DeepSeek Not Loading?
Clash Rules for DeepSeek Domains and Node Routing

1. Symptoms: Web Chat vs API

Operators often collapse every failure into a single sentence—“DeepSeek is down”—but the engineering story splits once you read logs. The marketing and entry experience may live on www.deepseek.com while the interactive chat UI loads from chat.deepseek.com and streams tokens over long-lived HTTPS connections. If your YAML only lists the apex marketing host, the browser shell can paint while background fetches to the chat subdomain still resolve on a domestic path that your ISP shapes differently, producing endless spinners or half-rendered sidebars. Native wrappers and third-party clients that speak the OpenAI-compatible API usually target https://api.deepseek.com; those calls never touch openai.com, so a profile tuned exclusively for ChatGPT leaves API traffic on DIRECT or on a noisy default pool never meant for sustained JSON streaming.

Transport symptoms differ from account or quota errors. TLS handshake stalls, abrupt TCP resets after you switch regions, and HTTP/2 GOAWAY bursts usually trace to unstable egress, MTU quirks, or multiplexing incompatibilities—not to a missing feature flag inside DeepSeek. Conversely, crisp HTTP 401, 403, or 429 responses with structured JSON bodies typically mean keys, billing, or vendor policy; rewriting Clash rules will not fix an exhausted API budget. Learning that distinction saves hours: either you refine split routing and node selection, or you open a support ticket about credentials. This article stays on the networking side for readers who already have legitimate access and need predictable tunnels.

If rules, proxy-groups, and DNS modes are new, read the configuration overview first. For choosing a desktop UI that exposes connection logs clearly, see Clash Verge vs. Clash for Windows—clear logs matter when you compare web and API failures side by side.

2. Domains DeepSeek Uses

DeepSeek centralizes public branding under deepseek.com. Consumer chat commonly appears on chat.deepseek.com, while documentation, downloads, and account flows may use www.deepseek.com or other first-party subdomains under the same apex. The documented API base for OpenAI-compatible clients is api.deepseek.com; SDKs and curl examples append paths such as /v1/chat/completions to that host. Because Clash matches TLS Server Name Indication rather than URL paths inside encrypted HTTPS, hostname coverage is the correct abstraction: once api.deepseek.com rides your intended outbound, future path changes remain covered as long as the vendor keeps the same SNI.

Real browsers still pull auxiliary requests: analytics, static assets, fonts, and occasionally third-party CDNs. Those names rotate faster than any static article. Treat the table below as a baseline, then extend it with whatever DevTools, mitmproxy, or corporate SSL visibility actually shows after each client update. The sustainable workflow—identical to our ChatGPT guide and Grok guide—is to export failing URLs, collapse them to suffixes, and insert fresh DOMAIN-SUFFIX rows above broad GEOIP buckets or your terminal MATCH rule.

Expanding the list safely

Whenever DeepSeek ships a new onboarding experiment or CDN partner, diff freshly captured hostnames against the Git-managed snippet your team imports through rule-providers. If SSO or billing hops through an unrelated IdP domain, follow corporate policy for that traffic—but do not assume identity redirects replace explicit coverage for deepseek.com itself. TLS inspection appliances can mimic proxy failures; confirm with IT before you discard an otherwise sound profile.

3. Why Other AI Rule Lists Fail Here

Our companion posts for ChatGPT / OpenAI, Grok / xAI, Perplexity, and Claude share the same choreography—ordered rules, dedicated outbound groups, resolver alignment—but the hostname sets are not interchangeable. openai.com will never terminate traffic meant for api.deepseek.com; api.x.ai belongs to another vendor entirely. Importing a popular “AI bundle” rule provider without verifying entries is how engineers end up with impressive YAML that still leaks a critical DeepSeek call to DIRECT.

Routing “all foreign HTTPS” through one catch-all sometimes hides the gap until a chatty web UI opens parallel connections for citations, uploads, and incremental tokens. A dedicated PROXY-DEEPSEEK tag makes regressions honest: when only DeepSeek degrades after a subscription rotates peers, you know exactly which pool to benchmark. It also keeps compliance narratives crisp—auditors can read the suffix list you export without wading through unrelated domains.

Avoid lazy DOMAIN-KEYWORD,deep matchers unless you are actively tailing logs. Keywords false-positive on unrelated marketing pages and false-negative when teams adopt neutral CDN hostnames. Prefer suffix rules anchored to apex names you have actually observed, then widen deliberately.

