[CentOS] File permissions

Hello,

I need to know if there is something I am missing about file permission as I believe I am seeing some strange stuff on my system. I have a directory as follows:

drwxrwxrwx 7 root root 4096 Mar 10 13:35 temp

In this directory I have a file:

-rw-r--r-- 1 root root 137 Oct 30 02:16 208-109-248-33test

As a normal user should I be able to rename this file? I believe that only root should be able to modify this file but as a normal user I am able to rename it without elevated privileges as so:

temp $ mv 208-109-248-33test 208-109-248-33-mv

[Sat Mar 10 13:41:05] /temp

temp $ lt 208* -rw-r--r-- 1 root root 137 Oct 30 02:16 208-109-248-33-mv

How is this possible? If it is possible what am I missing or not understanding? Thnx.