mastercools.com - dns.ninja

`mastercools.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:d57d:390a:64b4:d4f1^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	52.203.211.134^{🇺🇸 Amazon52.200.0.0/13 EC2 IAD prefix}
			PTR	`ec2-52-203-211-134.compute-1.amazonaws.com`
		A	52.204.81.90^{🇺🇸 Amazon52.200.0.0/13 EC2 IAD prefix}
			PTR	`ec2-52-204-81-90.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:ae1a:7b03:f4b:4bfa:8287^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:b159:2be8:f48c:b374^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	13.221.131.54^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
			PTR	`ec2-13-221-131-54.compute-1.amazonaws.com`
		A	13.222.195.178^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
			PTR	`ec2-13-222-195-178.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:ae1b:5b81:82bc:6de0:b02c^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:b942:bb73:2f59:d7af^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:da4a:4683:1131:8bce^{🇺🇸 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	98.81.3.34^{🇺🇸 Amazon98.80.0.0/13 EC2 IAD Prefix}
			PTR	`ec2-98-81-3-34.compute-1.amazonaws.com`
		A	98.83.212.177^{🇺🇸 Amazon98.80.0.0/13 EC2 IAD Prefix}
			PTR	`ec2-98-83-212-177.compute-1.amazonaws.com`
TXT	`v=spf1 -all`
TXT	`afternic-verification-G9G3tM8T8EwEizzPzjGJWF`
SOA	`ns1.namebrightdns.com`dns@namebright.com 2026-06-29 #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=1782779141

Subdomains

nullmx.mastercools.com

Same first word

mastercools.com

Similar names

coolstreams.com

closetomars.com

castlerooms.com

teamscolors.com

DNS History

20 records (7 active, 13 former)

●NSns1.namebrightdns.com2015-07-05 → 2026-06-30 · 6 obs

○ 2008-03-17 05:14:24
● 2015-07-05 16:29:54
● 2016-02-02 10:15:58
○ 2016-05-03 11:28:42
● 2017-01-11 06:38:48
● 2026-06-30 00:36:52

○NSns2.namebrightdns.com2015-07-05 → 2018-01-28 · 9 obs

○ 2008-03-17 05:14:24
● 2015-07-05 16:29:54
● 2015-11-07 21:20:32
○ 2016-02-02 10:15:58
○ 2016-05-03 11:28:42
● 2017-01-11 06:38:48
● 2018-01-28 06:42:00
○ 2026-02-20 05:04:18
○ 2026-06-30 00:36:52

●NSnsg1.namebrightdns.com2016-02-02 → 2026-06-30 · 7 obs

○ 2015-11-07 21:20:32
● 2016-02-02 10:15:58
● 2016-05-03 11:28:42
○ 2017-01-11 06:38:48
○ 2018-01-28 06:42:00
● 2026-02-20 05:04:18
● 2026-06-30 00:36:52

●NSnsg2.namebrightdns.com2015-11-07 → 2026-06-30 · 7 obs

○ 2015-07-05 16:29:54
● 2015-11-07 21:20:32
● 2016-05-03 11:28:42
○ 2017-01-11 06:38:48
○ 2018-01-28 06:42:00
● 2026-02-20 05:04:18
● 2026-06-30 00:36:52

○MXanmail.namebrightmail.com2015-07-05 → 2015-07-05 · 4 obs

○ 2008-03-17 05:14:24
● 2015-07-05 16:29:54
○ 2015-11-07 21:20:32
○ 2026-06-30 00:36:52

○MXnullmx.mastercools.com2008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 05:14:24
○ 2015-07-05 16:29:54
○ 2026-06-30 00:36:52

●A13.223.25.842026-02-20 → 2026-06-30 · 3 obs

○ 2018-01-28 06:42:00
● 2026-02-20 05:04:18
● 2026-06-30 00:36:52

●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-02-20 → 2026-06-30 · 3 obs

○ 2018-01-28 06:42:00
● 2026-02-20 05:04:18
● 2026-06-30 00:36:52

●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-02-20 → 2026-06-30 · 3 obs

○ 2018-01-28 06:42:00
● 2026-02-20 05:04:18
● 2026-06-30 00:36:52

○A52.200.243.1232016-05-03 → 2016-05-03 · 4 obs

○ 2016-02-02 10:15:58
● 2016-05-03 11:28:42
○ 2017-01-11 06:38:48
○ 2026-06-30 00:36:52

