$ORIGIN . $TTL 1 ; OK @ APL ; The simplest variant - blank list @ APL 1:0.0.0.0/0 ; Minimal ipv4 prefix length @ APL 1:255.255.255.255/32 ; Maximal ipv4 prefix length @ APL 1:255.255.255.255/30 ; Prefix length isn't multiple of 8 @ APL 2:::/0 ; Minimal ipv6 address @ APL 2:0::0/0 ; Minimal ipv6 prefix length @ APL 2:0::0/128 ; Maximal ipv6 prefix length @ APL 2:FFFF:FFFF:FFFF::/2 ; Trailing zeroes test @ APL !1:0.0.0.0/0 ; Negation flag @ APL 1:0.0.0.0/0 1:255.255.255.255/32 ; More APLs @ TYPE42 \# 4 00010000 ; TYPE + Hexadecimal rdata @ TYPE42 1:0.0.0.0/0 ; TYPE @ APL \# 0 ; Zero length rdata @ apl 1:0.0.0.0/0 ; Type in lower-case ; KO @ APL 0:0.0.0.0/32 ; Bad address family @ APL x:0.0.0.0/32 ; Bad address family @ APL !x:0.0.0.0/32 ; Bad address family @ APL 2:0.0.0.0/32 ; Address family mismatch @ APL 1:0::0/32 ; Address family mismatch @ APL 1:0.0.0.0/33 ; Prefix length is too long @ APL 2:0::0/129 ; Prefix length is too long @ APL 2::/0 ; Bad ipv6 address @ APL 2:0::0/x ; Bad prefix length @ APL 1:0.0.0.0/ ; Missing prefix length