knowapp.com - dns.ninja

`knowapp.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:ac37^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:1e43^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.30.67^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.172.55^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`courtney.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2682^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`courtney.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c282^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`courtney.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2282^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`courtney.ns.cloudflare.com`
		A	108.162.194.130^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`courtney.ns.cloudflare.com`
		A	162.159.38.130^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`courtney.ns.cloudflare.com`
		A	172.64.34.130^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`courtney.ns.cloudflare.com`
NS	`rex.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c0d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rex.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c30d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rex.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:230d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rex.ns.cloudflare.com`
		A	108.162.195.13^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rex.ns.cloudflare.com`
		A	162.159.44.13^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rex.ns.cloudflare.com`
		A	172.64.35.13^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rex.ns.cloudflare.com`
MX	`alt1.aspmx.l.google.com` ⭐
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com` ⭐
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com` ⭐
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com` ⭐
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c09::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bh-in-f27.1e100.net`
		A	192.178.155.27^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f27.1e100.net`
TXT	`google-site-verification=1QEm7q00dgWUWEzSGH3w88pWPDJf8GRRzm8WDey8xX0`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.30.67, 172.67.172.55
		IPv6 hints	2606:4700:3030::ac43:ac37, 2606:4700:3031::6815:1e43
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=35, name=cloudflare-ech.com
SOA	`courtney.ns.cloudflare.com`dns@cloudflare.com serial=2408694264

`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=1786048884

Subdomains

mail.knowapp.com

Same first word

knowapp.com

knowapp.de

Similar names

appknow.net

DNS History

21 records (11 active, 10 former)

●NScourtney.ns.cloudflare.com2026-02-17 → 2026-08-06 · 3 obs

○ 2017-12-12 11:53:38
● 2026-02-17 18:11:36
● 2026-08-06 20:51:22

○NSns1.mediatemple.net2015-06-05 → 2017-12-12 · 4 obs

● 2015-06-05 16:54:12
● 2017-12-12 11:53:38
○ 2026-02-17 18:11:36
○ 2026-08-06 20:51:22

○NSns2.mediatemple.net2015-06-05 → 2017-12-12 · 4 obs

● 2015-06-05 16:54:12
● 2017-12-12 11:53:38
○ 2026-02-17 18:11:36
○ 2026-08-06 20:51:22

●NSrex.ns.cloudflare.com2026-02-17 → 2026-08-06 · 3 obs

○ 2017-12-12 11:53:38
● 2026-02-17 18:11:36
● 2026-08-06 20:51:22

●MXalt1.aspmx.l.google.com2015-06-05 → 2026-08-06 · 6 obs

● 2015-06-05 16:54:12
● 2016-09-14 08:47:48
○ 2016-12-24 17:19:20
○ 2017-12-12 11:53:38
● 2026-02-17 18:11:36
● 2026-08-06 20:51:22

●MXalt2.aspmx.l.google.com2015-06-05 → 2026-08-06 · 6 obs

● 2015-06-05 16:54:12
● 2016-09-14 08:47:48
○ 2016-12-24 17:19:20
○ 2017-12-12 11:53:38
● 2026-02-17 18:11:36
● 2026-08-06 20:51:22

●MXalt3.aspmx.l.google.com2026-02-17 → 2026-08-06 · 3 obs

○ 2017-12-12 11:53:38
● 2026-02-17 18:11:36
● 2026-08-06 20:51:22

●MXalt4.aspmx.l.google.com2026-02-17 → 2026-08-06 · 3 obs

○ 2017-12-12 11:53:38
● 2026-02-17 18:11:36
● 2026-08-06 20:51:22

●MXaspmx.l.google.com2015-06-05 → 2026-08-06 · 6 obs

● 2015-06-05 16:54:12
● 2016-09-14 08:47:48
○ 2016-12-24 17:19:20
○ 2017-12-12 11:53:38
● 2026-02-17 18:11:36
● 2026-08-06 20:51:22

○MXaspmx2.googlemail.com2015-06-05 → 2016-09-14 · 4 obs

● 2015-06-05 16:54:12
● 2016-09-14 08:47:48
○ 2016-12-24 17:19:20
○ 2026-08-06 20:51:22

○MXaspmx3.googlemail.com2015-06-05 → 2016-09-14 · 4 obs

● 2015-06-05 16:54:12
● 2016-09-14 08:47:48
○ 2016-12-24 17:19:20
○ 2026-08-06 20:51:22

○MXaspmx4.googlemail.com2015-06-05 → 2016-09-14 · 4 obs

● 2015-06-05 16:54:12
● 2016-09-14 08:47:48
○ 2016-12-24 17:19:20
○ 2026-08-06 20:51:22

○MXaspmx5.googlemail.com2015-06-05 → 2016-09-14 · 4 obs

● 2015-06-05 16:54:12
● 2016-09-14 08:47:48
○ 2016-12-24 17:19:20
○ 2026-08-06 20:51:22

○MXmail.knowapp.com2016-12-24 → 2017-12-12 · 5 obs

○ 2016-09-14 08:47:48
● 2016-12-24 17:19:20
● 2017-12-12 11:53:38
○ 2026-02-17 18:11:36
○ 2026-08-06 20:51:22

