Company snapshot
| Category | AT&T | Viblast |
|---|---|---|
| Status | active | defunct |
| 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.
Viblast was a Bulgaria-based company founded in 2013 that specialized in peer-to-peer (P2P) video streaming solutions, offering Viblast PDN and Viblast Player for live and on-demand video delivery. It served broadcasters, content providers, and CDNs, leveraging WebRTC and HTML5 to enable plugin-free HLS and MPEG-DASH playback. The company aimed to reduce bandwidth costs and improve stream quality for high-concurrency live streams. As of 2023, Viblast is reported as out of business, with no active services or official website available.
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.
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Feature comparison
| Feature | AT&T | Viblast |
|---|---|---|
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.
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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.
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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.
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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.
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History & Notes
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Viblast was recognized for its innovative use of WebRTC for P2P video streaming, winning awards like the Streaming Media European Readers’ Choice for Delivery Network in 2014. Its technology was particularly suited for large-scale live streaming, claiming up to 90% bandwidth savings. No official EOL announcement was found, but PitchBook data confirms the company ceased operations by March 2023. No evidence of asset sales or successor entities exists, and its website (viblast.com) is no longer active.