Overview
JavaScript and CAPTCHA lead Réunion's secondary barriers
| Value | |
|---|---|
| WAF | 94.5% |
| Antibot | 19.1% |
| CAPTCHA | 23.1% |
| JavaScript | 40.6% |
| Rate Limiting | 11.9% |
| TLS | 17.1% |
WAF covers 94.5% of Réunion's 996 surveyed sites. JavaScript leads secondary barriers at 40.6%, with CAPTCHA at 23.1% and Antibot at 19.1% closely grouped below.
Barrier Landscape
JavaScript tops Réunion's active secondary defences
| Value | |
|---|---|
| WAF | 94.5% |
| Antibot | 19.1% |
| CAPTCHA | 23.1% |
| JavaScript | 40.6% |
| Rate Limiting | 11.9% |
| TLS | 17.1% |
| Has robots.txt | 81.4% |
| Blocks AI crawlers | 12.9% |
After WAF at 94.5%, JavaScript stands alone at 40.6% as the most-deployed secondary barrier. CAPTCHA (23.1%), Antibot (19.1%), TLS (17.1%), and Rate Limiting (11.9%) form a tighter cluster below.
Two barriers is Réunion's modal configuration
| % of sites | |
|---|---|
| 0 barriers | 3.5% |
| 1 barrier | 31.1% |
| 2 barriers | 36% |
| 3 barriers | 18.6% |
| 4 barriers | 6.8% |
| 5 barriers | 3.5% |
| 6 barriers | 0.4% |
3.5% of Réunion's sites carry no detectable barrier. Two barriers is the most common configuration at 36.0% of sites. Sites with three or more barriers together account for 29.3% of the sample.
Most Réunion sites are Simple to access
| Mean recommended tier | |
|---|---|
| All sites | 1.6 |
With a median of 1 and mean of 1.57, Réunion's sites lean toward Simple access. 56.2% of sites sit at Tier 1 — a majority. The 10.6% at Tiers 3–5 pull the mean above 1.
Nine in ten Réunion sites are Simple or Easy to access
| % of sites | |
|---|---|
| 1 - Simple | 56.2% |
| 2 - Easy | 33.1% |
| 3 - Moderate | 8.7% |
| 4 - Complex | 1.5% |
| 5 - Advanced | 0.4% |
Tier 1 is the largest group at 56.2% of Réunion's sites. Tier 2 adds 33.1%, reaching 89.3% combined. Tier 3 accounts for 8.7%, Tier 4 for 1.5%, and Tier 5 for 0.4%.
robots.txt
AI crawlers top Réunion's robots.txt bot categories
| % of sites | |
|---|---|
| AI crawlers | 15.5% |
| SEO / search indexing | 12.4% |
| SEO audit tools | 14.4% |
| Commercial scrapers | 6.9% |
| Social / content scrapers | 6.3% |
| Archive / research crawlers | 5.4% |
| Monitoring / uptime bots | 0.3% |
AI crawlers are named in 15.5% of Réunion's 996 sites — the top category. SEO audit tools follow closely at 14.4%, with SEO / search indexing at 12.4%. Figures cover all sites including those without robots.txt.
Uniform rules are Réunion's most common robots.txt posture
| % of sites | |
|---|---|
| Uniform per-agent rules (no path mixing) | 40.6% |
| Path-level mixed rules for same agent | 35.4% |
| Allow-only (no disallow rules) | 2.4% |
| Mixed AI posture (block some, allow others) | 2.2% |
| Blanket Disallow: / | 2.9% |
18.6% of Réunion's sites publish no robots.txt. Uniform per-agent rules account for 40.6% of all sites; path-level mixed rules for 35.4%. Blanket Disallow: / applies to 2.9% of all sites.
GPTBot faces the most Disallow rules in Réunion's robots.txt
| Disallowed | Allowed (whitelisted) | |
|---|---|---|
| GPTBot | 10.2% | 2% |
| CCBot | 7.6% | 0.8% |
| ClaudeBot | 7.2% | 1.2% |
| Google-Extended | 7.6% | 1.2% |
| Bytespider | 6.4% | 0.2% |
| meta-externalagent | 3.1% | 0.3% |
| ChatGPT-User | 5.6% | 2.7% |
| PerplexityBot | 5.2% | 2.1% |
| Applebot-Extended | 4.3% | 0.2% |
| OAI-SearchBot | 3.1% | 1.9% |
| anthropic-ai | 3.9% | 0.5% |
GPTBot is Disallowed by 10.2% of Réunion's 996 sites and explicitly Allowed by 2.0%. ChatGPT-User carries the highest explicit Allow rate at 2.7%. All figures include sites without robots.txt.
Multiple Réunion sectors all name at least one bot to restrict
| % of sites | |
|---|---|
| Agriculture | 100% |
| Biotech | 100% |
| Civil Engineering | 100% |
| Computer & Video Games | 100% |
| Design | 100% |
| Entertainment | 100% |
| Military | 100% |
| Museums | 100% |
| Newspapers | 100% |
| Publishing | 100% |
| Retail | 100% |
| Adult | 90% |
| Aerospace & Defence | 90% |
| Beauty & Cosmetics | 90% |
| Foreign Language | 90% |
Agriculture, Biotech, Civil Engineering, Computer & Video Games, Design, Entertainment, Military, Museums, Newspapers, Publishing, and Retail all have every surveyed site naming at least one bot to restrict in robots.txt.
