# Lob.com US Verifications API **Canonical:** https://apis.io/apis/lobcom/lobcom-us-verifications-api/ **Provider:** Lob.com — https://apis.io/providers/lobcom/ **Base URL:** https://api.lob.com/v1 **Documentation:** https://docs.lob.com/ Lob.com US Verifications API is one of 32 APIs that [Lob.com](https://apis.io/providers/lobcom/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include U S Verifications. The published artifact set on APIs.io includes an OpenAPI specification. Validate, automatically correct, and standardize the addresses in your address book based on USPS's Coding Accuracy Support System (CASS).
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## US Verifications Test Env When verifying US addresses, you'll likely want to test against a wide array of addresses to ensure you're handling responses correctly. With your test API key, requests that use specific values for `address` or `primary_line` and (if using `primary_line`) an arbitrary five digit number for `zip_code` (e.g. "11111") let you explore the responses to many types of addresses:
ADDRESS TYPE FOR SAMPLE RESPONSE DELIVERABILITY SET primary_line OR address TO
Commercial highrise deliverable commercial highrise
Residential highrise deliverable residential highrise
Residential house deliverable residential house
PO Box deliverable po box
Rural route deliverable rural route
Puerty Rico address w/ urbanization deliverable puerto rico
Military address deliverable military
Department of state deliverable department of state
Generic deliverable deliverable deliverable
Missing a suite number deliverable_missing_unit missing unit
Suite number doesn't exist deliverable_incorrect_unit incorrect unit
Residential house with unnecessary suite number deliverable_unnecessary_unit unnecessary unit
Undeliverable and block matched undeliverable undeliverable block match
Undeliverable and no block matched undeliverable undeliverable no match
See the `test` request & response examples under [US Verification Examples](#operation/us_verification) within the "Verify a US or US territory address" section in US Verifications. You can rely on the response from these examples generally matching the response you'd see in the live environment with an address of that type (excluding the `recipient` field). The test API key does not perform any verification, automatic correction, or standardization for addresses. If you wish to try these features out, use our live demo or the free plan (see our pricing for details).
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## Machine-readable artifacts (1) - **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/lobcom/refs/heads/main/openapi/lobcom-us-verifications-api-openapi.yml ## Other Lob.com APIs (12) - [Lob.com Accounts API](https://apis.io/apis/lobcom/lobcom-accounts-api/) - [Lob.com Addresses API](https://apis.io/apis/lobcom/lobcom-addresses-api/) - [Lob.com Bank Accounts API](https://apis.io/apis/lobcom/lobcom-bank-accounts-api/) - [Lob.com Billing Groups API](https://apis.io/apis/lobcom/lobcom-billing-groups-api/) - [Lob.com Booklets API](https://apis.io/apis/lobcom/lobcom-booklets-api/) - [Lob.com Buckslip Orders API](https://apis.io/apis/lobcom/lobcom-buckslip-orders-api/) - [Lob.com Buckslips API](https://apis.io/apis/lobcom/lobcom-buckslips-api/) - [Lob.com Campaigns API](https://apis.io/apis/lobcom/lobcom-campaigns-api/) - [Lob.com Card Orders API](https://apis.io/apis/lobcom/lobcom-card-orders-api/) - [Lob.com Cards API](https://apis.io/apis/lobcom/lobcom-cards-api/) - [Lob.com Checks API](https://apis.io/apis/lobcom/lobcom-checks-api/) - [Lob.com Creatives API](https://apis.io/apis/lobcom/lobcom-creatives-api/) ## Tags U S Verifications --- Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/lobcom/lobcom-us-verifications-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/lobcom/.