I suspect so.
Discussion
It's not a bad idea to do this to help increase likelihood of message being read. Certainly better then spamming/blasting to all relays, even if it does create more short lived network connections
Good news is I can find your relays from querying relay.damus.io
wss://chorus.mikedilger.com:444 (read, write)
wss://nos.lol (write only)
wss://nostr.einundzwanzig.space (read, write)
wss://nostrue.com (write only)
wss://offchain.pub (read, write)