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 2026.01.26 -

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] 1/0.132437s  [v6R] 1/0.147027s	0.318907	81851	1.96	0.276772	81987	2.27	115%	graph
com.github  (https)	0.035138	561159	122.32	0.003032	0	0	n/a	graph
com.google-analytics.www  (https)  [v4R] 2/0.056513s  [v6R] 2/0.090285s	0.088909	118475	10.27	0.118987	118475	7.66	75%	graph
com.google.www  (https)	0.077429	17684	1.75	0.062759	17522	2.16	123%	graph
com.linkedin.www  (https)	0.156075	141119	6.90	0.252081	141154	4.27	62%	graph
com.twitter  (https)  [v4R] 1/0.059351s	0.231593	233362	7.71	0.003027	0	0	n/a	graph
com.youtube.www  (https)	0.217111	667090	23.45	0.214452	665437	23.72	101%	graph
gov.hhs.www  (https)	0.026572	365	0.11	0.039653	365	0.07	67%	graph
gov.nih.nlm.ncbi.account  (https)	0.240447	4768556	151.59	1.566742	4768556	23.23	15%	graph
gov.nih.nlm.ncbi.cdn  (https)	0.049757	119140	18.55	0.042698	119140	21.64	117%	graph
gov.nih.nlm.ncbi.ncbiinsights  (https)	0.052017	150475	22.08	0.024215	0	0	n/a	graph
gov.nih.nlm.ncbi.pubmed  (https)	0.112192	42580	2.90	0.084212	42580	3.87	133%	graph
gov.nih.nlm.ncbi.www  (https)	0.032067	37806	9.01	0.035576	37806	8.24	91%	graph
gov.nih.nlm.support  (https)	0.326918	43623	1.02	0.042638	0	0	n/a	graph
gov.nih.nlm.www  (https)	0.062437	34757	4.28	0.077744	34757	3.44	81%	graph
gov.nih.www  (https)	0.098800	56910	4.43	0.249093	56910	1.74	39%	graph
• gov.pubmed.www  (https)  [v4R] 1/0.026007s  [v6R] 1/0.028343s	0.138244	42580	2.35	0.106585	42580	3.06	130%	graph
gov.usa.www  (https)	0.024399	46894	14.91	0.023069	46894	15.56	104%	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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