○A54.152.144.2432016-05-03 → 2016-05-03 · 4 obs

○ 2016-02-02 10:15:58
● 2016-05-03 11:28:42
○ 2017-01-11 06:38:48
○ 2026-06-30 00:36:52

○A54.174.31.2542015-07-05 → 2015-11-07 · 4 obs

● 2015-07-05 16:29:54
● 2015-11-07 21:20:32
○ 2016-02-02 10:15:58
○ 2026-06-30 00:36:52

○A54.208.74.2152015-07-05 → 2015-11-07 · 4 obs

● 2015-07-05 16:29:54
● 2015-11-07 21:20:32
○ 2016-02-02 10:15:58
○ 2026-06-30 00:36:52

○A54.209.90.812016-02-02 → 2016-02-02 · 4 obs

○ 2015-11-07 21:20:32
● 2016-02-02 10:15:58
○ 2016-05-03 11:28:42
○ 2026-06-30 00:36:52

●A54.243.117.1972026-02-20 → 2026-06-30 · 3 obs

○ 2018-01-28 06:42:00
● 2026-02-20 05:04:18
● 2026-06-30 00:36:52

○A54.84.53.382017-01-11 → 2017-01-11 · 4 obs

○ 2016-05-03 11:28:42
● 2017-01-11 06:38:48
○ 2018-01-28 06:42:00
○ 2026-06-30 00:36:52

○A54.85.54.292016-02-02 → 2016-02-02 · 4 obs

○ 2015-11-07 21:20:32
● 2016-02-02 10:15:58
○ 2016-05-03 11:28:42
○ 2026-06-30 00:36:52

○A54.88.107.1402017-01-11 → 2017-01-11 · 4 obs

○ 2016-05-03 11:28:42
● 2017-01-11 06:38:48
○ 2018-01-28 06:42:00
○ 2026-06-30 00:36:52

○CNAMEhdredirect-lb-399551664.us-east-1.elb.amazonaws.com2015-07-05 → 2016-05-03 · 5 obs

○ 2008-03-17 05:14:24
● 2015-07-05 16:29:54
● 2016-05-03 11:28:42
○ 2017-01-11 06:38:48
○ 2026-06-30 00:36:52

○CNAMEhdredirect-lb3-890977680.us-east-1.elb.amazonaws.com2017-01-11 → 2018-01-28 · 5 obs

○ 2016-05-03 11:28:42
● 2017-01-11 06:38:48
● 2018-01-28 06:42:00
○ 2026-02-20 05:04:18
○ 2026-06-30 00:36:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, k.gtld-servers.net, i.gtld-servers.net, m.gtld-servers.net...	-
mastercools.com	nsg1.namebrightdns.com, nsg2.namebrightdns.com	12 records

✅ Authoritative Response

Server:13.221.131.54

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mastercools.com (unsigned zone)

⏱️ Timing

Total: 216ms | 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	`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

Hierarchy

nullmx.mastercools.com is a subdomain of mastercools.com.

IP Addresses

mastercools.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.

smtp.autoheim.com, samuiweb.com, iwashing.com and two other host names share IP numbers with mastercools.com.

Name Servers

mastercools.com carries NS records delegating to ns1.namebrightdns.com, nsg1.namebrightdns.com and nsg2.namebrightdns.com.

The name servers of mastercools.com overlap at least partially with those of other domains — among them eurotow.com, cbtrack.com, igodd.com and two more.

The name servers ns2.namebrightdns.com, domain-for-sale.hugedomainsdns.com and forsale.hugedomainsdns.com are commonly seen alongside these name servers.

Hostnames that resolve to 6 IP addresses:

nsg1.namebrightdns.com resolves to 13.221.131.54, 13.222.195.178 and 54.175.130.15 among others, with 3 other IP addresses in total.

nsg2.namebrightdns.com resolves to 3.80.109.14, 98.81.3.34 and 98.83.212.177 among others, with 3 other IP addresses in total.

Hostnames pointing to five IP numbers:

ns1.namebrightdns.com resolves to four IP addresses: 52.203.211.134, 52.204.81.90, 2600:1f18:683a:ae1a:6900:d1bd:7672:d0ca and two others.