4. Split Routing Order in Clash

Rule-based split routing keeps domestic SaaS on fast local paths while steering selected HTTPS flows through remote outbounds. DeepSeek sessions are chatty: the interface may open parallel fetches for account state, uploads, and streaming answer tokens. If the first request hits PROXY-DEEPSEEK but a follow-up asset still matches a broad GEOIP rule that sends traffic DIRECT, users perceive random “stuck at ninety percent” behavior that no single refresh fixes. Clash evaluates rules top to bottom; the first match wins. Place your deepseek.com suffix rows (or finer DOMAIN lines if policy demands) above any catch-all foreign bucket or terminal MATCH so they cannot be skipped after a subscription merge reorders lines.

Mode matters as much as ordering. System-proxy users sometimes forget that stubborn binaries ignore OS settings; TUN adopters must confirm the virtual interface captures the processes they care about. Regardless of mode, DNS must agree with how rules resolve names. Fake-IP, redir-host, and custom nameserver-policy blocks can produce answers that differ from what dig prints on the host. When those pipelines diverge, you chase phantoms: the browser thinks it is talking to one address while the core maps another SNI string to a stale fake mapping. Re-read the DNS and mode documentation whenever you toggle TUN, inject DoH upstreams, or import a third-party profile that redefines dns.

For generative workloads, headline throughput is misleading. A stable node that keeps you in the same metro for the entire coding session usually outperforms a peer that flaps every health check and forces the client to rebuild cookies, HTTP/2 state, and vendor-side rate buckets. Design groups around stability first, then optimize latency.

5. Example Rules (YAML Patterns)

The snippets below communicate intent, not a drop-in subscription. Rename outbounds, verify compatibility with your core, and never import anonymous rule packs without auditing them—hostile YAML can forward traffic to attacker-controlled peers.

Create a narrow group so unrelated url-test churn does not steal your AI egress:

proxy-groups:
  - name: PROXY-DEEPSEEK
    type: url-test
    proxies:
      - node-sgp-01
      - node-jp-01
      - node-us-west-01
    url: https://www.gstatic.com/generate_204
    interval: 300
    tolerance: 50

Pin the DeepSeek apex ahead of generic foreign pools. A single suffix covers chat.deepseek.com, api.deepseek.com, and future subdomains unless you intentionally split child zones:

rules:
  - DOMAIN-SUFFIX,deepseek.com,PROXY-DEEPSEEK
  # Optional: explicit lines if you split web vs API compliance zones
  # - DOMAIN,api.deepseek.com,PROXY-DEEPSEEK-API
  # Add CDN or telemetry hosts from your DevTools capture, e.g.:
  # - DOMAIN-SUFFIX,cdn.example.net,PROXY-DEEPSEEK
  # ... your other rules ...
  - MATCH,FINAL

Teams that manage many laptops often publish these rows through a rule-providers URL so operations can hotfix hostname gaps without rebuilding entire profiles. If regulations require isolating API traffic on a datacenter-only outbound, duplicate specific DOMAIN matchers above the broader suffix entry—but expect to revisit the list whenever gateways rotate.

6. Node Selection for Streams

Nodes that win short probes may still collapse when a browser opens many parallel HTTPS connections for uploads, tool calls, and incremental answer tokens. For node selection, pair url-test with a generous tolerance so the group does not yo-yo between regions whenever latency jitters—nothing triggers mystery session banners faster than continent hopping mid-stream. When you need deterministic ordering, wrap the same peers inside a fallback group and measure which upstream survives a five-minute heavy session with real uploads, not just synthetic pings.

Multiplexing (smux, gRPC options, etc.) occasionally interacts poorly with HTTP/2 streaming. If bodies truncate right before the model finishes, test with multiplexing disabled, then re-enable once you identify the culprit. Experimental QUIC paths in Chromium can bypass the TCP assumptions you made while debugging; temporarily disabling QUIC is a valid isolation step, not a permanent lifestyle. Corporate networks sometimes force specific regions or block UDP outright; validate those constraints before you spend nights tuning Clash.

Isolate DeepSeek from a noisy default pool

If your generic “Foreign” group mixes residential, datacenter, and bulk-download peers, carve DeepSeek into PROXY-DEEPSEEK so unrelated traffic cannot starve interactive latency. The YAML cost is trivial; the observability win is enormous when only DeepSeek degrades after an upstream maintenance window.

