knowhou.com - dns.ninja

`knowhou.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:14c6^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:c21e^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.20.198^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.194.30^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`alec.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b3b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alec.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c13b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`alec.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:213b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`alec.ns.cloudflare.com`
		A	108.162.193.59^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alec.ns.cloudflare.com`
		A	172.64.33.59^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alec.ns.cloudflare.com`
		A	173.245.59.59^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alec.ns.cloudflare.com`
NS	`nora.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ad5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nora.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0d5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nora.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20d5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nora.ns.cloudflare.com`
		A	108.162.192.213^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nora.ns.cloudflare.com`
		A	172.64.32.213^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nora.ns.cloudflare.com`
		A	173.245.58.213^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nora.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.20.198, 172.67.194.30
		IPv6 hints	2606:4700:3031::6815:14c6, 2606:4700:3037::ac43:c21e
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=28, name=cloudflare-ech.com
SOA	`alec.ns.cloudflare.com`dns@cloudflare.com serial=2406228267

`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=1781934700

📈 Tranco rank: #298,222

Subdomains

nationaluniv.knowhou.com

Same first word

knowhou.com

DNS History

10 records (6 active, 4 former)

●NSalec.ns.cloudflare.com2026-02-17 → 2026-06-20 · 2 obs

● 2026-02-17 18:01:46
● 2026-06-20 05:53:42

●NSnora.ns.cloudflare.com2026-02-17 → 2026-06-20 · 2 obs

● 2026-02-17 18:01:46
● 2026-06-20 05:53:42

●A104.21.20.1982026-06-20 → 2026-06-20 · 2 obs

○ 2026-04-05 00:04:02
● 2026-06-20 05:53:42

●A172.67.194.302026-06-20 → 2026-06-20 · 2 obs

○ 2026-04-05 00:04:02
● 2026-06-20 05:53:42

○A188.114.96.02026-02-17 → 2026-04-05 · 3 obs

● 2026-02-17 18:01:46
● 2026-04-05 00:04:02
○ 2026-06-20 05:53:42

○A188.114.97.02026-02-17 → 2026-04-05 · 3 obs

● 2026-02-17 18:01:46
● 2026-04-05 00:04:02
○ 2026-06-20 05:53:42

●A2606:4700:3031::6815:14c62026-06-20 → 2026-06-20 · 2 obs

○ 2026-04-05 00:04:02
● 2026-06-20 05:53:42

●A2606:4700:3037::ac43:c21e2026-06-20 → 2026-06-20 · 2 obs

○ 2026-04-05 00:04:02
● 2026-06-20 05:53:42

○A2a06:98c1:3120::2026-02-17 → 2026-04-05 · 3 obs

● 2026-02-17 18:01:46
● 2026-04-05 00:04:02
○ 2026-06-20 05:53:42

○A2a06:98c1:3121::2026-02-17 → 2026-04-05 · 3 obs

● 2026-02-17 18:01:46
● 2026-04-05 00:04:02
○ 2026-06-20 05:53:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, d.gtld-servers.net, m.gtld-servers.net, b.gtld-servers.net...	-
knowhou.com	alec.ns.cloudflare.com, nora.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.213

NS records: alec.ns.cloudflare.com, nora.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for knowhou.com (unsigned zone)

⏱️ Timing

Total: 1674ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.194.30, 104.21.20.198`
AAAA	2	`2606:4700:3031::6815:14c6, 2606:4700:3037::ac43:c21e`
NS	2	`alec.ns.cloudflare.com, nora.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`alec.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

nationaluniv.knowhou.com is a subdomain of knowhou.com.

IP Addresses

knowhou.com points to the four IP addresses 104.21.20.198, 172.67.194.30, 2606:4700:3031::6815:14c6 and 2606:4700:3037::ac43:c21e.

Among the host names that share IP numbers with knowhou.com are xbbyx.com, duofanlianmeng.com, www.apus-peru.com and two others.

Name Servers

knowhou.com is delegated to two name servers: alec.ns.cloudflare.com and nora.ns.cloudflare.com.

knowhou.com has the same name server delegation as a number of other domains, such as gotoformosa.com, pharmknow.com, proximo.cc and two more.

The name servers of knowhou.com overlap at least partially with those of other domains — among them shopaip.com, facingaddiction.org, 4a8k.tk and two more.

These name servers commonly appear in combination with the name servers daisy.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

alec.ns.cloudflare.com resolves to 108.162.193.59, 172.64.33.59, 173.245.59.59 and 3 other IP addresses.

nora.ns.cloudflare.com resolves to 108.162.192.213, 172.64.32.213, 173.245.58.213 and 3 other IP addresses.