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.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)	0.473671	422435	6.81	0.834076	422803	3.87	57%	graph
com.google.www  (https)	0.067288	80967	9.22	0.067039	80948	9.22	100%	graph
com.googleapis.fonts  (https)	0.045747	1621	0.27	0.041779	1621	0.30	110%	graph
com.gstatic.fonts  (https)	0.041109	1561	0.29	0.031001	1561	0.38	132%	graph
com.linkedin.www  (https)	0.236883	141608	4.58	0.253703	141608	4.27	93%	graph
com.x  (https)	0.236353	266111	8.60	0.004121	0	0	n/a	graph
com.youtube.www  (https)	0.195550	839936	32.86	0.578654	837665	11.06	34%	graph
gov.clinicaltrials  (https)	0.073363	94295	9.85	0.043223	94295	16.73	170%	graph
gov.hhs.www  (https)	0.095105	365	0.03	0.916892	363	0.00	10%	graph
gov.medlineplus  (https)	0.057189	26411	3.54	1.066426	26411	0.19	5%	graph
gov.medlineplus.magazine  (https)	1.905566	58229	0.23	0.008307	0	0	n/a	graph
gov.nih.nlm.ncbi.blast  (https)  [v4R] 1/0.071488s  [v6R] 1/0.028209s	0.283943	31822	0.86	0.234147	31822	1.04	121%	graph
gov.nih.nlm.ncbi.www  (https)	0.253619	39223	1.18	0.059719	39223	5.07	429%	graph
gov.nih.nlm.openi  (https)	0.094120	2632	0.21	0.031203	2632	0.65	303%	graph
gov.nih.nlm.uts  (https)	0.128574	4596	0.27	0.096351	4596	0.37	133%	graph
gov.nih.nlm.www  (https)	0.134860	33490	1.91	0.323312	33490	0.79	41%	graph
gov.nih.www  (https)	0.061093	62629	7.83	0.062681	62629	7.71	98%	graph
• gov.nlm.www  (https)  [v4R] 1/0.165314s  [v6R] 1/0.052695s	1.229182	33490	0.21	0.130504	33490	1.97	945%	graph
gov.usa.www  (https)	0.271120	47199	1.33	0.030822	47199	12.00	903%	graph
org.purl  [v4R] 2/0.413515s	1.420973	5368	0.03	0.022871	0	0	n/a	graph
IPv6 operational: 100% of linked subdomains (1/1), 85% of all linked domains (17/20)	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6

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