What Interstroom does

Interstroom informatietechnologie b.v. is a Dutch ICT services company founded in 1995 and headquartered in Hengelo, Overijssel, in the Twente region of the Netherlands. The company delivers a bundled portfolio of cloud, telephony, security, and connectivity services to primarily small and medium-sized businesses in the Netherlands, with secondary reach into large enterprises, education, and retail-center operators. Core offerings include the proprietary iVoIP Cloud Telefonie hosted PBX platform (up to 100 concurrent calls, fixed-mobile SIM integration, SIP trunking, conference calling, call recording), Hosted Desktop and Hosted Exchange (Microsoft-based), NextCloud Hosting and Kerio Connect as hosted email/collaboration alternatives, web hosting and VPS, managed firewalls (MikroTik and SecurePoint UTM), SSL certificates, spam/virus filtering, encrypted file transfer (FileCap), online backup, and business connectivity over fiber, VDSL/ADSL, and 4G.

The technology stack is built on Proxmox virtualization and Microsoft-based hosted environments, delivered from Dutch datacenters (Equinix Enschede and NorthC Delft) to support GDPR/AVG compliance and 99.99% availability for hosted exchange. Revenue is generated primarily through recurring subscriptions (VoIP per-seat, hosting per-user tiered at €25-€56/month for web hosting), managed services, hardware resale (Snom, Gigaset, MikroTik, Teltonika, Terra), and professional services, with quote-based pricing for enterprise deployments. Distribution combines a direct sales motion, product demonstrations, and a white-label reseller partner program covering VoIP, hosted security, NextCloud hosting, and managed firewalls.

Beyond its core Dutch ICT business, Interstroom operates Centre Management Software, a SaaS platform for retail outlet centers deployed internationally across the Netherlands, Spain, Czech Republic, and Sweden. The company is privately held with no disclosed funding, ACM registration, and a broad partner ecosystem including Proxmox (Silver reseller), MikroTik, ESET, Snom, Counterpath Bria, SecurePoint, Sectigo/GeoTrust, and others.

Name

Interstroom

Legal name

Interstroom informatietechnologie b.v.

Website

https://interstroom.nl

Company type

Private

Founded year

1995

Operating status

Operating

Headcount range

11–50 employees

Short description

Interstroom informatietechnologie b.v. is a Dutch ICT services company founded in 1995, delivering bundled cloud hosting, hosted VoIP telephony, managed security, and connectivity solutions primarily to SMBs from Dutch datacenters.

Ownership category

akta.pro rank

Product category

Managed Cloud ICT Services

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518)

SIC

Services-Computer Programming, Data Processing, Etc. (7370), Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Multi-Cloud Connectivity & Cloud Exchange Platforms (HDABALAG)

akta.pro secondary industries

Cloud Connectivity & Interconnect (Cloud On-Ramps, IX, Cross-Connects) (HDAIAFAF), Carrier-Neutral Interconnect & Meet-Me Room (MMR) Services (HDABALAD)

Keywords

• Hosted VoIP telephony
• Managed cloud services
• Business connectivity solutions
• Managed network security
• Cloud hosting services

Headquarters

HQ city

Hengelo

HQ country

Netherlands

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Infrastructure, Operations, Marketing or Sales, Supply Chain

Revenue model

1. Cloud Services Subscription: Recurring subscription revenue from hosted desktop, hosted exchange, VPS hosting, and cloud storage services. Billed monthly per user or service tier.
2. VoIP Telephony Services: Monthly subscription for iVoIP cloud telephony including per-seat pricing and optional add-ons like SIP trunking and mobile integration.
3. Web Hosting: Tiered hosting packages (Small €25/mo, Medium €36/mo, Large €56/mo) with additional enterprise custom packages.
4. Managed Security Services: Recurring revenue from managed firewalls, VPN boxes, spam/virus filtering, and online backup services.
5. Connectivity Services: Internet connectivity including business fiber, VDSL, ADSL, and 4G services with various SLA levels.
6. Hardware Sales: Sale of IP phones (Snom), wireless devices (Gigaset), routers (MikroTik, Teltonika), and related hardware.
7. Professional Services: IT consultancy, project management, network installation, security audits, and ICT scans.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

Interstroom is a Dutch managed ICT services provider that delivers a full-stack portfolio built around its proprietary iVoIP cloud telephony platform, complemented by hosted cloud desktop and Microsoft Exchange services, web/VPS hosting, managed firewalls and UTM security, encrypted online backup, and business connectivity (fiber, DSL, 4G, VPN). Services are delivered from own infrastructure in Dutch datacenters in Enschede and Delft, with primary focus on SMBs in the Twente region and national reach through a white-label reseller network.

