Which Browsers don't support ids for in page navigation (fragid)?

Question

In HTML5, name is no longer a valid attribute of the anchor tag (<a name="yadayada">). It has been mentioned that older browsers do not recognize the the new recommended approach (<a id="yadaya"> or any id for that matter). What are the browsers which don't recognize ids for in page navigation (fragids)? Are we talking about Netscape-era browsers or the usual suspect, Internet Explorer 6?

Answer 1

Netscape-era. IE6 supports them just fine.

Answer 2

IE 5 supports them too. Perhaps even IE 4.

Netscape 4.7 does not support id