Insights

SEO Foundation Onder positions itself as a 100% SEO-focused advertising services provider, indicating a sales opportunity to upsell advanced SEO strategy, ongoing optimization packages, and performance reporting to clients seeking measurable organic growth.

Transparency Promise The emphasis on a pre-agreed, transparent workflow suggests a buyer segment that values clear milestones and predictable ROI, making it suitable to propose structured monthly retainers, service level agreements, and detailed KPI dashboards.

Small to Mid-Sized With 11-50 employees and revenue in the low seven figures, Onder targets SMBs; sales conversations can focus on scalable SEO solutions, onboarding support for mid-market clients, and cost-effective performance-focused packages.

Digital Stack Current tech stack includes Yoast SEO, Google ecosystems, and analytics tools, presenting an opportunity to propose complementary SEO automation, technical audits, and integration services that enhance existing tooling.

Growth Enablement Given the newsletter offering and growth-oriented messaging, there is potential for cross-sell of content-led marketing services, ongoing education programs, and performance-driven campaigns to expand client engagement.

Onder Tech Stack

Onder uses 8 technology products and services including jsDelivr, Brevo, Elementor, and more. Explore Onder's tech stack below.

  • jsDelivr
    Content Delivery Network
  • Brevo
    Live Chat
  • Elementor
    Page Builders
  • Priority Hints
    Performance
  • Yoast SEO
    Search Engines
  • Google
    Search Engines
  • Piwik PRO Core
    Web Analytics
  • Gravity Forms
    Web Platform Extensions

Media & News

Onder's Email Address Formats

Onder uses at least 1 format(s):
Onder Email FormatsExamplePercentage
First@onder.nlJohn@onder.nl
100%

Frequently Asked Questions

Where is Onder's headquarters located?

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Onder's main headquarters is located at 95 Hanzelaan Zwolle, Overijssel 8017 je Netherlands. The company has employees across 2 continents, including EuropeAsia.

What is Onder's stock symbol?

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Onder is a publicly traded company; the company's stock symbol is SONDW.

What is Onder's official website and social media links?

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Onder's official website is onder.nl and has social profiles on LinkedIn.

What is Onder's SIC code NAICS code?

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Onder's SIC code is 8742 - Management Consulting Services NAICS code is 541613 - Marketing Consulting Services.

How many employees does Onder have currently?

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As of May 2026, Onder has approximately 29 employees across 2 continents, including EuropeAsia. Key team members include Technisch Seo / Cro Specialist: C. B.Owner: O. M.Business Development Manager: B. V. H.. Explore Onder's employee directory with LeadIQ.

What industry does Onder belong to?

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Onder operates in the Advertising Services industry.

What technology does Onder use?

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Onder's tech stack includes jsDelivrBrevoElementorPriority HintsYoast SEOGooglePiwik PRO CoreGravity Forms.

What is Onder's email format?

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Onder's email format typically follows the pattern of First@onder.nl. Find more Onder email formats with LeadIQ.

When was Onder founded?

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Onder was founded in 2019.
Onder logo

Onder

Advertising ServicesOverijssel, Netherlands11-50 Employees

Onder is a Netherlands-based advertising services company whose core offering centers on search engine optimization as the foundation of a website and its online marketing mix. It helps client websites grow through clear, forward-looking SEO guidance while keeping clients in control of the process via a pre-arranged, transparent workflow. With a strictly SEO-focused approach, the firm aims to address a range of SEO questions for its clients and operates from Zwolle in Overijssel.

Its target customers include entrepreneurs, marketing managers, and marketers seeking structured SEO support and ongoing optimization. The company also provides a monthly newsletter named OnderBouwing to share core SEO tips with subscribers.

Section iconCompany Overview

Headquarters
95 Hanzelaan Zwolle, Overijssel 8017 je Netherlands
Website
onder.nl
SIC Code
8742 - Management Consulting Services
Stock Symbol
SONDW
NAICS Code
541613 - Marketing Consulting Services
Founded
2019
Employees
11-50

Section iconMedia & News

Section iconFunding & Financials

  • $1M

    Onder's revenue is estimated to be in the range of $1M

Section iconFunding & Financials

  • $1M

    Onder's revenue is estimated to be in the range of $1M

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