Network domain count and the Core Web Vitals
How many distinct third-party domains the page contacts.
26.0% of sites use 1 to 3 domains distinct network domain count, and 73% of those sites pass all three Core Web Vitals, against 68% of all sites.
26.0% of sites use 1 to 3 domains distinct network domain count, and 89% of those sites have a good LCP, against 86% of all sites.
29.6% of sites use 4 to 7 domains distinct network domain count, and 99% of those sites have a good INP, against 99% of all sites.
26.0% of sites use 1 to 3 domains distinct network domain count, and 82% of those sites have a good CLS, against 78% of all sites.
Core Web Vitals pass rate
Sites with 1 to 3 domains distinct network domain count pass all three Core Web Vitals most often: 73%, against 68% of all sites. The biggest gap is CLS, 82% against 78%.
Sites with 1 to 3 domains distinct network domain count have a good LCP most often: 89%, against 86% of all sites. Sites with 15+ domains domain count have it least often, at 84%.
Sites with 4 to 7 domains distinct network domain count have a good INP most often: 99%, against 99% of all sites. Sites with 15+ domains domain count have it least often, at 98%.
Sites with 1 to 3 domains distinct network domain count have a good CLS most often: 82%, against 78% of all sites. Sites with 15+ domains domain count have it least often, at 75%.
Distinct network domain count usage
8 to 14 domains is the most used: 30.8% of sites. 1 to 3 domains is 26.0% of sites.
How distinct network domain count plays out per platform
What the field data shows when you isolate a single CMS or framework.
WordPress 65,509 sites WordPress sites connecting to 15+ domains (10.5%) pass all three CWV at 53% vs 70% at 1 to 3 domains (17 points apart).
Across 65,509 WordPress sites, 22.0% connect to 1 to 3 domains (70% passing all three CWV), 35.3% use 4 to 7 domains (63%), 32.2% use 8 to 14 domains (60%), and 10.5% connect to 15+ domains (53%).
Shopify 8,573 stores 64.0% of Shopify stores connect to 15+ domains (80% CWV pass rate vs 96% at 4 to 7 domains).
Across Shopify storefronts, 9.7% connect to 4 to 7 domains (96% passing all three CWV), 26.3% connect to 8 to 14 domains (90%), and 64.0% connect to 15+ domains (80%).
React & Next.js 9,570 sites React & Next.js sites connecting to 15+ domains (16.5%) pass all three CWV at 57% vs 70% at 8 to 14 domains.
Across 9,570 React sites, 61.1% connect to 8 to 14 domains (70% passing all three CWV) and 16.5% connect to 15 or more domains (57%, 13 percentage points apart).
By Arjen Karel · 210,902 crawled sites (69,745 with desktop Chrome field data, 206,258 sites with distinct network domain count, October 2026). How we measured.