coursecomment.com - dns.ninja

`coursecomment.com`

DNSSEC	⚠️ Not signed
A	128.121.42.38^{🇺🇸 NTTC-GIN-RFC2270128.121.42.0/23 Rutilance Networks (dedicated ASN)}
NS	`ns1-07.azure-dns.com` ⭐
		A	2603:1061:0:700::7^{🇺🇸 Microsoft2603:1000::/25 MICROSOFT}
			PTR	`ns1-07.azure-dns.com`
		A	13.107.236.7^{🇺🇸 Microsoft13.104.0.0/14 MICROSOFT}
NS	`ns2-07.azure-dns.net`
		A	2620:1ec:8ec:700::7^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns2-07.azure-dns.net`
		A	150.171.21.7^{🇺🇸 Microsoft150.171.0.0/16 MICROSOFT}
NS	`ns3-07.azure-dns.org`
		A	2a01:111:4000:700::7^{🇬🇧 Microsoft2a01:111:4000::/36}
			PTR	`ns3-07.azure-dns.org`
		A	204.14.183.7^{🇺🇸 Microsoft204.14.180.0/22}
NS	`ns4-07.azure-dns.info`
		A	2620:1ec:bda:700::7^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns4-07.azure-dns.info`
		A	208.84.5.7^{🇺🇸 Microsoft208.84.0.0/21 MICROSOFT}
MX	`coursecomment-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c902::4^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj0pr03cu01504.inbound.protection.outlook.com`
		A	2a01:111:f403:c91d::b^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-mw2pr02cu00603.inbound.protection.outlook.com`
		A	2a01:111:f403:c927::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn6pr21cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:f90a::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn6pr02cu00300.inbound.protection.outlook.com`
		A	52.101.9.17^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
		A	52.101.9.20^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bl0pr02cu00604.inbound.protection.outlook.com`
		A	52.101.50.10^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-mw2pr02cu00502.inbound.protection.outlook.com`
		A	52.101.194.13^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ch0pr04cu00605.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.protection.outlook.com -allMS=ms99143609`
SOA	`ns1-07.azure-dns.com`azuredns-hostmaster@microsoft.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=1784686837

Same first word

coursecomment.com

DNS History

18 records (6 active, 12 former)

●NSns1-07.azure-dns.com2026-03-15 → 2026-07-22 · 3 obs

○ 2017-12-21 22:26:16
● 2026-03-15 11:48:42
● 2026-07-22 02:23:58

○NSns10.dnsmadeeasy.com2015-06-14 → 2016-12-24 · 4 obs

● 2015-06-14 02:29:50
● 2016-12-24 11:32:56
○ 2017-12-21 22:26:16
○ 2026-07-22 02:23:58

○NSns11.dnsmadeeasy.com2015-06-14 → 2016-12-24 · 4 obs

● 2015-06-14 02:29:50
● 2016-12-24 11:32:56
○ 2017-12-21 22:26:16
○ 2026-07-22 02:23:58

○NSns12.dnsmadeeasy.com2015-06-14 → 2016-12-24 · 4 obs

● 2015-06-14 02:29:50
● 2016-12-24 11:32:56
○ 2017-12-21 22:26:16
○ 2026-07-22 02:23:58

○NSns13.dnsmadeeasy.com2015-06-14 → 2016-12-24 · 4 obs

● 2015-06-14 02:29:50
● 2016-12-24 11:32:56
○ 2017-12-21 22:26:16
○ 2026-07-22 02:23:58

○NSns14.dnsmadeeasy.com2015-06-14 → 2016-12-24 · 4 obs

● 2015-06-14 02:29:50
● 2016-12-24 11:32:56
○ 2017-12-21 22:26:16
○ 2026-07-22 02:23:58

○NSns15.dnsmadeeasy.com2015-06-14 → 2016-12-24 · 4 obs

● 2015-06-14 02:29:50
● 2016-12-24 11:32:56
○ 2017-12-21 22:26:16
○ 2026-07-22 02:23:58

●NSns2-07.azure-dns.net2026-03-15 → 2026-07-22 · 3 obs

○ 2017-12-21 22:26:16
● 2026-03-15 11:48:42
● 2026-07-22 02:23:58

●NSns3-07.azure-dns.org2026-03-15 → 2026-07-22 · 3 obs

○ 2017-12-21 22:26:16
● 2026-03-15 11:48:42
● 2026-07-22 02:23:58

●NSns4-07.azure-dns.info2026-03-15 → 2026-07-22 · 3 obs

○ 2017-12-21 22:26:16
● 2026-03-15 11:48:42
● 2026-07-22 02:23:58

○NSpdns67.ultradns.biz2017-12-21 → 2017-12-21 · 4 obs

○ 2016-12-24 11:32:56
● 2017-12-21 22:26:16
○ 2026-03-15 11:48:42
○ 2026-07-22 02:23:58

○NSpdns67.ultradns.co.uk2017-12-21 → 2017-12-21 · 4 obs

○ 2016-12-24 11:32:56
● 2017-12-21 22:26:16
○ 2026-03-15 11:48:42
○ 2026-07-22 02:23:58

○NSpdns67.ultradns.com2017-12-21 → 2017-12-21 · 4 obs

○ 2016-12-24 11:32:56
● 2017-12-21 22:26:16
○ 2026-03-15 11:48:42
○ 2026-07-22 02:23:58

○NSpdns67.ultradns.info2017-12-21 → 2017-12-21 · 4 obs

○ 2016-12-24 11:32:56
● 2017-12-21 22:26:16
○ 2026-03-15 11:48:42
○ 2026-07-22 02:23:58

○NSpdns67.ultradns.net2017-12-21 → 2017-12-21 · 4 obs

○ 2016-12-24 11:32:56
● 2017-12-21 22:26:16
○ 2026-03-15 11:48:42
○ 2026-07-22 02:23:58

○NSpdns67.ultradns.org2017-12-21 → 2017-12-21 · 4 obs

○ 2016-12-24 11:32:56
● 2017-12-21 22:26:16
○ 2026-03-15 11:48:42
○ 2026-07-22 02:23:58

●MXcoursecomment-com.mail.protection.outlook.com2026-03-15 → 2026-07-22 · 2 obs

● 2026-03-15 11:48:42
● 2026-07-22 02:23:58

●A128.121.42.382015-06-14 → 2026-07-22 · 2 obs

● 2015-06-14 02:29:50
● 2026-07-22 02:23:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
coursecomment.com	ns1-07.azure-dns.com, ns2-07.azure-dns.net, ns3-07.azure-dns.org, ns4-07.azure-dns.info	2 records

✅ Authoritative Response

Server:13.107.236.7

NS records: ns1-07.azure-dns.com, ns2-07.azure-dns.net, ns3-07.azure-dns.org, ns4-07.azure-dns.info

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coursecomment.com (unsigned zone)

⏱️ Timing

Total: 382ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`128.121.42.38`
NS	4	`ns1-07.azure-dns.com, ns2-07.azure-dns.net...`
MX	1	`coursecomment-com.mail.protection.outloo`
TXT	1	`v=spf1 include:spf.protection.outlook.co`
SOA	1	`ns1-07.azure-dns.com azuredns-hostmaster`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1-07.azure-dns.com, ns1-07.azure-dns.com)

Analysis

IP Addresses

coursecomment.com resolves to just one IP address, 128.121.42.38.

Name Servers

The NS records for coursecomment.com point to four name servers: ns1-07.azure-dns.com, ns4-07.azure-dns.info, ns2-07.azure-dns.net and ns3-07.azure-dns.org.

coursecomment.com has at least partial name server overlap with other domains, such as bingads.co.ve, proser.com.sv, murex-welding.com and two others.

ns1-07.azure-dns.com, ns4-07.azure-dns.info, ns2-07.azure-dns.net and ns3-07.azure-dns.org all point to exactly two IP numbers each: ns1-07.azure-dns.com → 13.107.236.7 and 2603:1061:0:700::7; ns4-07.azure-dns.info → 208.84.5.7 and 2620:1ec:bda:700::7; ns2-07.azure-dns.net → 150.171.21.7 and 2620:1ec:8ec:700::7; ns3-07.azure-dns.org → 204.14.183.7 and 2a01:111:4000:700::7.

Mail Servers

The sole mail server for coursecomment.com is coursecomment-com.mail.protection.outlook.com.

With 8 IP addresses total, coursecomment-com.mail.protection.outlook.com resolves to 52.101.9.17, 52.101.9.20, 52.101.50.10 and 5 others.