Product overview

Interstroom is a Dutch IT services company (informatietechnologie bv) based in Hengelo, Twente, offering a comprehensive portfolio of ICT services since 1995. The core offering consists of cloud-based communication and infrastructure services: iVoIP Cloud Telefonie (hosted VoIP PBX with SIP trunking), Hosted Desktop (Microsoft-based cloud workstations), and cloud hosting services (VPS, webhosting, NextCloud, Kerio Connect). Security offerings include Managed Firewalls (MikroTik, SecurePoint UTM), SSL certificates, spam/virus filtering, and Online Backup. The company also provides connectivity solutions (fiber, DSL, 4G) and specialized SaaS like Centre Management Software for retail centers. Products are delivered through Dutch datacenters (Equinix Enschede, NorthC Delft) with a focus on SME businesses.

Differentiator

Problem solved

Functional benefit

Products and services

• iVoIP Cloud Telefonie Hosted VoIP phone system providing a complete cloud-based PBX with up to 100 simultaneous calls, unlimited voicemail, call recording, video calling, IVR menus, conference calling, and integration with mobile via proprietary SIM card. Targeted at Dutch SMBs and enterprises seeking a full-featured business telephony solution.
• iVoIP Lite Budget VoIP solution for small businesses and freelancers (ZZP) with up to 4 phone numbers on one device, basic features, and web interface configuration.
• iVoIP SIP Trunk SIP trunking service allowing connection of physical PBX systems (Panasonic, Siemens, Avaya, 3CX) to VoIP with up to 100 simultaneous voice channels. Targeted at organizations with existing PBX infrastructure seeking VoIP-grade connectivity.
• Hosted Desktop Complete cloud desktop solution based on Microsoft technology, providing 100% cloud-based workstation with Office Basic, 100GB shared storage, and personal 30GB storage, accessible from any location with internet connectivity.
• Hosted Exchange Microsoft Exchange email hosting service with 99.99% availability guarantee (achieved through multi-datacenter redundancy in Dutch facilities), included free Outlook license, and calendar sharing capabilities.
• Centre Management Software Online SaaS platform for managing outlet and shopping centers, providing insights into store performance, big-data analysis, marketing tools, and trend registration. Used by Bataviastad, Rosada (Netherlands), Festivalpark (Spain), Fashion Arena (Czech Republic), and Hede Fashion Outlet (Sweden).
• NextCloud Hosting Private cloud storage and file-sharing solution with end-to-end encryption, two-factor authentication, secure file sharing, calendar and contact sync, and Microsoft Outlook integration. Holds an A+ security rating from NextCloud Security Scans.
• Kerio Connect (Hosted) Hosted messaging and collaboration solution alternative to Office 365 and Google Workspace, providing email, chat, calendar, tasks, notes, and contacts with mobile device support.
• Webhosting Tiered web hosting packages (Small, Medium, Large) with Plesk control panel, email accounts, MySQL/MariaDB databases, PHP support, and optional SSL certificates. Priced from €25 to €56 per month.
• VPS Hosting Virtual Private Server hosting with customizable configurations of RAM, disk space, CPU cores, operating system, backups, snapshots, and managed options, built on Proxmox virtualization in Dutch datacenters.
• Online Backup in de Cloud Encrypted cloud backup service for computers, servers, and devices with AES-256 encryption, automatic backup scheduling, and ransomware protection, delivered from the Dutch datacenter in Enschede.
• SecurePoint NextGen UTM Firewall Next-generation UTM firewall as a managed service, providing content filtering, threat protection, SSL inspection, VPN gateway, dual virus scanners, spam filter, and intrusion detection.
• Managed Firewall On-Premise On-premises managed firewall solution available in Lite and Pro versions, including VPN, WiFi access-point integration, proactive monitoring, and automatic replacement on defects.
• Zakelijk Glasvezel (Business Fiber) Business fiber internet with symmetrical speeds up to 1 Gb/s, redundant connections, delivered across networks from Eurofiber, KPN, and Ziggo.
• VDSL en ADSL Business DSL connectivity with download speeds up to 100 Mb/s, available nationwide, with optional services such as Pinnen over IP.
• Zakelijk 4G Internet Business 4G internet for primary or backup connectivity, with speeds up to 100 Mb/20 Mb, data bundles from 200GB to 1TB, and a 99.8% uptime guarantee.
• VPN Verbindingen Ethernet and mobile VPN solutions for connecting multiple office locations and enabling secure remote work via laptops, tablets, and phones.
• Spam en Virus Filtering Cloud-based email filtering service that blocks spam and viruses before reaching mail servers, with blacklist/whitelist interface and a free 30-day trial.
• FileCap Secure File Transfer Secure file transfer solution for encrypted sending and receiving of files and emails, with Outlook plugin, Windows integration, and GDPR/AVG compliance.

Quantifiable outcome

• 99.99% availability for Hosted Exchange services
• +2 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

Feature4 records

Partnerships

16 partnerships are on record, tiered minor and core.

