Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 172.67.73.133 |
| Server Software | cloudflare |
| CDN | Cloudflare |
| Compression | gzip |
|
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 172.67.73.133
Server Software cloudflare
CDN Cloudflare
Compression gzip
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Performance
| DNS Lookup | 5.2 ms |
| TCP Connect | 6.5 ms |
| TLS Handshake | 12.7 ms |
| Time To First Byte (TTFB) | 498.6 ms |
| Content Download | 0.2 ms |
| Total Response Time | 498.7 ms |
DNS Lookup 5.2 ms
TCP Connect 6.5 ms
TLS Handshake 12.7 ms
Time To First Byte (TTFB) 498.6 ms
Content Download 0.2 ms
Total Response Time 498.7 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000 |
| CSP | ✔ Configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31536000
CSP ✔ Configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Buy eSIM for International Travel | Instant Activation & Global Coverage – 4S eSIM |
| Meta Description | Buy international travel eSIMs with instant activation and fast 4G/5G data in 200+ countries. No roaming fees, no shipping — connect online the moment you land. |
Title Buy eSIM for International Travel | Instant Activation & Global Coverage – 4S eSIM
Meta Description Buy international travel eSIMs with instant activation and fast 4G/5G data in 200+ countries. No roaming fees, no shipping — connect online the moment you land.
Detected Technologies
| Technology | Google Analytics Google Tag Manager Cloudflare |
Technology Google Analytics Google Tag Manager Cloudflare
HTTP Headers
| Date
| Thu, 20 Aug 2026 08:54:43 GMT |
| Content-type
| text/html |
| Server
| cloudflare |
| Last-modified
| Thu, 13 Aug 2026 15:31:13 GMT |
| Nel
| {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800} |
| Vary
| Accept-Encoding |
| Server-timing
| cfEdge;dur=16,cfOrigin;dur=458 |
| Strict-transport-security
| max-age=31536000 |
| Content-security-policy
| default-src * 'unsafe-inline' 'unsafe-eval' data: blob:; connect-src *; manifest-src *; |
| Report-to
| {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=BhzlDJKCXms%2FruTymA0ksaoQ1XIXZIBDxq9B534PmORBurTvy%2FWL%2BoMpugkyogIPCdYHHnKplEfxic4LNnYE5btfm5fN3LphC7mKryPznmZTZRkn%2FmM%2FvBut6R9E39fwZIGGeA%3D%3D"}]} |
| Cf-cache-status
| DYNAMIC |
| Speculation-rules
| "/cdn-cgi/speculation" |
| Content-encoding
| gzip |
| Cf-ray
| a2e02cc86ac522a6-CDG |
| Alt-svc
| h3=":443"; ma=86400 |
Meta Tags
| Viewport | width=device-width, initial-scale=1.0 |
| Description | Buy international travel eSIMs with instant activation and fast 4G/5G data in 200+ countries. No roaming fees, no shipping — connect online the moment you land. |
| Baidu-site-verification | codeva-EocjOpXM9l |
| Apple-mobile-web-app-capable | yes |
| Apple-mobile-web-app-status-bar-style | black-translucent |
| Apple-mobile-web-app-title | 4S eSIM |
| Keywords | travel eSIM, international eSIM, global eSIM, eSIM data plan, 4S eSIM, roaming alternative, prepaid eSIM |
| Appleid-signin-client-id | com.4s.net.esim.web |
| Appleid-signin-scope | name email |
| Appleid-signin-redirect-uri | https://4s.net |
| Appleid-signin-state | origin:web |
| Appleid-signin-use-popup | true |
Date Thu, 20 Aug 2026 08:54:43 GMT
Content-type text/html
Server cloudflare
Last-modified Thu, 13 Aug 2026 15:31:13 GMT
Nel {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Vary Accept-Encoding
Server-timing cfEdge;dur=16,cfOrigin;dur=458
Strict-transport-security max-age=31536000
Content-security-policy default-src * 'unsafe-inline' 'unsafe-eval' data: blob:; connect-src *; manifest-src *;
Report-to {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=BhzlDJKCXms%2FruTymA0ksaoQ1XIXZIBDxq9B534PmORBurTvy%2FWL%2BoMpugkyogIPCdYHHnKplEfxic4LNnYE5btfm5fN3LphC7mKryPznmZTZRkn%2FmM%2FvBut6R9E39fwZIGGeA%3D%3D"}]}
Cf-cache-status DYNAMIC
Speculation-rules "/cdn-cgi/speculation"
Content-encoding gzip
Cf-ray a2e02cc86ac522a6-CDG
Alt-svc h3=":443"; ma=86400
