Linux – “yum repolist” showing repo list but there is NO repo file in /etc/yum.repo.d

Could any one look into the issue and help ?

I have a Red Hat server which has Red Hat subscription and I tried to get all Security patches list using /usr/bin/yum list-security –security. After executing above command, I see all the packages that listed are SuSE packages. Not sure why.

[root@test ~]# /usr/bin/yum list-security --security 
Loaded plugins: rhnplugin, security
slessp3-bash-9740 security bash-3.2-147.20.1.x86_64
slessp3-bash-9780 security bash-3.2-147.22.1.x86_64
Slessp3-binutils-201501-10214 security binutils-2.23.1-0.23.15.x86_64

Tried to verify the yum repository using yum repolist and I see the SuSE repo is enabled. But I didn't see repo file under yum.repos.d to disable.

[root@test ~]# yum repolist 
Loaded plugins: rhnplugin, security
repo id repo name status
rhel-source Red Hat Enterprise Linux 5Server - Source enabled: 5,076
rpmforge RHEL 5Server - RPMforge.net - dag enabled: 11,403
sles11-sp3-pool-x86_64 SLES11-SP3-Pool for x86_64 enabled: 2,862
sles11-sp3-suse-manager-tools-x86_64 SLES11-SP3-SUSE-Manager-Tools x86_64 enabled: 121
sles11-sp3-updates-x86_64 SLES11-SP3-Updates for x86_64 enabled: 3,618
repolist: 23,080

[root@test yum.repos.d]# ls -lrt
total 28
-rw-r--r-- 1 root root 561 Jan 14 2015 rhel-debuginfo.repo
-rw-r--r-- 1 root root 1128 Mar 15 2012 rpmforge.repo
-rw-r--r-- 1 root root 728 Mar 15 2012 mirrors-rpmforge-testing
-rw-r--r-- 1 root root 739 Mar 15 2012 mirrors-rpmforge
-rw-r--r-- 1 root root 222 Sep 17 12:20 rhel-source.repo