Comparison Guide

Hostname vs Domain Name

A domain name is a broader DNS identity such as example.com. A hostname is a specific name within that domain, such as mail.example.com or www.example.com.

Domain name

A domain is the parent namespace where many different records and subdomains may exist.

Hostname

A hostname is usually the more specific label you are resolving, connecting to, or investigating in logs and DNS results.

Practical takeaway

In casual conversation people often mix these up, but in technical troubleshooting the distinction can matter a lot.

DNS Lookup Website IP Finder Domain RDAP Reverse DNS A Record Lookup Methodology

Recommended naming and DNS checks

DNS Lookup Inspect how names resolve and which records are present. Website IP Finder Map a named website into IP infrastructure. Domain RDAP Review the domain's registration and public status data. Reverse DNS Connect IPs back to hostnames where PTR exists.

Related naming and DNS comparisons

Reverse DNS vs Forward DNS Compare IP-to-name and name-to-IP lookups. A Record vs CNAME See how hostnames are mapped or aliased. IP Lookup vs Domain Lookup Choose the right starting point for investigation.

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