coursebrowser.com - dns.ninja

`coursebrowser.com`

DNSSEC	⚠️ Not signed
A	2600:1f18:4ae:c605:dd5d:b838:5816:d7fb^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	2600:1f18:4ae:c606:78d4:4260:db4e:aeee^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	13.223.25.84^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
A	54.243.117.197^{🇺🇸 Amazon54.242.0.0/15 EC2 IAD prefix}
NS	`ns1.namebrightdns.com` ⭐
		A	2600:1f18:683a:ae1a:c41d:b4cf:322b:2aa6^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.89.42.183^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-89-42-183.compute-1.amazonaws.com`
		A	100.58.124.42^{🇺🇸 Amazon100.48.0.0/12 EC2 IAD prefix}
			PTR	`ec2-100-58-124-42.compute-1.amazonaws.com`
NS	`nsg1.namebrightdns.com`
		A	2600:1f18:683a:ae1a:303c:9b15:3db3:a8a2^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:5a94:e1d2:9d83:c12d^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:9b5a:7d38:2d23:6714^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:3d4d:6b36:7749:419b^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	44.223.19.215^{🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix}
			PTR	`ec2-44-223-19-215.compute-1.amazonaws.com`
		A	54.81.37.191^{🇺🇸 Amazon54.80.0.0/14 EC2 IAD prefix}
			PTR	`ec2-54-81-37-191.compute-1.amazonaws.com`
		A	54.234.103.190^{🇺🇸 Amazon54.234.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-234-103-190.compute-1.amazonaws.com`
NS	`nsg2.namebrightdns.com`
		A	2600:1f18:683a:ae1b:ac3c:fcfb:521d:2fd5^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:ed3d:ef92:9331:4834^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	54.162.235.48^{🇺🇸 Amazon54.160.0.0/14 EC2 IAD prefix}
			PTR	`ec2-54-162-235-48.compute-1.amazonaws.com`
		A	54.221.37.2^{🇺🇸 Amazon54.221.0.0/16 EC2 IAD prefix}
			PTR	`ec2-54-221-37-2.compute-1.amazonaws.com`
		A	174.129.117.232^{🇺🇸 Amazon174.129.0.0/16 Execution Services}
			PTR	`ec2-174-129-117-232.compute-1.amazonaws.com`
TXT	`v=spf1 -all`
TXT	`afternic-verification-G9G3tM8T8EwEizzPzjGJWF`
SOA	`ns1.namebrightdns.com`dns@namebright.com 2026-07-31 #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=1785514337

WOT: SAFE (70/100)

Same first word

coursebrowser.com

coursebrowser.org

DNS History

21 records (7 active, 14 former)

○NSns1.dsredirection.com2016-12-25 → 2018-01-09 · 5 obs

○ 2016-05-01 03:06:42
● 2016-12-25 19:01:10
● 2018-01-09 09:43:06
○ 2026-04-01 03:30:20
○ 2026-07-31 16:21:20

●NSns1.namebrightdns.com2026-04-01 → 2026-07-31 · 3 obs

○ 2018-01-09 09:43:06
● 2026-04-01 03:30:20
● 2026-07-31 16:21:20

○NSns1.sedoparking.com2016-05-01 → 2016-05-01 · 3 obs

● 2016-05-01 03:06:42
○ 2016-12-25 19:01:10
○ 2026-07-31 16:21:20

○NSns2.dsredirection.com2016-12-25 → 2018-01-09 · 5 obs

○ 2016-05-01 03:06:42
● 2016-12-25 19:01:10
● 2018-01-09 09:43:06
○ 2026-04-01 03:30:20
○ 2026-07-31 16:21:20

○NSns2.sedoparking.com2016-05-01 → 2016-05-01 · 3 obs

● 2016-05-01 03:06:42
○ 2016-12-25 19:01:10
○ 2026-07-31 16:21:20

●NSnsg1.namebrightdns.com2026-04-01 → 2026-07-31 · 3 obs

○ 2018-01-09 09:43:06
● 2026-04-01 03:30:20
● 2026-07-31 16:21:20

●NSnsg2.namebrightdns.com2026-04-01 → 2026-07-31 · 3 obs

○ 2018-01-09 09:43:06
● 2026-04-01 03:30:20
● 2026-07-31 16:21:20

○MXmail.nickstel.com2016-05-01 → 2016-05-01 · 3 obs

● 2016-05-01 03:06:42
○ 2016-12-25 19:01:10
○ 2026-07-31 16:21:20

●A13.223.25.842026-04-01 → 2026-07-31 · 3 obs

○ 2018-01-09 09:43:06
● 2026-04-01 03:30:20
● 2026-07-31 16:21:20

○A208.73.210.2002016-12-25 → 2016-12-25 · 4 obs

○ 2016-05-01 03:06:42
● 2016-12-25 19:01:10
○ 2018-01-09 09:43:06
○ 2026-07-31 16:21:20

