siddillon.com — AI Site Grade

Analysis

I have enough data. Let me compile the audit.

Sid Dillon's live site is a 403 wall for every AI crawler and every browser — the domain returns zero content to any HTTP client, making it functionally invisible to all AI engines.

Total AI Crawler Blackout

Every AI bot tested — GPTBot, ClaudeBot, PerplexityBot, Google-Extended, OAI-SearchBot, ChatGPT-User, Bytespider, Applebot-Extended, anthropic-ai, Perplexity-User — receives a 403 Forbidden from Cloudflare on both siddillon.com and www.siddillon.com. The browser baseline also gets 403. The site returns a 237KB HTML shell with the bare title "Dealer Website" and zero visible content. No robots.txt is served (also 403). No llms.txt exists (also 403). No sitemap.xml is accessible (also 403). The site is hosted on Cloudflare behind what appears to be a blanket IP/UA block or a JS-challenge wall that fails for all automated fetches. The Wayback Machine confirms the site was live and serving content (200 status) as recently as December 14, 2025, with a full DealerInspire-powered automotive site — meaning the current 403 state may be a misconfigured WAF rule or a temporary outage, but it has persisted long enough that no AI crawler can index any page.

Cold-Knowledge Gap vs. Actual Content

The LLM cold-knowledge query correctly identifies Sid Dillon as a family-owned Nebraska auto group selling Chevrolet, Buick, GMC, Cadillac, Ford, and other brands, with multiple locations around Lincoln and Omaha. This prior knowledge is accurate and reasonably detailed — it even mentions the collision center and truck center. However, the cold model knows nothing about the site's current state (it assumes the site is accessible). The gap is not in what the model knows about the brand, but in the complete absence of any live retrievable content to confirm, update, or enrich that knowledge. The site's actual content (visible only via Wayback) describes 10+ dealership locations across Blair, Fremont, Crete, Lincoln, and Wahoo, Nebraska, selling Chevrolet, Buick, GMC, Cadillac, Mazda, Nissan, Genesis, Chrysler, Dodge, Jeep, Ram, Fiat, Hyundai, and Ford — plus a Dillon Brothers motorcycle division. The blog was actively posting as recently as September 2025 with first-look articles on 2026 model-year vehicles.

Schema and Content Posture (Historical)

The Wayback snapshot reveals the site uses AutoDealer and Organization JSON-LD schema with proper @id references, breadcrumb lists, and WebPage markup. The homepage AutoDealer schema contains a priceRange of "$-$

External Signal Absence

DuckDuckGo web search returns zero results for any query containing "Sid Dillon" — no reviews, no Reddit threads, no press mentions, not even the dealership's own pages. This is highly unusual for a multi-location auto group that has been operating since 1976. The DNS records show standard Microsoft 365 mail (siddillon-com.mail.protection.outlook.com) and multiple Google site verification TXT records, confirming the domain is actively managed. The complete absence from search results suggests either a very recent deindexing event or a DuckDuckGo-specific crawl issue — but given the 403 wall, it is more likely that the site has been inaccessible to crawlers long enough that search engines have dropped it.

Findings

1. All AI crawlers receive 403 Forbidden from Cloudflare High

   Every tested AI bot (GPTBot, ClaudeBot, PerplexityBot, Google-Extended, OAI-SearchBot, ChatGPT-User, Bytespider, Applebot-Extended, anthropic-ai, Perplexity-User) receives a 403 Forbidden on both siddillon.com and www.siddillon.com. The browser baseline also gets 403. The site returns a 237KB HTML shell with title 'Dealer Website' and zero visible content.

   What to change: Configure Cloudflare WAF to allow AI crawler user agents and serve content to all HTTP clients. Remove the blanket IP/UA block or JS-challenge that fails for automated fetches.

2. robots.txt returns 403, no crawler directives High

   The robots.txt file at siddillon.com returns a 403 Forbidden, meaning no crawler directives are accessible. This prevents AI bots from learning which paths are allowed or disallowed.

   What to change: Serve a valid robots.txt that allows AI crawlers to access the site, e.g., by unblocking the path or hosting it outside the Cloudflare block.

3. Sitemap.xml returns 403, no URL discovery High

   The sitemap.xml at siddillon.com returns a 403 Forbidden, preventing search engines and AI crawlers from discovering the site's pages.

   What to change: Serve a valid sitemap.xml that lists all important pages, and ensure it is accessible to crawlers.

4. llms.txt file returns 403, no AI-specific guidance Medium

   The llms.txt file at siddillon.com returns a 403 Forbidden, meaning AI crawlers cannot retrieve any AI-specific instructions or content summaries.

   What to change: Create and serve an llms.txt file with a summary of the site's content and links to key pages, and ensure it is accessible.

5. Zero search results for Sid Dillon on DuckDuckGo High

   Multiple web searches for 'Sid Dillon' and related queries returned zero results on DuckDuckGo, indicating the site has been deindexed or is inaccessible to search crawlers.

   What to change: Resolve the 403 issue to allow search engine crawlers to index the site, then submit the sitemap to search consoles.

6. Organization schema has empty sameAs array Low

   The JSON-LD Organization schema on the homepage includes an empty sameAs array, missing links to social media profiles that could help AI models verify and enrich brand knowledge.

   What to change: Populate the sameAs array in the Organization schema with URLs to the dealership's social media profiles (Facebook, Instagram, etc.).

7. AutoDealer schema has empty streetAddress field Low

   The AutoDealer JSON-LD schema on the homepage contains an address with an empty streetAddress field, which may reduce the schema's effectiveness for local AI queries.

   What to change: Complete the streetAddress field in the AutoDealer schema with the correct physical address.

8. No FAQ schema detected on the site Low

   The site does not use FAQ schema, which is a missed opportunity to provide direct answers to common customer questions in AI search results.

   What to change: Add FAQ schema to pages that answer common questions about inventory, financing, or services.

What's working

• LLM cold knowledge correctly identifies Sid Dillon as Nebraska auto group — The LLM correctly knows Sid Dillon as a family-owned Nebraska auto group selling multiple brands with locations around Lincoln and Omaha, including collision and truck centers.
• Homepage uses AutoDealer and Organization JSON-LD schema — The Wayback snapshot shows the site uses AutoDealer and Organization JSON-LD schema with proper @id references, breadcrumb lists, and WebPage markup, which helps AI understand the site structure.
• Blog actively posting 2026 model-year previews as of September 2025 — The blog contains recent posts about 2026 model-year vehicles, providing fresh content that could be valuable for AI training and search visibility.
• New vehicles page has rich content with tables and lists — The new vehicles page (via Wayback) contains 2401 words with tables, lists, and comparison language, which are strong answer-format signals for AI.
• Site describes 10+ dealership locations across Nebraska — The site content lists multiple locations in Blair, Fremont, Crete, Lincoln, and Wahoo, selling a wide range of brands including Chevrolet, Buick, GMC, Cadillac, Mazda, Nissan, Genesis, Chrysler, Dodge, Jeep, Ram, Fiat, Hyundai, and Ford, plus a motorcycle division.
• Domain has active DNS and Microsoft 365 mail configuration — DNS records show standard Microsoft 365 mail and multiple Google site verification TXT records, confirming the domain is actively managed and not abandoned.