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Strategic Internet IntelligenceJun 06, 2026
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Volver al desk de empresas›ONOFF TELECOM SAS
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Informe de empresa / Digital infrastructure institution

By Jennifer Yu EDITOR DE MERCADO

ONOFF TELECOM SAS

The company is tracked because it mediates a critical link between regulated telephone numbering and cloud-subscription services. For businesses it controls employee number assignment, communications metadata, and API conduits into internal systems. For consumers it gates secondary-number availability and continuity. Dependency on a single operator for these functions creates concentration risk, particularly around account enforcement, carrier outages, and governance of the programmable interface.

AutorJennifer Yu

Editorial owner accountable for this profile route.

Tiempo de lectura5 min

Estimated reading time at standard editorial pace.

PublicadoMay 26, 2026

Date this profile last entered editorial circulation.

Last updateJun 02, 2026

Date this profile last entered editorial circulation.

CategoryDigital infrastructure institution

Controlled classification used for cross-profile comparison.

RegiónEurope

Primary geography where current signals are most visible.

Signal FocusInstitution Type

Principal area tracked in this intelligence profile.

Tipo de contenidoProfile

Structured profile used for cross-category comparison.

Dominio principalInfrastructure

Primary editorial domain framing the analysis.

TemaTelecommunications

Controlled taxonomy label used for this profile route.

Horizonte temporalQuarter (30-120d)

Most likely window for material strategy effects.

ImpactoMediumThe signal alters planning assumptions but usually requires secondary implementation before full effect.
Confianza0.95

Anchored to multiple primary-source references and direct disclosures.

Paquete de evidencia

Fuentes primarias utilizadas para la clasificación y la puntuación de impacto.

Contexto

ONOFF TELECOM SAS operates the Onoff consumer second-number app and Onoff Business telephony platform, turning French and international numbering into cloud services. Public identity is solid via SIREN 832 235 253 and first-party terms, with a limited but visible RIPE/BGP footprint under AS211948. Two gaps define the assessment: ARCEP numbering decisions reference a different SIREN, and company‑reported scale metrics are inconsistent. Watch the regulatory entity mapping, API surface governance, and carrier‑dependency signals.

Core Entity Brief

Core Entity Brief

EntityONOFF TELECOM SAS
Public roleThe company is tracked because it mediates a critical link between regulated telephone numbering and cloud-subscription services. For businesses it controls employee number assignment, communications metadata, and API conduits into internal systems. For consumers it gates secondary-number availability and continuity. Dependency on a single operator for these functions creates concentration risk, particularly around account enforcement, carrier outages, and governance of the programmable interface.
RegionEurope
CategoryDigital infrastructure institution
Primary domainInfrastructure
Signal focusInstitution Type
Time horizonQuarter (30-120d)
ImpactMedium
Confidence0.95
Evidence coverage12 public source references
Related coverage1 linked article
WebsitePublic evidence pending
Last updateJun 02, 2026

ONOFF TELECOM SAS is a Paris-registered telecom operator behind Onoff and Onoff Business, selling cloud-based secondary phone numbers and business telephony while maintaining a visible RIPE and BGP infrastructure footprint.

What It Does

  • Consumer subscriptions: Consumer users pay for secondary Onoff numbers and related calling features. The app is free to download, while Onoff numbers are sold from monthly paid plans and purchases can be billed through app stores or the Onoff website.
  • Business telephony seats: Businesses pay for Onoff Business licenses that package phone numbers, national calls and SMS, web and mobile apps, reporting, recordings, transcription, CRM integrations, IVR, onboarding and priority support depending on plan level.
  • Integration layer: The company exposes webhooks and a beta REST API for business customers, allowing call, SMS, voicemail, user, number, department and statistics data to move into customer systems. Public API access is described as tied to the MAX plan.
  • Telecom dependency model: The operating model depends on telecom numbering rights, third party mobile or operator subscriptions, service providers, app platforms and internet routing. Public terms say users or companies retain an operator subscription with a third party carrier before using the service.

Operating Snapshot

  • Legal identity: The French state company directory lists ONOFF TELECOM as active SIREN 832 235 253, a SAS in other telecommunications activities, created on 2017-09-13, headquartered at 26 boulevard de Bonne Nouvelle in Paris, with 20 to 49 employees in 2023.
  • Consumer product: Official Onoff pages describe the company as based in Paris and Tallinn and as offering several phone numbers of different nationalities on one smartphone without a second SIM or second device.
  • Company stated scale: Official About material states that Onoff is owned by Onoff Telecom, uses patented technology to put mobile numbers and telecom technology in the cloud, and reported more than 2 billion messages exchanged through Onoff technology.
  • B2B product: The business product sells Connect, Advanced and Max plans with per license monthly pricing, mobile and web apps, national minutes and SMS, integrations, call recording and transcription, IVR features and AI assisted call tools at higher tiers.
  • Infrastructure presence: RIPE lists ONOFF TELECOM SAS as a member serving Belgium, Germany, Estonia, Spain, France, the United Kingdom and Italy. RDAP and BGP sources associate the organization with AS211948.