○A208.73.210.2022018-01-09 → 2018-01-09 · 4 obs

○ 2016-12-25 19:01:10
● 2018-01-09 09:43:06
○ 2026-04-01 03:30:20
○ 2026-07-31 16:21:20

○A208.73.210.2142016-12-25 → 2016-12-25 · 4 obs

○ 2016-05-01 03:06:42
● 2016-12-25 19:01:10
○ 2018-01-09 09:43:06
○ 2026-07-31 16:21:20

○A208.73.210.2172016-12-25 → 2018-01-09 · 5 obs

○ 2016-05-01 03:06:42
● 2016-12-25 19:01:10
● 2018-01-09 09:43:06
○ 2026-04-01 03:30:20
○ 2026-07-31 16:21:20

○A208.73.211.1652018-01-09 → 2018-01-09 · 4 obs

○ 2016-12-25 19:01:10
● 2018-01-09 09:43:06
○ 2026-04-01 03:30:20
○ 2026-07-31 16:21:20

○A208.73.211.1772018-01-09 → 2018-01-09 · 4 obs

○ 2016-12-25 19:01:10
● 2018-01-09 09:43:06
○ 2026-04-01 03:30:20
○ 2026-07-31 16:21:20

○A208.73.211.1782016-12-25 → 2016-12-25 · 4 obs

○ 2016-05-01 03:06:42
● 2016-12-25 19:01:10
○ 2018-01-09 09:43:06
○ 2026-07-31 16:21:20

●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-04-01 → 2026-07-31 · 3 obs

○ 2018-01-09 09:43:06
● 2026-04-01 03:30:20
● 2026-07-31 16:21:20

●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-04-01 → 2026-07-31 · 3 obs

○ 2018-01-09 09:43:06
● 2026-04-01 03:30:20
● 2026-07-31 16:21:20

●A54.243.117.1972026-04-01 → 2026-07-31 · 3 obs

○ 2018-01-09 09:43:06
● 2026-04-01 03:30:20
● 2026-07-31 16:21:20

○A72.52.4.912016-05-01 → 2016-05-01 · 3 obs

● 2016-05-01 03:06:42
○ 2016-12-25 19:01:10
○ 2026-07-31 16:21:20

○PTRns1.dsredirection.com2016-12-25 → 2018-01-09 · 4 obs

● 2016-12-25 19:01:10
● 2018-01-09 09:43:06
○ 2026-04-01 03:30:20
○ 2026-07-31 16:21:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, j.gtld-servers.net, g.gtld-servers.net, f.gtld-servers.net...	-
coursebrowser.com	nsg1.namebrightdns.com, nsg2.namebrightdns.com	12 records

✅ Authoritative Response

Server:44.223.19.215

NS records: nsg1.namebrightdns.com, nsg2.namebrightdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coursebrowser.com (unsigned zone)

⏱️ Timing

Total: 270ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`54.243.117.197, 13.223.25.84`
AAAA	2	`2600:1f18:4ae:c605:dd5d:b838:5816:d7fb, 2600:1f18:4ae:c606:78d4:4260:db4e:aeee`
NS	2	`nsg1.namebrightdns.com, nsg2.namebrightdns.com`
TXT	2	`v=spf1 -all, afternic-verification-G9G3tM8T8EwEizzPzj`
SOA	1	`ns1.namebrightdns.com dns.namebright.com`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (nsg1.namebrightdns.com, nsg1.namebrightdns.com, nsg1.namebrightdns.com...)

Analysis

IP Addresses

coursebrowser.com directs to four IP numbers, which are 13.223.25.84, 54.243.117.197, 2600:1f18:4ae:c605:dd5d:b838:5816:d7fb and 2600:1f18:4ae:c606:78d4:4260:db4e:aeee.

Among the host names that share IP numbers with coursebrowser.com are nexohost.com, mail.onlinepccare.com, dtgshop.com and two others.

Name Servers

Three name servers are authoritative for coursebrowser.com: ns1.namebrightdns.com, nsg1.namebrightdns.com and nsg2.namebrightdns.com.

At least some of coursebrowser.com's name servers are shared with other domains, for example shopqr.com, boekbinderij.com, mrapply.com and two more.

It is common for these name servers to be used in conjunction with the name servers domain-for-sale.hugedomainsdns.com, forsale.hugedomainsdns.com and ns2.namebrightdns.com.

Host names resolving to 7 IP numbers:

nsg1.namebrightdns.com carries IP addresses 44.223.19.215, 54.81.37.191 and 54.234.103.190, with 4 other addresses beyond those.

Hostnames that point to five IP numbers:

nsg2.namebrightdns.com directs to 54.162.235.48, 54.221.37.2, 174.129.117.232 and two other IP addresses.

Hosts with three IP address records:

ns1.namebrightdns.com resolves to three addresses: 3.89.42.183, 100.58.124.42 and 2600:1f18:683a:ae1a:c41d:b4cf:322b:2aa6.