uber.com to cfe.uber.com: No delegation NS records were detected in the parent zone (uber.com). This results in an NXDOMAIN response to a DS query (for DNSSEC), even if the parent servers are authoritative for the child. See RFC 1034, Sec. 4.2.2. (198.51.44.4, 198.51.44.68, 198.51.45.4, 198.51.45.68, 204.74.66.126, 204.74.67.126, 204.74.110.126, 204.74.111.126, 2001:502:4612::27e, 2001:502:f3ff::27e, 2610:a1:1014::27e, 2610:a1:1015::27e, 2620:4d:4000:6259:7:4:0:1, 2620:4d:4000:6259:7:4:0:3, 2a00:edc0:6259:7:4::2, 2a00:edc0:6259:7:4::4, UDP_-_EDNS0_4096_D_KN)