`jeffersonu.com`

DNSSEC	⚠️ Not signed
NS	`ns3.tju.edu` ⚠️ Not in zone NS records
		A	147.140.23.22^{🇺🇸 ASN-TJUH147.140.0.0/18}
			PTR	`ns3.tju.edu`
			PTR	`samplerecord.jeffhsx.org`
NS	`ns4.tju.edu` ⚠️ Not in zone NS records
		A	147.140.23.80^{🇺🇸 ASN-TJUH147.140.0.0/18}
			PTR	`ns4.jefferson.edu`
			PTR	`ns4.tju.edu`

`com`

	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=1774836287

jeffersonu.com

2 records (2 active, 0 former)

●NSns3.tju.edu2026-03-03 → 2026-03-30 · 2 obs

● 2026-03-03 23:10:12
● 2026-03-30 02:28:26

●NSns4.tju.edu2026-03-03 → 2026-03-30 · 2 obs

● 2026-03-03 23:10:12
● 2026-03-30 02:28:26

Zone	Nameservers	Glue
com	h.gtld-servers.net, a.gtld-servers.net, l.gtld-servers.net, j.gtld-servers.net...	-
jeffersonu.com	ns3.tju.edu, ns4.tju.edu	-

Server:147.140.23.22

NS records: ns3.tju.edu, ns4.tju.edu

⚠️ Insecure (no DNSSEC)

No DS record for jeffersonu.com (unsigned zone)

Total: 764ms | Queries: -

Type	Count	Sample Data

jeffersonu.com's delegation is to two name servers ns3.tju.edu and ns4.tju.edu.

jeffersonu.com shares the same name server setup as other domains, for example jeffersonmedicine.mobi, jeffersonhealthcare.mobi and thuh.org.

jeffersonu.com at least partially shares its name servers with other domains, for instance yourjeffersoncare.com, mail.jci.tju.edu, jeffersonhospital.org, jeffersonhospital.mobi and dbi.tju.edu.

These name servers are often used together with the name servers ns4.jefferson.edu.

Host names with a single IP: