reactcourse.com - dns.ninja

`reactcourse.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:6900:d1bd:7672:d0ca^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:7bc2:638d:8ca6:fcc4^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:3d91:676:6a3b:630e^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:b00c:8d5c:a9a3:9538^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	13.218.191.141^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
			PTR	`ec2-13-218-191-141.compute-1.amazonaws.com`
		A	52.203.211.134^{🇺🇸 Amazon52.200.0.0/13 EC2 IAD prefix}
			PTR	`ec2-52-203-211-134.compute-1.amazonaws.com`
NS	`nsg1.namebrightdns.com`
		A	2600:1f18:683a:ae1a:4a5c:f736:fa58:d85^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:5b81:82bc:6de0:b02c^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:a80d:aa66:fb:1e18^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.88.240.25^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-88-240-25.compute-1.amazonaws.com`
		A	52.55.198.41^{🇺🇸 Amazon52.54.0.0/15 EC2 Region prefix}
			PTR	`ec2-52-55-198-41.compute-1.amazonaws.com`
		A	54.175.130.15^{🇺🇸 Amazon54.174.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-175-130-15.compute-1.amazonaws.com`
NS	`nsg2.namebrightdns.com`
		A	2600:1f18:683a:ae1a:7b03:f4b:4bfa:8287^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:cc5d:cd19:dd5:828e^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:3ee4:3218:624e:fbef^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.80.109.14^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-80-109-14.compute-1.amazonaws.com`
		A	18.232.139.44^{🇺🇸 Amazon18.232.0.0/14 EC2 IAD prefix}
			PTR	`ec2-18-232-139-44.compute-1.amazonaws.com`
		A	98.81.3.34^{🇺🇸 Amazon98.80.0.0/13 EC2 IAD Prefix}
			PTR	`ec2-98-81-3-34.compute-1.amazonaws.com`
TXT	`afternic-verification-G9G3tM8T8EwEizzPzjGJWF`
TXT	`v=spf1 -all`
SOA	`ns1.namebrightdns.com`dns@namebright.com 2026-06-20 #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=1781972815

Same first word

reactcourse.com

Similar names

DNS History

12 records (7 active, 5 former)

○NSns-cloud-b1.googledomains.com2016-12-15 → 2016-12-15 · 3 obs

● 2016-12-15 02:05:14
○ 2020-01-31 01:37:40
○ 2026-06-20 16:28:10

○NSns-cloud-b2.googledomains.com2016-12-15 → 2016-12-15 · 3 obs

● 2016-12-15 02:05:14
○ 2020-01-31 01:37:40
○ 2026-06-20 16:28:10

○NSns-cloud-b3.googledomains.com2016-12-15 → 2016-12-15 · 3 obs

● 2016-12-15 02:05:14
○ 2020-01-31 01:37:40
○ 2026-06-20 16:28:10

○NSns-cloud-b4.googledomains.com2016-12-15 → 2016-12-15 · 3 obs

● 2016-12-15 02:05:14
○ 2020-01-31 01:37:40
○ 2026-06-20 16:28:10

●NSns1.namebrightdns.com2026-03-24 → 2026-06-20 · 3 obs

○ 2020-01-31 01:37:40
● 2026-03-24 21:44:54
● 2026-06-20 16:28:10

●NSnsg1.namebrightdns.com2020-01-31 → 2026-06-20 · 3 obs

○ 2016-12-15 02:05:14
● 2020-01-31 01:37:40
● 2026-06-20 16:28:10

●NSnsg2.namebrightdns.com2020-01-31 → 2026-06-20 · 3 obs

○ 2016-12-15 02:05:14
● 2020-01-31 01:37:40
● 2026-06-20 16:28:10

●A13.223.25.842026-03-24 → 2026-06-20 · 2 obs

● 2026-03-24 21:44:54
● 2026-06-20 16:28:10

●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-03-24 → 2026-06-20 · 2 obs

● 2026-03-24 21:44:54
● 2026-06-20 16:28:10

●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-03-24 → 2026-06-20 · 2 obs

● 2026-03-24 21:44:54
● 2026-06-20 16:28:10

●A54.243.117.1972026-03-24 → 2026-06-20 · 2 obs

● 2026-03-24 21:44:54
● 2026-06-20 16:28:10

○CNAMEhdredirect-lb5-1afb6e2973825a56.elb.us-east-1.amazonaws.com2020-01-31 → 2020-01-31 · 3 obs

● 2020-01-31 01:37:40
○ 2026-03-24 21:44:54
○ 2026-06-20 16:28:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, k.gtld-servers.net, c.gtld-servers.net, a.gtld-servers.net...	-
reactcourse.com	nsg1.namebrightdns.com, nsg2.namebrightdns.com	12 records

✅ Authoritative Response

Server:3.88.240.25

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for reactcourse.com (unsigned zone)

⏱️ Timing

Total: 198ms | Queries: -

📄 Records

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

reactcourse.com resolves to four IP addresses: 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.

Additional host names — richphoenix.com, baoyipin888.com, updatedhealthcare.com and two others — share IP numbers with reactcourse.com.

Name Servers

reactcourse.com is served by three name servers: ns1.namebrightdns.com, nsg1.namebrightdns.com and nsg2.namebrightdns.com.

reactcourse.com shares at least some of its name servers with other domains, including intothebook.com, inspiredingredients.com, teelar.com and two others.

These name servers are frequently paired with the name servers ns2.namebrightdns.com, domain-for-sale.hugedomainsdns.com and forsale.hugedomainsdns.com.

Host names with 6 IP numbers:

ns1.namebrightdns.com maps to 13.218.191.141, 52.203.211.134, 2600:1f18:683a:ae1a:6900:d1bd:7672:d0ca and 3 additional IP addresses.

nsg1.namebrightdns.com maps to 3.88.240.25, 52.55.198.41, 54.175.130.15 and 3 additional IP addresses.

nsg2.namebrightdns.com maps to 3.80.109.14, 18.232.139.44, 98.81.3.34 and 3 additional IP addresses.