Well, after some careful analysis I found what I think is the best list for those domains [in boto's source code](https://github.com/boto/boto/blob/develop/boto/sqs/__init__.py).

The fully working new url_bases should be: `"https?://(.*?)(queue|sqs)(.*?).amazonaws.com"` which passes this test:

```python
>>> from boto.sqs import regions
>>> for region in regions():
...     if not re.match("https?://(.*?)(queue|sqs)(.*?).amazonaws.com", 'https://' + region.endpoint):
...         print 'failed', region.endpoint
```

If you could merge that into my pull request and close everything, I would appreciate it, thanks!