Coral?

[Jakefrith9225]

[Kane]

No, geologic. Where was this found?

[ynot]

Agree with a non fossil rock.

[Jakefrith9225]

Not sure, found in rocks that have been hauled in.

[izak_]

I agree with geologic.

[Arizona Chris]

Looks like a piece of limestone with erosion from rain perhaps. Not a coral.  A good way to tell a coral is that the "holes" will be all of similar size.