Overview

CDNSun, founded in 2012, is a content delivery network provider based in Prague, Czech Republic. It offers services like website acceleration, video streaming, and software delivery through a network of over 50 points of presence (PoPs) worldwide. Its customer base includes businesses seeking cost-effective CDN solutions, particularly small to medium-sized enterprises. CDNSun emphasizes affordability with a pay-as-you-go model and a 15-day free trial. The service supports HTTP/2 and provides free shared SSL on its *.r.worldssl.net domain.

Network & Architecture

CDNSun operates more than 50 PoPs across five continents, including locations in North America (e.g., Atlanta, Chicago, Dallas), Europe (e.g., Amsterdam, Frankfurt, London), Asia (e.g., Hong Kong, Singapore, Tokyo), South America (e.g., Sao Paulo), and Australia (e.g., Sydney). All edge servers use SSD drives for faster data access and have redundant connectivity to robust internet networks. The network supports global content delivery with a focus on reducing latency for websites and streaming services. Specific routing or peering details are not publicly disclosed, but the provider claims strong performance for global audiences.

Features

CDNSun provides video-on-demand (video-vod) and live streaming (video-live) with RTMP ingest (rtmp-ingest) for real-time video delivery. It supports HTTP/3 (http3) and TLS 1.3 (tls1-3) for improved performance and security. Instant purge (instant-purge) allows quick cache invalidation. Real-time logs (realtime-logs) and an API-first (api-first) approach enable detailed monitoring and programmatic control. The service supports multiple CDN models, including origin pull, origin push, and live streaming.

Pricing Snapshot (2025-08-16)

CDNSun uses a pay-as-you-go (payg) model with no monthly or setup fees. A 15-day free trial (free-tier) is available for all services. Pricing is transparent, with custom options for high-volume users, but specific per-GB rates are not publicly listed. SMB-friendly pricing targets smaller businesses. The official pricing page is https://cdnsun.com/pricing/.

Integrations & DevEx

CDNSun offers an API-first approach for managing CDN services, including access to real-time logs. It provides integration support via a dashboard and API, with 24/7 technical support through email, phone, and live chat. No specific Terraform or CI/CD integrations are documented. The service includes tools for testing performance gains, such as ping tests and downloadable test files (1 MB and 20 MB).

When it fits / When it doesn’t

When it fits:

  • Small to medium-sized businesses needing affordable, pay-as-you-go CDN services with a free trial.
  • Companies targeting global audiences with video streaming or software delivery needs.
  • Developers seeking an API-driven CDN with real-time logs for monitoring.

When it doesn’t:

  • Enterprises requiring advanced security features like WAF, DDoS protection, or bot mitigation.
  • Businesses needing specialized edge compute, key-value storage, or advanced video features like DRM.
  • Users prioritizing extensive integrations with Terraform, CI/CD pipelines, or specific cloud platforms.