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.cms. | 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)	0.694000	425033	4.67	0.696490	422946	4.64	99%	graph
com.linkedin.www  (https)	0.229250	141608	4.72	0.197321	141608	5.48	116%	graph
com.twitter  (https)  [v4R] 1/0.087791s	0.311127	266111	6.53	0.007375	0	0	n/a	graph
com.youtube.www  (https)	0.286452	818510	21.83	0.179523	818724	34.90	160%	graph
gov.cms.agentbrokerfaq.www  (https)  [v4R] 1/0.122142s	0.317549	110929	2.67	0.010464	0	0	n/a	graph
gov.cms.assisters  (https)	0.301044	56502	1.43	0.292795	56510	1.48	103%	graph
gov.cms.developer  (https)	0.102130	69262	5.18	0.385269	69262	1.37	26%	graph
• gov.cms.www  (https)	0.101869	234372	17.70	0.102692	234372	17.53	99%	graph
gov.healthcare.data  (https)	0.202576	18521	0.70	0.250067	18531	0.57	81%	graph
gov.healthcare.localhelp  (https)  [v4R] 1/0.137911s  [v6R] 1/0.158852s	0.255159	2325	0.07	0.279940	2325	0.06	91%	graph
gov.healthcare.www  (https)	0.082337	423699	39.42	0.093456	423699	34.76	88%	graph
gov.hhs.oig.www  (https)	0.274213	49852	1.39	0.003030	0	0	n/a	graph
gov.hhs.www	0.028243	365	0.10	1.058657	365	0.00	3%	graph
gov.hhs.www  (https)	0.031570	365	0.09	0.034722	365	0.08	91%	graph
gov.insurekidsnow.www  (https)	0.100859	49428	3.77	0.098691	49440	3.85	102%	graph
gov.medicaid.www  [v4R] 1/0.032118s  [v6R] 1/0.037118s	0.150482	151311	7.70	0.097987	151311	11.90	155%	graph
gov.medicaid.www  (https)	0.068647	151311	16.98	0.114658	151311	10.13	60%	graph
gov.medicare.www  (https)	0.076619	99018	9.94	0.077525	98910	9.80	99%	graph
gov.usa.www  (https)	0.021320	47199	17.15	0.271397	47199	1.33	8%	graph
IPv6 operational: 75% of linked subdomains (3/4), 84% of all linked domains (16/19)	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6

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