Onionoo stopped to resolve ASN and country code for new relays
Since sometime between 17th and 18th of May Onionoo includes no
"country" (as well as other
"country"-related fields) and
"as_number" fields for new relays. Most probably it's all because
maxmind.com installed MitM-as-a-Service (the OneMoreStep one) and Onionoo backend cannot update appropriate BGP databases from there .
Less probably, it's affected by this commit  and related to #18989 (moved).
 https://geolite.maxmind.com/download/geoip/database/GeoLite2-City-CSV.zip  https://www.maxmind.com/download/geoip/database/asnum/GeoIPASNum2.zip  https://gitweb.torproject.org/onionoo.git/commit/?id=d9c137c426487716213e6d67936fae485056a24e