voice BPO/back-office services to voice services to transcription and they provide a multitude of other services your company may need. With all of these options, we know that it can be difficult to navigate the best company for you.
That's why we've created this list of the best third party verification companies for you to review. Read through company descriptions, former clients, and notable projects to find the best fit for your business.
List of the Best Third Party Verification Agencies
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121$1,000+50 - 249 employeesFounded in 2021, SWITCH 360 is an answering service company. Their midsize team is located in Los Angeles, California. Their services include call center services, customer service outsourcing, digital strategy, search engine optimization, and more.Read More
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122Undisclosed10 - 49 employeesErie, PARead More
PCMSI is a professional telecommunications agency based in Erie, Pa. The company was founded in 1962 and employs a team of just under 30. They provide a range of voice services for clients in a variety of industries.
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123Undisclosed50 - 249 employeesPhoenix, AZReceptionHQ is a Phoenix, Arizona-based answering service. The midsize company was launched in 2007. Their team focuses on Call Center Services, Customer Service Outsourcing, and Back Office Outsourcing.Read More
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FlatFeeLandlordIndustries
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124$1,000+50 - 249 employeesKolkata, IndiaBack office outsourcing company RFS Business Solutions Pvt Ltd is located in Kolkata, India. The agency specializes in back office outsourcing, customer service outsourcing, and call center services and is midsize.The agency was founded in 2019.Read More
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125$10,000+50 - 249 employeesTijuana, MexicoRead More
CallTree BPO is a midsize call center company. Founded in 2020, the team offers call center services, back office outsourcing, customer service outsourcing, sales outsourcing, and more. The company is in Tijuana, Mexico.
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126$5,000+10 - 49 employeesMiami, FLRead More
Located in Miami, Florida and Managua, Nicaragua, ALPHA BPO LLC is a customer service outsourcing company. The small team specializes in customer service outsourcing, call center services, IT managed services, web development, and more. The firm was founded in 2019.
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127$1,000+50 - 249 employeesShah Faisal Town, PakistanAssistring LLC is a Back Office Outsourcing company. The midsize Stratham, New Hampshire-based company was launched in 2024. Their team offers Back Office Outsourcing, Customer Service Outsourcing, Call Center Services, HR Outsourcing, and more.Read More
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128Undisclosed10 - 49 employeesCairo, EgyptBased in Cairo, Egypt, MARS EC is a telephone answering service. The small team offers Call Center Services, Customer Service Outsourcing, and Sales Outsourcing and was established in 2021.Read More
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129$1,000+50 - 249 employeesSheridan, WYServixer, LLC is a transcription company established in 2018. The midsize Sheridan, Wyoming-based team provides transcription, social media marketing, voice services, digital strategy, and more.Read More
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130Undisclosed2 - 9 employeesMiami, FLVirtual Receptionist Pro is a call center service. They are based in Miami, Florida and have a small team. The company offers call center services.Read More
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131Undisclosed250 - 999 employeesSignMore, a call center company, was launched in 2022. The midsize team specializes in Call Center Services and Sales Outsourcing.Read More
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132Undisclosed2 - 9 employeesBusiness consulting company Jeremy Chen Sales was established in 2018. The agency specializes in business consulting, call center services, back office outsourcing, and sales outsourcing and has a small team.Read More
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133$1,000+50 - 249 employeesEnglish Call Centre is a phone answering service founded in 2011. Their midsize team is in New Delhi, India. The company specializes in call center services, back office outsourcing, customer service outsourcing, and sales outsourcing.Read More
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134Undisclosed1,000 - 9,999 employeesWinchester, VACentro is a HR Outsourcing company. The Winchester, Virginia-based firm specializes in HR Outsourcing and Call Center Services.Read More
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135$1,000+2 - 9 employeesRoyal Wootton Bassett, EnglandCall center Double Tap Marketing Ltd is located in Royal Wootton Bassett, United Kingdom. Launched in 2017, the small team focuses on call center services, email marketing, and sales outsourcing.Read More
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136$10,000+10 - 49 employeesSan Salvador, El SalvadorRead More
Callsite Solutions is a phone answering service. The small San Salvador, El Salvador-based company was launched in 2022. Their services include call center services, customer service outsourcing, back office outsourcing, and sales outsourcing.
