Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 2.22.122.148 |
| Server Software | istio-envoy |
| 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 2.22.122.148
Server Software istio-envoy
Compression gzip
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Performance
| DNS Lookup | 6.3 ms |
| TCP Connect | 7.5 ms |
| TLS Handshake | 7.5 ms |
| Time To First Byte (TTFB) | 187 ms |
| Content Download | 7.3 ms |
| Total Response Time | 194.3 ms |
DNS Lookup 6.3 ms
TCP Connect 7.5 ms
TLS Handshake 7.5 ms
Time To First Byte (TTFB) 187 ms
Content Download 7.3 ms
Total Response Time 194.3 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000 ; includeSubDomains ; preload |
| CSP | ✔ Configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31536000 ; includeSubDomains ; preload
CSP ✔ Configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Join the club & start saving! | Costco UK |
| Canonical | https://www.costco.co.uk/ |
| Robots Meta | index,follow |
| Open Graph Title | Join the club & start saving! | Costco UK |
Title Join the club & start saving! | Costco UK
Canonical https://www.costco.co.uk/
Robots Meta index,follow
Open Graph Title Join the club & start saving! | Costco UK
Detected Technologies
| Technology | Angular Google Analytics Google Tag Manager PHP Node.js |
Technology Angular Google Analytics Google Tag Manager PHP Node.js
HTTP Headers
| X-costco-cache
| true |
| Content-type
| text/html; charset=UTF-8 |
| X-envoy-upstream-service-time
| 26 |
| Server
| istio-envoy |
| Content-encoding
| gzip |
| Content-length
| 124093 |
| Cache-control
| max-age=1008 |
| Expires
| Tue, 28 Jul 2026 05:06:26 GMT |
| Date
| Tue, 28 Jul 2026 04:49:38 GMT |
| Vary
| Accept-Encoding |
| Content-security-policy
| frame-ancestors 'self' https://*.costco.co.uk |
| Akamai-grn
| 0.5756c817.1785214178.1c3884b |
| Strict-transport-security
| max-age=31536000 ; includeSubDomains ; preload |
Meta Tags
| Viewport | width=device-width, initial-scale=1 |
| Content-Type | text/xml; charset=utf-8 |
| X-UA-Compatible | IE=edge |
| Content-Security-Policy | upgrade-insecure-requests |
| Title | Join the club & start saving! | Costco UK |
| Robots | index,follow |
| Google-site-verification | DVMSQqS7kNfxZBRSZV10nGojYsjEzL5udlmxVhNyJ_4 |
| Naver-site-verification | 7dc1fd7e458bffc13b6e51787c629ab865c668e3 |
| Thumbnail |  |
X-costco-cache true
Content-type text/html; charset=UTF-8
X-envoy-upstream-service-time 26
Server istio-envoy
Content-encoding gzip
Content-length 124093
Cache-control max-age=1008
Expires Tue, 28 Jul 2026 05:06:26 GMT
Date Tue, 28 Jul 2026 04:49:38 GMT
Vary Accept-Encoding
Content-security-policy frame-ancestors 'self' https://*.costco.co.uk
Akamai-grn 0.5756c817.1785214178.1c3884b
Strict-transport-security max-age=31536000 ; includeSubDomains ; preload
