Onvoy LLC Headquarters Address, Corporate Office Location, and Contact Details

About

Onvoy, LLC is an American wholesale telecommunications provider headquartered at 10300 6th Avenue North, Plymouth, Minnesota 55441. It is a B2B-only company — it does not sell directly to individual consumers — and operates as a subsidiary of Sinch AB, a Swedish publicly traded cloud communications company (Nasdaq Stockholm: SINCH). Onvoy was founded in 1991 in Minnesota as a regional telecommunications and internet service provider. Over the following three decades it grew into one of the largest wholesale voice and messaging carriers in the United States, primarily through acquisitions. The most significant of these was its 2015 acquisition of Broadvox LLC, which made Onvoy the third-largest Competitive Local Exchange Carrier (CLEC) by rate center coverage in the US. In 2017, the private equity firm GTCR — which then owned Onvoy — acquired Inteliquent, Inc. and merged the two companies under the Inteliquent brand. Sinch AB then acquired the combined Inteliquent/Onvoy entity for approximately $1.14 billion in late 2021, making Onvoy a Sinch subsidiary. Today, Onvoy LLC serves as the direct or indirect parent of multiple Sinch US telecom entities including Inteliquent Inc., ANPI LLC, ANPI Business LLC, Onvoy Communications Limited, Onvoy Spectrum LLC, Sinch America Inc., and Voyant Communications LLC.

Who uses Onvoy: Onvoy is an infrastructure-layer carrier. Its customers are other telecom companies — wireless carriers, cable operators, VoIP providers, internet telephony service providers (ITSPs), and enterprise communications platforms — not end consumers. If you are receiving calls from numbers associated with Onvoy, those calls are being routed through Onvoy’s wholesale network by a downstream provider or customer of Onvoy, not by Onvoy directly.

Regulatory context (April 2026): Onvoy/Inteliquent and its parent Sinch AB have come under significant regulatory scrutiny. In December 2025, a multi-state Attorney General task force sent formal notice letters to Inteliquent/Onvoy regarding the transmission of illegal robocalls and scam traffic through their networks under FCC STIR/SHAKEN and Robocall Mitigation Database (RMD) compliance rules. In April 2026, an independent research report identified Sinch/Inteliquent/Onvoy as the largest facilitator of scam calls and robocalls in the US. These are unresolved as of April 2026.

Quick Facts

Founded

1991 (Plymouth, Minnesota)

HQ

10300 6th Avenue North, Plymouth, MN 55441

Registered agent address

C/O Cogency Global Inc., 6160 Summit Dr N, Suite 205, Brooklyn Center, MN 55430

Industry

Wholesale Telecommunications / CLEC / VoIP / Messaging

Type

Privately held LLC

Parent company

Sinch AB (Nasdaq Stockholm: SINCH)

Intermediate parent

Inteliquent, Inc. (merged entity, Plymouth, MN)

Phone

(763) 230-2036

Website

onvoy.com (redirects to sinch.com)

Employees

~95–500 (Onvoy LLC entity)

Sinch AB total employees

4,000+

Sinch AB net sales (2024)

USD $3 billion

NAICS Code

518210 (Data Processing, Hosting, and Related Services)

SIC Code

4813 (Telephone Communications)

Services Onvoy Provides (B2B Wholesale Only)

Onvoy is an infrastructure-layer carrier. All of its services are sold wholesale to other telecommunications companies and enterprise communications providers — not directly to the public.

Wholesale Voice (Tandem & Transit)

Routes large volumes of voice traffic between carriers across the US. Acts as a tandem switch operator enabling calls to traverse from one carrier’s network to another.

Wholesale VoIP

Termination and origination of VoIP traffic at scale for other communications providers.

CLEC Services

As a Competitive Local Exchange Carrier, Onvoy provides access to the public switched telephone network (PSTN), telephone number provisioning, and local exchange services to VoIP providers and other carriers that do not own physical local loop infrastructure.

