Diadem
Diadem is a web hosting provider based in Kolkata, India. As of 2026 it holds an HRI of 72/100, a solid signal, ranked independently by HostList with no paid placements.
Diadem Technologies offers a range of web hosting services, including shared hosting, VPS, WordPress hosting, and managed cloud services. With over 20 years of experience, the company is recognized for its reliable infrastructure and is ISO 27001 certified, ensuring a high standard of security and data management. Their managed cloud services cater to businesses looking for scalable and efficient hosting options. Diadem is suitable for small to medium-sized enterprises seeking dependable hosting services with a focus on security and performance.
Measured on this provider's public website, not customer sites on their platform.
We are manually deploying identical test website instances across the top 200 hosts by HRI rank. Rollout details.
How we measure this →Before You Sign Up
Promoted placement. Does not affect HRI, ranking order or eligibility.
What Diadem Discloses
Facts the company has published and HostList has verified. Blanks are informative: a question a host has not answered cannot be answered on its behalf. Completeness measures how much this host discloses, not how good it is.
Diadem has not disclosed any facts yet. Pricing transparency, refund window, uptime SLA and data residency are among the 30 questions still unanswered. HostList verifies every disclosure and never charges for it.
Claim profile to discloseView the 30 questions we ask
- Entry plan price
- Refund window
- Site migration
- Verified coupon
- Status page
- Incident history feed
- Uptime SLA
- Ownership
- Legal entity
- Data residency
- GDPR DPA
- Datacenter regions
- Server stack
- Storage
- Security included
- Security contact
- Certifications
- Data centre model
- Backups
- Support
- Support languages
- Published plans
- Resource limits
- Renewable energy
- Description
- Logo
- Founded
- Social profiles
- YouTube
- Changelog
What Customers Say About Diadem
Share Your ExperienceAggregate scores sourced from third-party review platforms. The quotes below are stored excerpts, linked back to their source; click through to read each one in full.
Waiting on data
HostList only shows what it can verify. Each of these sections appears the moment the data exists.
Interview
No WP Legends interview recorded with Diadem.Deals
No active deals. Deals appear once Diadem claims this profile and posts them.Claim to post dealsRankings
Not yet ranked in a category. Rankings are computed, never paid.Frequently Asked Questions About Diadem
Is Diadem a good web hosting company?
Diadem has a HRI™ of 72/100 on HostList.io with a Google rating of 4.9/5 from 156 reviews, placing it among the better-rated providers in its category. HRI (HostList Ranking Index) is calculated algorithmically from trust signals, profile completeness, data freshness, and performance data, no provider can pay to improve it. A score of 70–79 indicates a solid provider with good trust signals.
What type of hosting company is Diadem?
Diadem is classified as a dedicated web hosting company on HostList.io. Use the HostMatch™ tool at hostlist.io/match to describe your project requirements and get a ranked recommendation from 30,000+ hosting providers including Diadem.
Where is Diadem based?
Diadem is headquartered in Kolkata, India. Hosting companies based in India are listed at hostlist.io/hosting/india.
How does Diadem compare to other web hosting companies?
Diadem can be compared to any other hosting provider using HostList.io's side-by-side comparison tool at hostlist.io/compare. The tool shows both providers' HRI™ breakdowns, sub-scores (Trust, Completeness, Freshness, Performance), and review data side by side. Diadem has a current HRI of 72/100.
Does Diadem offer coupons or discounts in September 2026?
Diadem has no HostList-verified coupon code right now. Hosting providers commonly discount the first term of shared and WordPress plans, with the lowest prices on longer billing cycles. For codes checkout-verified across the market this month, see hostlist.io/deals/web-hosting-coupons, updated continuously.
What's Happening at Diadem
Diadem Technologies acquires Catchcal web hosting and domain services ... We are delighted to announce the successful completion of the acquisition of Catchcal.
This month, we just finished adding a whole fleet of new servers (16 new nodes to be exact) to our ever-increasing hardware deployments, buoyed by strong
How Diadem's Score Is Calculated
HRI is calculated algorithmically based on publicly available data. It considers trust signals (reviews, ratings), data completeness, freshness of information, and technical performance. No host can pay to improve their score.
Full methodology →