Optus Internet Speed Test — Free NBN, 4G & 5G Speed Check

Run a free Optus speed test to verify the real-world performance of your NBN, 4G, or 5G Home Internet connection. This tool measures your download speed, upload speed, ping, and jitter in under 30 seconds. After the test, compare your results to Optus's official plan benchmarks. If your 5G speeds fall below 40 Mbps or 50 Mbps, you may be eligible for the Optus Speed Satisfaction Guarantee, which allows you to cancel without paying out the remaining modem device payments.

Optus ISP Plans & Typical Evening Speeds

Optus divides its internet offerings across the NBN and its own 4G/5G mobile towers. Many of the wireless plans are strictly speed-capped to balance network load. Compare your test results with your subscribed tier below:

Real World Speed Expectations

Wireless 4G and 5G connections fluctuate heavily based on distance to the tower, line of sight, and local weather. If you are on an Optus capped plan (e.g. 50Mbps 5G), you should see test results consistently between 40-50 Mbps. For uncapped plans, the speed will rely entirely on network congestion and signal quality at your specific address.

The Optus Speed Satisfaction Guarantee: If your 5G Internet plan does not deliver at least 40Mbps (on Everyday 5G) or 50Mbps (on Fast/Superfast 5G), Optus allows you to return your modem within 30 days and cancel the contract without having to pay out the remaining modem fees.

The Ultimate Optus Troubleshooting Guide (Reddit Sourced)

We've scoured forums like r/Optus and independent networking communities to compile the most advanced, community-verified troubleshooting tips. If you're experiencing slow speeds, latency spikes, or hardware limitations with Optus, these power-user strategies will help.

1. Provided Gateway vs. Third-Party Router

A recurring theme across community feedback is the limitation of the stock router provided by Optus.

• Wi-Fi Range Issues: Power users frequently note that while the physical line connection (fiber or copper) is stable, the ISP-provided gateway struggles to broadcast a strong Wi-Fi signal through thick walls or across multiple floors.
• The Bridge Mode Solution: For optimal performance, the community heavily recommends placing the provided equipment into "Bridge Mode" (or Modem Mode) and investing in a high-quality third-party mesh system (like eero, ASUS, or TP-Link). This offloads the routing duties and typically resolves bufferbloat and wireless dropouts.

2. Diagnosing Line Quality and Congestion

If you are failing to reach your advertised speeds even on a wired connection, you need to check your physical line stats.

• Peak Time Congestion: Some users report speed degradation during peak evening hours (7 PM - 11 PM). If your speed test drops significantly during these hours, it's likely due to local node congestion rather than a fault in your home.
• Checking the Logs: Access your router's admin panel to check the event logs. Look for repeated T3/T4 timeouts (for cable) or loss of optical signal (for fiber). These are hard evidence of an external line fault that you can present to Optus support to mandate an engineer visit.

3. DNS & IPv6 Configurations

Sometimes the speed is fine, but web pages feel sluggish to load. This is often a DNS resolution issue.

• Custom DNS: The community strongly advises changing your DNS servers from Optus's default servers to faster, privacy-focused alternatives like Cloudflare (1.1.1.1) or Google (8.8.8.8). This often provides a noticeably snappier browsing experience.
• IPv6 Routing: In some regions, Optus's IPv6 implementation can cause routing loops with specific services. If you experience mysterious timeouts on certain apps, temporarily disabling IPv6 on your router can act as a quick diagnostic fix.

Router / Gateway Guide & Device Payment Plans

Optus does not lock you into long-term service contracts, but they do use Device Payment Plans (DPP) to lock in modem costs over 24 or 36 months.

• 4G Modem ($216 value): Optus credits you $9/mth over 24 months. Canceling early means paying the remaining balance.
• 5G Modem ($468 value): Optus credits you $13/mth over 36 months. Canceling early requires a lump sum payout of $13 x remaining months.
• NBN Modem ($306 value): Optus credits you $12.75/mth over 24 months. Early cancellation incurs the remaining cost.
• BYO Modem (NBN): You can Bring Your Own modem, but Optus explicitly states they cannot guarantee support for it, and any fixed-line voice services (phone calls, 000 emergency) will not function.

Connection Technologies

Optus delivers internet through the national NBN infrastructure (FTTP, HFC, FTTB, FTTC, FTTN) and their expansive 4G/5G mobile networks. The Optus Plus Entertainer Superfast 5G and Ultrafast NBN plans are restricted to users who have excellent 5G coverage or direct FTTP/HFC fibre lines.

Coverage

While NBN is nationwide, Optus 5G Home Internet is tightly restricted to specific suburbs. When you sign up for an Optus 4G or 5G home plan, the modem is registered to your specific address. Optus network systems actively monitor the location of the modem—if it detects the modem is being used at a different location than your registered service address, they reserve the right to suspend or cancel your account.

Common Problems

• Activating Netflix on SubHub: If your plan includes the Netflix subscription, you must activate it specifically via the Optus SubHub platform. If you activate Netflix directly before linking it to SubHub, you will be double-charged.
• No Phone Service on 5G: Optus 5G Home Internet plans do not support fixed-line telephony, back-to-base security alarms, or medical alert systems.

Gaming Performance

NBN fixed-line connections offer the most stable ping for gaming. Optus 5G is capable of gaming but is subject to higher jitter due to wireless interference. Optus does not recommend using 4G/5G Home Internet for high-stakes competitive gaming where latency spikes can cause connection drops.

Streaming Performance

Optus top-tier plans specifically target heavy streamers by including Netflix via SubHub. The 50Mbps and 100Mbps 5G plans are excellent for 4K streaming. However, the Everyday Basic 4G plan is capped at 25Mbps, meaning it can only support one 4K stream at a time before buffering occurs.

Pros and Cons

Pros:

• Optus SubHub integrates Netflix standard subscriptions directly into your internet bill.
• Speed Satisfaction Guarantee provides a 30-day exit strategy if 5G speeds underperform.
• Uncapped 5G plans offer fibre-like speeds without requiring physical cabling.

Cons:

• Steep modem cancellation fees (up to $468) if you leave before 36 months on 5G.
• Strict location-locking on wireless modems prevents travel use.
• Data pooling and data sharing are disabled on Home Internet SIMs.

Competitor Comparison

Related Diagnostic Tools

Ensure your connection is perfectly stable by using our supplementary testing tools:

• Ping Test - Evaluate raw latency and response stability.
• Global Ping Test - Check your latency from routing locations worldwide.

Optus Internet — Frequently Asked Questions