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Response Parameters

Field Definitions

Fraud Score	Risk	Description
≥75	Suspicious	Has had previous reputation issues or is using a low risk proxy/VPN.
≥85	High Risk	Has suspicious behavior signals.
≥90	Frequent Abusive Behavior	Has demonstrated frequent abusive behavior over the past 24-72 hours.

Consider results as high risk when valid is false, active is false, or fraud_score is at least 90.

The Phone Validation API returns over 20 data points so your business logic can make the best decisions to validate phone numbers and accurately identify invalid phone numbers or risky user signals. Analyzing the validity of the phone number and overall Fraud Score is usually the best way to determine the user's overall risk. The API results directly indicate risky phone numbers and those with recent abusive behavior.

Fraud Scores >= 75 are suspicious and are likely to be involved in suspicious or dangerous activities but are not necessarily fraudulent users.
Fraud Scores >=85 are risky users likely to engage in malicious behavior.
Fraud Scores >=90 are very high-risk users that have already engaged in abuse. Scores in this threshold indicate recent or excessive abuse and fit the profile of a typical risky user.

We recommend blocking or flagging a phone number or transaction as high-risk using a combination of the fraud_score, recent_abuse, VOIP, prepaid, active, and risky variables. As every user has a unique audience, you may find better results validating phone numbers by only blocking "invalid" and "recent_abuse" phone numbers or Fraud Scores greater than 85-90+.

Field

Description

Possible Values

valid

Is the phone number properly formatted and considered valid based on assigned phone numbers available to carriers in that country?

boolean

active

Is this phone number a live, usable phone number that is currently active? This feature requires a separate data set that provides subscriber status details shared directly from the Telecom provider. Contact your account manager or support to enable this add-on feature, which determines if a phone number is reachable or disconnected using our HLR lookup service and carrier signals.

boolean, null

formatted

The phone number formatted in the international dialing code. Returns "N/A" if not formattable.

string

local_format

The phone number formatted in the country's local routing rules with area code. Returns "N/A" if not formattable.

string

fraud_score

The IPQS risk score which estimates how likely a phone number is to be fraudulent. Scores 85+ are risky, while Fraud Scores 90+ are high risk.

integer, 0 - 100

recent_abuse

Has this phone number been associated with recent or ongoing fraud?

boolean, null

VOIP

Is this phone number a Voice Over Internet Protocol (VOIP) or a digital phone number?

boolean, null

prepaid

Is this phone number associated with a prepaid service plan?

boolean, null

risky

Is this phone number associated with fraudulent activity, scams, robocalls, fake accounts, or other unfriendly behavior?

boolean, null

name

The name of the owner associated with the phone number, such as the first or last name or business name assigned to the phone number. The API will return multiple names in comma-separated format. Value is "N/A" if unknown.

string

carrier

The carrier (service provider) this phone number has been assigned to or "N/A" if unknown.

string

line_type

The type of line this phone number is associated with (Toll-Free, Wireless, Landline, Satellite, VOIP, Premium Rate, Pager) or "N/A" if unknown. Line Type can play an important role in understanding phone number reputation.

string

country

The two-character country code for this phone number.

string

region

Region (state) of the phone number if available or "N/A" if unknown.

string

city

City of the phone number if available or "N/A" if unknown.

string

accurate_country_code

Indicates whether the phone number's dialing code matches any of the provided country code(s).

boolean

zip_code

Zip or Postal code of the phone number if available or "N/A" if unknown.

string

timezone

Time zone of the phone number if available or "N/A" if unknown.

string

dialing_code

The 1 to 4-digit dialing code for this phone number or "null" if unknown.

integer

do_not_call

Indicates if the phone number is listed on any Do Not Call (DNC) lists. This parameter is only supported in the USA and Canada. This data may not be 100% current with the latest DNC blocklists. Contact your account manager to enable better DNC data and removal of TCPA litigators.

boolean

leaked

Has this phone number recently been exposed in an online database breach or compromise?

boolean

spammer

Indicates if the phone number has recently been reported for spam or harassing calls/texts.

boolean

active_status

Additional details on the status of the subscriber connection will be provided when enhanced active line checks are enabled. Contact your account manager or support to enable this add-on feature, which determines if a phone number is reachable or disconnected using our HLR lookup service and carrier signals. These values can be:

"Active Line"
"Active Line - High Confidence"
"Active Line - Medium Confidence"
"Active Line - Low Confidence"
"Disconnected Line"
"Phone Turned Off"
"Inconclusive Status"
or "N/A" if unknown.

