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 2025.12.20 -

gov.nlm. | 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] 1/0.110807s	0.172183	79812	3.54	0.267767	82211	2.35	66%	graph
com.fontawesome.use  (https)	0.086298	27150	2.41	0.095970	27150	2.18	91%	graph
com.google.www  (https)	0.066423	17758	2.05	0.062159	17854	2.20	107%	graph
com.googleapis.fonts  (https)	0.035237	1621	0.35	0.034963	1621	0.36	103%	graph
com.gstatic.fonts  (https)	0.026914	1561	0.46	0.023270	1561	0.52	113%	graph
com.linkedin.www  (https)	0.189143	140076	5.65	0.354503	138793	2.99	53%	graph
com.twitter  (https)  [v4R] 1/0.066127s	0.184143	228672	9.48	0.025597	0	0	n/a	graph
com.youtube.www  (https)	0.180125	687495	29.14	0.192731	694293	27.59	95%	graph
gov.clinicaltrials  (https)	0.041475	92364	17.19	0.039318	92364	18.07	105%	graph
gov.hhs.www  (https)	0.044111	365	0.06	0.043963	365	0.06	102%	graph
gov.medlineplus  (https)	0.022321	26454	9.17	0.021416	26454	9.61	105%	graph
gov.medlineplus.magazine  (https)	2.738232	58173	0.16	0.008498	0	0	n/a	graph
gov.nih.nlm.ncbi.blast  (https)  [v4R] 1/0.057727s  [v6R] 1/0.034668s	0.224485	31679	1.08	0.210594	31679	1.15	107%	graph
gov.nih.nlm.ncbi.www  (https)	0.031319	37806	9.30	0.032051	37806	9.01	97%	graph
gov.nih.nlm.openi  (https)	0.039594	1939	0.38	0.033782	1939	0.45	118%	graph
gov.nih.nlm.uts  (https)	0.088542	4596	0.40	0.067659	4596	0.52	131%	graph
gov.nih.nlm.www  (https)	0.106802	34757	2.50	0.087166	34757	3.05	122%	graph
gov.nih.www  (https)	0.101449	56539	4.27	0.111824	56539	3.89	91%	graph
• gov.nlm.www  (https)  [v4R] 1/0.135086s  [v6R] 1/0.035300s	0.199037	34757	1.33	0.112323	34757	2.37	178%	graph
gov.usa.www  (https)	0.029826	47100	12.39	0.027035	47100	13.31	107%	graph
org.purl  [v4R] 2/0.408970s	1.421572	5368	0.03	0.053597	0	0	n/a	graph
IPv6 operational: 100% of linked subdomains (1/1), 86% of all linked domains (18/21)	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6

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