On /connect play.noghost.net server you can find following maps:
5+.pk3
6++.pk3
7+
Bal3dm3.pk3
dboxctf2.pk3
duck.pk3
fr3dm1.pk3
jaxdm8
klznureht.pk3
mountain64.pk3
Opium.pk3
overkill.pk3
padshop.pk3
padkitchen.pk3
pillcity.pk3
pro-q3tourney7.pk3
psidm7.pk3
splatdm2
strafez.pk3
szq2dm1ish
ts_dm5.pk3
xcm_tricks2.pk3
koz24.pk3
dangercity.pk3
coldrun.pk3
jjm2.pk3
ultimate2.pk3
agorafobia.pk3
momentum.pk3
ASSault.pk3
crescent.pk3
subair.pk3
On the /connect candy.noghost.net server
you can find the ctf wave maps and more, basically most of the ctf maps used in quake are uploaded to this server... to many to name lol