{"uid":"cap_nWoWHK9ciGE1leoa7VOZ9","slug":"numberintel-npa-area-code-lookup-d2157baa","name":"NumberIntel NPA Area Code Lookup","description":"NANP area code lookup: region, state, country, timezones, current local time, toll-free/premium/geographic flags. Static authoritative dataset (450 NPAs), sub-10ms responses.","url":"https://numberintel.dev/v1/npa","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["npa"],"properties":{"npa":{"type":"string","description":"3-digit NANP area code, e.g. 480"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"npa":{"type":"string"},"state":{"type":"string"},"region":{"type":"string"},"country":{"type":"string"},"timezones":{"type":"array","items":{"type":"string"}},"toll_free":{"type":"boolean"},"geographic":{"type":"boolean"},"premium_rate":{"type":"boolean"}}}}}}},"responseSchema":{"type":"json","example":{"npa":"602","state":"US-AZ","region":"Arizona","country":"US","timezones":["America/Phoenix"],"toll_free":false,"geographic":true,"local_time":[{"tz":"America/Phoenix","time":"Sun 20:30"}],"premium_rate":false}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_X_lww2CUUjVpXpU9uZswM","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns geographic, timezone, and classification metadata for a given 3-digit NANP area code","exampleAgentPrompt":"What state, region, and timezone does area code 602 belong to, and is it a toll-free or premium-rate number?","exampleUseCases":[{"title":"Phone lead geographic routing","prompt":"I have an inbound lead with phone number starting in area code 305 — can you tell me what state and timezone that is so I can route them to the right sales rep?"},{"title":"Toll-free number verification","prompt":"Before we call back this number with area code 888, can you check if it's a toll-free number or a regular geographic line?"},{"title":"Local time awareness before calling","prompt":"I want to call someone with area code 907 — what's the local time there right now so I don't call them in the middle of the night?"}],"resultDescription":"A JSON object containing the area code's state (e.g. 'US-AZ'), region name (e.g. 'Arizona'), country code, list of applicable timezones, current local time per timezone, and boolean flags indicating whether the number is toll-free, geographic, or premium-rate.","failureModes":["Missing or invalid 'npa' query parameter returns an error — must be exactly 3 digits","Non-NANP area codes (outside US, Canada, Caribbean) may return no results","Payment failure via x402/USDC on Base will block the request","Malformed area code strings (letters, fewer/more than 3 digits) will be rejected"],"whenToPreferThis":"Use this endpoint when you need structured metadata about a NANP area code prefix rather than a full phone number — particularly when you need timezone, state/region, toll-free status, or premium-rate classification with pay-per-call pricing and no subscription required. Prefer this over full phone number validation APIs when only the NPA prefix is available.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:38:05.497Z","isFirstParty":false}