Top 100 Third Party Verification Companies
The Best of December 2025Looking 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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31$1,000+50 - 249 employeesHo Chi Minh City, VietnamAccounting company Innovature: AI-Driven Outsourcing Partner was established in 2015. The midsize Ho Chi Minh City, Vietnam-based team provides Accounting, Customer Service Outsourcing, BI & big data consulting & SI, Call Center Services, and more.Read More
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32$1,000+1,000 - 9,999 employeesMedellín, ColombiaSolvo Global is a Back Office Outsourcing company. Founded in 2018, the large firm is headquartered in Chandler, Arizona; Medellín, Colombia and Duluth, Georgia. Their services include Back Office Outsourcing, Call Center Services, Finance & Accounting Outsourcing (FAO), Staffing, and more.Read More
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CenCal Insurance ServicesIndustries
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33$1,000+50 - 249 employeesLas Vegas, NVLeadium is a Las Vegas, Nevada-based Sales Outsourcing company. The company offers Sales Outsourcing, Content Marketing, Call Center Services, and Email Marketing and is midsize.The company was founded in 2016.Read More
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DirecTVIndustries
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34Undisclosed10 - 49 employeesSpokane, WARead More
Sound Telecom is an answering services provider based in Spokane, Wash., with a team of 25. Founded in 1986, the team provides voice and transcription services for clients in a variety of industry.
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BoeingIndustries
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35Undisclosed1,000 - 9,999 employeesQuezon City, PhilippinesIT staff augmentation company Outsourced was established in 2012. Their large team is in Quezon City, Philippines; Muntinlupa, Philippines; Quezon City, Philippines and Quezon City, Philippines and focuses on IT staff augmentation, Back Office Outsourcing, Finance & Accounting Outsourcing (FAO), Customer Service Outsourcing, and more.Read More
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36$1,000+1,000 - 9,999 employeesOutsource and Save is a large call center in Los Angeles, California; Los Angeles, California; Lynwood, California and West Covina, California. Established in 2018, the team provides Call Center Services, Back Office Outsourcing, Customer Service Outsourcing, and Sales Outsourcing.Read More
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37Undisclosed10 - 49 employeesKing of Prussia, PARead More
Specialty Answering Service is a call center outsourcing firm based in King of Prussia, Penn. Founded in 1985, they have about 30 employees and work with a national network of freelance customer support specialists. Their services consist of voice customer support and non-voice business process outsourcing.
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Bausch+LombIndustries
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38Undisclosed1,000 - 9,999 employeesShah Alam, MalaysiaRead More
Daythree Business Services is a business service provider in Petaling Jaya, Malaysia. They provide voice services, back office services, and business consulting. They work primarily with midmarket and enterprise companies in transportation, telecommunication, and energy industries. Founded in 2008, they have about 150 employees.
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39$1,000+50 - 249 employeesSofia, BulgariaMarKam Solutions is a call center company. Their midsize team is in Sofia, Bulgaria and offers Call Center Services, Customer Service Outsourcing, Sales Outsourcing, IT managed services, and more. The agency was established in 2021.Read More
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40$1,000+50 - 249 employeesBengaluru, IndiaRead More
Unee Solutions is a business process outsourcing firm based in Stafford, Texas with additional assets in India and Israel. They were founded in 2007 and currently have a staff of 125 employees. Unee Solutions' solutions focus on lead generation and include both voice outsourcing and non-voice back office services.
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KernIndustries
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41$1,000+250 - 999 employeesNew Delhi, IndiaRead More
Founded in 2011, Call2Customers is an outsourced call center in New Delhi, India with roughly 250 employees who provide voice and BPO services. They focus on B2B lead generation and B2C telemarketing for clients.
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BETA ITIndustries
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42$1,000+50 - 249 employeesPortland, ORTECHSPEED INC, a Back Office Outsourcing company, was founded in 2002. The company specializes in Back Office Outsourcing, Document Digitization & Management, Customer Service Outsourcing, Data Annotation Services, and more and has a midsize team.Read More
Clients
Bank of America Berg Electric WACOM US NAVYIndustries
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43$5,000+250 - 999 employeesKalyan, IndiaRead More
Tasks Expert is a social media marketing agency located in Killeen, Texas and Kalyan, India. The firm focuses on social media marketing and has a small team.The firm was founded in 2017.
