Hostname → IPv4 CIDR List

Enter hostnames and/or IPs (commas, spaces, or new lines). Lines starting with # are ignored.
Append a CIDR to any entry to preserve it (e.g., example.com/29 or 203.0.113.7/24). Otherwise, defaults to /32.
Outputs are normalized to the network address for the given CIDR and duplicates are removed.

DNS Server (optional)

If blank, system resolver is used by dig. You can specify IP or IP:port.

Hostnames / IPs

Output format

Comma-separated

One per line

Or upload a file

File may contain commas, spaces, or new lines. Max 1 MB.

Resolve Clear

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Output

Notes: Only IPv4 A records are used. Unresolvable names are skipped. Duplicates are removed by normalized network/mask.