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 2026.07.21 -

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)	0.369747	426020	8.81	0.460308	425021	7.05	80%	graph
com.flickr.www  (https)	0.062464	57606	7.09	0.085997	57606	5.17	73%	graph
com.googletagmanager.www  (https)	0.271943	1561	0.04	0.073671	1561	0.16	371%	graph
com.instagram.www  (https)	0.527207	396110	5.73	0.526850	396101	5.75	100%	graph
com.twitter  (https)  [v4R] 1/0.074469s	0.532935	266111	3.82	0.002480	0	0	n/a	graph
com.youtube.www  (https)	0.274171	835374	23.26	0.291247	833586	21.85	94%	graph
gov.hhs.oig  (https)	0.243460	49840	1.56	0.003031	0	0	n/a	graph
gov.hhs.www  (https)	0.108257	365	0.03	0.095127	363	0.03	113%	graph
gov.medlineplus  (https)	0.339561	26411	0.59	0.054641	26411	3.73	628%	graph
gov.nih.calendar  (https)	0.138451	10093	0.56	0.176719	10093	0.44	78%	graph
gov.nih.education.science  (https)	0.149898	189180	9.69	0.022882	0	0	n/a	graph
gov.nih.eeo  (https)	0.063226	29689	3.60	0.265542	29689	0.85	24%	graph
gov.nih.grants  (https)	0.107488	79978	5.70	0.083384	79978	7.35	129%	graph
gov.nih.hr  (https)	0.070787	31588	3.44	0.091058	31588	2.65	77%	graph
gov.nih.irp  (https)	0.610491	73792	0.92	1.204815	73792	0.47	51%	graph
gov.nih.jobs.www  (https)  [v4R] 2/0.382582s  [v6R] 2/1.112625s	0.400011	34123	0.65	1.144674	34123	0.23	35%	graph
gov.nih.newsinhealth  (https)	1.081025	31416	0.22	0.062727	31416	3.87	1744%	graph
gov.nih.niaaa.www  (https)	0.382652	57893	1.16	0.253580	57893	1.75	151%	graph
gov.nih.nlm.ncbi.www  (https)	0.511652	39223	0.59	0.086225	39223	3.48	594%	graph
gov.nih.salud  (https)	0.097621	72798	5.73	0.117023	72798	4.75	83%	graph
• gov.nih.www  (https)	0.079556	62629	6.05	0.066587	62629	7.24	120%	graph
gov.usa.www  (https)	0.026518	47199	13.85	0.045513	47199	8.00	58%	graph
org.recovercovid  (https)	0.076686	150328	15.09	0.040368	0	0	n/a	graph
IPv6 operational: 92% of linked subdomains (11/12), 83% of all linked domains (19/23)	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6

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