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137$1,000+10 - 49 employeesIrvine, CAHelpt is a small Irvine, California-based IT staff augmentation company. Founded in 2022, the team specializes in IT staff augmentation, Call Center Services, and Customer Service Outsourcing.Read More
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138$5,000+50 - 249 employeesLucknow, IndiaAccounting company Shared Consulting, LLC is located in Everett, Washington and Lucknow, India. The midsize firm was launched in 2012. Their team offers accounting, hr outsourcing, IT managed services, call center services, and more.Read More
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139$1,000+10 - 49 employeesRead More
Xplore-Tech is a BPO company founded in 2004 in Kolkata, India. Xplore-Tech looks to provide voice/call center services, non-voice BPO/back office services, and transcription capabilities to clients in Canada, the U.S., the Philippines, and India. The firm operates with a team of fewer than 10 employees.
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140Undisclosed250 - 999 employeesRead More
Max BPO is a call center agency headquartered in Nanaimo, Canada, with offices in Noida, India, and Takoma Park, Md. Since 1997, their team of 52 has provided clients with voice services, non-voice BPO/back-office services, and finance & accounting outsourcing expertise. Their call center services focus on B2C telemarketing, answering services, and virtual receptionist services, among others.
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141$1,000+50 - 249 employeesSan Diego, CACallZent is a Market Research company launched in 2023. The company specializes in Market Research, Customer Service Outsourcing, Call Center Services, Custom Software Development, and more and has a midsize team.Read More
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142$75,000+50 - 249 employeesCouva, Trinidad and Tobago2ndOffice Limited is a IT staff augmentation company. They are located in Couva, Trinidad and Tobago and have a midsize team. The agency focuses on IT staff augmentation, call center services, back office outsourcing, finance & accounting outsourcing (FAO), and more.Read More
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143$1,000+50 - 249 employeesDialnest PTE LTD is an answering service company. They specialize in Call Center Services, Back Office Outsourcing, Customer Service Outsourcing, and Sales Outsourcing and were established in 2023. The agency is in Singapore, Singapore and Iloilo City, Philippines.Read More
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144$1,000+250 - 999 employeesRead More
Launched in 2017, Rely ON Ants is a customer service outsourcing company. Their midsize team is in Berlin, Germany. Their services include customer service outsourcing, call center services, back office outsourcing, and sales outsourcing.
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145Undisclosed1,000 - 9,999 employeesPasay, PhilippinesEPerformax Contacts Center and BPO is a large phone answering service in Pasay, Philippines. The team offers Call Center Services.Read More
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146$1,000+1,000 - 9,999 employeesKyiv, UkraineRead More
A.R.C.E. is a call center based in Lviv, Ukraine. Founded in 2007, the team of 52 specializes in voice and non-voice BPO/back office services.
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VodafoneIndustries
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147$1,000+50 - 249 employeesTempe, AZRead More
Calibrus is a customer management contact center headquartered in Tempe, Ariz. Founded in 2013, they have about 40 employees that have clients in the business services, consumers products, financial service, healthcare, and retail industries. Their solutions include third-party verification, outbound lead generation, and hosted call recording.
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148$1,000+250 - 999 employeesNoida, IndiaRead More
Noida Exim Private Limited is a call center outsourcing services provider based in Noida, India. The company, founded in 2009, has more than 250 employees and provides voice services and non-voice BPO/back office services to companies in various industries.
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AISINIndustries
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149Undisclosed50 - 249 employeesNoida, IndiaAscentBPO is a call center company. Established in 2013, the agency is based in Noida, India. Their services include Call Center Services and Back Office Outsourcing.Read More
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150$1,000+10 - 49 employeesRead More
Alpha Assistant, a small non-voice bpo/back office services and telephone answering service, is located in Fort Worth, Texas. The team focuses on non-voice bpo/back office services and voice services.
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