Referenced Domain IPv4/IPv6 Web Statistics

Background and Methodology	IPv6 & DNSSEC SnapShots
USG IPv6 & DNSSEC Statistics	USG IPv4 Statistics
Industry IPv6 & DNSSEC Statistics	Industry IPv4 Statistics
University IPv6 & DNSSEC Statistics	University IPv4 Statistics
CFO Act Agency Summary Statistics	USG IPv6 Enabled WWW Sites

- Referenced Domain Web Statistics for 2026.02.21 -

gov.healthit. | Department of Health and Human Services	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6
com.googleapis.fonts  (https)	0.033719	1621	0.37	0.038473	1621	0.33	87%	graph
com.linkedin.www  (https)	0.273872	141194	3.95	0.145510	141194	7.43	188%	graph
com.x  (https)	0.141646	237018	12.82	0.003050	0	0	n/a	graph
com.youtube.www  [v4R] 1/0.027508s  [v6R] 1/0.055503s	0.204580	683995	25.58	0.234099	686116	22.37	87%	graph
gov.healthdata  (https)	0.321668	840777	19.98	0.003030	0	0	n/a	graph
gov.healthit  (https)	1.260317	413416	2.50	0.053641	0	0	n/a	graph
gov.healthit.chpl  (https)	0.030424	15133	3.85	0.056957	0	0	n/a	graph
gov.healthit.ecqi  (https)	0.081377	87441	8.24	0.035492	87441	19.06	231%	graph
gov.healthit.inquiry  (https)  [v4R] 3/0.178575s	0.225387	75655	2.57	0.003028	0	0	n/a	graph
gov.healthit.isp  (https)	0.026562	118	0.03	0.004105	0	0	n/a	graph
gov.healthit.site  (https)	0.179456	124550	5.31	0.003031	0	0	n/a	graph
• gov.healthit.www  (https)  [v4R] 1/0.312301s	0.348437	413416	9.06	0.059631	0	0	n/a	graph
gov.hhs  (https)  [v4R] 1/0.017072s	0.048132	365	0.06	0.006458	0	0	n/a	graph
gov.hhs.www	0.011253	365	0.25	0.016607	365	0.17	69%	graph
gov.hhs.www  (https)	0.026085	365	0.11	0.028137	365	0.10	93%	graph
gov.usa.gobierno  (https)  [v4R] 1/0.210345s  [v6R] 1/0.210039s	0.581285	48531	0.64	0.245940	48531	1.51	237%	graph
IPv6 operational: 14% of linked subdomains (1/7), 44% of all linked domains (7/16)	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6

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