link-lab
AS51224 (link-lab) announces at least 21 prefixes:
91.216.216.0/24
NET-UM-BMBF-01
1970-01-01
91.216.216.0-91.216.216.255
194.13.70.0/24
DE-UNBELIEVABLE-20180514
194.13.68.0-194.13.71.255
194.13.71.0/24
2001:67c:254::/48
NET6-UM-BMBF01
2001:67c:254::-2001:67c:254:ffff:ffff:ffff:ffff:ffff
2a05:e747::/33
LEITWERT-RESEARCH
2a05:e747::-2a05:e747:ffff:ffff:ffff:ffff:ffff:ffff
2a05:e747:8000::/34
2a05:e747:c000::/35
2a05:e747:e000::/36
2a05:e747:f000::/37
2a05:e747:f800::/38
2a05:e747:fc00::/39
2a05:e747:fe00::/40
2a05:e747:ff00::/41
2a05:e747:ff80::/42
2a05:e747:ffc0::/43
2a05:e747:ffe0::/44
2a05:e747:fff0::/45
2a05:e747:fff8::/46
2a05:e747:fffc::/47
2a05:e747:fffe::/48
2a05:e747:ffff::/48
0