SS7 / Database Services

SS7 (Signaling System 7) is the backbone signaling protocol of the global telephone network. Onvoy operates an SS7 network enabling call control, routing, number portability queries, and billing across interconnected carrier networks.

Toll-Free Services

Wholesale origination and routing of toll-free (800, 844, 855, 866, 877, 888) numbers for carriers and enterprise clients.

Long Distance

Wholesale long-distance termination services.

SMS / Messaging API

Business messaging services including A2P (application-to-person) SMS delivered through Sinch’s cloud platform.

911 / Emergency Services Routing

Routing of emergency 911 calls through the PSTN to public safety answering points (PSAPs).

Directory Assistance & Operator Services

Call management solutions including directory assistance routing.

What Brings You Here? Find the Right Contact

Telecom carrier / VoIP provider wholesale service inquiry

Contact Onvoy through sinch.com or directly at (763) 230-2036. For wholesale voice, CLEC interconnect, SS7, or toll-free services, submit an inquiry through sinch.com/contact or onvoy.com.

You received a suspicious call or scam call that shows Onvoy on a carrier lookup

Onvoy is an intermediate carrier — it does not make calls to consumers. Calls routed through Onvoy’s network originate from Onvoy’s downstream customers (other carriers or VoIP providers). To report illegal robocalls or scam calls, file with the FCC at consumercomplaints.fcc.gov. For fraud, contact the FTC at reportfraud.ftc.gov.

Your number was spoofed or shows Onvoy as carrier

File a complaint with the FCC. As a wholesale carrier under FCC STIR/SHAKEN rules, Onvoy/Inteliquent is required to implement robocall mitigation. The multi-state AG task force letter of December 2025 specifically cited Inteliquent/Onvoy for inadequate RMD compliance.

Business / enterprise communications platform

Onvoy’s services for enterprise communications are delivered through the Sinch platform. Visit sinch.com or contact the Sinch sales team through sinch.com/contact.

Regulatory / legal inquiry

Onvoy LLC’s registered agent is Cogency Global Inc., 6160 Summit Drive North, Suite 205, Brooklyn Center, MN 55430. For state regulatory filings and legal service, this is the registered agent of record.

Phone & Contact Directory

Corporate Headquarters

(763) 230-2036 — Main line at 10300 6th Avenue North, Plymouth, MN 55441. Business hours only. B2B inquiries only.

Website / Wholesale inquiries

onvoy.com → sinch.com

Sinch global platform inquiries

sinch.com/contact

Corporate Headquarters Address

Principal office

Onvoy, LLC (a Sinch Company)
10300 6th Avenue North
Plymouth, MN 55441
United States

Registered Agent

C/O Cogency Global Inc.
6160 Summit Drive North, Suite 205
Brooklyn Center, MN 55430

Parent company (Sinch AB)

Sinch AB
Lindhagensgatan 74
SE-112 18 Stockholm, Sweden

Onvoy also maintains additional offices and operations centers in

• Denver, Colorado
• Missoula, Montana
• Butte, Montana
• Chokio, Minnesota (call center)
• Halstad, Minnesota (call center)

Corporate Structure — How Onvoy Fits Within Sinch

Understanding Onvoy requires understanding the corporate structure it sits within. As of April 2026, the relevant ownership chain is:

• Sinch AB (ultimate parent — publicly traded, Nasdaq Stockholm: SINCH, Stockholm, Sweden) owns →
• Onvoy, LLC (direct or indirect US holding entity, Plymouth, MN) which is the parent of →
• Inteliquent, Inc. (US wholesale voice carrier, Plymouth, MN) →
• ANPI, LLC and ANPI Business, LLC (CPaaS/hosted communications) →
• Onvoy Communications Limited (regulatory entity) →
• Onvoy Spectrum LLC (spectrum-related entity) →
• Sinch America Inc. (US operating entity for Sinch cloud platform) →
• Voyant Communications, LLC (cloud communications) →
• BV-CLEC (Delaware LLC; direct subsidiary of Onvoy; provides PSTN access and telephone numbers wholesale to VoIP providers)