Onder

Zwolle-based specialist SEO agency that focuses only on visibility in Google and AI answers.

Zwolle, Netherlands · Specialist SEO agency

Overview

Zwolle-based specialist SEO agency that focuses only on visibility in Google and AI answers. Combines technical SEO, content, digital PR and GEO in one approach, and also runs SEO training and conversion work.

Services

Technical SEOCrawling, indexing, site speed and architecture
SEO AuditsOne-off diagnostic reviews
Website Migration SEORedesigns, replatforming and domain moves
Digital PREarned coverage and editorial links
Link AcquisitionLink building and outreach
AI Search VisibilityGenerative search and AI answer visibility, when offered. Outcomes cannot be guaranteed.

Case studies

SEO migration for Zehnder

more than 9% more clicks for the Dutch domain

Migration project where traffic and rankings were largely preserved; Dutch domain clicks rose while impressions lagged.

Client: Zehnder
Services: Website Migration SEO
Period: 23-3 to 22-7 as stated
Metric: clicks (Search Console)

Agency-reported result

Results are the agency's own account and are not independently verified. Traffic growth is not revenue growth.

Locations

Hanzelaan 95, 8017 JE Zwolle, Overijssel, NetherlandsHeadquarters · Published business address; staffed office not verified · Zwolle directory

Sources & verification

Business identity checked. An editor confirmed the business operates under this name and official website. It does not assess quality.
Website checked. At least one listed claim matched the agency's own website on the review date.
Business address checked. A street address is printed on the agency's own website and was matched there. A published address does not by itself show a staffed office.
Case-study source checked. The linked case-study page exists and contains the claim as summarised. Results remain agency-reported unless marked corroborated.

Pages used for this profile (8)

Detail	Page	Status
Service: Technical SEO Technische SEO is de fundering van je vindbaarheid.	onder.nl/diensten/technische-seo	Matched 16 Oct 2026
Service: SEO Audits Onze SEO audit geeft antwoord op vragen als: hoe goed wordt de website van jouw bedrijf gevonden?	onder.nl/diensten/seo-audit	Matched 16 Oct 2026
Service: Website Migration SEO Een goede SEO-migratie voorkomt dat je zichtbaarheid verdwijnt.	onder.nl/diensten/seo-migratie	Matched 16 Oct 2026
Service: Digital PR Digital PR: van links inkopen naar links verdienen	onder.nl/diensten/digital-pr	Matched 16 Oct 2026
Service: Link Acquisition Linkbuilding geeft de doorslag om je domein beter te laten ranken.	onder.nl/diensten/linkbuilding	Matched 16 Oct 2026
Service: AI Search Visibility Met AI SEO optimalisatie vergroot je de zichtbaarheid van je merk in AI-antwoorden.	onder.nl/diensten/ai-seo	Matched 16 Oct 2026
Address: Zwolle Hanzelaan 95, 8017 JE Zwolle	onder.nl/contact	Matched 16 Oct 2026
Case study: SEO migration for Zehnder Voor het Nederlandse domein zien we een toename van ruim 9% clicks in de periode 23-3 tot 22-7.	onder.nl/cases/seo-migratie-voor-zehnder	Matched 16 Oct 2026

Last reviewed 16 Oct 2026. Report a correction · What the labels mean