It looks pretty rusted and I would replace if it was located in my bathroom. Note, you'll most likely need to dig out tile around flange to gain access. If you're not handy with plumbing call in a plumber to do the job.

Thanks. I asked on a plumbing forum and they pointed me to Raven Pruducts #BFR7900
or,
Oatey #42777 Moss Bay Replacement Flange
and I found the Oatey in lowes.
It says to carefully cut/break off/remove the old rusted metal ring and replace it with this set of 2 half-rings.

I just had to laugh. I ain't gotta clue how to answer your question...and knew that when I opened your thread. I'm a stupid girl and leave all that stuff to hubby......who I would not exactly label an expert either. But, I just want you to know that only a "bathroom forum friend" would look at your toilet flange and be concerned. Don't you find it kinda comical? Guess we're all in this bathroom remodel "hell" together. That's what America is all about...helping each other out......even with toilet flanges. I wish you many happy flushes to come!

Only yesterday I had no idea what a toilet flange was -- oh happy days of innocence, lost forever! :)