Réunion's Graphic Design sites lead in explicitly allowing crawlers
| % of sites | |
|---|---|
| Graphic Design | 71.4% |
| Airlines | 70% |
| Biotech | 70% |
| Import & Export | 70% |
| Mental Health | 70% |
| Photography | 70% |
| Publishing | 70% |
| Retail | 70% |
| Writing & Editing | 66.7% |
| Civil Engineering | 62.5% |
| Accounting & Auditing | 60% |
| Architecture | 60% |
| Consulting | 60% |
| Customer Services | 60% |
| Market Research | 60% |
Graphic Design has the highest named-bot Allow rate in Réunion at 71.4% of sites in that sector. Airlines, Biotech, Import & Export, Mental Health, Photography, Publishing, and Retail follow at 70%.
Industry Patterns
Hospitality is Réunion's hardest sector to access programmatically
| WAF | Antibot | CAPTCHA | JavaScript | Rate Limit | TLS | robots.txt | Blocks AI | Tier | |
|---|---|---|---|---|---|---|---|---|---|
| Hospitality | 100% | 10% | 0% | 40% | 20% | 40% | 70% | 20% | Tier 3 |
| Jewellery & Luxury | 90% | 40% | 10% | 40% | 30% | 60% | 70% | 10% | Tier 2 |
| Apparel & Fashion | 90% | 20% | 30% | 60% | 30% | 40% | 80% | 10% | Tier 2 |
| Beauty & Cosmetics | 100% | 40% | 20% | 60% | 40% | 10% | 90% | 10% | Tier 2 |
| Consumer Electronics | 70% | 10% | 10% | 30% | 10% | 40% | 80% | 10% | Tier 2 |
| Furniture | 100% | 40% | 20% | 40% | 20% | 10% | 60% | 10% | Tier 2 |
| Human Resources | 100% | 50% | 50% | 60% | 40% | 10% | 70% | 0% | Tier 2 |
| Retail | 100% | 0% | 0% | 60% | 20% | 20% | 100% | 50% | Tier 2 |
| Sporting Goods | 80% | 20% | 40% | 20% | 20% | 30% | 70% | 0% | Tier 2 |
| Computer Hardware | 90% | 0% | 0% | 20% | 0% | 50% | 90% | 0% | Tier 2 |
| Transport & Logistics | 80% | 30% | 10% | 30% | 10% | 30% | 80% | 0% | Tier 2 |
| Automotive | 100% | 10% | 0% | 50% | 40% | 20% | 90% | 0% | Tier 2 |
| Design | 100% | 20% | 30% | 40% | 20% | 30% | 100% | 30% | Tier 2 |
| Food & Beverages | 100% | 10% | 30% | 50% | 10% | 20% | 80% | 0% | Tier 2 |
| Mail & Delivery | 80% | 20% | 20% | 20% | 20% | 30% | 70% | 0% | Tier 2 |
Hospitality has the highest mean browser tier at 2.30 and is the only industry with a median of 3, placing it at the top of Réunion's difficulty ranking. Jewellery & Luxury and seven others follow at mean 2.20.
Réunion's most accessible sectors share a floor mean tier of 1.80
| WAF | Antibot | CAPTCHA | JavaScript | Rate Limit | TLS | robots.txt | Blocks AI | Tier | |
|---|---|---|---|---|---|---|---|---|---|
| Real Estate | 100% | 30% | 20% | 80% | 30% | 10% | 90% | 20% | Tier 2 |
| Recruitment & Staffing | 100% | 50% | 40% | 40% | 0% | 10% | 80% | 0% | Tier 2 |
| Manufacturing | 100% | 20% | 20% | 50% | 20% | 30% | 90% | 0% | Tier 2 |
| Pharmaceuticals | 100% | 40% | 20% | 50% | 10% | 10% | 60% | 0% | Tier 2 |
| Science | 100% | 40% | 30% | 40% | 20% | 20% | 80% | 10% | Tier 2 |
| Textiles & Nonwovens | 90% | 0% | 20% | 40% | 10% | 20% | 80% | 0% | Tier 2 |
| Airlines | 100% | 20% | 10% | 70% | 20% | 20% | 80% | 30% | Tier 2 |
| Banking | 90% | 20% | 0% | 0% | 0% | 0% | 70% | 10% | Tier 2 |
| Libraries | 100% | 20% | 0% | 50% | 10% | 10% | 90% | 20% | Tier 2 |
| Maritime | 100% | 40% | 10% | 60% | 30% | 30% | 90% | 20% | Tier 2 |
| Music | 100% | 40% | 30% | 60% | 20% | 20% | 90% | 10% | Tier 2 |
| Publishing | 100% | 20% | 30% | 40% | 10% | 0% | 100% | 40% | Tier 2 |
| Restaurants | 100% | 30% | 30% | 60% | 30% | 10% | 50% | 0% | Tier 2 |
| Travel & Tourism | 100% | 30% | 10% | 70% | 10% | 10% | 70% | 30% | Tier 2 |
| Visual Art | 100% | 50% | 20% | 30% | 10% | 20% | 80% | 10% | Tier 2 |
The lowest mean browser tier in Réunion is 1.80, shared by 15 sectors including Airlines, Banking, Libraries, Maritime, Music, Publishing, Restaurants, Travel & Tourism, and Visual Art.