`doiunderstand.com`

DNSSEC	⚠️ Not signed
A	76.76.21.21
NS	`ns-cloud-b1.googledomains.com` ⭐
		A	2001:4860:4802:32::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b1.googledomains.com`
		A	216.239.32.107^{🇺🇸 Google216.239.32.0/24}
NS	`ns-cloud-b2.googledomains.com`
		A	2001:4860:4802:34::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b2.googledomains.com`
		A	216.239.34.107^{🇺🇸 Google216.239.34.0/24}
NS	`ns-cloud-b3.googledomains.com`
		A	2001:4860:4802:36::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b3.googledomains.com`
		A	216.239.36.107^{🇺🇸 Google216.239.36.0/24}
NS	`ns-cloud-b4.googledomains.com`
		A	2001:4860:4802:38::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b4.googledomains.com`
		A	216.239.38.107^{🇺🇸 Google216.239.38.0/24}
SOA	`ns-cloud-b1.googledomains.com`cloud-dns-hostmaster@google.com serial=1

`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=1784690212

Same first word

doiunderstand.com

DNS History

8 records (5 active, 3 former)

●NSns-cloud-b1.googledomains.com2026-04-21 → 2026-07-22 · 3 obs

○ 2017-12-04 11:16:12
● 2026-04-21 07:34:32
● 2026-07-22 03:27:44

●NSns-cloud-b2.googledomains.com2026-04-21 → 2026-07-22 · 3 obs

○ 2017-12-04 11:16:12
● 2026-04-21 07:34:32
● 2026-07-22 03:27:44

●NSns-cloud-b3.googledomains.com2026-04-21 → 2026-07-22 · 3 obs

○ 2017-12-04 11:16:12
● 2026-04-21 07:34:32
● 2026-07-22 03:27:44

●NSns-cloud-b4.googledomains.com2026-04-21 → 2026-07-22 · 3 obs

○ 2017-12-04 11:16:12
● 2026-04-21 07:34:32
● 2026-07-22 03:27:44

○NSns1.crazydomains.com2017-12-04 → 2017-12-04 · 3 obs

● 2017-12-04 11:16:12
○ 2026-04-21 07:34:32
○ 2026-07-22 03:27:44

○NSns2.crazydomains.com2017-12-04 → 2017-12-04 · 3 obs

● 2017-12-04 11:16:12
○ 2026-04-21 07:34:32
○ 2026-07-22 03:27:44

○A203.170.80.2502017-12-04 → 2017-12-04 · 3 obs

● 2017-12-04 11:16:12
○ 2026-04-21 07:34:32
○ 2026-07-22 03:27:44

●A76.76.21.212026-04-21 → 2026-07-22 · 3 obs

○ 2017-12-04 11:16:12
● 2026-04-21 07:34:32
● 2026-07-22 03:27:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, b.gtld-servers.net, a.gtld-servers.net, h.gtld-servers.net...	-
doiunderstand.com	ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com, ns-cloud-b4.googledomains.com	8 records

✅ Authoritative Response

Server:216.239.32.107

NS records: ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com, ns-cloud-b4.googledomains.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for doiunderstand.com (unsigned zone)

⏱️ Timing

Total: 1726ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`76.76.21.21`
NS	4	`ns-cloud-b2.googledomains.com, ns-cloud-b1.googledomains.com...`
SOA	1	`ns-cloud-b1.googledomains.com cloud-dns-`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns-cloud-b1.googledomains.com, ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com...)

Analysis

IP Addresses

doiunderstand.com has exactly one IP address — 76.76.21.21.

Name Servers

Four name servers handle the delegation for doiunderstand.com: ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com and ns-cloud-b4.googledomains.com.

Four hostnames, each resolving to a pair of IP addresses: ns-cloud-b1.googledomains.com directs to 216.239.32.107 and 2001:4860:4802:32::6b; ns-cloud-b2.googledomains.com directs to 216.239.34.107 and 2001:4860:4802:34::6b; ns-cloud-b3.googledomains.com directs to 216.239.36.107 and 2001:4860:4802:36::6b; ns-cloud-b4.googledomains.com directs to 216.239.38.107 and 2001:4860:4802:38::6b.

doiunderstand.com - robtex.com