• TP-LinkminorChannel Partner/ Reseller/ DistributorTP-Link partner providing professional Omada WiFi networking solutions. Interstroom offers WiFi measurements and network design as part of connectivity services.
• MikroTikcoreChannel Partner/ Reseller/ DistributorInterstroom has multiple certified MikroTik engineers and offers MikroTik products including routers, switches, firewalls, and access points. Provides official MikroTik training and certification in Twente.
• ProxmoxcoreChannel Partner/ Reseller/ DistributorOfficial Proxmox Silver reseller status. Offers Proxmox VE virtualization platform, installation, configuration, and ongoing management services.
• ESETcoreChannel Partner/ Reseller/ DistributorOfficial ESET partner providing ESET PROTECT security solutions. Interstroom manages security services for customers including anti-malware, anti-phishing, and cloud sandboxing.
• SectigominorChannel Partner/ Reseller/ DistributorSSL certificate provider offering DV, OV, and EV certificates with insurance guarantees up to $100,000.
• GeoTrustminorChannel Partner/ Reseller/ DistributorSSL certificate provider offering enterprise-grade certificates with insurance guarantees.
• SnomcoreChannel Partner/ Reseller/ DistributorSnom partner providing IP desk phones for VoIP solutions. Interstroom offers range of Snom models from entry to premium level.
• Counterpath (Bria)coreChannel Partner/ Reseller/ DistributorPremium partner for Counterpath Bria softphone solutions. Provides desktop and mobile softphone applications with HD voice, video, and presence features.
• FileCapcoreChannel Partner/ Reseller/ DistributorFileCap partner providing encrypted file sharing and email encryption solutions. Interstroom offers installation, cloud hosting, and user training for FileCap.
• YoufoneminorChannel Partner/ Reseller/ DistributorYoufone Business Partner providing mobile SIM-only services on KPN network. Offers flexible business mobile plans with shared data bundles.
• Terra Computers (Wortmann)minorChannel Partner/ Reseller/ DistributorTerra Cloud Partner offering laptops, desktops, servers, NAS, and monitors from German manufacturer Wortmann. German quality at competitive pricing.
• Teltonika NetworksminorChannel Partner/ Reseller/ DistributorPartner providing 4G and 5G routers, gateways, and IoT solutions from Lithuania-based manufacturer. Focus on wireless connectivity and telematics.
• Kerio (GFI Software)coreTechnology or IntegrationProvides hosted Kerio Connect messaging and collaboration solution. Alternative to Microsoft Exchange and Office365 with mail, calendar, contacts, chat, and mobile sync.
• EquinixcoreTechnology or IntegrationDatacenter provider with facility in Enschede (former bank building) providing high-security hosting for Interstroom's cloud infrastructure.
• Nederland ICTminorStrategic or Co-development PartnerNederland ICT Voorwaarden 2014 applied to all offers, deliveries, agreements, and transactions.
• SecurePointcoreChannel Partner/ Reseller/ DistributorProvides SecurePoint NextGen UTM Firewall solutions including firewall, VPN, dual virus scanners, spam filter, and content filtering.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Hostnet: Dutch web hosting, domain, and email provider. Directly comparable to Interstroom's web hosting, VPS, Hosted Exchange, and SSL offerings, also serving Dutch SMB customers with similar pricing tiers.
• RingCentral: Global cloud UCaaS/VoIP platform. Direct peer for Interstroom's iVoIP cloud telephony product, competing for SMB and mid-market hosted PBX customers with similar feature sets (IVR, call recording, mobile integration).
• 8x8: Cloud communications platform providing VoIP, contact center, and UCaaS. Directly comparable to Interstroom's iVoIP telephony in customer type (SMB/mid-market) and core functionality, though at much larger international scale.
• Solcon: Dutch ISP and hosting provider serving SMBs across the Netherlands with broadband, VoIP, and cloud hosting. Direct regional competitor with comparable target customers and bundled connectivity/telephony offerings.
• Hetzner: European cloud and hosting provider with strong presence in Germany/Netherlands. Direct peer for Interstroom's VPS, dedicated hosting, and cloud infrastructure offerings, particularly relevant for EU-based customers seeking non-US data residency.

Regional players

• Coolblue Business: Dutch SMB-focused IT hardware, services, and connectivity provider. Comparable in serving Dutch SMBs with bundled connectivity/IT services, though anchored in hardware retail rather than cloud communications.
• Proximus: Belgian incumbent telecom offering connectivity, cloud, and UCaaS. Comparable in product breadth and SMB targeting, but operating in Belgium rather than directly competing with Interstroom in the Netherlands.

Broad incumbents

• KPN: Largest Dutch incumbent telecom providing fiber, DSL, mobile, cloud, and hosted communications. Competes across nearly every Interstroom category at national scale, though as a broad incumbent rather than a niche SMB specialist.
• VodafoneZiggo: Major Dutch broadband and mobile provider. Overlaps with Interstroom's connectivity and SMB telephony services as a national incumbent offering a wider product portfolio.
• Microsoft (Microsoft 365 Business Voice / Teams Phone): Hyperscaler offering Teams Phone, Microsoft 365, and Azure cloud services that Interstroom integrates with and competes against. Interstroom already offers Direct Routing and Hybrid Teams integration as a partner, making Microsoft both ally and competitor.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/interstroom
• Xx.com/interstroom

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Interstroom