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 2025.12.21 -

gov.floodsmart. | Department of Homeland Security	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6
com.facebook.www  (https)	0.185636	80005	3.30	0.164215	80166	3.73	113%	graph
com.googletagmanager.www  (https)	0.029541	1561	0.41	0.030537	1561	0.40	97%	graph
com.govdelivery.public  (https)  [v4R] 1/0.044958s  [v6R] 1/0.054537s	0.072418	7656	0.81	0.081886	7656	0.72	89%	graph
com.instagram.www  (https)	0.358371	808130	17.22	0.340759	821770	18.44	107%	graph
com.linkedin.www  (https)	0.422515	140071	2.53	0.179671	140071	5.97	236%	graph
com.unpkg  (https)	0.051801	23212	3.47	0.046043	23212	3.85	111%	graph
com.x  (https)	0.128097	228762	13.64	0.004101	0	0	n/a	graph
com.youtube.www  (https)	0.184203	697249	28.91	0.207360	691632	25.49	88%	graph
gov.dhs  (https)  [v4R] 1/0.038134s  [v6R] 1/0.035608s	0.115933	107056	7.10	0.101598	107079	8.09	114%	graph
gov.disasterassistance  (https)  [v4R] 1/0.030029s  [v6R] 1/0.038784s	0.067873	112818	12.85	0.101479	112818	8.52	66%	graph
gov.fema  (https)  [v4R] 1/0.044653s  [v6R] 1/0.073283s	0.098588	119327	9.29	0.107601	119327	8.51	92%	graph
gov.fema.msc  (https)  [v4R] 1/0.066407s	0.166401	36662	1.68	0.006285	0	0	n/a	graph
gov.fema.www  (https)	0.031211	119327	29.37	0.037849	119327	24.61	84%	graph
gov.floodsmart  (https)  [v4R] 1/0.082068s  [v6R] 1/0.104901s	0.360579	94836	2.01	0.658941	94836	1.10	55%	graph
gov.floodsmart.agents  (https)	0.145851	62975	3.31	0.313065	62975	1.54	46%	graph
• gov.floodsmart.www  (https)	0.117730	94836	6.18	0.148652	94836	4.89	79%	graph
gov.ready  (https)  [v4R] 1/0.065269s  [v6R] 1/0.076828s	0.099755	51929	4.00	0.129174	51929	3.07	77%	graph
gov.usa  (https)  [v4R] 1/0.044988s  [v6R] 1/0.049619s	0.069945	47100	5.21	0.075960	47100	4.79	92%	graph
IPv6 operational: 100% of linked subdomains (3/3), 89% of all linked domains (16/18)	v4[s]	v4[B]	v4[Mbps]	v6[s]	v6[B]	v6[Mbps]	6/4[Mbps]	v4|v6

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