Cox Speed Test

Test Your Cox Communications Internet Speed

Go beyond basic speed numbers. Measure your real Cox download speed, upload speed, ping, jitter, and bufferbloat to see how your connection truly performs.

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About Cox Communications

Technology

Cable (DOCSIS 3.1), Fiber (Cox Fiber)

Coverage

18 states

Typical Download

150-2000 Mbps

Typical Upload

10-100 Mbps

Cox Speed Tiers & Plans

PlanDownloadUploadPrice
Go Fast 150150 Mbps10 Mbps$50/mo
Go Faster 250250 Mbps10 Mbps$70/mo
Go Even Faster 500500 Mbps10 Mbps$90/mo
Go Super Fast 10001000 Mbps35 Mbps$110/mo
Go Beyond Fast 20002000 Mbps100 Mbps$150/mo

Prices and speeds are approximate and may vary by location. Promotional pricing may differ from regular rates.

Common Cox Issues

1.28 TB monthly data cap with overage charges of $10 per 50 GB
Upload speeds severely limited on cable plans
Peak hour bufferbloat causing video call disruptions
Modem compatibility issues requiring Cox-approved equipment
Intermittent outages in older infrastructure areas
Latency inconsistency on the DOCSIS network during congestion

How Pong.com Helps Cox Customers

Most speed tests only measure raw throughput inside your ISP's network. Pong.com goes further, testing across the real public internet to reveal what your Cox connection can actually do.

Bufferbloat Detection

Discover if your Cox connection suffers from high latency under load. Bufferbloat causes lag and stuttering even on fast connections.

Jitter Analysis

Measure the consistency of your Cox connection. High jitter means unreliable performance for gaming, video calls, and streaming.

Connection Health Grade

Get an A-F grade for your Cox connection based on speed, latency, bufferbloat, and stability. Know exactly where you stand.

Real-World Experience Scores

See how your connection performs for specific activities: 4K streaming, video conferencing, competitive gaming, and web browsing.

Speed History Tracking

Track your Cox speeds over time. Spot trends, identify peak-hour slowdowns, and catch degradation before it becomes a problem.

Public Internet Testing

Unlike tests that measure inside Cox's network, Pong.com tests across the real internet, giving you speeds that match your actual experience.

Compare Cox to Alternatives

AT&T Internet / Fiber

300-5000 Mbps (Fiber), 10-100 Mbps (DSL) down, 300-5000 Mbps (Fiber), 1-20 Mbps (DSL) up

Fiber (AT&T Fiber), DSL (legacy IPBB)

T-Mobile 5G Home Internet

50-300 Mbps down, 5-30 Mbps up

5G (n41, n71), 4G LTE (fallback)

CenturyLink / Quantum Fiber

100-8000 Mbps (Fiber), 10-100 Mbps (DSL) down, 100-8000 Mbps (Fiber), 1-10 Mbps (DSL) up

Fiber (Quantum Fiber / FTTH), DSL (legacy CenturyLink)

Frontier Fiber / DSL

500-5000 Mbps (Fiber), 6-115 Mbps (DSL) down, 500-5000 Mbps (Fiber), 1-10 Mbps (DSL) up

Fiber (XGS-PON), DSL (legacy, being phased out)

Google Fiber

1000-8000 Mbps down, 1000-8000 Mbps up

Fiber (GPON / XGS-PON)

Cox FAQ

Is Cox throttling my internet?
If your speed test results are significantly lower than what your Cox plan advertises, throttling or network congestion could be the cause. Run a test on Pong.com to check your real speeds. Pong.com tests through the public internet (not inside Cox's own network) so you get an accurate picture. Try testing at different times of day to see if speeds drop during peak hours.
What speeds should I expect from Cox?
Cox offers download speeds of 150-2000 Mbps and upload speeds of 10-100 Mbps, depending on your plan and connection type (Cable (DOCSIS 3.1), Fiber (Cox Fiber)). On a wired Ethernet connection, you should typically see 70-90% of your plan's advertised speed. Wi-Fi speeds will be lower due to signal attenuation and interference. Use Pong.com to verify your actual speeds.
Why is my Cox internet slow even with a fast plan?
Several factors can slow down your Cox connection: bufferbloat (high latency under load), Wi-Fi interference from neighboring networks, outdated modem or router firmware, network congestion during peak hours, or issues with your home wiring. Pong.com tests all of these factors in a single test, including bufferbloat detection, jitter analysis, and a connection health grade.
Does Cox have bufferbloat problems?
Bufferbloat can occur on any ISP connection, but it is especially common on Cable (DOCSIS 3.1) connections. It causes your latency to spike when your connection is under load (e.g., downloading a file while on a video call). Pong.com specifically tests for bufferbloat and grades it from A (excellent) to F (severe). This tells you more about your real connection quality than download speed alone.

Ready to Test Your Cox Connection?

Get the full picture: download, upload, ping, jitter, bufferbloat, and a connection health grade.

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