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.selectagents. | Department of Health and Human Services	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6
com.responsibledisclosure.hhs  (https)  [v4R] 2/0.129091s	0.141093	6722	0.36	0.007386	0	0	n/a	graph
gov.cdc.www  (https)	0.035590	60815	13.26	0.041500	60815	11.32	85%	graph
gov.cdc.wwwn  (https)	0.068797	0	0	0.071822	0	0	n/a	graph
gov.hhs.oig  (https)	0.049286	40815	6.35	0.004121	0	0	n/a	graph
gov.hhs.www  (https)	0.027762	365	0.10	0.032428	365	0.09	84%	graph
gov.nih.od.osp  (https)	0.435815	56741	1.00	0.446140	56741	0.97	98%	graph
gov.oversight.usdaoig  (https)	0.442344	67868	1.17	0.401384	67868	1.29	110%	graph
gov.selectagents.efsap  (https)  [v4R] 4/0.467319s	0.751647	87229	0.89	0.008472	0	0	n/a	graph
• gov.selectagents.www  (https)	0.174598	70609	3.10	0.137022	70609	3.93	127%	graph
IPv6 operational: 50% of linked subdomains (1/2), 56% of all linked domains (5/9)	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6

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