Reseller Interface

What Reseller Interface does

ResellerInterface, operated by Greenmark IT GmbH, is a Germany-based white-label domain management platform founded in 2009 and headquartered in Alfeld, Lower Saxony. The company operates an ICANN-accredited registrar with direct connections to major registries including DENIC (.de), EURid (.eu), and nic.at (.at), enabling registration and management of over 700 domain extensions. Its technology stack centers on a proprietary domain management interface with a REST API for programmatic control, a Domain-Safe module providing AnyCast DNS and security add-ons, and direct SEDO marketplace integration for domain monetization. The platform is offered under a white-label model that allows resellers to rebrand the interface and resell domain services to their own customers without obtaining their own registry accreditation.

The company monetizes primarily through subscription-based, credit-funded domain registration, renewal, and management services, supplemented by tiered reseller packages scaled to portfolio size (from sub-250 domains to 10,000+). Go-to-market combines self-serve onboarding (free trial accounts, online top-ups) with sales-assisted consultation for enterprise clients and a channel-driven reseller program. Customer segments include individual domainers managing large portfolios, digital agencies managing client domains, and SMBs requiring registration without accreditation overhead; named brand-domain customers include McFit, Westfalia, Acer, Euronics, and JTL Software. Revenue is not publicly disclosed and the company remains privately held by its founders (Managing Directors Andreas Gundelach and Ali Jasarov), with no institutional funding to date.

Name

Reseller Interface

Legal name

Greenmark IT GmbH

Website

https://resellerinterface.com

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

11–50 employees

Short description

ResellerInterface, operated by Greenmark IT GmbH, is a Germany-based white-label domain management platform serving domainers, agencies, and resellers with registration, DNS, transfers, and marketplace integration across 700+ TLDs via ICANN-accredited infrastructure.

Ownership category

akta.pro rank

Product category

Domain Management Software

akta.pro primary industry

Channel/Partner Sales Support (Reseller Enablement, Deal Reg) (BPAAADAH)

Keywords

• Domain management software
• Domain registration services
• White-label reseller platform
• DNS management services
• ICANN accredited registrar

Headquarters

HQ city

Alfeld

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Domain Registration and Management: Revenue from domain registration fees, renewals, and management services. Customers purchase credit packages to pay for domains and services.
2. Reseller Packages: Tiered reseller accounts allowing partners to manage domains for their own customers under white-label arrangements. Pricing scales with portfolio size (250 to 10,000+ domains).
3. Domain-Safe Premium Services: Optional paid add-on module for enhanced domain security and AnyCast DNS services, bound to domain administration contract.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

ResellerInterface is a white-label domain management platform operated by Greenmark IT GmbH that enables domain registration, administration, transfer, and resale across 700+ TLDs. It provides ICANN-accredited registrar infrastructure with direct connections to registries (DENIC, EURid, nic.at), REST API automation, DNS configuration, AnyCast DNS, and customizable branding so agencies, domainers, and resellers can offer domain services under their own brand without needing their own accreditation.

Product overview

ResellerInterface is a unified white-label domain management platform operated by Greenmark IT GmbH. The core ResellerInterface product enables domain registration, administration, and resale with over 700 domain extensions available. Key modules include the Domain-Safe add-on with Premium AnyCast DNS for enhanced security, the REST API for programmatic automation, and white-label reseller packages with granular configuration options supporting custom branding. Additional services encompass domain transfer, DNSSEC, TLS/SSL certificates, dynamic DNS, 301 redirects, web hosting, and direct SEDO marketplace integration for domain sales. The platform serves domainers, agencies, entrepreneurs, and companies with scalable solutions from small portfolios to 10,000+ domains.

Differentiator

Problem solved

Functional benefit

Products and services

• ResellerInterface Platform White-label domain management platform enabling domain registration, administration, and resale for agencies, domainers, and resellers, with full automation, REST API access, DNS management, and customizable branding.
• Domain-Safe Fee-based security add-on module providing enhanced domain protection including Premium AnyCast DNS services, bound to the domain administration contract.
• REST API Application programming interface providing full programmatic control over domain registration, updates, and deletion for automated domain management workflows and custom system integration.
• White-Label Reseller Packages Configurable reseller account tiers (250 to 10,000+ domains) with white-label branding capabilities enabling partners to offer domain services under their own brand without separate accreditation.
• Domain Transfer Service Step-by-step guided domain migration service for quick and smooth domain transfers with error-free execution for complex transfers.
• Web Hosting Web hosting and server hosting services bundled with the domain services offering, with a 99% availability guarantee.

