Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 76.76.21.21 |
| Server Software | Vercel |
| CDN | Vercel |
| Compression | gzip |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 76.76.21.21
Server Software Vercel
CDN Vercel
Compression gzip
Performance
| DNS Lookup | 13.5 ms |
| TCP Connect | 15.5 ms |
| TLS Handshake | 6.4 ms |
| Time To First Byte (TTFB) | 211 ms |
| Content Download | 36.6 ms |
| Total Response Time | 247.5 ms |
DNS Lookup 13.5 ms
TCP Connect 15.5 ms
TLS Handshake 6.4 ms
Time To First Byte (TTFB) 211 ms
Content Download 36.6 ms
Total Response Time 247.5 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=63072000 |
| CSP | ✔ Configured |
| X-Frame-Options | ✔ DENY |
| X-Content-Type-Options | ✔ nosniff |
| Referrer Policy | strict-origin-when-cross-origin |
| Permissions Policy | ✔ Configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=63072000
CSP ✔ Configured
X-Frame-Options ✔ DENY
X-Content-Type-Options ✔ nosniff
Referrer Policy strict-origin-when-cross-origin
Permissions Policy ✔ Configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | American College of Rheumatology |
| Meta Description | Learn about the American College of Rheumatology, a non-profit, professional association committed to advancing the specialty of rheumatology. The ACR serves nearly 9,100 physicians, health professionals, and scientists worldwide who work in the medical subspecialty of rheumatology. |
| Canonical | https://www.rheumatology.org |
Title American College of Rheumatology
Meta Description Learn about the American College of Rheumatology, a non-profit, professional association committed to advancing the specialty of rheumatology. The ACR serves nearly 9,100 physicians, health professionals, and scientists worldwide who work in the medical subspecialty of rheumatology.
Canonical https://www.rheumatology.org
Detected Technologies
| Technology | React Google Analytics Google Tag Manager Next.js |
Technology React Google Analytics Google Tag Manager Next.js
HTTP Headers
| Access-control-allow-headers
| Content-Type, Authorization |
| Access-control-allow-methods
| GET, POST, PUT, DELETE, OPTIONS |
| Access-control-allow-origin
| * |
| Access-control-max-age
| 86400 |
| Age
| 0 |
| Cache-control
| private, no-cache, no-store, max-age=0, must-revalidate |
| Content-encoding
| gzip |
| Content-security-policy
| object-src 'none'; frame-ancestors 'none'; upgrade-insecure-requests; |
| Content-type
| text/html; charset=utf-8 |
| Cross-origin-resource-policy
| cross-origin |
| Date
| Sat, 25 Jul 2026 01:02:56 GMT |
| Link
| ; rel=preload; as="style", ; rel=preload; as="style", ; rel=preload; as="style" |
| Permissions-policy
| geolocation=(), microphone=(), camera=(), browsing-topics=() |
| Referrer-policy
| strict-origin-when-cross-origin |
| Server
| Vercel |
| Strict-transport-security
| max-age=63072000 |
| Vary
| RSC, Next-Router-State-Tree, Next-Router-Prefetch, Next-Router-Segment-Prefetch |
| X-content-type-options
| nosniff |
| X-frame-options
| DENY |
| X-matched-path
| / |
| X-powered-by
| Next.js |
| X-vercel-cache
| MISS |
| X-vercel-id
| cdg1::iad1::lclds-1784941376536-8adcda0a7eb5 |
Meta Tags
| Viewport | width=device-width, initial-scale=1 |
| Description | Learn about the American College of Rheumatology, a non-profit, professional association committed to advancing the specialty of rheumatology. The ACR serves nearly 9,100 physicians, health professionals, and scientists worldwide who work in the medical subspecialty of rheumatology. |
| Format-detection | telephone=no |
| Google-site-verification | pgoqvj6aXVphKIxJ43aXsALACXQxaqJ38PiPeDP0ezk |
| Msvalidate.01 | 14A9402AA33654DB9FA450A2FC67AEAE |
Access-control-allow-headers Content-Type, Authorization
Access-control-allow-methods GET, POST, PUT, DELETE, OPTIONS
Access-control-allow-origin *
Access-control-max-age 86400
Age 0
Cache-control private, no-cache, no-store, max-age=0, must-revalidate
Content-encoding gzip
Content-security-policy object-src 'none'; frame-ancestors 'none'; upgrade-insecure-requests;
Content-type text/html; charset=utf-8
Cross-origin-resource-policy cross-origin
Date Sat, 25 Jul 2026 01:02:56 GMT
Link ; rel=preload; as="style", ; rel=preload; as="style", ; rel=preload; as="style"
Permissions-policy geolocation=(), microphone=(), camera=(), browsing-topics=()
Referrer-policy strict-origin-when-cross-origin
Server Vercel
Strict-transport-security max-age=63072000
Vary RSC, Next-Router-State-Tree, Next-Router-Prefetch, Next-Router-Segment-Prefetch
X-content-type-options nosniff
X-frame-options DENY
X-matched-path /
X-powered-by Next.js
X-vercel-cache MISS
X-vercel-id cdg1::iad1::lclds-1784941376536-8adcda0a7eb5
