Spain is an open market that runs on disclosed repricing. On the .es active-domains book, hosting-relationship concentration — hosting competitors only, with CDN, SaaS-builder and DNS-infrastructure actors excluded — is an HHI of just 497, about 20.1 effective owners of the customer relationship. The interesting number here is not who owns the market but what the market openly charges in year two. The words buyers type are alojamiento and hosting.
“Concentration” is three different questions, and they have three different answers. Hosting-relationship HHI (497) measures economic market power — who owns the customer relationship — counting hosting competitors only. Hosting-infrastructure HHI (599) measures where the workloads actually run. Control-plane HHI (478) measures the combined ecosystem, and deliberately includes CDN, SaaS-builder and DNS-infrastructure actors alongside hosting groups.
Read as market power, Spain runs on about 20.1 effective owners of the customer relationship; read as infrastructure, the same book spreads across about 16.7 effective hosting infrastructures — the reverse of the usual gap: at 0.8× the customer book is spread across MORE owners than there are infrastructures, the signature of many small brands reselling on a smaller number of platforms. The share readings sit close together here: the top three owners hold 29.2% of customer relationships, while the top three infrastructures carry 33.7% of the workloads, and on the wider control plane — which also counts CDN, SaaS-builder and DNS actors — the top three come to 31.1%.
Teaser pricing is not a trick in Spain, it is the published model: 94% of tracked storefronts acquire on it, and storefronts serving 96.7% of captured relationships state the renewal price on the page — the discount and the price it runs out to are advertised together. Buyers are told about the 4.5× step up; the open question is how many read it.
All three readings are drawn from the .es active-domains book (633,364 active domains) and are ownership-folded — a lower bound. Each reading is renormalised over its own actor set. How the bands and the three readings work.
Across the 240,447 active Spanish business sites whose pages we measure and fingerprint: 34.0% carry e-commerce tooling, 52.5% run analytics, and 2.1% sit on a detected website builder. Off the web layer, 10.0% of the full Spanish book runs modern hosted email.
Presence, not billing; the builder share is a floor. How technology detection works.
Of the 687,328 mail-carrying business domains, 92.5% publish SPF but only 24.4% do so with a spoof-rejecting hard fail. 57.7% publish DMARC — 3.7% with an enforcing p=reject, 40.1% monitoring-only p=none, both shares of the same mail-carrying book, so enforcement reaches 17.6% of it. Adoption is not enforcement. How to read email posture.
Across 16 tracked Spanish storefronts, the median entry-tier price is €2.62/mo ex-VAT. Weight the same storefronts by how many businesses each platform actually serves and the price the average Spanish customer meets is €1.49/mo — below the storefront median: among the storefronts we price, which together hold 17% of this market's hosting relationships, the larger platforms price below the field.
— a floor, since storefronts that never disclose a renewal price sit in the denominator.
The median measured renewal cliff in Spain is 4.5× — the typical teaser storefront re-prices 4.5-fold at the first renewal — and the steepest measured cliff in the market is 26.3×. Storefronts serving 96.7% of captured Spanish customer relationships publish a renewal price we can read against the first-year price. 1 further storefront states a renewal we cannot yet read that way, and holds too little of this market to move the share either way. Per-operator price ladders are in the product.
The tracked set represents 47.1% of the Spanish control-plane customer relationships. Price snapshot 2026-09-14; prices are captured on their own cadence. How prices are captured, normalised and suppressed.
Spanish businesses search both alojamiento and the English hosting, and the storefronts sell on the same two words plus the qualities beside them — rápido, seguro, profesional.
Measured from Spanish storefronts, sized by how many providers use each term.
The two terms buyers search most: alojamiento / hosting. How this is measured.
Every figure here is queryable through the HostingBrain connector, free tier. In Claude or any MCP-compatible assistant, this is the whole page in one prompt:
“Using HostingBrain, describe the Spain hosting market: how concentrated is it — give me the actor-pure hosting-relationship HHI and effective owners for market power, and the hosting-infrastructure and control-plane readings beside it, ownership-folded — how large is the active-domains book, what do businesses run (CMS / e-commerce / builder adoption), what does entry shared hosting cost and how steep are renewal cliffs, and what is the SPF/DMARC posture? Keep it aggregate-level.”
Ask the follow-up yourself. HostingBrain answers questions like this — with the date, denominator and caveats attached — inside Claude and any MCP-compatible assistant. Named provider shares and per-operator price ladders are on Pro.