Quantifiable outcome

• Domain transfer completion in few clicks with guided process
• +1 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration13 records

AI capability2 records

Feature5 records

Partnerships

Nine partnerships are on record, tiered minor, core, major and supporting.

• FairCommerce (Händlerbund)minorOthers · 23 July 2015Member of the FairCommerce initiative since July 23, 2015, demonstrating commitment to fair e-commerce practices.
• DENIC eGcoreTechnology or IntegrationOfficial partner and connected registry for .de domain registrations. ResellerInterface acts as an intermediary between customers and DENIC for domain registration and management.
• ICANNcoreTechnology or IntegrationICANN Accredited Registrar enabling registration of generic top-level domains (gTLDs). Complies with ICANN policies including RDRP, ERRP, IRTP, UDRP, and URS.
• EURidcoreTechnology or IntegrationRegistry partner for .eu domain registrations, connected for domain registration and management services.
• nic.atcoreTechnology or IntegrationRegistry partner for .at (Austria) domain registrations, enabling Austrian domain services through the platform.
• SEDOmajorTechnology or IntegrationDirect integration with SEDO domain marketplace allowing users to list domains for sale without additional steps or redirects.
• OpenAIsupportingTechnology or IntegrationAI service used for generating domain suggestions based on user input and for developing proprietary solutions. Data processing agreement in place with Standard Contractual Clauses.
• CleverReachsupportingTechnology or IntegrationNewsletter dispatch service for email marketing campaigns, including tracking and conversion analysis.
• Brevo (Sendinblue)supportingTechnology or IntegrationAdditional email service provider for newsletter dispatch and campaign analytics.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Key-Systems: German registrar group operating reseller brands (including domainBox, BrandShelter) with white-label capabilities and direct registry access. Comparable as a European-focused, API-driven domain reseller platform serving the same agency and brand-protection use cases.
• HEXONET: ICANN-accredited registrar with a strong API-first, white-label reseller platform serving hosting providers and agencies. Directly comparable on technical API capabilities, registry breadth, and target customer profile.
• InterNetX: Germany-based ICANN-accredited registrar and white-label domain reseller platform serving agencies, resellers, and hosting providers across Europe. Closest direct competitor given overlapping target segments (agencies, resellers) and shared German registry relationships.
• Realtime Register: European registrar with API-centric and white-label reseller offerings focused on hosting providers and agencies. Closely comparable on target segment, technology stack, and European geographic focus.

Emerging players

• Porkbun: Independent ICANN-accredited registrar known for transparent pricing and developer-friendly API. Comparable as an API-led, customer-experience-focused alternative targeting SMBs and developers—overlapping with ResellerInterface's API and domainer use cases.

Broad incumbents

• Cloudflare Registrar: Cloud-first registrar offering at-cost domain registration tightly integrated with DNS, security, and CDN. Comparable as a competitive threat given its API-driven positioning, premium AnyCast DNS, and aggressive pricing—overlapping with ResellerInterface's DNS and security value proposition.
• Namecheap: Major global ICANN-accredited registrar competing on price, broad TLD inventory, and end-customer brand. Comparable as a domain registrar competitor, though it primarily serves end customers directly rather than white-label resellers.
• GoDaddy: Largest global registrar and hosting provider with broad portfolio including a reseller program. Comparable as the dominant scale competitor in domain registration, with overlap on hosting, TLS, and SMB/agency segments.
• CentralNic (now Team Internet / CentralNic Reseller): Large global registrar and registry operator with a dedicated reseller platform serving agencies and hosting companies. Compares on the white-label reseller motion, although it operates at much greater scale and with a broader portfolio including registry ownership.
• Tucows / OpenSRS: Public company and one of the largest wholesale domain resellers globally, serving ISPs, hosting providers, and agencies via the OpenSRS platform. Direct comparable on the B2B reseller/reseller-of-record business model, though at vastly larger scale.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/resellerinterface
• LinkedInlinkedin.com/company/resellerinterface

Compliance50 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 Reseller Interface