systemthinker.com - dns.ninja

`systemthinker.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	`domain-for-sale.hugedomainsdns.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	`forsale.hugedomainsdns.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 2026-06-24 #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=1782348060

Subdomains

mail.systemthinker.com

Same first word

systemthinker.com

DNS History

17 records (7 active, 10 former)

●NSdomain-for-sale.hugedomainsdns.com2026-03-15 → 2026-06-25 · 3 obs

○ 2018-07-29 23:04:12
● 2026-03-15 20:10:50
● 2026-06-25 00:56:24

●NSforsale.hugedomainsdns.com2026-03-15 → 2026-06-25 · 3 obs

○ 2018-07-29 23:04:12
● 2026-03-15 20:10:50
● 2026-06-25 00:56:24

●NSns1.namebrightdns.com2015-07-17 → 2026-06-25 · 2 obs

● 2015-07-17 08:16:18
● 2026-06-25 00:56:24

○NSns2.namebrightdns.com2015-07-17 → 2018-07-29 · 4 obs

● 2015-07-17 08:16:18
● 2018-07-29 23:04:12
○ 2026-03-15 20:10:50
○ 2026-06-25 00:56:24

○MXanmail.namebrightmail.com2015-07-17 → 2015-07-17 · 3 obs

● 2015-07-17 08:16:18
○ 2015-11-30 18:37:42
○ 2026-06-25 00:56:24

○A107.23.42.502016-03-01 → 2016-03-01 · 4 obs

○ 2015-11-30 18:37:42
● 2016-03-01 09:18:22
○ 2016-06-23 01:15:50
○ 2026-06-25 00:56:24

●A13.223.25.842026-03-15 → 2026-06-25 · 3 obs

○ 2018-07-29 23:04:12
● 2026-03-15 20:10:50
● 2026-06-25 00:56:24

●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-03-15 → 2026-06-25 · 3 obs

○ 2018-07-29 23:04:12
● 2026-03-15 20:10:50
● 2026-06-25 00:56:24

●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-03-15 → 2026-06-25 · 3 obs

○ 2018-07-29 23:04:12
● 2026-03-15 20:10:50
● 2026-06-25 00:56:24

○A52.200.243.1232016-06-23 → 2016-06-23 · 4 obs

○ 2016-03-01 09:18:22
● 2016-06-23 01:15:50
○ 2018-07-29 23:04:12
○ 2026-06-25 00:56:24

○A52.73.136.1402016-03-01 → 2016-03-01 · 4 obs

○ 2015-11-30 18:37:42
● 2016-03-01 09:18:22
○ 2016-06-23 01:15:50
○ 2026-06-25 00:56:24

○A54.152.144.2432016-06-23 → 2016-06-23 · 4 obs

○ 2016-03-01 09:18:22
● 2016-06-23 01:15:50
○ 2018-07-29 23:04:12
○ 2026-06-25 00:56:24

○A54.174.31.2542015-07-17 → 2015-11-30 · 4 obs

● 2015-07-17 08:16:18
● 2015-11-30 18:37:42
○ 2016-03-01 09:18:22
○ 2026-06-25 00:56:24

○A54.208.74.2152015-07-17 → 2015-11-30 · 4 obs

● 2015-07-17 08:16:18
● 2015-11-30 18:37:42
○ 2016-03-01 09:18:22
○ 2026-06-25 00:56:24

●A54.243.117.1972026-03-15 → 2026-06-25 · 3 obs

○ 2018-07-29 23:04:12
● 2026-03-15 20:10:50
● 2026-06-25 00:56:24

○CNAMEhdredirect-lb-399551664.us-east-1.elb.amazonaws.com2015-07-17 → 2016-06-23 · 4 obs

● 2015-07-17 08:16:18
● 2016-06-23 01:15:50
○ 2018-07-29 23:04:12
○ 2026-06-25 00:56:24

○CNAMEhdredirect-lb3-890977680.us-east-1.elb.amazonaws.com2018-07-29 → 2018-07-29 · 4 obs

○ 2016-06-23 01:15:50
● 2018-07-29 23:04:12
○ 2026-03-15 20:10:50
○ 2026-06-25 00:56:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
systemthinker.com	domain-for-sale.hugedomainsdns.com, forsale.hugedomainsdns.com	12 records

✅ Authoritative Response

Server:18.232.139.44

NS records: domain-for-sale.hugedomainsdns.com, forsale.hugedomainsdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for systemthinker.com (unsigned zone)

⏱️ Timing

Total: 155ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`13.223.25.84, 54.243.117.197`
AAAA	2	`2600:1f18:4ae:c605:dd5d:b838:5816:d7fb, 2600:1f18:4ae:c606:78d4:4260:db4e:aeee`
NS	2	`forsale.hugedomainsdns.com, domain-for-sale.hugedomainsdns.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 (domain-for-sale.hugedomainsdns.com, domain-for-sale.hugedomainsdns.com, domain-for-sale.hugedomainsdns.com...)

Analysis

Hierarchy

systemthinker.com is a parent domain of mail.systemthinker.com.

IP Addresses

systemthinker.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.

Among the host names that share IP numbers with systemthinker.com are winterfell.justtheweb.com, artistsmeet.com, soupgarden.com and two others.

Name Servers

The authoritative name servers for systemthinker.com are domain-for-sale.hugedomainsdns.com, forsale.hugedomainsdns.com and ns1.namebrightdns.com — three in total.

systemthinker.com shares at least some of its name servers with other domains, including clamstack.com, protradi.com, heatpumpgrant.com and two others.

These name servers are frequently paired with the name servers nsg1.namebrightdns.com, nsg2.namebrightdns.com and ns2.namebrightdns.com.

Host names resolving to 6 IP numbers:

Hostname domain-for-sale.hugedomainsdns.com directs to 3.88.240.25, 52.55.198.41 and 54.175.130.15 along with 3 other IP addresses.

Hostname forsale.hugedomainsdns.com directs to 3.80.109.14, 18.232.139.44 and 98.81.3.34 along with 3 other IP addresses.

Hostnames that point to five IP numbers:

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