What does a DNSBL hit mean?
The list published a 127.0.0.0/8 answer for the reversed address. A Spamhaus 127.255.255.x answer from a public resolver is a refusal, not a listing.
DNSBL
Blacklist check
Looks up the address on a few public DNS blocklists through Cloudflare DNS-over-HTTPS (1.1.1.1). A hit means that list published a 127.0.0.0/8 answer. Results are cached for one hour.
Spamhaus can answer 127.255.255.x when it refuses a query from a public resolver. That row is marked as a refusal, not a listing. Being absent here does not mean every mail server will accept mail from the address.