Access Grok and X in 2026: Clash Domain Rules and DNS Setup (Tested)

Why one outbound for “the whole internet” fails Grok-plus-X sessions

Social feeds and generative assistants mix short HTTPS fetches, long-lived HTTP/2 streams, image and video CDNs, and real-time style updates that do not all benefit from the same exit geography or congestion profile. If your default node peers poorly with the CDN fronting media tiles, you may blame “Grok latency” when the model never received a clean prompt path. If your operating system, mobile browser, and Clash each resolve names through a different resolver, you can waste evenings rotating nodes that were never the root cause.

Clash is built for policy routing: you define proxy-groups, then write rules that send each connection to a group, to DIRECT, or elsewhere. The goal here is not to paste an unreviewed mega-list from a forum thread; it is to pair a compact, verifiable rule block for X and xAI-related traffic with DNS behavior that makes DOMAIN and DOMAIN-SUFFIX matchers fire during real sessions. If you are new to that model, start with the site’s Clash tutorial, then return here for a Grok-and-X-shaped overlay on the same YAML ideas.

How this guide sits next to Gemini, ChatGPT, Claude, and DeepSeek

We already published vendor-specific guides that optimize for Google Gemini account choreography, OpenAI ChatGPT web versus api.openai.com, Anthropic Claude Console and api.anthropic.com, and DeepSeek chat versus API hosts. Those pages are the right references when your failing hostnames live under those companies’ infrastructure. This article targets xAI and X’s hostname families instead: the public web surfaces people use to reach Grok, the API origins SDKs and HTTP clients call, and the social graph hostnames that still power timelines, media, and deep links—even as branding shifts from legacy twitter.com toward x.com.

If you run multiple AI products, keep separate outbound groups or clearly named child selectors so logs stay readable. Merging unrelated vendors into one bucket named AI is convenient for a day and opaque for a month. For editor-centric workflows that are not xAI-specific, our Cursor and GitHub split-routing guide complements this article: it emphasizes process-aware routing and repository traffic, while here we emphasize hostname clarity for social plus Grok stacks. For another vendor’s web-versus-API split, compare with our ChatGPT and OpenAI API guide or our Claude and Anthropic rules guide.

What you are really routing: timelines, media, Grok web, and API origins

X-class sessions typically touch more than one name, and operators can add hosts after product updates—so treat the following as a baseline to confirm in your own logs, not as an eternal static truth.

• Primary site and deep links: x.com and, for compatibility, twitter.com and www.twitter.com where redirects or legacy clients still appear.
• Media and static delivery: twimg.com and related image or video hosts; missing these produces half-rendered timelines that look like censorship when the issue is simply a CDN path on DIRECT or the wrong group.
• Short links: t.co for wrapped URLs; blocking or misrouting it breaks a surprising number of “open in app” flows.
• Broadcast-style experiences: some clients still touch pscp.tv or similarly named hosts; verify on-device rather than assuming desktop-only rules transfer one-to-one.
• Grok and xAI web: consumer-facing Grok experiences may be served from grok.com, x.ai, or subdomains under those trees; the exact landing hostname can shift—reproduce failures with logging enabled.
• xAI HTTP APIs: many integrations call api.x.ai or sibling API hosts documented for your SDK version; always confirm the base URL in current official docs for the product tier you use.

Telemetry, feature flags, authentication brokers, and third-party embeds can add more names. Do not guess: reproduce the failure with logging enabled, read the Server Name Indication or destination names your machine actually uses, then extend the list surgically. If you maintain rules through remote providers, see our custom rules tutorial for merge order and how subscription refreshes can erase personal tweaks.

Why “Grok works in the app but not in the browser” often means capture, not censorship

Browser Grok entry points and native clients may use different TLS fingerprints, different DNS stacks, and different proxy awareness. System proxy settings do not always intercept every helper process, while TUN mode can surface more flows at the cost of complexity. When symptoms split along browser versus native, compare capture mode first. For transparent capture background, read our TUN mode deep dive.

IPv6 and dual-stack gotchas on mobile handoffs

On networks that advertise IPv6, your OS may prefer AAAA records. If your proxy path handles IPv4 and IPv6 asymmetrically, you can see intermittent failures that correlate with switching between Wi-Fi and tethering rather than with xAI itself. When debugging, note whether log lines show v4 or v6 destinations and whether you need explicit IP-CIDR6 DIRECT lines for local ranges, mirroring what you already do for RFC1918 IPv4 space.

Design outbound groups: one bucket or several?

Before editing rules, define proxy-groups entries you can aim at. A single group named XAI-X is enough when the same exit satisfies timelines, Grok web, and API. Three groups—X-Social, Grok-Web, and XAI-API—help when you want different regions, different failover policies, or stricter latency targets for programmatic calls while keeping the feed on a more stable path.