Control Surface

  • Number assignment: Onoff Business defines numbers as national numbering plan mobile telephone numbers assigned to users through the Management Console, giving the company and customer administrators control over assignment, reassignment and service lifecycle.
  • Business administration: The Management Console lets a company create an account, list employees, grant access to services and manage that access. That is a direct operational control point over business users and communications tools.
  • Communications data plane: The product surface carries calls, SMS, MMS, voicemails, recordings, call tags, call notes, transcriptions and reporting, making communications metadata and content handling part of the company control surface.
  • API and webhook surface: Onoff publishes webhook and API documentation for integrating call, SMS, voicemail, member, number and statistics data into customer systems, creating a programmable surface for access control and retention watch.
  • Internet routing surface: RIPE and public BGP sources associate ONOFF TELECOM SAS with AS211948. Changes to upstreams or advertised address space are relevant infrastructure watchpoints but not the main operating story.
  • Contract enforcement: Business terms allow ONOFF TELECOM to request business identity documents, delete non compliant accounts, invoice added services immediately and act on suspected illegal, fraudulent or abnormal use.

Watchpoints

  • Regulatory entity mapping: ARCEP numbering decisions reviewed refer to an operator named Onoff telecom with SIREN 799 270 160, while current ONOFF TELECOM SAS legal pages and French registry records use SIREN 832 235 253. Treat numbering block details as related regulatory context until the legal entity mapping is verified.
  • Carrier dependency: Business terms identify reliance on telephone networks, ONOFF service providers and the user or company mobile operator subscription. Outages, carrier changes or provider failures would directly affect reachability and call quality.
  • Routing footprint: Public BGP views differ on how much address space AS211948 currently originates. Future route announcements, prefix withdrawals or upstream changes should be monitored as infrastructure signals rather than proof of customer relationships.
  • API governance: The API and webhook layer can expose call, SMS, voicemail, member, number and statistics data to customer systems. Authentication, plan availability, logging and retention changes could materially alter risk.
  • Self reported scale: Onoff pages use different counts for licensing and number country coverage across pages and dates. Treat official country count claims as directional scale unless regulator level lists verify each jurisdiction.

Domain of operation

The company is tracked because it mediates a critical link between regulated telephone numbering and cloud-subscription services. For businesses it controls employee number assignment, communications metadata, and API conduits into internal systems. For consumers it gates secondary-number availability and continuity. Dependency on a single operator for these functions creates concentration risk, particularly around account enforcement, carrier outages, and governance of the programmable interface.

  • Public role: ONOFF TELECOM SAS is framed by the company is tracked because it mediates a critical link between regulated telephone numbering and cloud-subscription services. for businesses it controls employee number assignment, communications metadata, and api conduits into internal systems. for consumers it gates secondary-number availability and continuity. dependency on a single operator for these functions creates concentration risk, particularly around account enforcement, carrier outages, and governance of the programmable interface. and public infrastructure context. Evidence basis: Registry RDAP / WHOIS record; annuaire-entreprises.data.gouv.fr
  • Operating surface: Telecommunications and Europe provide the public context for this institution profile. Evidence basis: Registry RDAP / WHOIS record; annuaire-entreprises.data.gouv.fr

Timeline

  1. ONOFF TELECOM SAS public profile updated

    Public coverage records ONOFF TELECOM SAS as a subject for role, operating context, and evidence review.

Signal Map

Signal Map

  • Why tracked: The company is tracked because it mediates a critical link between regulated telephone numbering and cloud-subscription services. For businesses it controls employee number assignment, communications metadata, and API conduits into internal systems. For consumers it gates secondary-number availability and continuity. Dependency on a single operator for these functions creates concentration risk, particularly around account enforcement, carrier outages, and governance of the programmable interfac
  • Object role: ONOFF TELECOM SAS operates Onoff, a consumer secondary-number app, and Onoff Business, a business telephony platform. Through these products it assigns and manages National Numbering Plan mobile numbers, handles calls, SMS, voicemail, and recordings, and exposes webhook and API integration points. Its public infrastructure identity is tied to RIPE NCC membership and the AS211948 routing footprint.
  • Impact note: Operational decisions at ONOFF TELECOM—such as number revocation, API access changes, or carrier transitions—can disrupt business communications, alter data flows into CRM platforms, and affect consumer reachability across multiple countries. The visible internet-routing footprint is small but acts as a canary for service-layer reachability, while the ARCEP regulatory context ties numbering rights to a legal entity that may not perfectly match current registration records, introducing potential
  • Control surface: public operating records, official service pages, source-backed relationship updates
  • Key dependencies: official company sources, public registries, operator-published records

Public View

The public read of ONOFF TELECOM SAS is limited to visible role, operating context, and relationship evidence.

Watchpoints

  • New public role, affiliation, product, policy, or market disclosures.
  • Verified relationship changes involving named organizations or people.

Caveats

  • Private or unverified claims are excluded from this public view.

FAQ

Why is ONOFF TELECOM SAS included?

ONOFF TELECOM SAS has public evidence that makes the institution relevant to BTW's coverage of digital infrastructure, governance, or markets.

What is public about this profile?

The public layer covers visible role, operating context, linked organizations, and evidence-backed watchpoints.

What should readers watch next?

Readers should watch for source-backed role changes, new partnerships, regulatory exposure, operating expansion, or evidence that changes the public assessment.

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