Hostname

Use Blacklist Hostname to block traffic from specific hostnames or wildcard hostname patterns.

Hostname rules are useful when unwanted traffic repeatedly comes from a known host, cloud provider hostname pattern, or suspicious reverse DNS value.

Marked Screenshot

Marker	Control	What It Does
1	IP Address	Enter one or more IP values.
2	Hostname	Enter the hostname value.
3	Useragent	Open or control this panel item.
4	Guide	Open the related service guide.
5	Hostname Type	Select exact hostname or wildcard hostname type.
6	Hostname	Enter the hostname value.
7	Add Hostname	Add the hostname rule to the list.
8	Remove All	Remove all records in this list after confirmation.

Add Blacklist Hostname

The Add Blacklist Hostname form includes:

Field	Description
Type	Hostname rule type
Hostname	Hostname or wildcard hostname pattern

Supported Types And Examples

Type	Single Example	Bulk Example	Use It For
SINGLE	bad-host.example.com	bad-host.example.com,scanner.example.net	Blocking exact hostnames
WILDCARD	*.example.com	*.example.com,*.example.net	Blocking every hostname under a matching domain pattern

The panel supports comma-separated multi-entry input for adding multiple hostnames at once.

Example Scenarios

Scenario	Type	Value Example
Block one exact hostname	SINGLE	bad-host.example.com
Block two exact hostnames at once	SINGLE	bad-host.example.com,scanner.example.net
Block all subdomains from a hostname pattern	WILDCARD	*.example.com
Block multiple wildcard hostname patterns	WILDCARD	*.example.com,*.example.net

How To Add

1. Open Settings > Blacklist > Hostname.

2. Choose SINGLE or WILDCARD.

3. Enter the hostname value.

4. Click Add.

5. Review the Blacklist Hostname List.

Blacklist Hostname List

Column	Description
Date Time	Time when the rule was created
Type	Rule type
Hostname	Blocked hostname value
Action	Edit or remove the rule

Notes

• Hostname checks depend on hostname data available for the visitor IP.

• Use wildcard entries carefully because they can match many hosts.

• If you want to explicitly allow a host, use Whitelist Hostname.

Related Pages

Page	Purpose
Whitelist Hostname	Allow trusted hostnames
Blacklist IP Address	Block traffic by IP
Blocker V2	Use hostname rules with advanced protection