Lookup API

Detecting and verifying instant messaging app usage by phone number or email

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Supported platforms for lookup

iMessage

FaceTime

Check whether the contact phone number or email is registered with any of these services in a single request

Easy-to-use API

// Simple API request 
curl --location --request
POST 'https://a.looplookup.com/api/v1/lookup/' 
  --header 'Authorization: XXXXXX-XXXXXX-XXXXXX-XXXXXX' 
  --header 'Content-Type: application/json' 
  --data-raw '{ 
  "contact": "+13231112233", 
  "services": ["imessage", "facetime", "whatsapp"] 
}'  
// Please check the API doc to make a request with all features

API Documentation

Most popular use cases

Increase conversion rates

Augment your customer experience by understanding who's calling or texting, even if they haven't contacted you before. Use this data to propose more relevant services to your customers and increase your conversion.

Make successful texts and calls

Ensure customers get the information they need. Split landline and mobile numbers programmatically, check carrier information, and used Apple or WhatsApp services to guarantee your texts or calls will be successful.

Increase security

When you know a customer can receive iMessage or accept a FaceTime call, you can use those to contact them. Since these applications use two-way encryption, therefore more secure than SMS or calls through a carrier.

Data degradation

By periodically checking whether a phone number or email address is registered on messaging apps, you can be confident it remains active and reachable.

How it works?

Send a request with contact phone number or email
Wait a bit until your requests are processed
Receive a result

Pricing

Estimated requests	Price/req.
Under 2k	US$0.0175
5k or more	US$0.014
10k or more	US$0.011
20k or more	US$0.01
50k or more	US$0.0098
100k or more	US$0.009
500k or more	US$0.007
1m or more	US$0.0055

Get Started

Frequently Asked Questions

Is it possible to test this product for free?

After Sign Up, you can verify your phone number and receive free lookup credits.

How I can get credentials to use the API?

Need to create an account, and during this process fill in all required fields. After that, you can find your credentials in the Dashboard.

Is it possible to use the lookup service without API?

Yes, you can send requests through the dashboard and export the results as a CSV file. However, this product is more focused on calling our API from your server, backend, CRM, or something else.

Can I resell information that gets from your API?

You can use the information that you received through our API only within your own business or personal interests. You cannot sell lists containing data you have received through our API unless you have our permission.

Does the contact know that we are looking them up?

No, your contact never knew about it. Our lookup algorithm can check data without disturbing the contact.

Can you share your lookup algorithm with me?

Our implementation is proprietary and does not imply the ability to use it on-premises.

What payment methods do you support?

We accept payments via:

Debit and Credit (including Mastercard, Visa, Maestro, American Express, Discover, Diners Club, JCB, UnionPay, and Mada). Support all currencies.
Wire Transfers (ACH/SEPA/SWIFT).

Are there any restrictions for signup?

We can’t currently open accounts for users living in the following countries: Afghanistan, Burma (Myanmar), Cote d’Ivoire, Cuba, Democratic Republic of the Congo, Iran, Iraq, Lebanon, Liberia, Libya, Morocco, Nicaragua, North Korea, Russia, Sierra Leone, Somalia, South Sudan, Sudan, Syria, Venezuela, Yemen, and Zimbabwe. Or/and for organizations or individuals who violate our Terms of Use.