Sets

Sets — named collections used by routing and dns rules.

Set types

Type	Contains	Example names
Atomic domain set	Domains, geosite, remote URLs	Custom Proxy, Custom Direct, GFW, CN, Private
Atomic IP set	CIDRs, geoip, remote URLs	Custom Proxy, Custom Direct, CN, Public
Great domain set	Combination of domain sets (include / exclude)	GFW Mode Proxy Domains
Great IP set	Combination of other IP sets	GFW Mode Proxy IPs
App set	Application IDs	Proxy, Direct

Atomic sets are building blocks. Great sets are built from atomic sets (and other great sets).

Great domain sets and great IP sets

A great set does not hold domains or IPs directly. It combines other sets using Include and Exclude lists.

When vx-core checks whether a domain or IP belongs to a great set:

Exclude first — if the destination matches any set in Exclude, the great set does not match.
Include — if the destination matches any set in Include, the great set matches.
Otherwise it does not match.

Great IP sets work the same way, but with IP sets instead of domain sets.

Example: GFW Mode Proxy Domains

In GFW mode, the great domain set GFW Mode Proxy Domains is defined as:

Include: GFW, Custom Proxy, Fallback
Exclude: Custom Direct

A domain in the GFW list (and not in Custom Direct) matches this set.

Mutually exclusive set name

When creating or editing a great domain set or great IP set, you can optionally set a Mutually Exclusive Set Name.

This names the paired opposite set. For example:

CN Mode Direct Domains ↔ CN Mode Proxy Domains

They represent two sets: one include all domains in China mainland, the other include all others.

In the UI, when you pick domain or IP sets for routing rules, both a set and its mutually exclusive name appear in the picker. Lookups also work by either name.

Atomic set

Atomic domain set

Field	Purpose
Name	Unique identifier referenced by routing rules.
Use Bloom Filter	Reduces memory for large sets. There is a small chance (~1%) of false positives — a domain not in the set may be treated as if it were.
Inverse	Flips membership: the set matches destinations that are not in its sources.
GeoSite URL	HTTPS URL to a custom `geosite.dat` file. If empty, VX uses the `geosite.dat` provided by LoyalSoldier.
GeoSite Codes	Categories from geosite data (e.g. `cn`, `gfw`, `private`).
GeoSite Attributes	Sub-filters within a code (e.g. `cn` under `category-games`).
URLs	Remote files downloadable by urls — see URL file types below.
Domains	Manually added domain entries (full domain, suffix, keyword, etc.).

Atomic IP set

Field	Purpose
Name	Unique identifier referenced by routing rules.
Inverse	Same as for domain sets — matches IPs not in the set's sources.
GeoIP URL	HTTPS URL to a custom `geoip.dat` file. If empty, VX uses the `geosite.dat` provided by LoyalSoldier..
GeoIP Codes	Categories from geoip data (e.g. `cn`, `private`).
URLs	Remote files downloadable by urls
CIDRs	Manually added IP ranges.

Supported URL file types

V2ray GeoSite / GeoIP files
Clash Rules

Geo file updates

VX downloads geo files from urls specified in atomic sets periodically.

Configure automatic updates in Settings → General → Auto Update Geo Files:

Setting	Behavior
Auto Update Geo Files	Enables periodic re-download of geo files.
Update Interval	How often to refresh, in days (minimum 1). Default is 7 days.
Update Now	Triggers an immediate download and processing.

Set name cannot be duplicated

Every set name must be unique within its category(domain/ip/app):

An atomic domain set name cannot be same as any other atomic or great domain set name.
A great domain set name cannot be same as any existing atomic or great domain set name.
A new name also cannot be same as another set's mutually exclusive set name.

The same rules apply separately to IP sets (atomic vs great).

Built-in geo sets

VX always has these built-in sets:

Atomic Domain Set

Set	Role
Custom Proxy	This is the set you are editing when you add/remove domains in proxy segment of the simplified view
Custom Direct	This is the set you are editing when you add/remove domains in direct segment of the simplified view

Atomic IP Set

Set	Role
Custom Proxy	This is the set you are editing when you add/remove ips in proxy segment of the simplified view
Custom Direct	This is the set you are editing when you add/remove ips in direct segment of the simplified view

App Set

Set	Role
Proxy	This is the set you are editing when you add/remove apps in proxy segment of the simplified view
Direct	This is the set you are editing when you add/remove apps in direct segment of the simplified view

Simplified routing — quick edits to Custom Proxy / Custom Direct
Routing modes — how sets connect to rules