# Contact ID URIs
source: https://developer.mastercard.com/mastercard-send-person-to-person/documentation/field-uris-codes/contact-id-uris/index.md

| Schema |                                                                                                                                                                                                               Specifies                                                                                                                                                                                                                |                 Example                  | Alias Length |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------|--------------|
| email  | Email address. Format: `email:{local-part}@{domain}`                                                                                                                                                                                                                                                                                                                                                                                   | email:test123@abcmail.com                | 5-254        |
| tel    | Telephone number, which must include the country code and the fully qualified country-specific phone number. This telephone number must be mapped to a card account number through PAN mapping or a registered consumer. Format: `tel:{telephone-number}`, where {telephone-number} is the MSISDN = CC + NDC (or NPA) + SN * CC = Country Code * NDC = National Destination Code * NPA = Number Planning Area * SN = Subscriber Number | tel:12125559175                          | 1-15         |
| social | Social network identifier. Format: `social:{network}/{user-id}` * {network} = The social network name. Valid values: Odnoklassniki, VK. * {user-id} = The user identifier for that social network.                                                                                                                                                                                                                                     | social:Odnoklassniki/test123@abcmail.com | 3-254        |