name: USACallerLookup
description: A free, read-only JSON REST API over US phone-numbering data and FTC robocall complaint records. No API key or
  signup required; access is throttled at 60 requests/minute per IP. Data is sourced from FTC Do Not Call complaints and the
  NANPA registry and dedicated to the public domain under CC0.
url: https://raw.githubusercontent.com/api-evangelist/usacallerlookup/refs/heads/main/apis.yml
created: '2026-09-14'
modified: '2026-09-14'
specificationVersion: '0.21'
tags:
- phone lookup
- caller ID
- robocall
- FTC
- telecom
- open data
- anti-fraud
apis:
- name: USACallerLookup Free Phone Lookup API
  description: 'No-auth, read-only REST API with three GET endpoints: reverse phone number lookup, area-code aggregates, and
    dataset stats. Backed by a public OpenAPI 3.1.0 contract.'
  humanURL: https://www.usacallerlookup.com/api/
  baseURL: https://www.usacallerlookup.com/wp-json/ucl/v1
  tags:
  - phone lookup
  - caller ID
  - robocall
  - FTC
  - telecom
  - open data
  - anti-fraud
  properties:
  - type: OpenAPI
    url: https://www.usacallerlookup.com/wp-content/uploads/api/openapi.json
  - type: Documentation
    url: https://www.usacallerlookup.com/api/
  - type: LLMsTxt
    url: https://www.usacallerlookup.com/llms.txt
  image: https://www.usacallerlookup.com/favicon.ico
maintainers:
- FN: USACallerLookup
  url: https://www.usacallerlookup.com/
  email: contact@usacallerlookup.com
common:
- type: Website
  url: https://www.usacallerlookup.com/
- type: OpenAPI
  url: openapi/usacallerlookup-openapi.json
- type: LLMsTxt
  url: llms/usacallerlookup-llms.txt
- type: Packages
  url: packages/usacallerlookup-packages.yml
- type: SDKs
  url: packages/usacallerlookup-packages.yml
- type: Authentication
  url: authentication/usacallerlookup-authentication.yml
- type: RateLimits
  url: rate-limits/usacallerlookup-rate-limits.yml
- type: Plans
  url: plans/usacallerlookup-plans-pricing.yml
- type: ErrorCatalog
  url: errors/usacallerlookup-problem-types.yml
- type: Conventions
  url: conventions/usacallerlookup-conventions.yml
- type: DataModel
  url: data-model/usacallerlookup-data-model.yml
- type: Conformance
  url: conformance/usacallerlookup-conformance.yml
- type: Lifecycle
  url: lifecycle/usacallerlookup-lifecycle.yml
- type: DomainSecurity
  url: security/usacallerlookup-domain-security.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Overlay
  url: overlays/usacallerlookup-openapi-overlay.yaml
- type: Documentation
  url: https://www.usacallerlookup.com/api/
- type: APIReference
  url: https://www.usacallerlookup.com/api/
- type: TermsOfService
  url: https://www.usacallerlookup.com/terms-conditions/
- type: Blog
  url: https://www.usacallerlookup.com/blog/
- type: Support
  url: https://www.usacallerlookup.com/contact-us/
- type: HelpCenter
  url: https://www.usacallerlookup.com/faq/
- type: GitHubOrganization
  url: https://github.com/usacallerlookup
x-enrichment:
  date: '2026-09-14'
  status: enriched
  artifacts_added: 16
  pass: local-v3
x-generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 95
  at: '2026-09-14T18:32:05.841Z'
image: https://www.usacallerlookup.com/favicon.ico