`cengage-learning.net`

DNSSEC	⚠️ Not signed
NS	`dns3.gale.com` ⚠️ Not in zone NS records
		A	140.244.174.202^{🇺🇸 Amazon140.244.0.0/16}
NS	`dns4.gale.com` ⚠️ Not in zone NS records
		A	140.244.174.203^{🇺🇸 Amazon140.244.0.0/16}
NS	`ns3.ohcinmason.com` ⚠️ Not in zone NS records
		A	69.32.144.8
			PTR	`ns3.ohcinmason.com`
			PTR	`tlauns3.ohcinmason.com`
			PTR	`www.ohcinmason.com`
NS	`ns4.ohcinmason.com` ⚠️ Not in zone NS records
		A	69.32.144.21
			PTR	`ns4.ohcinmason.com`
			PTR	`test2.ohcinmason.com`
			PTR	`tlauns4.ohcinmason.com`
NS	`ns5.ohcinmason.com` ⚠️ Not in zone NS records
		A	69.32.144.22
			PTR	`ns5.ohcinmason.com`
			PTR	`test1.ohcinmason.com`
			PTR	`tlauns5.ohcinmason.com`

`net`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1774417987