`extensioncourse.org`

DNSSEC	🔒 Signed (DS record present)
NS	`ns-cloud-c1.googledomains.com` ⭐
		A	2001:4860:4802:32::6c^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-c1.googledomains.com`
		A	216.239.32.108^{🇺🇸 Google216.239.32.0/24}
			PTR	`ns-cloud-c1.googledomains.com`
NS	`ns-cloud-c2.googledomains.com`
		A	2001:4860:4802:34::6c^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-c2.googledomains.com`
		A	216.239.34.108^{🇺🇸 Google216.239.34.0/24}
			PTR	`ns-cloud-c2.googledomains.com`
NS	`ns-cloud-c3.googledomains.com`
		A	2001:4860:4802:36::6c^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-c3.googledomains.com`
		A	216.239.36.108^{🇺🇸 Google216.239.36.0/24}
			PTR	`ns-cloud-c3.googledomains.com`
NS	`ns-cloud-c4.googledomains.com`
		A	2001:4860:4802:38::6c^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-c4.googledomains.com`
		A	216.239.38.108^{🇺🇸 Google216.239.38.0/24}
			PTR	`ns-cloud-c4.googledomains.com`
SOA	`ns-cloud-c1.googledomains.com`cloud-dns-hostmaster@google.com serial=1

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1776035513

Same first word

extensioncourse.org

Similar names

extensionsource.com

DNS History

4 records (4 active, 0 former)

●NSns-cloud-c1.googledomains.com2026-03-10 → 2026-04-12 · 2 obs

● 2026-03-10 03:36:14
● 2026-04-12 23:37:16

●NSns-cloud-c2.googledomains.com2026-03-10 → 2026-04-12 · 2 obs

● 2026-03-10 03:36:14
● 2026-04-12 23:37:16

●NSns-cloud-c3.googledomains.com2026-03-10 → 2026-04-12 · 2 obs

● 2026-03-10 03:36:14
● 2026-04-12 23:37:16

●NSns-cloud-c4.googledomains.com2026-03-10 → 2026-04-12 · 2 obs

● 2026-03-10 03:36:14
● 2026-04-12 23:37:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
extensioncourse.org	ns-cloud-c1.googledomains.com, ns-cloud-c2.googledomains.com, ns-cloud-c3.googledomains.com, ns-cloud-c4.googledomains.com	-

✅ Authoritative Response

Server:216.239.32.108

NS records: ns-cloud-c1.googledomains.com, ns-cloud-c2.googledomains.com, ns-cloud-c3.googledomains.com, ns-cloud-c4.googledomains.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 559ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`ns-cloud-c4.googledomains.com, ns-cloud-c3.googledomains.com...`
SOA	1	`ns-cloud-c1.googledomains.com cloud-dns-`

Analysis

Name Servers

extensioncourse.org is delegated to four name servers: ns-cloud-c1.googledomains.com, ns-cloud-c2.googledomains.com, ns-cloud-c3.googledomains.com and ns-cloud-c4.googledomains.com.

extensioncourse.org at least partially shares name servers with other domains, including nivassoc.com, dandyserenity.com, satyamkraft.in, 89billiardz.com and lumberjackshoes.com.

Hosts with two IP numbers:

Host ns-cloud-c1.googledomains.com points to 2001:4860:4802:32::6c and 216.239.32.108

Host ns-cloud-c2.googledomains.com points to 2001:4860:4802:34::6c and 216.239.34.108

Host ns-cloud-c3.googledomains.com points to 2001:4860:4802:36::6c and 216.239.36.108

Host ns-cloud-c4.googledomains.com points to 2001:4860:4802:38::6c and 216.239.38.108

extensioncourse.org - robtex.com