Overview

Resolves one or more domain names to IPv4 and IPv6 addresses by using multiple Resolve-DnsName query paths.

The script attempts resolution using:

• Standard Windows name resolution with Resolve-DnsName
• Resolve-DnsName -DnsOnly
• Resolve-DnsName -Server <server> -DnsOnly

This helps identify cases where normal Windows resolver behavior differs from direct DNS server queries, such as on multihomed systems, hosts with mixed DNS server configuration, or systems affected by DNS client policy.

Resolution Strategy

For each domain name, the script attempts the following lookups:

1. Resolve-DnsName -Type A
2. Resolve-DnsName -Type AAAA
3. Resolve-DnsName -Type A -DnsOnly
4. Resolve-DnsName -Type AAAA -DnsOnly
5. Resolve-DnsName -Type A -DnsOnly -Server <server>
6. Resolve-DnsName -Type AAAA -DnsOnly -Server <server>

If no explicit DNS server is provided, the script enumerates the DNS servers configured on the local system and queries each one directly.

Parameter Sets

Auto

Uses the DNS servers configured on the local host.

ExplicitServer

Uses only the DNS server or servers supplied through -DnsServer.

Parameters

Name	Type	Required	Parameter Set	Description
DomainNames	string[]	Yes	Auto, ExplicitServer	One or more domain names to resolve.
DnsServer	string[]	Yes	ExplicitServer	One or more DNS servers to query directly with Resolve-DnsName -Server.

Output

The script returns one or more objects for each successful resolution attempt.

Each output object contains:

Property	Type	Description
Query	string	The original domain name supplied to the script.
Name	string	The resolved DNS name returned by Resolve-DnsName.
Type	string	The record type returned, typically A or AAAA.
Address	string	The resolved IP address.
Method	string	The resolution method used. This is always Resolve-DnsName.
Server	string	The DNS server used for direct queries. This is blank for standard resolver lookups.
DnsOnly	bool	Indicates whether the lookup was performed with -DnsOnly.

Duplicate results are removed before output.

Behavior Notes

• The script only records successful results.
• Failed lookups are suppressed unless verbose output is enabled.
• Standard resolver lookups and direct DNS queries may return different results depending on local DNS client behavior.
• This script is useful for troubleshooting cases where Resolve-DnsName, nslookup, and application-level resolution do not behave the same way.
• Both IPv4 (A) and IPv6 (AAAA) resolution paths are attempted.

Examples

Dns Resolution

Name       : dc1.lab.net
IPAddress  : 192.168.1.2
RecordType : A