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Citiview Phone Number Validation
x402
Citiview Phone Number Validation is a paid API for AI agents from agents.citiviewgroup.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-14).
Validates a phone number and returns its country, line type (mobile, fixed, VoIP, toll-free, etc.), and formatted representations using Google's libphonenumber data.
Price / call$0.002
Success—
StatusUnknown
How this service works
Phone number check: validates a number and returns its country, line type (mobile, fixed line, toll free, VoIP...) and E.164, international and national formats, from Google's libphonenumber data.
Output
Returns the phone number's validity status, detected country (ISO code and name), line type (mobile, fixed line, toll-free, VoIP, pager, etc.), and the number formatted in E.164 (e.g. +14155552671), international (e.g. +1 415 555 2671), and national (e.g. (415) 555-2671) formats.
Example use cases
Validate user signup phone number
“A user just signed up with phone number 07911123456 and said they're in the UK — can you validate it and tell me whether it's a real mobile number?”
Detect VoIP numbers before calling
“Before we auto-dial this lead at +18005551234, check if that number is actually a toll-free or VoIP line so we know what to expect.”
Normalize phone numbers to E.164
“I have this phone number — 212 555 0100 — and I think it's a US number. Can you validate it and give me the proper E.164 and international formatted versions?”
Technical details
Endpoint
GEThttps://agents.citiviewgroup.com/v1/phone?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need reliable phone number validation, line type classification, and multi-format normalization powered by Google's libphonenumber — particularly when you need to distinguish mobile from VoIP/toll-free lines or normalize international numbers to E.164 for downstream use. Prefer this over regex-only validators or generic string parsers for production-grade telecom data.
Side effects
- Invalid or unparseable number returns an error or invalid flag
- Missing country code without a fallback country hint may cause parsing failure
- Ambiguous short numbers may not resolve correctly without a country hint
- Non-numeric or malformed strings in the number field will fail validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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