US-CBP
AS396921 (US-CBP) announces at least 14 prefixes:
167.144.1.0/24
U.S. Customs and Border Protection
1970-01-01
NET-167-144-0-0-1
167.144.0.0-167.144.255.255
167.144.2.0/24
167.144.11.0/24
167.144.12.0/24
167.144.25.0/24
167.144.26.0/24
167.144.64.0/24
167.144.65.0/24
167.144.66.0/24
167.144.68.0/24
167.144.69.0/24
167.144.130.0/24
2602:80b:e000::/44
NET6-2602-80B-E000-1
2602:80b:e000::-2602:80b:e00f:ffff:ffff:ffff:ffff:ffff
2602:80b:e001::/48
0