Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 75.2.60.5 |
| Server Software | Netlify |
| Compression | gzip |
|
🔒 🟡 Mixed Content (2 HTTP resources) | The page is served over HTTPS but loads 2 resource(s) over HTTP. This may be blocked in modern browsers. |
|
ℹ 🔵 Missing Content Security Policy | CSP is not configured. It helps prevent XSS attacks and content injection. |
|
ℹ 🔵 Missing X-Frame-Options | The site can be embedded in iframes by third parties (clickjacking risk). |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 75.2.60.5
Server Software Netlify
Compression gzip
🔒 🟡 Mixed Content (2 HTTP resources) The page is served over HTTPS but loads 2 resource(s) over HTTP. This may be blocked in modern browsers.
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://tefl.org:443 | 301 | HTTP/2 301 |
| 2 | https://www.tefl.org/ | 200 | HTTP/2 200 |
#1 URL https://tefl.org:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.tefl.org/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 4.1 ms |
| TCP Connect | 4.8 ms |
| TLS Handshake | 24.3 ms |
| Time To First Byte (TTFB) | 75.3 ms |
| Content Download | 34.3 ms |
| Total Response Time | 109.7 ms |
DNS Lookup 4.1 ms
TCP Connect 4.8 ms
TLS Handshake 24.3 ms
Time To First Byte (TTFB) 75.3 ms
Content Download 34.3 ms
Total Response Time 109.7 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000 |
| CSP | ⚠ Not configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31536000
CSP ⚠ Not configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | The TEFL Org | Accredited TEFL Certification | Jobs Worldwide |
| Meta Description | TEFL - Teaching English as a foreign language at home, online, abroad. Globally recognised TEFL Certificates from the most accredited TEFL course provider |
| Canonical | https://www.tefl.org/ |
| Robots Meta | index, follow |
| Open Graph Title | The TEFL Org | Accredited TEFL Certification | Jobs Worldwide |
| Open Graph Description | TEFL - Teaching English as a foreign language at home, online, abroad. Globally recognised TEFL Certificates from the most accredited TEFL course provider |
| Twitter Card | summary_large_image |
Title The TEFL Org | Accredited TEFL Certification | Jobs Worldwide
Meta Description TEFL - Teaching English as a foreign language at home, online, abroad. Globally recognised TEFL Certificates from the most accredited TEFL course provider
Canonical https://www.tefl.org/
Robots Meta index, follow
Open Graph Title The TEFL Org | Accredited TEFL Certification | Jobs Worldwide
Open Graph Description TEFL - Teaching English as a foreign language at home, online, abroad. Globally recognised TEFL Certificates from the most accredited TEFL course provider
Twitter Card summary_large_image
Detected Technologies
| Technology | WordPress Vue.js Google Analytics Nuxt.js |
Technology WordPress Vue.js Google Analytics Nuxt.js
HTTP Headers
| Accept-ranges
| bytes |
| Access-control-allow-origin
| * |
| Age
| 19988 |
| Cache-control
| public,max-age=0,must-revalidate |
| Cache-status
| "Netlify Edge"; hit |
| Content-encoding
| gzip |
| Content-type
| text/html; charset=UTF-8 |
| Date
| Tue, 21 Jul 2026 18:01:07 GMT |
| Etag
| W/"b30fb7aeca27909f8f0c27bfe6f0ac21-ssl-df" |
| Server
| Netlify |
| Set-cookie
| tefl_geolocation_timezone=Europe%2FParis |
| Strict-transport-security
| max-age=31536000 |
| Vary
| Accept-Encoding |
| X-nf-request-id
| 01KY2XDCJZ8TBYQMA8B2RPRP7E |
Meta Tags
| Viewport | width=device-width,initial-scale=1 |
| Msapplication-TileColor | #ffffff |
| Theme-color | #309db6 |
| Facebook-domain-verification | 0lpmiu3g903imomm4hejvvh2hptkvv |
| Description | TEFL - Teaching English as a foreign language at home, online, abroad. Globally recognised TEFL Certificates from the most accredited TEFL course provider |
| Article:publisher | https://www.facebook.com/teflorg |
| Article:modified_time | 2025-04-29T13:08:02+00:00 |
| Robots | index, follow |
Accept-ranges bytes
Access-control-allow-origin *
Age 19988
Cache-control public,max-age=0,must-revalidate
Cache-status "Netlify Edge"; hit
Content-encoding gzip
Content-type text/html; charset=UTF-8
Date Tue, 21 Jul 2026 18:01:07 GMT
Etag W/"b30fb7aeca27909f8f0c27bfe6f0ac21-ssl-df"
Server Netlify
Set-cookie tefl_geolocation_timezone=Europe%2FParis
Strict-transport-security max-age=31536000
Vary Accept-Encoding
X-nf-request-id 01KY2XDCJZ8TBYQMA8B2RPRP7E
