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.pbgc. | Pension Benefit Guaranty Corporation	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6
com.facebook.www  (https)	1.628387	425185	1.99	0.662571	425500	4.90	246%	graph
com.googletagmanager.www  (https)	0.069833	1561	0.17	0.098831	1561	0.12	70%	graph
com.govdelivery.service  (https)  [v4R] 1/0.076667s  [v6R] 1/0.076012s	0.112298	7681	0.52	0.106797	7681	0.55	106%	graph
com.linkedin.www  (https)	0.174657	140329	6.15	1.937425	141608	0.56	9%	graph
com.twitter  (https)  [v4R] 1/0.286467s	0.487943	266111	4.17	0.006290	0	0	n/a	graph
gov.pbgc.oig  (https)	0.452965	38119	0.64	0.413819	38119	0.70	109%	graph
• gov.pbgc.www  (https)	0.106383	71445	5.14	0.006318	0	0	n/a	graph
gov.usa.www  (https)	0.045901	47199	8.00	1.323142	47199	0.27	3%	graph
IPv6 operational: 50% of linked subdomains (1/2), 75% of all linked domains (6/8)	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6

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