
RANDOM.ORG
GeneratorMix
Random Number Generator
Random-Required
RandomReady
Wheel of Names
GraphPad Random number generator
Generate random number, telephone numbers, text, hashed and social security numbers
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, Randommer seems to be more popular. It has been mentioned 2 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 | randommer.io | zip-codes.com |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Randommer 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...
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Randommer - Generate Random Data
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Recommendations tracked on public social media and blogs since March 2021.

With your second program, refactor your first to use something like https://randommer.io/ to return the random number. That will be your ONLY API call. Look up JSON Deserialization for GET requests to see how you can get your API call's... Source: about 4 years ago
I have multiple websites on a DigitalOcean( ref link - you get 100$, I get $25) droplet (including Randommer - over 5000 daily visits) and I highly recommend it. Source: almost 5 years ago
Tracking ZIP Code API since May 2026.
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RANDOM.ORG offers true random numbers to anyone on the Internet.
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Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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A place with hundreds of generators split into different categories from science to entertainment.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Randomly generate integers or floating point numbers within a given range and specified discrete or continuous statistical probability distribution.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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