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

Meter
Hedera Hashgraph
Avalanche
Algorand
Acala
Karura
Elrond
Fireblocks is an all-in-one digital asset custody, settlement, and transfer platform that is intended for institutions, providing secure transfer and storing of digital assets.
Which is more popular?
Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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|---|---|---|
| Website | zip-codes.com | fireblocks.com |
| Company | Startup from the United States · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.

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...
No description of Fireblocks yet.
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
No analysis of Fireblocks yet.
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Fireblocks: Biggest Challenge for Institutions Is Not Knowing Which Questions to Ask
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Fireblocks has enabled 2,400+ enterprises, processed $10 trillion in transactions, and secured over 550 million wallets (Fireblocks, 2025).
When comparing ZIP Code API and Fireblocks, you can also consider the following products.

Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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Meter is a decentralized and high-performance-based infrastructure that allows for the development of blockchain applications.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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A superior consensus algorithm.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Avalanche was founded at MIT with the mission to create a high scalability blockchain platform that has been used by developers around the globe to create new applications that are based and run by cryptocurrency.
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