🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`knowledgebaseapp.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:ae1b:ca7c:b680:26a9:5679^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	54.87.15.152^{🇺🇸 Amazon54.87.0.0/16 EC2 IAD prefix}
			PTR	`ec2-54-87-15-152.compute-1.amazonaws.com`
		A	54.167.43.58^{🇺🇸 Amazon54.167.0.0/17}
			PTR	`ec2-54-167-43-58.compute-1.amazonaws.com`
NS	`nsg1.namebrightdns.com`
		A	2600:1f18:683a:ae1a:bf98:4592:dea7:ef46^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:d15c:df1c:fe00:6ed8^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:c2a7:93d4:2142:b21b^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	13.221.70.139^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
			PTR	`ec2-13-221-70-139.compute-1.amazonaws.com`
		A	52.90.246.139^{🇺🇸 Amazon52.90.0.0/15 EC2 IAD prefix}
			PTR	`ec2-52-90-246-139.compute-1.amazonaws.com`
		A	107.20.71.31^{🇺🇸 Amazon107.20.0.0/16 EC2 Prefix}
			PTR	`ec2-107-20-71-31.compute-1.amazonaws.com`
NS	`nsg2.namebrightdns.com`
		A	2600:1f18:683a:ae1a:4cc0:5acf:aad1:572a^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:2d54:86cb:38cb:6beb^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:972d:ba8c:15bd:1fc4^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	54.82.105.15^{🇺🇸 Amazon54.80.0.0/14 EC2 IAD prefix}
			PTR	`ec2-54-82-105-15.compute-1.amazonaws.com`
		A	54.198.23.75^{🇺🇸 Amazon54.198.0.0/16 EC2 IAD prefix}
			PTR	`ec2-54-198-23-75.compute-1.amazonaws.com`
		A	54.209.221.205^{🇺🇸 Amazon54.208.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-209-221-205.compute-1.amazonaws.com`
TXT	`afternic-verification-G9G3tM8T8EwEizzPzjGJWF`
TXT	`v=spf1 -all`
SOA	`ns1.namebrightdns.com`dns@namebright.com 2026-10-02 #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=1790998619

Subdomains

mail.knowledgebaseapp.com

Same first word

knowledgebaseapp.com

Previous names

Next names

DNS History

10 records (7 active, 3 former)

○NSns1.dreamhost.com2015-06-19 → 2018-07-12 · 4 obs

● 2015-06-19 01:39:10
● 2018-07-12 12:48:24
○ 2026-08-27 11:17:18
○ 2026-10-03 04:07:32

●NSns1.namebrightdns.com2026-08-27 → 2026-10-03 · 3 obs

○ 2018-07-12 12:48:24
● 2026-08-27 11:17:18
● 2026-10-03 04:07:32

○NSns2.dreamhost.com2015-06-19 → 2018-07-12 · 4 obs

● 2015-06-19 01:39:10
● 2018-07-12 12:48:24
○ 2026-08-27 11:17:18
○ 2026-10-03 04:07:32

○NSns3.dreamhost.com2015-06-19 → 2018-07-12 · 4 obs

● 2015-06-19 01:39:10
● 2018-07-12 12:48:24
○ 2026-08-27 11:17:18
○ 2026-10-03 04:07:32

●NSnsg1.namebrightdns.com2026-08-27 → 2026-10-03 · 3 obs

○ 2018-07-12 12:48:24
● 2026-08-27 11:17:18
● 2026-10-03 04:07:32

●NSnsg2.namebrightdns.com2026-08-27 → 2026-10-03 · 3 obs

○ 2018-07-12 12:48:24
● 2026-08-27 11:17:18
● 2026-10-03 04:07:32

●A13.223.25.842026-08-27 → 2026-10-03 · 2 obs

● 2026-08-27 11:17:18
● 2026-10-03 04:07:32

●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-08-27 → 2026-10-03 · 2 obs

● 2026-08-27 11:17:18
● 2026-10-03 04:07:32

●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-08-27 → 2026-10-03 · 2 obs

● 2026-08-27 11:17:18
● 2026-10-03 04:07:32

●A54.243.117.1972026-08-27 → 2026-10-03 · 2 obs

● 2026-08-27 11:17:18
● 2026-10-03 04:07:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net...	-
knowledgebaseapp.com	nsg1.namebrightdns.com, nsg2.namebrightdns.com	12 records

✅ Authoritative Response

Server:107.20.71.31

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for knowledgebaseapp.com (unsigned zone)

⏱️ Timing

Total: 222ms | 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	`nsg2.namebrightdns.com, nsg1.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

Hierarchy

mail.knowledgebaseapp.com is a subdomain of knowledgebaseapp.com.

IP Addresses

knowledgebaseapp.com 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.

Additional host names — 6fc6c.yhsen.com, extendpeace.com, casadocapacete.com and two others — share IP numbers with knowledgebaseapp.com.

Name Servers

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

The name servers of knowledgebaseapp.com overlap at least partially with those of other domains — among them mahjong138.com, hbtc888.com, *.2align.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 with 6 IP numbers:

nsg1.namebrightdns.com carries IP addresses 13.221.70.139, 52.90.246.139 and 107.20.71.31, with 3 other addresses beyond those.

nsg2.namebrightdns.com carries IP addresses 54.82.105.15, 54.198.23.75 and 54.209.221.205, with 3 other addresses beyond those.

Host names with three IP numbers:

ns1.namebrightdns.com resolves to three addresses: 54.87.15.152, 54.167.43.58 and 2600:1f18:683a:ae1b:ca7c:b680:26a9:5679.

knowledgebaseapp.com - robtex.com