●A104.21.30.672026-02-17 → 2026-08-06 · 3 obs

○ 2017-12-12 11:53:38
● 2026-02-17 18:11:36
● 2026-08-06 20:51:22

●A172.67.172.552026-02-17 → 2026-08-06 · 3 obs

○ 2017-12-12 11:53:38
● 2026-02-17 18:11:36
● 2026-08-06 20:51:22

●A2606:4700:3030::ac43:ac372026-07-04 → 2026-08-06 · 3 obs

○ 2026-06-10 23:00:08
● 2026-07-04 16:01:22
● 2026-08-06 20:51:22

●A2606:4700:3031::6815:1e432026-07-04 → 2026-08-06 · 3 obs

○ 2026-06-10 23:00:08
● 2026-07-04 16:01:22
● 2026-08-06 20:51:22

○A2606:4700:3035::6815:1e432026-02-17 → 2026-06-10 · 5 obs

○ 2017-12-12 11:53:38
● 2026-02-17 18:11:36
● 2026-06-10 23:00:08
○ 2026-07-04 16:01:22
○ 2026-08-06 20:51:22

○A2606:4700:3036::ac43:ac372026-02-17 → 2026-06-10 · 5 obs

○ 2017-12-12 11:53:38
● 2026-02-17 18:11:36
● 2026-06-10 23:00:08
○ 2026-07-04 16:01:22
○ 2026-08-06 20:51:22

○A72.47.224.1422015-06-05 → 2017-12-12 · 4 obs

● 2015-06-05 16:54:12
● 2017-12-12 11:53:38
○ 2026-02-17 18:11:36
○ 2026-08-06 20:51:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, d.gtld-servers.net, m.gtld-servers.net, e.gtld-servers.net...	-
knowapp.com	courtney.ns.cloudflare.com, rex.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.130

NS records: courtney.ns.cloudflare.com, rex.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for knowapp.com (unsigned zone)

⏱️ Timing

Total: 285ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.30.67, 172.67.172.55`
AAAA	2	`2606:4700:3031::6815:1e43, 2606:4700:3030::ac43:ac37`
NS	2	`courtney.ns.cloudflare.com, rex.ns.cloudflare.com`
MX	5	`ALT1.ASPMX.L.GOOGLE.com (pri: 0), ALT2.ASPMX.L.GOOGLE.com (pri: 0)...`
TXT	1	`google-site-verification=1QEm7q00dgWUWEz`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`courtney.ns.cloudflare.com dns.cloudflar`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (courtney.ns.cloudflare.com, courtney.ns.cloudflare.com, courtney.ns.cloudflare.com...)

Analysis

Hierarchy

mail.knowapp.com is a subdomain of knowapp.com.

IP Addresses

knowapp.com directs to four IP numbers, which are 104.21.30.67, 172.67.172.55, 2606:4700:3030::ac43:ac37 and 2606:4700:3031::6815:1e43.

Among the host names that share IP numbers with knowapp.com are fenilandbollywood.com, mx1.virtual-studio.ch, primevipcentral.com and two others.

Name Servers

DNS delegation for knowapp.com points to two name servers: courtney.ns.cloudflare.com and rex.ns.cloudflare.com.

knowapp.com has the same name server delegation as a number of other domains, such as smarshblast.com, globalcreditpartnersarchive.com, garlinghouse.pro and two more.

The name servers of knowapp.com overlap at least partially with those of other domains — among them official-boswin77.online, khelostar247casino.com, nexapio.com and two more.

These name servers commonly co-occur with the name servers heather.ns.cloudflare.com, ligia.ns.cloudflare.com, iris.ns.cloudflare.com and peyton.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

courtney.ns.cloudflare.com has IP addresses 108.162.194.130, 162.159.38.130 and 172.64.34.130, plus 3 other.

rex.ns.cloudflare.com has IP addresses 108.162.195.13, 162.159.44.13 and 172.64.35.13, plus 3 other.

Mail Servers

Five mail servers handle knowapp.com: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

knowapp.com shares at least some of its mail servers with other domains — for example ns500671.ns500671.ns500671.ns500704.ns500704.ns500704.ns500688.ns500649.ns500671.ns500153.tenderladiesbz.com, ns500698.ns500759.ns500759.ns500758.ns500698.ns500698.ns500698.ns500735.ns500736.ns500698.ns500698.ns500708.ns500708.ns500619.ns500619.ns500652.ns500619.trackreceptor.com, ns500698.ns500758.ns500759.ns500698.ns500759.ns500698.ns500736.ns500698.ns500736.ns500698.ns500708.ns500708.ns500698.ns500708.ns500708.ns500652.trackreceptor.com and two more.

It is common to find these mail servers paired with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 more.

Hosts with two IP numbers each:

aspmx.l.google.com has two IP addresses: 192.178.155.27 and 2607:f8b0:4004:c09::1b.

alt1.aspmx.l.google.com has two IP addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com has two IP addresses: 172.253.116.26 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com has two IP addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com has two IP addresses: 172.253.157.27 and 2a00:1450:400c:c23::1b.