Top-level domain (e.g. ai.) in Allowlist-only mode

[My9xVm]

Is it normal?

[date time]	ip	fonts.googleapis.com	A	REJECT	0ms	-

[date time]	ip	ai	A	SYNTH	0ms	-

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;fonts.googleapis.com.		IN	A
;; ANSWER SECTION:
fonts.googleapis.com.	30	IN	HINFO	"This query has been locally blocked" "by dnscrypt-proxy"

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4048
;; QUESTION SECTION:
;ai.				IN	A

https://github.com/DNSCrypt/dnscrypt-proxy/wiki/Filters#a-note-on-allow-lists
http://ai/