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 2025.09.19 -

gov.pubmed. | 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)  [v4R] 1/0.140252s  [v6R] 1/0.100218s	0.325025	74007	1.74	0.230919	76353	2.53	146%	graph
com.github  (https)	0.029462	560797	147.54	0.003380	0	0	n/a	graph
com.google-analytics.www  (https)  [v4R] 2/0.049316s  [v6R] 2/0.058868s	0.077924	118475	11.74	0.093763	118475	9.72	83%	graph
com.google.www  (https)	0.053748	16959	2.44	0.059260	16945	2.19	90%	graph
com.linkedin.www  (https)	0.167905	138898	6.35	0.297121	138971	3.57	56%	graph
com.twitter  (https)  [v4R] 1/0.072081s	0.195814	220013	8.61	0.003404	0	0	n/a	graph
com.youtube.www  (https)	0.181597	662311	27.92	0.232163	657925	21.64	78%	graph
gov.hhs.www  (https)	0.096561	365	0.03	0.033560	365	0.08	291%	graph
gov.nih.nlm.ncbi.account  (https)	0.313719	4772463	116.33	0.657126	4772463	55.42	48%	graph
gov.nih.nlm.ncbi.cdn  (https)	0.065467	119140	13.98	0.031391	119140	29.32	210%	graph
gov.nih.nlm.ncbi.ncbiinsights  (https)	0.029475	130815	34.42	0.009012	0	0	n/a	graph
gov.nih.nlm.ncbi.pubmed  (https)	0.070205	42654	4.65	0.086657	42654	3.78	81%	graph
gov.nih.nlm.ncbi.www  (https)	0.031313	37806	9.30	0.037034	37806	7.80	84%	graph
gov.nih.nlm.support  (https)	0.183119	43001	1.79	0.001249	0	0	n/a	graph
gov.nih.nlm.www  (https)	0.056859	34773	4.74	0.075503	34773	3.54	75%	graph
gov.nih.www  (https)	0.091352	57119	4.79	0.063906	57119	6.92	144%	graph
• gov.pubmed.www  (https)  [v4R] 1/0.023789s  [v6R] 1/0.028980s	0.104707	42654	3.13	0.131983	42654	2.48	79%	graph
gov.usa.www  (https)	0.021019	48043	17.45	0.020921	48043	18.33	105%	graph
IPv6 operational: 100% of linked subdomains (1/1), 78% of all linked domains (14/18)	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6

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