List the SMS numbers owned by the account

The SMS numbers on the account (the SMS number add-on): Czech mobile numbers that receive SMS and send them from your own number. Each carries status (active, or releasing while a release is running or waiting for a retry), the fee monthlyFeeHal per 30-day period and nextChargeAt, when the next one is due. The send limit is in dailySendLimit (20 SMS per 24-hour window during the number's first 30 days, then 50), dailySendRemaining (how many are left, 0 for a number being released) and dailySendResetsAt (when the window ends, null when none is running); the window is shared by all SMS numbers of the account, starts with the first SMS sent and also counts attempts over the limit and SMS the carrier rejected. Listing works even when new purchases are unavailable.