Company snapshot
| Category | AT&T | CDNSun |
|---|---|---|
| Status | active | active |
| Founded | — | — |
| Headquarters | — | — |
| Website | — | — |
| Docs | — | — |
Overview
AT&T operates a content delivery network (CDN) as part of its telecommunications portfolio, leveraging its global network infrastructure to deliver content for enterprise and media customers. The CDN focuses on video streaming, live events, and secure content delivery, utilizing AT&T’s extensive fiber and 5G networks. It serves large organizations, including broadcasters and businesses requiring high-bandwidth applications. The service integrates with AT&T’s broader connectivity offerings, such as private networking and cloud solutions. As of 2025, AT&T continues to expand its fiber footprint, aiming to reach over 50 million locations by 2029.
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
AT&T’s CDN operates across 38 data centers globally, with points of presence (POPs) in North America, EMEA, APAC, and LATAM. It leverages the company’s telecom backbone, including its fiber-optic and 5G networks, for low-latency content delivery. The network is optimized for video streaming and live events, with strong peering agreements with major ISPs. Its North American presence is particularly robust, though its coverage in emerging markets like Africa and parts of Asia is less extensive compared to competitors like Cloudflare or Akamai. The architecture emphasizes integration with AT&T’s private network services for enterprise clients.
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.
Feature comparison
| Feature | AT&T | CDNSun |
|---|---|---|
waf | ✓ | ✗ |
bot_mitigation | ✗ | ✗ |
ddos | ✓ | ✗ |
rate_limit | ✗ | ✗ |
http3_quic | ✗ | ✓ |
tls13 | ✗ | ✓ |
tiered_cache | ✗ | ✗ |
origin_shield | ✗ | ✗ |
instant_purge | ✓ | ✓ |
stale_while_revalidate | ✗ | ✗ |
stale_if_error | ✗ | ✗ |
image_optimization | ✗ | ✗ |
video_vod | ✓ | ✓ |
video_live | ✓ | ✓ |
drm | ✗ | ✗ |
hls_dash_packaging | ✗ | ✗ |
websockets | ✗ | ✗ |
signed_urls | ✗ | ✗ |
edge_compute | ✗ | ✗ |
functions | ✗ | ✗ |
kv_storage | ✗ | ✗ |
api_first | ✓ | ✓ |
realtime_logs | ✓ | ✓ |
log_push | ✗ | ✗ |
terraform | ✗ | ✗ |
Legend: ✓ = Supported, ✗ = Not supported, — = Not listed
Pricing
AT&T’s CDN pricing is enterprise-only, with custom contracts based on bandwidth, storage, and service level agreements. No public per-GB pricing is available, and there is no free tier or pay-as-you-go option. Pricing details require direct contact with AT&T’s sales team, as no dedicated pricing page is publicly accessible.
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
AT&T’s CDN offers an API-first interface for configuration and monitoring, with real-time log access for analytics. Documentation is available but lacks support for Terraform or other infrastructure-as-code tools. SDKs are limited, and there’s no mention of CI/CD integrations or migration tools. The focus is on enterprise workflows, with less emphasis on developer-centric features compared to providers like Fastly or Cloudflare.
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
- Enterprises needing a telecom-backed CDN integrated with private networking or 5G for secure, high-bandwidth content delivery.
- Media companies requiring robust video-on-demand and live streaming with global reach and DDoS protection.
- Organizations already using AT&T’s connectivity services, seeking seamless CDN integration.
- 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
- Small businesses or developers looking for pay-as-you-go pricing or a free tier, as AT&T targets enterprise clients.
- Users needing advanced edge compute, image optimization, or developer-centric tools like Terraform support.
- Customers prioritizing extensive POP coverage in Africa or smaller APAC markets, where AT&T’s presence is limited.
- 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.
History & Notes
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