softwaretheory.net - dns.ninja

`softwaretheory.net`

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:9b5a:7d38:2d23:6714^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.93.61.140^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-93-61-140.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`
		A	174.129.117.232^{🇺🇸 Amazon174.129.0.0/16 Execution Services}
			PTR	`ec2-174-129-117-232.compute-1.amazonaws.com`
NS	`nsg2.namebrightdns.com`
		A	2600:1f18:683a:ae1a:1ff8:84b4:19de:5ca6^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:18c:37a5:651d:7bdc^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		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	54.235.53.129^{🇺🇸 Amazon54.234.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-235-53-129.compute-1.amazonaws.com`
TXT	`v=spf1 -all`
TXT	`afternic-verification-G9G3tM8T8EwEizzPzjGJWF`
SOA	`ns1.namebrightdns.com`dns@namebright.com 2026-08-05 #1

`net`

	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=1785965934

WOT: UNKNOWN (46/100)

Subdomains

www.softwaretheory.net

Same first word

softwaretheory.net

DNS History

21 records (7 active, 14 former)

○NSdns10.parkpage.foundationapi.com2015-07-11 → 2015-07-11 · 3 obs

● 2015-07-11 10:02:30
○ 2015-12-06 14:17:30
○ 2026-08-05 21:40:36

○NSdns11.parkpage.foundationapi.com2015-07-11 → 2015-07-11 · 3 obs

● 2015-07-11 10:02:30
○ 2015-12-06 14:17:30
○ 2026-08-05 21:40:36

○NSdns9.parkpage.foundationapi.com2015-07-11 → 2015-07-11 · 3 obs

● 2015-07-11 10:02:30
○ 2015-12-06 14:17:30
○ 2026-08-05 21:40:36

○NSns0.cloudwebdns.com2015-12-06 → 2016-03-28 · 5 obs

○ 2015-07-11 10:02:30
● 2015-12-06 14:17:30
● 2016-03-28 19:16:38
○ 2016-12-24 12:45:08
○ 2026-08-05 21:40:36

○NSns1.dnsowl.com2020-02-12 → 2020-02-12 · 4 obs

○ 2016-12-24 12:45:08
● 2020-02-12 10:44:42
○ 2026-06-08 05:38:18
○ 2026-08-05 21:40:36

●NSns1.namebrightdns.com2026-06-08 → 2026-08-05 · 3 obs

○ 2020-02-12 10:44:42
● 2026-06-08 05:38:18
● 2026-08-05 21:40:36

○NSns2.dnsowl.com2020-02-12 → 2020-02-12 · 4 obs

○ 2016-12-24 12:45:08
● 2020-02-12 10:44:42
○ 2026-06-08 05:38:18
○ 2026-08-05 21:40:36

○NSns3.dnsowl.com2020-02-12 → 2020-02-12 · 4 obs

○ 2016-12-24 12:45:08
● 2020-02-12 10:44:42
○ 2026-06-08 05:38:18
○ 2026-08-05 21:40:36

○NSns5.cloudwebdns.com2015-12-06 → 2016-03-28 · 5 obs

○ 2015-07-11 10:02:30
● 2015-12-06 14:17:30
● 2016-03-28 19:16:38
○ 2016-12-24 12:45:08
○ 2026-08-05 21:40:36

○NSns6.cloudwebdns.com2015-12-06 → 2016-03-28 · 5 obs

○ 2015-07-11 10:02:30
● 2015-12-06 14:17:30
● 2016-03-28 19:16:38
○ 2016-12-24 12:45:08
○ 2026-08-05 21:40:36

●NSnsg1.namebrightdns.com2026-06-08 → 2026-08-05 · 3 obs

○ 2020-02-12 10:44:42
● 2026-06-08 05:38:18
● 2026-08-05 21:40:36

●NSnsg2.namebrightdns.com2026-06-08 → 2026-08-05 · 3 obs

○ 2020-02-12 10:44:42
● 2026-06-08 05:38:18
● 2026-08-05 21:40:36

●A13.223.25.842026-06-08 → 2026-08-05 · 3 obs

○ 2020-02-12 10:44:42
● 2026-06-08 05:38:18
● 2026-08-05 21:40:36

○A209.99.40.2222015-07-11 → 2015-07-11 · 3 obs

● 2015-07-11 10:02:30
○ 2015-12-06 14:17:30
○ 2026-08-05 21:40:36

○A209.99.40.2232015-07-11 → 2015-07-11 · 3 obs

● 2015-07-11 10:02:30
○ 2026-06-08 05:38:18
○ 2026-08-05 21:40:36

○A216.144.246.1562015-12-06 → 2015-12-06 · 4 obs

○ 2015-07-11 10:02:30
● 2015-12-06 14:17:30
○ 2016-03-28 19:16:38
○ 2026-08-05 21:40:36

●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-06-08 → 2026-08-05 · 3 obs

○ 2020-02-12 10:44:42
● 2026-06-08 05:38:18
● 2026-08-05 21:40:36

●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-06-08 → 2026-08-05 · 3 obs

○ 2020-02-12 10:44:42
● 2026-06-08 05:38:18
● 2026-08-05 21:40:36

●A54.243.117.1972026-06-08 → 2026-08-05 · 3 obs

○ 2020-02-12 10:44:42
● 2026-06-08 05:38:18
● 2026-08-05 21:40:36

○A91.210.104.672016-03-28 → 2016-03-28 · 4 obs

○ 2015-12-06 14:17:30
● 2016-03-28 19:16:38
○ 2016-12-24 12:45:08
○ 2026-08-05 21:40:36

○A99.81.40.782020-02-12 → 2020-02-12 · 4 obs

○ 2016-12-24 12:45:08
● 2020-02-12 10:44:42
○ 2026-06-08 05:38:18
○ 2026-08-05 21:40:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	k.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net, a.gtld-servers.net...	-
softwaretheory.net	nsg1.namebrightdns.com, nsg2.namebrightdns.com	-

✅ Authoritative Response

Server:54.235.53.129

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for softwaretheory.net (unsigned zone)

⏱️ Timing

Total: 383ms | Queries: -

📄 Records

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

Analysis

Hierarchy

www.softwaretheory.net is a subdomain of softwaretheory.net.

IP Addresses

softwaretheory.net points to the 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 softwaretheory.net are robtex.com252fwww.wapdan.com, www.hwktyj.com.whoisbucket.com, mail.gatsuone.com and two others.

Name Servers

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

The name servers of softwaretheory.net overlap at least partially with those of other domains — among them mail.nexttutorial.com, rapduo.com, 4.264770464.6461796c6967687477696e64796a616e6540686f746d616message.888freeslots.com and two more.

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

Host names resolving to 7 IP numbers:

nsg2.namebrightdns.com maps to 54.162.235.48, 54.221.37.2, 54.235.53.129 and 4 additional IP addresses.

Hostnames that point to five IP numbers:

nsg1.namebrightdns.com directs to 3.93.61.140, 54.234.103.190, 174.129.117.232 and two other IP addresses.

Hosts with three IP address records:

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