Prefer select when you want manual control, url-test or fallback when you want automatic rotation. The nodes must actually complete TLS to xAI and X endpoints without broken certificate inspection or half-configured IPv6. For scheduling mechanics inside YAML, our proxy groups guide explains selectors, health checks, and nesting without tying the story to a single vendor.

Keep these groups separate from a generic Proxy catch-all so your logs answer a simple question: when Grok failed, did xAI traffic hit the intended policy name? If the answer is no, fix capture or rule order before you chase the fifth node in a list.

Domain rules: conservative matchers and precedence

Clash evaluates rules top to bottom; first match wins. Place LAN exclusions, private ranges, and other high-confidence DIRECT lines before vendor-specific matchers. Then add X and xAI-related names with DOMAIN for exact hosts and DOMAIN-SUFFIX only when you understand the blast radius—DOMAIN-SUFFIX,x.com,XAI-X is simple and broad; it may also route subdomains you did not intend if the operator later introduces edge services you wanted on DIRECT.

Developers who run scripts on servers without a browser still benefit from the same idea: your HTTP client resolves api.x.ai; if resolution is poisoned or split-horizon, the TLS handshake never reaches the policy you wrote. That is DNS-first debugging, not “try another exit in the same city.”

YAML skeleton: LAN first, then social, Grok, and API hosts

Assume your profile already defines proxies and a group named XAI-X. The fragment below is illustrative: adapt names, merge with your provider template, and verify hostnames against your own capture.

# Local and loopback first (adjust to your network)
IP-CIDR,192.168.0.0/16,DIRECT
IP-CIDR,10.0.0.0/8,DIRECT
IP-CIDR,172.16.0.0/12,DIRECT
IP-CIDR,127.0.0.0/8,DIRECT

# xAI / Grok — verify in YOUR logs after vendor updates
DOMAIN,api.x.ai,XAI-X
DOMAIN,grok.com,XAI-X
DOMAIN,www.grok.com,XAI-X
DOMAIN,x.ai,XAI-X
DOMAIN,www.x.ai,XAI-X

# X (Twitter) — media and short links matter for a complete timeline
DOMAIN,x.com,XAI-X
DOMAIN,twitter.com,XAI-X
DOMAIN,www.twitter.com,XAI-X
DOMAIN,t.co,XAI-X
DOMAIN,twimg.com,XAI-X
DOMAIN-SUFFIX,pscp.tv,XAI-X

# Optional wideners after you confirm blast radius in logs
# DOMAIN-SUFFIX,x.com,XAI-X
# DOMAIN-SUFFIX,twitter.com,XAI-X

# Remaining traffic follows your profile (GEOIP, MATCH, etc.)
# MATCH,Auto

If you split social, Grok web, and API across different groups, duplicate the DOMAIN lines with different targets and keep the order consistent with your operational intent. The YAML is not magic; it is a deterministic decision list applied to each connection Clash sees.

RULE-SET workflows for households and small teams

Individuals can maintain a short inline block. Households and teams often prefer a RULE-SET remote file or internal Git snippet so reviewers can diff changes. Meta-class cores support rule providers; the maintenance challenge is the same as inline YAML—document ownership, pin update intervals thoughtfully, and ensure personal overrides survive subscription merges. When a provider refresh reorders rules, rerun your short log check instead of assuming “Grok broke.”

Keep machine-readable comments in a separate changelog if your provider strips comments. Humans forget why twimg.com was carved out; future you will not remember unless you wrote it down outside the auto-generated blob.

When you publish a shared ruleset internally, version it like any other config artifact: semantic tags, a short README that states assumptions (“desktop browsers only,” “includes API for local dev laptops”), and a rollback path. Code review for YAML is boring until the day it prevents an incident; treat AI-and-social vendor rules with the same seriousness as firewall ACLs that touch production egress.

Where hand-written rules beat giant community lists

Community-maintained “social mega-lists” can save time, but they also age unevenly: one contributor’s REJECT line for analytics might block a telemetry hostname your client now requires, or a stale IP-CIDR entry might send traffic to the wrong continent after the vendor renumbers. For X and xAI, logging first and adding lines beats importing ten thousand lines you cannot explain. If you do import a remote set, fork it, pin the URL, and schedule periodic reviews—automatic updates without human attention are how surprises compound.

DNS and fake-ip: the hidden half of correct domain rules

Misconfigured DNS makes split routing look “random.” In fake-ip modes, Clash maps domain queries to synthetic addresses internally; that is elegant until a browser uses a different encrypted resolver and caches divergent answers. Symptoms include intermittent TLS failures, endless loading spinners on Grok panels, and “worked until reboot” behavior on X tabs.

