Sonic Speed Test - Check Your Fiber Internet Speed
Test your Sonic internet speed in United States
www.sonic.comSonic is an independent internet service provider based in Santa Rosa, California, offering fiber speeds up to 10 Gbps with no data caps and no contracts. Sonic serves the San Francisco Bay Area, Sacramento, Los Angeles, and is expanding to Dallas, Texas. Test your Sonic connection to measure actual download, upload, and latency performance.
About Sonic
Sonic was founded in 1994 by Dane Jasper and Scott Doty at Santa Rosa Junior College in California. Headquartered in Santa Rosa, Sonic has grown into a leading independent ISP serving the San Francisco Bay Area, Sacramento, and Los Angeles markets with fiber and DSL internet.
The company is known for its commitment to net neutrality, customer privacy, and no data caps. Sonic offers fiber speeds up to 10 Gbps at $49.99 per month in select areas. In 2025, Sonic began expanding into Dallas, Texas. The company operates as a competitive local exchange carrier building its own fiber network.
Sonic Plans and Services
Sonic offers several internet plans across different technologies and price points.
Sonic fiber internet starts at $49.99 per month for speeds up to 10 Gbps in select markets, making it one of the most affordable fiber providers in the country. DSL Fusion plans also start at $49.99 and include a VoIP phone line. All plans feature unlimited data, no contracts, and free installation.
New customers receive a promotional discount of $10 off for the first year. Sonic does not require a contract and offers a 30-day satisfaction guarantee. Phone service is available as an add-on.
Sonic Internet Plans
| Plan | Speed | Price | Features |
|---|---|---|---|
| Fiber 1 Gig fiber | 1000 Mbps | $49.99/month |
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| Fiber 10 Gig fiber | 10000 Mbps | $49.99/month |
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| Fusion DSL dsl | 100 Mbps | $49.99/month |
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Prices and availability may vary by location. Contact Sonic for current offers.
Test Your Sonic Speed
Run a free speed test to check if Sonic delivers the speeds you are paying for. Test during peak evening hours for the most realistic results. Compare your results against Sonic advertised speeds above.
Sonic Speed Test FAQ
How fast is Sonic internet?
Sonic offers fiber internet speeds up to 10 Gbps with symmetrical upload and download in select California markets. Most fiber customers receive 1 Gbps symmetrical service. DSL speeds vary from 10 to 100 Mbps based on distance from the nearest central office. Sonic does not impose data caps or throttle any connections. Fiber delivers consistent speeds unaffected by peak-hour congestion that impacts shared cable networks.
Where is Sonic available?
Sonic primarily serves California including the San Francisco Bay Area, Sacramento, and Los Angeles regions. Specific coverage cities include San Francisco, Oakland, Berkeley, Palo Alto, Santa Rosa, San Jose, Santa Clara, Napa, Long Beach, and Pasadena among many others. Sonic also serves parts of Sonoma, Marin, and Orange counties. In 2025, Sonic began expanding fiber service to Dallas, Texas. Availability depends on whether fiber or DSL infrastructure reaches your specific address.
Does Sonic have data caps?
Sonic does not impose any data caps on its internet plans, whether fiber or DSL. Customers can use unlimited data each month without overage charges, speed throttling, or usage-based billing. This is a core part of Sonic's customer commitment alongside net neutrality support and privacy protection. Sonic is one of the few ISPs that has consistently maintained unlimited data across all service tiers.
How do I test my Sonic speed?
Use the speed test tool on this page to measure your Sonic download speed, upload speed, and ping latency. For fiber connections, connect directly to the Sonic router via ethernet cable for the most accurate results. Fiber speeds should be very close to your plan tier. For DSL connections, speeds vary based on distance from the central office. Test at different times of day to verify consistent performance.