IP addresses are associated with hostnames through A (IPv4) and AAAA (IPv6) DNS records. You can use the DNS lookup tool to resolve hostnames.
It's worth noting that a domain can have multiple IP addresses, especially in scenarios like load balancing or content delivery networks (CDNs). As such, you may encounter multiple IP addresses in the results. Additionally, IP addresses can change over time due to DNS updates or server configurations, so ensure you have the most up-to-date information when needed.