Overview
JavaScript is Tanzania's most common secondary barrier
| Value | |
|---|---|
| WAF | 93% |
| Antibot | 21.4% |
| CAPTCHA | 22.9% |
| JavaScript | 41.5% |
| Rate Limiting | 13% |
| TLS | 17.7% |
Tanzania's 1,061-site profile: WAF 93.0%, JavaScript 41.5%, CAPTCHA 22.9%, Antibot 21.4%, TLS 17.7%, and Rate Limiting 13.0% — all within a tight band across barriers.
Barrier Landscape
JavaScript tops Tanzania's active secondary defences
| Value | |
|---|---|
| WAF | 93% |
| Antibot | 21.4% |
| CAPTCHA | 22.9% |
| JavaScript | 41.5% |
| Rate Limiting | 13% |
| TLS | 17.7% |
| Has robots.txt | 80.9% |
| Blocks AI crawlers | 15.2% |
WAF reaches 93.0% of Tanzania's sites. JavaScript (41.5%), CAPTCHA (22.9%), and TLS (17.7%) each sit within a narrow range of their peers across this dataset.
Two-barrier sites are the largest single group in Tanzania
| % of sites | |
|---|---|
| 0 barriers | 4.5% |
| 1 barrier | 31.5% |
| 2 barriers | 33.2% |
| 3 barriers | 17% |
| 4 barriers | 9% |
| 5 barriers | 4.2% |
| 6 barriers | 0.6% |
Two-barrier sites account for 33.2% of Tanzania's 1,061 surveyed sites — the modal count. One-barrier sites are close behind at 31.5%. Sites with three or more barriers account for 30.8%; 4.5% carry none.
Most Tanzania sites are Simple to access
| Mean recommended tier | |
|---|---|
| All sites | 1.6 |
Tier 1 accounts for precisely 50.0% of Tanzania's 1,061 sites — sitting exactly at the median boundary. The mean of 1.64 is drawn upward by the 11.5% of sites requiring Tier 3 or above.
Most Tanzania sites are Simple or Easy to access
| % of sites | |
|---|---|
| 1 - Simple | 50% |
| 2 - Easy | 38.5% |
| 3 - Moderate | 9% |
| 4 - Complex | 1.7% |
| 5 - Advanced | 0.8% |
Tier 1 accounts for 50.0% of Tanzania's sites; Tier 2 adds 38.5%, for a combined 88.5%. Tier 3 accounts for 9.0%, with Tier 4 at 1.7% and Tier 5 at 0.8%.
robots.txt
AI crawlers top Tanzania's robots.txt bot categories
| % of sites | |
|---|---|
| AI crawlers | 16.8% |
| SEO / search indexing | 12.9% |
| SEO audit tools | 13.1% |
| Commercial scrapers | 8.4% |
| Social / content scrapers | 6.7% |
| Archive / research crawlers | 4.3% |
| Monitoring / uptime bots | 0.5% |
AI crawlers are named in robots.txt by 16.8% of Tanzania's 1,061 sites. SEO audit tools (13.1%) rank second — edging SEO / search indexing (12.9%) by 0.2 percentage points.
Uniform rules are Tanzania's most common robots.txt posture
| % of sites | |
|---|---|
| Uniform per-agent rules (no path mixing) | 40.7% |
| Path-level mixed rules for same agent | 34.6% |
| Allow-only (no disallow rules) | 2.4% |
| Mixed AI posture (block some, allow others) | 2.4% |
| Blanket Disallow: / | 2.9% |
19.1% of Tanzania's sites carry no robots.txt. Of those that publish one, 40.7% of all sites use uniform per-agent rules and 34.6% use path-level mixed rules. Allow-only and Mixed AI posture each account for 2.4%.
GPTBot is Tanzania's most-blocked AI agent
| Disallowed | Allowed (whitelisted) | |
|---|---|---|
| GPTBot | 12.2% | 2.1% |
| CCBot | 9.5% | 1% |
| ClaudeBot | 9.1% | 1.1% |
| Google-Extended | 9% | 1.5% |
| Bytespider | 7.7% | 0.6% |
| meta-externalagent | 3.2% | 0.2% |
| ChatGPT-User | 6.4% | 2.3% |
| PerplexityBot | 6.6% | 2.4% |
| Applebot-Extended | 5.4% | 0.6% |
| OAI-SearchBot | 4.5% | 2.1% |
| anthropic-ai | 5.6% | 0.6% |
Of Tanzania's 1,061 sites, GPTBot is named in a Disallow rule by 12.2% — the highest of any agent. PerplexityBot holds the highest explicit Allow rate at 2.4%, followed by ChatGPT-User at 2.3%.
Multiple Tanzania sectors all name at least one bot to restrict
| % of sites | |
|---|---|
| Design | 100% |
| Entertainment | 100% |
| Retail | 100% |
| Adult | 90% |
| Automotive | 90% |
| Beauty & Cosmetics | 90% |
| Computer & Video Games | 90% |
| Consumer Electronics | 90% |
| General | 90% |
| Healthcare | 90% |
| Insurance | 90% |
| Machinery | 90% |
| Mass Media | 90% |
| Newspapers | 90% |
| Online Services | 90% |
Design, Entertainment, and Retail each see every sampled site name at least one bot to restrict in robots.txt — a 100% named-bot Disallow rate. Twelve further sectors in this ranking stand at 90%.
