Company snapshot
| Category | Level3 | Universal CDN |
|---|---|---|
| Status | defunct | active |
| Founded | — | — |
| Headquarters | — | — |
| Website | — | — |
| Docs | — | — |
Overview
Level3, originally Level 3 Communications, was a multinational telecommunications and internet service provider that operated a global Tier-1 network and content delivery network (CDN) until its CDN services were discontinued in 2023. Acquired by CenturyLink (now Lumen Technologies) in 2017, it provided core transport, IP, voice, video, and content delivery for medium-to-large internet carriers. The CDN focused on video delivery, large object caching, and edge computing, serving clients across North America, Latin America, Europe, and parts of Asia. Level3’s CDN is no longer active, and its network assets are now managed under Lumen Technologies.
Universal CDN, founded in 2015 and headquartered in Sofia, Bulgaria, offers a global content delivery network focused on delivering web content, video streaming, and live media. It serves businesses ranging from small startups to large enterprises, particularly those needing video-on-demand and live streaming capabilities. The service emphasizes an API-first approach, enabling developers to integrate and manage CDN services programmatically. Universal CDN supports a variety of use cases, including e-commerce, media, and gaming, with a focus on performance and real-time analytics.
Network & Architecture
—
Universal CDN operates a global network with points of presence (PoPs) across North America, Europe, Asia-Pacific, and Latin America. Specific PoP counts are not publicly disclosed, but the provider claims broad coverage with optimized routing for low latency. It leverages partnerships with major ISPs for peering, enhancing delivery speeds. The service is particularly strong in Europe and North America but has less presence in Africa and the Middle East, which may limit performance in those regions.
Feature comparison
| Feature | Level3 | Universal CDN |
|---|---|---|
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
—
Universal CDN offers a pay-as-you-go (payg) model with no minimum commitments, suitable for variable traffic needs. Pricing starts at approximately $0.05 per GB for standard delivery, with discounts for higher volumes. A free trial is available for testing, and enterprise plans are offered for custom needs. Detailed pricing is available at https://www.ucdn.com/pricing.
Integrations & DevEx
—
Universal CDN provides an API-first design for seamless integration with developer workflows. It supports real-time logs for immediate performance insights but lacks Terraform support or advanced IaC tools. SDKs are available for common programming languages, facilitating integration with CI/CD pipelines. The platform does not offer built-in migration tools but provides documentation for transitioning from other CDNs.
When it fits
—
- Businesses needing video-on-demand or live streaming with HLS/DASH packaging and RTMP ingest for media-heavy applications.
- Developers seeking an API-first CDN with real-time analytics for programmatic control and monitoring.
- Small to medium-sized businesses looking for a pay-as-you-go model with global coverage for web and video content.
When it doesn’t
—
- Organizations requiring advanced security features like WAF, bot mitigation, or rate limiting, which are not offered.
- Companies needing extensive edge compute capabilities or key-value storage for serverless applications.
- Users focused on regions like Africa or the Middle East, where Universal CDN’s network presence is limited.
History & Notes
Level3 was a major player in the CDN market, leveraging its Tier-1 network to deliver high-performance content delivery, particularly for video and large files. Its acquisition of companies like Genuity, WilTel, and TW Telecom expanded its footprint, but the 2017 merger with CenturyLink shifted focus to broader network services. The CDN’s shutdown in 2023 was part of Lumen’s strategic pivot, though specific reasons for discontinuation were not publicly detailed. Some network assets may still support Lumen’s non-CDN services.
—