Dear folks, I analyzed data collected on https://sks-keyservers.net/status/. Only the following 36 servers worked at all in the past 6 days:
agora.cenditel.gob.ve keyserver.hyperboria.net.pl zuul.rediris.es pgpkeys.eu pgp.benny-baumann.de keys2.andreas-puls.de pgp.cyberbits.eu keyserver.taygeta.com keys.niif.hu keyserver.snt.utwente.nl pgp.uni-mainz.de pgp.lehigh.edu pgp.circl.lu vm-keyserver.spline.inf.fu-berlin.de keyserver.aktronic.de gozer.rediris.es keyserver.newdieatest.site kis.kim-minh.com pgp.surf.nl zimmermann.mayfirst.org keyserver.escomposlinux.org keys.andreas-puls.de keyserver.dobrev.eu pgp.ocf.berkeley.edu keyserver.insect.com pgp.net.nz sks.srv.dumain.com keyserver.cns.vt.edu pgpkeys.co.uk pgpkeys.uk sks.pod01.fleetstreetops.com sks.infcs.de sks.pod02.fleetstreetops.com keyserver-03.2ndquadrant.com sks.hnet.se pgp.flexyz.com All others are dead since 104 days or more. Cheers Gabor