International dialing through a relay

1. A method comprising:

receiving, at a server and from a communication application executing on a device of a caller, a communication that includes a destination number, the receiving of the communication being triggered by the caller initiating a call to the destination number at the device, the initiating the call to the destination number being in response to an operation selected from the group consisting of receiving a selection of a contact from a contact list, receiving a manual input of the destination number, and receiving a verbal command to call the destination number;

storing, in a database of the server, a mapping entry pair that maps the destination number to a single call attribute;

receiving, at the server, a call to a pool number from the caller;

determining, using a hardware processor, a call attribute from the call; and

relaying the call to the destination number based on the call attribute from the call matching the single call attribute mapped to the destination number.

2. The method of claim 1 , wherein the single call attribute is an identifier of the caller.

3. The method of claim 1 , wherein the single call attribute is a phone number of the caller.

4. The method of claim 1 , further comprising providing the pool number to the communication application in response to the receiving of the communication, wherein the single call attribute is the pool number.

5. The method of claim 1 , wherein the single call attribute is included in the communication that includes the destination number.

6. The method of claim 1 , wherein the communication is received via short messaging service (SMS), over the Internet, or via a further call conducted prior to the call to the pool number.

7. The method of claim 1 , further comprising removing the mapping entry pair that maps the destination number to the single call attribute based on expiration of a predetermined period of time.

8. The method of claim 1 , further comprising removing the mapping entry pair that maps the destination number to the single call attribute based on expiration of a predetermined period of time after the relaying of the call to the destination number.

9. A machine-readable storage medium having no transitory signals and storing instructions that, when executed by the at least one processor of a machine, cause the machine to perform operations comprising:

receiving, at a server and from a communication application executing on a device of a caller, a communication that includes a destination number, the receiving of the communication being triggered by the caller initiating a call to the destination number at the device, the initiating the call to the destination number being in response to an operation selected from the group consisting of receiving a selection of a contact from a contact list, receiving a manual input of the destination number, and receiving a verbal command to call the destination number;

storing, in a database of the server, a mapping entry pair that maps the destination number to a single call attribute;

receiving, at the server, a call to a pool number from the caller;

determining a call attribute from the call; and

relaying the call to the destination number based on the call attribute from the call matching the single call attribute mapped to the destination number.

10. The machine-readable storage medium of claim 9 , wherein the single call attribute is an identifier of the caller.

11. The machine-readable storage medium of claim 9 , wherein the single call attribute is a phone number of the caller.

12. The machine-readable storage medium of claim 9 , wherein the operations further comprise providing the pool number to the communication application in response to the receiving of the communication, wherein the single call attribute is the pool number.

13. The machine-readable storage medium of claim 9 , wherein the single call attribute is included in the communication that includes the destination number.

14. The machine-readable storage medium of claim 9 , wherein the communication is received via short messaging service (SMS), over the Internet, or via a further call conducted prior to the call to the pool number.

15. The machine-readable storage medium of claim 9 , wherein the operations further comprise removing the mapping entry pair that maps the destination number to a single call attribute based on expiration of a predetermined period of time.

16. The machine-readable storage medium of claim 9 , wherein the operations further comprise removing the mapping entry pair that maps the destination number to the single call attribute in response to the connecting of the call to the destination number.

17. A system comprising:

one or more hardware processors of a server configured to perform operations comprising:

receiving, at the server and from a communication application executing on a device of a caller, a communication that includes a destination number, the receiving of the communication being triggered by the caller initiating a call to the destination number at the device, the initiating the call to the destination number being in response to an operation selected from the group consisting of receiving a selection of a contact from a contact list, receiving a manual input of the destination number, and receiving a verbal command to call the destination number;

storing, in a database of the server, a mapping entry pair that maps the destination number to a single call attribute;

receiving, at the server, a call to a pool number from the caller;

determining a call attribute from the call; and

relaying the call to the destination number based on the call attribute from the call matching the single call attribute mapped to the destination number.