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44$5,000+250 - 999 employeesMiami Beach, FLUassist.ME is a Back Office Outsourcing company. The Miami Beach, Florida-based agency was founded in 2009. The midsize team specializes in Back Office Outsourcing, Customer Service Outsourcing, Call Center Services, and Sales Outsourcing.Read More
Clients
FacebookIndustries
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45$25,000+50 - 249 employeesKarachi, PakistanExperts Helping Businesses, a Customer Service Outsourcing company, is in Karachi, Pakistan. The midsize agency was founded in 2017. Their services include Customer Service Outsourcing, Call Center Services, Back Office Outsourcing, and Sales Outsourcing.Read More
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46$1,000+50 - 249 employeesZagreb, CroatiaSignifico is a CRM consulting and SI company. They offer CRM consulting and SI, Call Center Services, Back Office Outsourcing, and Customer Service Outsourcing and were launched in 2007. Their midsize team is Zagreb, Croatia-based.Read More
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McDonald's Croatia Porsche Inter Auto d.o.o PORSCHE CROATIA d.o.o. INA d.d.Industries
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47$50,000+250 - 999 employeesSalisbury, NCRead More
GCS Agents is a contact center firm in Salisbury, N.C., founded in 2001. The team of 300 specializes in voice services, consulting, and BPO services for its majority midmarket clients across multiple industries.
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48$5,000+50 - 249 employeesSofia, BulgariaRead More
Mercatus is a boutique BPO and ITO service and solution provider from Sofia, Bulgaria founded in 2018. With a team of about 20 employees, they offer their clientele voice services, business consulting, IT staff augmentation, back-office services, and more.
Clients
J2 GLobalIndustries
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49$1,000+250 - 999 employeesLapu-Lapu City, PhilippinesSocial media marketing agency JOYNO INC is headquartered in Lapu-Lapu City, Philippines and Santa Monica, California. The company provides Social Media Marketing, Content Marketing, Email Marketing, Call Center Services, and more and is midsize.The company was founded in 2023.Read More
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50$1,000+50 - 249 employeesRiverbank, CARead More
TeleContact is an outsourced telemarketing solutions company headquartered in Riverbank, Calif. with another office in Modesto, Calif. The company was founded in 1994 and now employs a team of around 50 that is entirely dedicated to voice services.
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Wells FargoIndustries
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51$1,000+50 - 249 employeesKyiv, UkraineRead More
Intellink is a Data management company in Ukraine. Founded in 2020, they have over 50 employees with clients in hospitality, education, transportation, medicine, and consumer products. Their services include Data annotation and Data collection.
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EcoSoftIndustries
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52$1,000+250 - 999 employeesJefferson City, MORead More
GroupOne Health Source is a full service medical billing and consulting firm based in Jefferson City, Mo. Since 1991, their current team of 108 has been specializing in non-voice BPO services, voice services, and transcription for clients in the medical field.
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Sunshine PediatricsIndustries
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53$1,000+50 - 249 employeesTunis, TunisiaCall center service Business & Services Solutions was established in 2012. Headquartered in Tunis, Tunisia, their midsize team specializes in Call Center Services, Customer Service Outsourcing, Back Office Outsourcing, and Sales Outsourcing.Read More
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54Undisclosed250 - 999 employeesChicago, ILHeadquartered in Chicago, Illinois and Dubai, United Arab Emirates, LiveAdmins is an artificial intelligence development company. The midsize team offers Artificial Intelligence, Call Center Services, Customer Service Outsourcing, AI Consulting, and more and was established in 2002.Read More
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55Undisclosed10 - 49 employeesRead More
Conversational is a voice services company founded in 2003. Located in Fredericksburg, Virginia, the mid-sized team of experienced professional receptionists provides the best possible support for clients in the legal and medical industries, among others.
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56Undisclosed2 - 9 employeesCoral Gables, FLRead More
Founded in 1975, Sunshine Communication Services is an answering service based in Coral Gables, Fla. Their team of about 10 specializes in voice and BPO services.
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Mayo ClinicIndustries
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57$1,000+1,000 - 9,999 employeesQuezon City, PhilippinesSourcefit is an IT managed services company. The large Honolulu, Hawaii-based company was founded in 2009. Their team focuses on IT managed services, IT staff augmentation, Call Center Services, Back Office Outsourcing, and more.Read More
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58$5,000+250 - 999 employeesMontego Bay, JamaicaRead More
Answering service company Genesis Support Solution LTD was established in 2020. The midsize team focuses on call center services, customer service outsourcing, HR services, translation, and more. The agency is in Montego Bay, Jamaica and Miami, Florida.
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59$1,000+50 - 249 employeesKarachi, PakistanAtDesk247, an answering service, is located in Karachi, Pakistan. The midsize agency was launched in 2020. Their team offers Call Center Services, Customer Service Outsourcing, and Back Office Outsourcing.Read More
Clients
Designer Sofas 4UIndustries
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60$1,000+50 - 249 employeesGurugram, IndiaLocated in Gurugram, India and Gurugram, India, Tech Fi Technologies is a call center service. The midsize team offers Call Center Services, Customer Service Outsourcing, Content Moderation Services, Sales Outsourcing, and more. The firm was established in 2016.Read More
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