Tanzania's leading sectors explicitly allow crawlers
| % of sites | |
|---|---|
| Airlines | 80% |
| Retail | 80% |
| Public Relations | 71.4% |
| Biotech | 70% |
| Education | 70% |
| Photography | 70% |
| Publishing | 70% |
| Science | 70% |
| Travel & Tourism | 70% |
| Architecture | 60% |
| Automotive | 60% |
| Facilities Services | 60% |
| Furniture | 60% |
| Graphic Design | 60% |
| IT Services | 60% |
Airlines and Retail are jointly at the top of Tanzania's named-bot Allow ranking at 80% each. Retail also appears in the 100% Disallow ranking — placing it among the sectors with both the most active blocking and the most active allow-listing.
Industry Patterns
Five Tanzania sectors reach a Moderate median access tier
| WAF | Antibot | CAPTCHA | JavaScript | Rate Limit | TLS | robots.txt | Blocks AI | Tier | |
|---|---|---|---|---|---|---|---|---|---|
| Hospitality | 90% | 30% | 0% | 60% | 30% | 40% | 60% | 10% | Tier 3 |
| Real Estate | 100% | 10% | 10% | 50% | 40% | 30% | 50% | 20% | Tier 3 |
| Furniture | 100% | 60% | 20% | 50% | 20% | 60% | 60% | 10% | Tier 3 |
| Jewellery & Luxury | 100% | 30% | 20% | 30% | 30% | 50% | 80% | 10% | Tier 3 |
| Equipment & Supplies | 90% | 30% | 20% | 50% | 30% | 0% | 60% | 10% | Tier 3 |
| Retail | 100% | 10% | 0% | 70% | 10% | 10% | 100% | 50% | Tier 2 |
| Apparel & Fashion | 90% | 20% | 30% | 60% | 20% | 30% | 80% | 10% | Tier 2 |
| Beauty & Cosmetics | 80% | 10% | 10% | 40% | 30% | 30% | 90% | 20% | Tier 2 |
| Human Resources | 100% | 80% | 60% | 50% | 40% | 20% | 70% | 10% | Tier 2 |
| Automotive | 100% | 20% | 0% | 40% | 30% | 20% | 90% | 10% | Tier 2 |
| Computer Hardware | 90% | 20% | 0% | 30% | 20% | 30% | 80% | 10% | Tier 2 |
| Consumer Electronics | 80% | 10% | 10% | 40% | 10% | 50% | 90% | 20% | Tier 2 |
| Mail & Delivery | 80% | 40% | 10% | 20% | 0% | 20% | 90% | 0% | Tier 2 |
| Design | 100% | 20% | 30% | 40% | 20% | 30% | 100% | 30% | Tier 2 |
| Education | 100% | 20% | 10% | 30% | 10% | 10% | 80% | 10% | Tier 2 |
Hospitality and Real Estate lead at mean tier 2.80 each; Furniture (2.70) and Jewellery & Luxury (2.60) follow. Equipment & Supplies, Apparel & Fashion, Beauty & Cosmetics, and Human Resources all share a mean of 2.40 — each reaching a Moderate median.
Three Tanzania sectors share the most accessible floor
| WAF | Antibot | CAPTCHA | JavaScript | Rate Limit | TLS | robots.txt | Blocks AI | Tier | |
|---|---|---|---|---|---|---|---|---|---|
| Insurance | 90% | 30% | 0% | 20% | 0% | 20% | 100% | 0% | Tier 2 |
| Maritime | 90% | 10% | 0% | 30% | 10% | 30% | 90% | 10% | Tier 2 |
| Restaurants | 90% | 50% | 30% | 60% | 50% | 20% | 60% | 20% | Tier 2 |
| Sporting Goods | 100% | 10% | 20% | 40% | 30% | 20% | 80% | 0% | Tier 2 |
| Food & Beverages | 100% | 50% | 30% | 60% | 40% | 0% | 80% | 40% | Tier 2 |
| Manufacturing | 90% | 10% | 20% | 40% | 0% | 40% | 80% | 0% | Tier 2 |
| Medical Devices | 100% | 30% | 20% | 70% | 20% | 0% | 80% | 10% | Tier 2 |
| Recruitment & Staffing | 100% | 40% | 50% | 30% | 10% | 20% | 80% | 10% | Tier 2 |
| Reference | 80% | 60% | 30% | 50% | 30% | 10% | 50% | 30% | Tier 2 |
| Transport & Logistics | 80% | 50% | 10% | 20% | 0% | 20% | 90% | 0% | Tier 2 |
| Wholesalers | 80% | 20% | 40% | 40% | 10% | 40% | 60% | 0% | Tier 2 |
| Wine & Spirits | 100% | 60% | 40% | 40% | 50% | 10% | 70% | 20% | Tier 2 |
| Adult | 100% | 40% | 40% | 80% | 10% | 20% | 90% | 10% | Tier 2 |
| Advertising & Mktg | 100% | 30% | 50% | 50% | 0% | 30% | 90% | 10% | Tier 2 |
| Computers & Electronics | 90% | 10% | 30% | 30% | 0% | 20% | 70% | 0% | Tier 2 |
Adult, Advertising & Mktg, and Computers & Electronics tie at a mean browser tier of 1.80 — the lowest in Tanzania's bottom-group ranking. The 15 sectors in this group span a narrow range from 2.00 down to that floor.