I think it is red oak, judging by the red in it. But, I’m no expert.
Wood ID is a bit of a hobby with me.
If you suspect your wood is oak, shave across the end grain of a small scrap with an single-edge razor blade or extremely sharp knife. You don't need to shave a very wide area - just enough to reveal a few rings. All will be revealed.
This is what you will see with red vs white oak under low power magnification.
These are easily visible with a simple 10x hand lens. I use a low-power stereo microscope in my shop which is easier.
Both red and white oak have fairly wide rays (vertical lines in these photos), distinctive large early wood pores, (at the lower junction of each ring) and what I call distinctive "tornadoes" of latewood pores. Latewood pores are at the top of the visible ring, are generally small in size, and often have distinctive configurations.
Note that large earlywood pores of white oak are filled with what might look like tiny crystals call tyloses; red oak pores are empty. The clogged white oak pores are what makes them good for outdoor furniture and whiskey barrels.
However, Red oak generally has a uniform slightly "redish" color unlike white oak. It doesn't oftan have the red streaks shown in your piece. I see these more in other species, for example Canary wood.
Useful reading is the Wood Database article on identifying wood. The Wood Database also has end grain photos of every species. See section 7.
www.wood-database.com
And if you care, note the instructions at the bottom of the article on how to get professional wood ID.
Or better, the book "Identifying Wood" by R. Bruce Hoadley.
Or do what many do, just make up a species name and write it on the bottom. That's how I got started in wood ID - someone passed around a bowl labeled "Cherry" on the bottom. One quick look at an end grain section did not show the diffuse porosity distinctive in all cherry. To avoid loss of respect by those who know, maybe don't write a species name on the bottom! If someone asks, just say "don't know, what do you think!"
JKJ