The confidence level is included for active lines whenever possible.

string

user_activity

The frequency at which this phone number makes legitimate purchases or account registrations and otherwise engages in legitimate user behavior online. Values can be "high", "medium", "low", or "none". Values of "high" or "medium" are strong signals of healthy usage. New phone numbers without a history of legitimate behavior will have a value as "none". This field is restricted to higher plan tiers.

string

mcc

Mobile Country Codes (MCC) identify the country of a mobile phone number subscriber. This provides a corresponding number to a specific country to facilitate routing for wireless calls and SMS messages. The MCC value is "N/A" when unknown or unavailable, such as for landline and toll-free numbers.

string (typically 3 digit number) or "N/A"

mnc

Mobile Network Codes (MNC) identify the mobile carrier of a phone number subscriber. This data provides a corresponding number to a specific telecom provider, such as Orange, Vodafone, and more, to facilitate routing for wireless calls and SMS messages. The MNC value is "N/A" when unknown or unavailable, such as for landline and toll-free numbers.

string (typically 3 digit number) or "N/A"

associated_email_addresses

Displays email addresses linked to the phone number, if available in our data sources. Match rates vary by country and line type. This field is restricted to upgraded plans. Object value contains "status" and "emails" as an array.

object

transaction_details (object)

Additional scoring variables for risk analysis are available when transaction scoring data is passed through the API request. These variables are also useful for scoring user data such as physical addresses, phone numbers, usernames, and transaction details. The data points below are populated when at least one transaction data parameter is present in the initial API request. The following transaction variables are "null" when the necessary transaction parameters are not passed with the initial API request. For instance, not passing the "billing_email" will return "valid_billing_email" as null.

Key	Description	Expected Values
risk_score	Confidence that this user or transaction is exhibiting malicious behavior. Scores are 0 - 100, with 75+ as suspicious and 90+ as high risk. This value uses different calculations with less weight on the IP reputation than the overall "Fraud Score".	Float
valid_billing_address	Physical address validation and reputation analysis.	Boolean
valid_shipping_address	Same as above.	Boolean
valid_billing_email	Light abusive check and reputation analysis for the email address. We recommend using our dedicated Email Validation API for deeper analysis.	Boolean
valid_shipping_email	Same as above.	Boolean
leaked_billing_email	Indicates if the email address was recently exposed or compromised in a database breach.	Boolean
leaked_shipping_email	Same as above.	Boolean
leaked_user_data	Indicates if the user's data (including phone & address) have recently been exposed or compromised in a database breach.	Boolean
risky_billing_phone	Reputation analysis for abusive activity associated with the phone number.	Boolean
risky_shipping_phone	Same as above.	Boolean
valid_billing_phone	Valid & active phone number with the phone carrier (not disconnected).	Boolean
valid_shipping_phone	Same as above.	Boolean
billing_phone_carrier	Phone number provider such as "AT&T" or "Bell Canada".	String
shipping_phone_carrier	Same as above.	String
billing_phone_line_type	Phone number line type, such as Landline, Wireless, Toll-Free, VOIP, Satellite, Premium Rate, Pager, Internet Service Provider, Unknown, or N/A.	String
shipping_phone_line_type	Same as above.	String
billing_phone_country	2-letter country code associated with the phone number.	String
shipping_phone_country	Same as above.	String
billing_phone_country_code	The country dialing code associated with the phone number.	Integer
shipping_phone_country_code	Same as above.	Integer
bin_country	The country associated with the credit card BIN.	String
risky_username	Is the username frequently associated with fraudulent behavior?	Boolean
is_prepaid_card	Is the credit card prepaid?	Boolean
fraudulent_behavior	Indicates high-risk behavior patterns and a high chance of fraud.	Boolean
phone_name_identity_match	Enterprise Account Feature — Indicates a reverse identity match between the billing phone number and first/last name. Values: "Unknown" - no checks processed, "Match" - positive identity match, "Mismatch" - data matches another user, "No Match" - could not pair identity data.	String
phone_email_identity_match	Enterprise Account Feature — Indicates a reverse identity match between the billing phone number and email address. Values: "Unknown" - no checks processed, "Match" - positive identity match, "Mismatch" - data matches another user, "No Match" - could not pair identity data.	String
phone_address_identity_match	Enterprise Account Feature — Indicates a reverse identity match between the billing phone number and physical address. Values: "Unknown" - no checks processed, "Match" - positive identity match, "Mismatch" - data matches another user, "No Match" - could not pair identity data.	String
email_name_identity_match	Enterprise Account Feature — Indicates a reverse identity match between the billing email address and first/last name. Values: "Unknown" - no checks processed, "Match" - positive identity match, "Mismatch" - data matches another user, "No Match" - could not pair identity data.	String
name_address_identity_match	Enterprise Account Feature — Indicates a reverse identity match between the billing first/last name and physical address. Values: "Unknown" - no checks processed, "Match" - positive identity match, "Mismatch" - data matches another user, "No Match" - could not pair identity data.	String
address_email_identity_match	Enterprise Account Feature — Indicates a reverse identity match between the billing physical address and email address. Values: "Unknown" - no checks processed, "Match" - positive identity match, "Mismatch" - data matches another user, "No Match" - could not pair identity data.	String

message

A generic status message, either "success" or an error notice.

string

success

Was the request successful?

boolean

request_id

A unique identifier for this request that can be used to look up the request details or send a postback conversion notice.

string

errors

An array of errors that occurred while attempting to process this request.

array of strings

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