`northrop-grumman.com`

DNSSEC	⚠️ Not signed
NS	`nsx1.northgrum.com` ⭐ ⚠️ Not in parent delegation
		A	134.223.120.74^{🇺🇸 AS1906134.223.0.0/16}
			PTR	`sslebxdnx01.northgrum.com`
NS	`dnsdal.northgrum.com` ⚠️ Not in zone NS records
		A	134.223.120.74^{🇺🇸 AS1906134.223.0.0/16}
			PTR	`sslebxdnx01.northgrum.com`
NS	`nsx2.northgrum.com` ⚠️ Not in parent delegation
		A	134.223.232.74^{🇺🇸 AS1906134.223.232.0/24}
			PTR	`ssrlmxdnx01.northgrum.com`
NS	`nsx3.northgrum.com` ⚠️ Not in parent delegation
		A	157.127.124.203^{🇺🇸 AS1906157.127.0.0/16}
			PTR	`sundown.northgrum.com`
NS	`nsx4.northgrum.com` ⚠️ Not in parent delegation
		A	157.127.124.219^{🇺🇸 AS1906157.127.0.0/16}
			PTR	`po.northgrum.com`
NS	`po.northgrum.com` ⚠️ Not in zone NS records
		A	157.127.124.219^{🇺🇸 AS1906157.127.0.0/16}
			PTR	`po.northgrum.com`
NS	`sundown.northgrum.com` ⚠️ Not in zone NS records
		A	157.127.124.203^{🇺🇸 AS1906157.127.0.0/16}
			PTR	`sundown.northgrum.com`
NS	`sunrise.northgrum.com` ⚠️ Not in zone NS records
		A	134.223.232.74^{🇺🇸 AS1906134.223.232.0/24}
			PTR	`ssrlmxdnx01.northgrum.com`
SOA	`nsx1.northgrum.com`ng-dns-admin@ngc.com serial=9

`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=1778354921

Subdomains

www.northrop-grumman.com

Same first word

northrop-grumman.com

northrop-grumman.net

DNS History

10 records (8 active, 2 former)

●NSdnsdal.northgrum.com2026-03-29 → 2026-05-09 · 3 obs

○ 2016-09-13 17:34:26
● 2026-03-29 08:54:22
● 2026-05-09 19:48:08

○NSngdnsw.northgrum.com2015-06-07 → 2016-09-13 · 4 obs

● 2015-06-07 13:18:12
● 2016-09-13 17:34:26
○ 2026-03-29 08:54:22
○ 2026-05-09 19:48:08

●NSnsx1.northgrum.com2026-03-29 → 2026-05-09 · 3 obs

○ 2016-09-13 17:34:26
● 2026-03-29 08:54:22
● 2026-05-09 19:48:08

●NSnsx2.northgrum.com2026-03-29 → 2026-05-09 · 3 obs

○ 2016-09-13 17:34:26
● 2026-03-29 08:54:22
● 2026-05-09 19:48:08

●NSnsx3.northgrum.com2026-03-29 → 2026-05-09 · 3 obs

○ 2016-09-13 17:34:26
● 2026-03-29 08:54:22
● 2026-05-09 19:48:08

●NSnsx4.northgrum.com2026-03-29 → 2026-05-09 · 3 obs

○ 2016-09-13 17:34:26
● 2026-03-29 08:54:22
● 2026-05-09 19:48:08

●NSpo.northgrum.com2026-03-29 → 2026-05-09 · 3 obs

○ 2016-09-13 17:34:26
● 2026-03-29 08:54:22
● 2026-05-09 19:48:08

○NSpuff.northgrum.com2015-06-07 → 2016-09-13 · 4 obs

● 2015-06-07 13:18:12
● 2016-09-13 17:34:26
○ 2026-03-29 08:54:22
○ 2026-05-09 19:48:08

●NSsundown.northgrum.com2015-06-07 → 2026-05-09 · 2 obs

● 2015-06-07 13:18:12
● 2026-05-09 19:48:08

●NSsunrise.northgrum.com2026-03-29 → 2026-05-09 · 3 obs

○ 2016-09-13 17:34:26
● 2026-03-29 08:54:22
● 2026-05-09 19:48:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
northrop-grumman.com	po.northgrum.com, sundown.northgrum.com, sunrise.northgrum.com, dnsdal.northgrum.com	4 records

✅ Authoritative Response

Server:134.223.120.74

NS records: po.northgrum.com, sundown.northgrum.com, sunrise.northgrum.com, dnsdal.northgrum.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for northrop-grumman.com (unsigned zone)

⏱️ Timing

Total: 174ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`nsx4.northgrum.com, nsx2.northgrum.com...`
SOA	1	`nsx1.northgrum.com ng-dns-admin.ngc.com`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (po.northgrum.com, sundown.northgrum.com, sunrise.northgrum.com...)

Analysis

Hierarchy

northrop-grumman.com is the parent of www.northrop-grumman.com.

Name Servers

northrop-grumman.com is delegated to eight name servers: dnsdal.northgrum.com, nsx1.northgrum.com, nsx2.northgrum.com, nsx3.northgrum.com, nsx4.northgrum.com, po.northgrum.com, sundown.northgrum.com and sunrise.northgrum.com.

northrop-grumman.com at least partially shares name servers with other domains, for instance 43.26.199.in-addr.arpa, 220.20.208.in-addr.arpa, atk.net, ts.northropgrumman.com and 46.26.199.in-addr.arpa.

These name servers are commonly used alongside ngdnsw.northgrum.com and sudown.northgrum.com.

Host names with one IP number:

The host name dnsdal.northgrum.com points to: 134.223.120.74.

The host name nsx1.northgrum.com points to: 134.223.120.74.

The host name nsx2.northgrum.com points to: 134.223.232.74.

The host name nsx3.northgrum.com points to: 157.127.124.203.

The host name nsx4.northgrum.com points to: 157.127.124.219.

The host name po.northgrum.com points to: 157.127.124.219.

The host name sundown.northgrum.com points to: 157.127.124.203.

The host name sunrise.northgrum.com points to: 134.223.232.74.

Host names that point to 134.223.120.74: dnsdal.northgrum.com and nsx1.northgrum.com.

Host names that point to 134.223.232.74: nsx2.northgrum.com and sunrise.northgrum.com.

Host names that point to 157.127.124.203: nsx3.northgrum.com and sundown.northgrum.com.

Host names that point to 157.127.124.219: nsx4.northgrum.com and po.northgrum.com.

northrop-grumman.com - robtex.com