
Fast.com
Speedtest.net
Testmy.net
LibreSpeed
SpeedOf.Me
nPerf
OpenSpeedTest
speed.cloudflare.com is a tool that allows you to measure the speed and consistency of your connection to the Internet. You can use it to verify that the speed your ISP promised you is the speed you are getting.
Smarty
Zipcodestack
PostalDataPI
Geoco.io
Melissa Data Quality
Loqate
usZIPCodes.org
REST API for US ZIP, ZIP+4, and Canadian postal codes. Single unified endpoint covers address validation and standardization, radius search (centroid haversine and true spatial polygon intersection), point-to-point distance, autocomplete/typeah

Which is more popular?
Based on our record, Speed Test by Cloudflare seems to be more popular. It has been mentioned 212 times since March 2021.
Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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| Website | speed.cloudflare.com | zip-codes.com |
| Pricing | — | |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Speed Test by Cloudflare yet.
API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America — no separate APIs by country or data type. What it does Address validation and standardization — production-grade parser with ZIP+4 append, refreshed monthly Radius search — centroid haversine and...
What each product offers, as listed by its team.

Possible disadvantages
An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
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Walkthroughs and reviews on video.
Internet Speed Test by Cloudflare to Check Upload, Download Speed
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Speed Test by Cloudflare and ZIP Code API. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

I'm a huge fan of https://speed.cloudflare.com/ and you'll have to come with better evidence. Also fast.com doesn't even give upload speed and latency. - Source: Hacker News / 5 months ago
I had not heard of http://speed.cloudflare.com either. I just tried it and I did not get accurate numbers. wifiman.com, from Ubiquiti/Unifi team does provide more accurate numbers. fast.com numbers are pretty accurate as well. - Source: Hacker News / 5 months ago
I recommend the tests listed in https://www.bufferbloat.net/projects/bloat/wiki/Tests_for_Bufferbloat/: - https://www.waveform.com/tools/bufferbloat - https://speed.cloudflare.com/ - https://test.libreqos.com/. - Source: Hacker News / 5 months ago
Tracking ZIP Code API since May 2026.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Accurately test your Internet connection speed with this powerful broadband speed test. Improve your bandwidth speed with the truth.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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