requesting-number asked not to receive messages from blocked-number. The platform adds one when an off-net number texts STOP, and removes it on START. While it is active, an SMS or MMS from blocked-number to requesting-number is refused with 409.{
"id": "8d5e957f297893487bd98fa830fa6413b2d6f6a1",
"requesting-number": "+15555550142",
"blocked-number": "+15555550100",
"domain": "example.com",
"status": "active",
"created-datetime": "2026-09-01T14:30:00+00:00",
"last-modified-datetime": "2026-09-02T08:00:00+00:00"
}