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.nih. | Department of Health and Human Services	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6
com.facebook.www  (https)  [v6R] 1/0.091648s	0.338174	452573	10.22	0.384675	452178	8.98	88%	graph
com.flickr.www  (https)	0.044573	44780	7.76	0.042172	44780	8.13	105%	graph
com.googletagmanager.www  (https)	0.030185	1561	0.40	0.027213	1561	0.44	111%	graph
com.instagram.www  (https)	0.387143	591639	11.66	0.431120	591722	10.47	90%	graph
com.twitter  (https)  [v4R] 1/0.053746s	0.180099	237018	10.05	0.003032	0	0	n/a	graph
com.youtube.www  (https)	0.190698	685697	27.53	0.185227	686196	28.30	103%	graph
gov.hhs.oig  (https)	0.137809	40815	2.27	0.003031	0	0	n/a	graph
gov.hhs.www	0.011496	365	0.25	0.015580	365	0.19	73%	graph
gov.hhs.www  (https)	0.029005	365	0.10	0.040178	365	0.07	73%	graph
gov.medlineplus  (https)	0.019794	26445	10.62	0.028119	26445	7.21	68%	graph
gov.nih.calendar  (https)	0.103720	10093	0.75	0.060691	10093	1.28	172%	graph
gov.nih.education.science  (https)	0.078276	192358	18.82	0.023208	0	0	n/a	graph
gov.nih.eeo  (https)	0.183084	5461	0.23	0.121830	5486	0.35	152%	graph
gov.nih.grants  (https)	0.052495	71681	10.52	0.049301	71681	11.16	106%	graph
gov.nih.heal  (https)  [v4R] 1/0.093191s	0.156163	52118	2.55	0.018130	0	0	n/a	graph
gov.nih.hr  (https)	0.298894	31254	0.80	0.098490	31254	2.43	304%	graph
gov.nih.irp  (https)	0.206208	73478	2.72	0.145907	73478	3.87	142%	graph
gov.nih.jobs.www  (https)	0.054687	5461	0.77	0.060383	5486	0.70	90%	graph
gov.nih.lrp.www  (https)  [v4R] 1/0.222713s  [v6R] 1/0.175904s	0.299214	97292	2.48	0.246262	97292	3.02	122%	graph
gov.nih.ncats  (https)	0.190818	50317	2.02	0.023096	0	0	n/a	graph
gov.nih.nei.www  (https)	0.119709	57710	3.70	0.093110	57710	4.73	128%	graph
gov.nih.newsinhealth  (https)	0.137058	29014	1.62	0.059811	29014	3.75	232%	graph
gov.nih.od.nexus  (https)  [v4R] 1/0.078360s  [v6R] 1/0.089015s	0.165882	130002	6.01	0.155255	130002	6.40	106%	graph
gov.nih.salud  (https)	0.278070	70092	1.92	0.130517	70092	4.11	214%	graph
gov.nih.www  [v4R] 1/0.039755s  [v6R] 1/0.038932s	0.129042	56936	3.37	0.165818	56936	2.63	78%	graph
• gov.nih.www  (https)	0.061890	56936	7.12	0.071701	56936	6.12	86%	graph
gov.usa.www  (https)	0.027213	47580	13.44	0.027684	47580	13.44	100%	graph
org.recovercovid  (https)	0.094817	150550	12.22	0.030094	0	0	n/a	graph
IPv6 operational: 81% of linked subdomains (13/16), 79% of all linked domains (22/28)	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6

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