Align deliberately. If applications use DNS over HTTPS directly, those queries may bypass assumptions your DOMAIN rules rely on, because the core observes an IP connection without the domain context you expected. Mitigations are practical, not ideological: route known DoH provider hostnames through the same policy as the app, steer DoH to a resolver you control, or accept IP-based classification and document the trade-off. The objective is consistent name-to-policy mapping across the processes you care about.

When the timeline loads but Grok never answers (or the reverse), compare which resolver each tool uses. IDEs and language runtimes frequently ignore OS proxy settings unless configured; they may still honor HTTP proxies when set, but DNS might be OS-level or library-level. Uniform debugging beats swapping exits blindly.

Fake-ip and “why my DOMAIN rule never matched”

Fake-ip is powerful when every interested application funnels DNS through Clash’s listener. It becomes painful when one stubborn process still talks to 8.8.8.8, a router forwarder, or a browser-integrated DoH endpoint. In those cases you see IP-only flows in logs, premature matches on GEOIP, or final MATCH lines that do not reflect the hostname you thought you were routing. Fix the resolver path first; only then widen suffix rules or add IP-based policies with explicit risk notes.

Poisoned answers, captive portals, and restrictive networks

Not every strange DNS response is malware. Hotels and coffee shops return synthetic answers until you authenticate. Some enterprise filters categorize AI or social domains inconsistently. If Grok fails only on one physical network, test a phone hotspot before you rewrite YAML. Correlation saves time.

Split DNS versus “one resolver to rule them all”

Power users sometimes configure different upstreams for domestic versus foreign names. That can work well when documented, but it increases cognitive load for family machines. Pick a strategy that matches who operates the computer: a disciplined single-path resolver behind Clash is often easier to support than three parallel experiments fighting each other.

Another subtle failure mode is negative caching: a transient NXDOMAIN or SERVFAIL during a flaky network moment gets cached by an intermediate layer, and every subsequent attempt “proves” the hostname does not exist until a TTL expires. When Grok intermittently fails with name-resolution errors in one application but not another, flush caches methodically—browser, OS stub resolver, and any security product that implements its own mini-DNS—and retest on a clean network before editing Clash.

TLS SNI, ECH, and disappearing hostnames on the wire

Most user guides implicitly assume visible SNI hostnames. Encrypted Client Hello and related privacy features change how much a local proxy core can infer without additional configuration. If your client stack enables aggressive privacy modes, you may see more IP-only flows hitting GEOIP or final MATCH lines than you expect. When that happens, either accept broader IP-based policies with documented risk, adjust client settings for controlled debugging, or route known CDN IP ranges with explicit caution. Domain rules express intent about names; if names disappear from the wire, policy must adapt.

System proxy versus TUN for browsers, terminals, and containers

System proxy mode is usually the gentlest first step on desktops: browsers pick it up, and many GUI clients integrate cleanly. Yet terminals, language package managers, and Docker workloads may not use the same environment variables. TUN mode raises capture rates at the cost of occasional conflicts with other VPN products or corporate agents.

A practical sequence is: confirm Clash loads the profile you think it does; reproduce a minimal X scroll plus a short Grok prompt with logs open; if connections never hit the core, escalate capture rather than adding more domain lines. Disable competing full-tunnel VPNs during tests—two layers arguing over routes produces “half the internet works” reports that waste weekends.

Headless API clients and CI

Continuous integration environments often lack a Clash sidecar entirely. The split-routing lessons still apply conceptually—predictable DNS and egress—even when implementation shifts to corporate HTTP proxies or allow-listed NAT gateways. If you develop locally with Clash but deploy to a locked-down server, document the difference so HTTP 401/403 errors are not misread as routing bugs.

Local scripts that read HTTPS_PROXY may still perform DNS resolution through libc before the CONNECT tunnel forms; if resolution fails, no proxy rule ever runs. Exporting ALL_PROXY or teaching libraries to use a SOCKS5 front-end can change that story, but the fix is library-specific. When helping teammates, share a minimal reproduction—ten lines of Python or curl with verbose flags—rather than a screenshot of a GUI.

API keys, logs, and operational hygiene for xAI

Developer guides rightly stress never committing API keys. Operational reality also means not pasting keys into random “test” chat windows and not leaving debug logging enabled on shared machines where logs aggregate to a vendor SIEM. Clash logs can include destination hostnames and timing metadata; depending on verbosity, they may surface enough context to reconstruct usage patterns. Treat log retention like any other sensitive artifact: rotate, redact, and scope access.

When rate limits or quota errors appear, exponential backoff is table stakes. Split routing does not exempt you from polite client behavior—stable proxy paths make it easier to accidentally hammer endpoints from a long-running loop. Instrument your jobs with request IDs and clear error classification so you know whether a 429 is a quota story, a regional capacity story, or your own bug in retry logic.