7. DNS, Fake-IP, and Sessions

DNS is the hidden coupling between your browser, your operating system, and the proxy core. When Clash resolves deepseek.com through its internal stack but Chrome still uses a system resolver that points at an ISP recursor, you can pass SNI checks yet still observe bizarre hangs: the page shell loads from cache while live fetches miss. Start every serious debugging session by listing which resolver owns each interface—Ethernet, Wi-Fi, VPN adapters, and the TUN device—and whether secure DNS is enabled inside the browser independently of the OS. If you terminate DoH inside the browser to a public provider while the core uses fake-ip mapping, expect intermittent divergence until you either disable the browser’s secure DNS for testing or align it with the same policy table your YAML exports.

Operators who forward DNS queries through the same outbound as their web traffic usually get the most predictable results. That might mean sending Clash’s upstream nameserver connections through PROXY-DEEPSEEK or a sibling group, or using proxy-server-nameserver style settings when your core supports them. The opposite failure mode—forcing DoH straight to a resolver hosted in a region your corporate firewall blocks—looks identical to a “DeepSeek outage” even though the service is healthy. Document the tuple that works: which nameserver you used, whether fake-ip is on, and which outbound tag those queries followed.

Fake-IP remains invaluable for split routing, yet it demands discipline. Stale mappings after you switch Wi-Fi networks or suspend a laptop can send traffic to the wrong interface until you flush state or restart the core. IPv6 introduces another fork: if some answers prefer AAAA records while your tunnel only handles IPv4 paths, you will see hangs that disappear when you temporarily disable IPv6 or route it consistently. Browser extensions that ship their own DNS or proxy logic can double-wrap sessions; reproduce bugs with a clean profile before you file upstream tickets.

Finally, account safety systems correlate IP, ASN, and timing. Rapid hopping caused by hyperactive url-test groups can trigger step-up challenges that resemble geo blocks. Keep a steady egress long enough to finish OAuth, then optimize.

8. Self-Check Checklist

Before you blame DeepSeek for an outage, walk through this sequence:

1. Confirm rule hits. In connection logs, verify deepseek.com hosts show PROXY-DEEPSEEK (or your tag), not stray DIRECT lines hiding below a mis-ordered MATCH.
2. Compare resolvers. Compare dig api.deepseek.com on the host with the answer inside Clash’s DNS inspector or temporary debug logging. Mismatches imply fake-ip or DoH drift.
3. Test TLS manually. Run curl -I https://api.deepseek.com and curl -I https://chat.deepseek.com through your mixed or HTTP inbound port—timeouts usually mean transport, while crisp HTTP status codes point to application semantics.
4. Read API errors literally. Structured JSON errors from the OpenAI-compatible API typically cite quota or key issues; chasing YAML in those cases wastes time.
5. Strip extensions and double VPNs. One proxy at a time keeps the signal clean.

Archive the working profile revision in Git whenever you change DNS or nodes. Future you will thank present you after the next macOS or Windows update rewires resolver precedence.

9. Availability and Terms

Changing routes alters how remote services perceive your network path; it does not waive DeepSeek terms, workplace acceptable-use policies, export controls, or local regulations. Use AI products only where you are entitled to do so, respect regional availability, and treat this article as operational guidance rather than legal counsel.

We do not document evading fraud prevention, abuse mitigations, payment verification, or access controls. If a challenge screen appears for legitimate risk reasons, work through official support flows. Our scope stays strictly on transparent Clash configuration for readers who already hold valid accounts. Open-source repositories remain valuable for auditing the client ecosystem; still, install signed builds from the official distribution channel linked below instead of random mirrors.

10. Summary

Reliable DeepSeek access in 2026 hinges on naming the right infrastructure: at minimum DOMAIN-SUFFIX,deepseek.com for web and API traffic, plus any CDN or telemetry suffixes your own captures reveal, then ordering those rules ahead of broad catch-alls. Pair the list with a dedicated outbound, tune node selection for long-lived HTTP/2 streams instead of vanity speed tests, and keep DNS behavior aligned with whichever mode—TUN, system proxy, or mixed port—you actually run. When a regression appears, diff fresh DevTools exports against your YAML instead of importing another vendor’s AI bundle wholesale.

Compared with opaque one-tap VPN apps, Clash shines when teams treat routing as version-controlled infrastructure: logs tell the truth, profiles diff cleanly, and you can prove which domains left which path during an incident review. A maintained client with transparent updates makes that workflow sustainable; grabbing builds from a trusted channel matters as much as YAML hygiene.

Grab installers from this site’s download page whenever you onboard a new machine—then layer the DeepSeek-focused rules on top of a baseline you can reproduce.

→ Download Clash for free and experience the difference