## Block a handle

`blocked_handles.block(BlockedHandleBlockParams**kwargs)  -> BlockedHandleBlockResponse`

**post** `/v3/blocked_handles`

Blocks a handle — an E.164 phone number, an email address (iMessage
sender), an SMS short code (e.g. `262966`), or an alphanumeric sender
ID. Inbound messages from it are dropped and produce no webhooks, and
direct sends to it are rejected with `403` (error code `2026`); group
sends that include unblocked members are not restricted. Blocking is
idempotent — re-blocking an already blocked handle returns the
existing entry.

### Parameters

- `handle: str`

  The handle to block: an E.164 phone number, an email address, an
  SMS short code (3-8 digits), or an alphanumeric sender ID.

- `reason: Optional[str]`

  Optional free-text note on why the handle was blocked

### Returns

- `class BlockedHandleBlockResponse: …`

  - `blocked_handle: BlockedHandleEntry`

    - `blocked_at: datetime`

      When the handle was blocked

    - `handle: str`

      The blocked handle, normalized (E.164 phone, lowercased email, short code, or sender ID)

    - `reason: Optional[str]`

      Optional note recorded when the handle was blocked

### Example

```python
import os
from linq import LinqAPIV3

client = LinqAPIV3(
    api_key=os.environ.get("LINQ_API_V3_API_KEY"),  # This is the default and can be omitted
)
response = client.blocked_handles.block(
    handle="+12025551234",
    reason="spam",
)
print(response.blocked_handle)
```

#### Response

```json
{
  "blocked_handle": {
    "handle": "+12025551234",
    "reason": "spam",
    "blocked_at": "2026-07-30T16:42:00Z"
  }
}
```