Mobile browsers, background refresh, and per-app VPN semantics

Phones switch radios aggressively; DNS caches and “Wi-Fi assist” style features can route subflows in ways desktop users rarely see. If you run Clash-class clients on mobile, verify hostnames on the device itself. Do not assume a working laptop profile transfers one-to-one when the mobile client uses per-app VPN semantics or split tunnel lists managed by the OS vendor.

Background refresh may delay when a Grok panel reconnects after sleep; that can look like “Grok is down” when the actual issue is power management starving network tasks. Before rewriting rules on mobile, compare behavior on a stable charger-connected session with background restrictions lifted.

Verification workflow you can repeat in about a minute

First, confirm the active profile and that local overrides survived any subscription refresh. Second, open logs and run a minimal social test: load X, scroll a few screens, open a media tile. Third, run a minimal Grok test in the same browser profile. Fourth, run a minimal API test from the same machine—curl or a tiny script—to api.x.ai using your real key in a safe environment. Fifth, note which rule matched and which outbound group handled each flow. Sixth, only then rotate nodes inside XAI-X if throughput or loss remains suspect.

When authentication misbehaves, widen the window: account-related hosts might still hit DIRECT because an earlier rule swallowed traffic. When streaming stalls, check UDP/QUIC paths and MTU before you assume model saturation.

What to record when something regresses

Capture the profile version, core flavor, capture mode, three example destination hostnames from the failure window, and the network type. Browser updates and OS “secure DNS” toggles are frequent silent variables. A short, structured note turns “it broke again” into a solvable diff.

Symptom cookbook: likely causes before you blame Grok or X

• 401/403 on API calls while the web app works: keys, billing, or organization policy are primary suspects—verify credentials independent of Clash. If only CLI fails, check whether the terminal uses a different proxy or DNS path than the browser.
• Timeline text loads but images never appear: suspect twimg.com on the wrong policy, a block rule, or IPv6 asymmetry; compare one image URL in logs.
• Short links hang: verify t.co is not swallowed by an over-broad REJECT or an upstream that strips redirects.
• Timeouts only on one network: correlate with captive portals, IPv6 preference, or carrier-grade NAT; compare hotspot versus office Ethernet.
• Everything fails after a subscription update: diff merge order—provider templates sometimes insert broad GEOIP or early MATCH lines that bypass your xAI block.
• “Works in incognito, fails in normal profile”: suspect extensions that rewrite headers, force alternate resolvers, or inject corporate inspection certificates differently per profile.
• Intermittent TLS handshake errors: check system clock skew, custom root stores on security appliances, and whether a different exit presents a captive portal HTML page instead of a certificate chain.

Use the list as orientation, not scripture. Logs remain authoritative; cookbooks reduce the search space so you do not spiral through unrelated forum threads late at night.

Making overrides survive subscription churn

Most people import remote profiles. Auto-updates can replace rules wholesale. Prefer client features that prepend or append user snippets, or maintain a local merge file you control. After every refresh, rerun the short verification sequence. Treat it like a smoke test for infrastructure you rely on daily.

Performance tuning without fooling yourself

Latency to inference endpoints is only one variable. Thermal throttling, background sync, and aggressive browser extensions can mimic network stalls. Before you add a sixth domain guess, close heavy tabs, disable a suspect extension briefly, and retest. Separate application slowness from path slowness; Clash only addresses the latter directly.

Sniffing, metadata, and when rules disagree with reality

Some Meta-class deployments enable protocol sniffing to recover hostnames when SNI is opaque. Sniffing can fix mysterious mismatches; it can also break specific sites when certificates or ALPN combinations confuse the heuristic. If you recently toggled sniffing and Grok or X began behaving oddly, treat sniffing as a first-class suspect. For a focused walkthrough, see our article on disabling sniffing and adding rule exceptions before you burn a weekend on node roulette.

Privacy, terms, and realistic expectations

Routing changes path selection; it does not replace compliance with service terms, workplace policies, or regional regulations. Corporate devices may forbid split tunneling. This article assumes you configure a machine you own or legitimately administer.

Prefer the site’s download page for maintained clients; treat upstream GitHub repositories as transparency and issue tracking, not necessarily as the first click for every installer decision.

Putting it together

Stable Grok, xAI API, and X access with Clash in 2026 is less about secret host lists and more about a tight loop: observe names in logs, encode them into focused domain rules aimed at dedicated groups, align DNS with capture mode, fake-ip, and DoH reality, and prove matches before swapping nodes. Compared with global proxy toggles, that approach keeps unrelated traffic on sensible paths, makes social and API failures easier to separate, and survives vendor infrastructure churn if you treat lists as living documents.

For a parallel example aimed at Google’s browser ecosystem, see our Google Gemini rules and DNS guide. When you are ready to install or standardize a maintained Clash Meta-class client, walk through our Clash tutorial and use our download page as the primary path—Download Clash for free and experience the difference.