`comcastcablenbcu.us`

DNSSEC	⚠️ Not signed
NS	`ns1.nbcuni.com` ⭐
		A	2001:502:f3ff::31^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`ns1.nbcuni.com`
		A	156.154.64.31^{🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar}
			PTR	`ns1.nbcuni.com`
NS	`ns2.nbcuni.com`
		A	2610:a1:1014::31^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`ns2.nbcuni.com`
		A	156.154.65.31^{🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar}
			PTR	`ns2.nbcuni.com`
NS	`ns3.nbcuni.com`
		A	2610:a1:1015::31^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`ns3.nbcuni.com`
		A	156.154.66.31^{🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar}
			PTR	`ns3.nbcuni.com`
NS	`ns4.nbcuni.com`
		A	2001:502:4612::31^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`ns4.nbcuni.com`
		A	156.154.67.31^{🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar}
			PTR	`ns4.nbcuni.com`
NS	`ns5.nbcuni.com`
		A	2610:a1:1016::31^{🇺🇸 MAINT-ID-120082610:a1:1016::/48 Neustar}
			PTR	`ns5.nbcuni.com`
		A	156.154.68.31^{🇺🇸 MAINT-ID-12008156.154.68.0/24 Neustar}
			PTR	`ns5.nbcuni.com`
NS	`ns6.nbcuni.com`
		A	2610:a1:1017::31^{🇺🇸 MAINT-ID-120082610:a1:1017::/48 Neustar}
			PTR	`ns6.nbcuni.com`
		A	156.154.69.31^{🇺🇸 MAINT-ID-12008156.154.69.0/24 Neustar}
			PTR	`ns6.nbcuni.com`
TXT	`v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all`
SOA	`ns1.nbcuni.com`domain\@admin.nbcuni.com 2024-09-12 #4

`us`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.cctld.us` ⭐
	NS	`b.cctld.us`
	NS	`f.cctld.us`
	NS	`k.cctld.us`
	NS	`m.cctld.us`
	NS	`n.cctld.us`
	NS	`w.cctld.us`
	NS	`x.cctld.us`
	NS	`y.cctld.us`
	SOA	`a.cctld.us`admin@tldns.godaddy serial=1776024003

Same first word

comcastcablenbcu.us

DNS History

6 records (6 active, 0 former)

●NSns1.nbcuni.com2026-04-09 → 2026-04-12 · 2 obs

● 2026-04-09 01:49:04
● 2026-04-12 20:16:10

●NSns2.nbcuni.com2026-04-09 → 2026-04-12 · 2 obs

● 2026-04-09 01:49:04
● 2026-04-12 20:16:10

●NSns3.nbcuni.com2026-04-09 → 2026-04-12 · 2 obs

● 2026-04-09 01:49:04
● 2026-04-12 20:16:10

●NSns4.nbcuni.com2026-04-09 → 2026-04-12 · 2 obs

● 2026-04-09 01:49:04
● 2026-04-12 20:16:10

●NSns5.nbcuni.com2026-04-09 → 2026-04-12 · 2 obs

● 2026-04-09 01:49:04
● 2026-04-12 20:16:10

●NSns6.nbcuni.com2026-04-09 → 2026-04-12 · 2 obs

● 2026-04-09 01:49:04
● 2026-04-12 20:16:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
us	y.cctld.us, b.cctld.us, w.cctld.us, n.cctld.us...	-
comcastcablenbcu.us	ns3.nbcuni.com, ns2.nbcuni.com, ns1.nbcuni.com, ns6.nbcuni.com...	-

✅ Authoritative Response

Server:156.154.68.31

NS records: ns3.nbcuni.com, ns2.nbcuni.com, ns1.nbcuni.com, ns6.nbcuni.com, ns5.nbcuni.com, ns4.nbcuni.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for comcastcablenbcu.us (unsigned zone)

⏱️ Timing

Total: 353ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	6	`ns1.nbcuni.com, ns2.nbcuni.com...`
TXT	1	`v=spf1 include:%{ir}.%{v}.%{d}.spf.has.p`
SOA	1	`ns1.nbcuni.com domain\.admin.nbcuni.com`

Analysis

Name Servers

comcastcablenbcu.us is delegated to six name servers: ns1.nbcuni.com, ns2.nbcuni.com, ns3.nbcuni.com, ns4.nbcuni.com, ns5.nbcuni.com and ns6.nbcuni.com.

comcastcablenbcu.us at least partially shares its name servers with other domains, for instance universalnetworks.com.pa, darkwebmagicintel.net, nbcsportschicago.net, 1-900-hot-butt.com and telemundomarketplace.com.

These name servers are commonly used together with pdns5.ultradns.info, pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns6.ultradns.co.uk, ns1.netbcp.com and ns2.netbcp.net.

Hostnames with two IP numbers:

ns1.nbcuni.com points to 2001:502:f3ff::31 and 156.154.64.31

ns2.nbcuni.com points to 2610:a1:1014::31 and 156.154.65.31

ns3.nbcuni.com points to 2610:a1:1015::31 and 156.154.66.31

ns4.nbcuni.com points to 2001:502:4612::31 and 156.154.67.31

ns5.nbcuni.com points to 2610:a1:1016::31 and 156.154.68.31

ns6.nbcuni.com points to 2610:a1:1017::31 and 156.154.69.31

comcastcablenbcu.us - robtex.com