Japan Phone Number Validation & Lookup API

Validate, normalize and classify Japanese phone numbers in one call: fixed-line / mobile / toll-free (0120) / navi-dial (0570) / IP (050), with E.164 + national + international formats, landline region and a best-effort mobile carrier. Handles full-width digits and +81. Fully offline (google libphonenumber) - no external calls.

2 subscribers
8.6/10 popularity
16152 ms avg latency
100% success rate
3 endpoints
The in-depth APIMemo review for this API hasn't been published yet — the data below comes straight from the public marketplace listing.

Japan Phone Number Validation & Lookup API endpoints

MethodEndpointDescription
v1
GET /v1/lookup
/v1/lookup
Return number metadata: type (mobile/fixed_line/toll_free/navi_dial/voip), the geographic region for landlines, and a best-effort carrier for mobiles (number-block based, not…
GET /v1/validate
/v1/validate
Check whether a Japanese phone number is valid and return its canonical formats (E.164, national, international, RFC3966) plus number type.
POST /v1/batch
/v1/batch
Validate up to 1000 numbers in one request - for cleansing a customer list / CSV import.

Japan Phone Number Validation & Lookup API pricing

PlanPriceRate limitQuotas
BASIC Free
  • Requests: 1,000 / monthly
PRO Recommended $4.99 / month
  • Requests: 50,000 / monthly
ULTRA $29.99 / month
  • Requests: 500,000 / monthly

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