knowcd.com - dns.ninja

`knowcd.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:1d80^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:9504^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.29.128^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.149.4^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`fiona.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a9d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`fiona.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c09d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`fiona.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:209d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`fiona.ns.cloudflare.com`
		A	108.162.192.157^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`fiona.ns.cloudflare.com`
		A	172.64.32.157^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`fiona.ns.cloudflare.com`
		A	173.245.58.157^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`fiona.ns.cloudflare.com`
NS	`leland.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c08^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leland.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c308^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`leland.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2308^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`leland.ns.cloudflare.com`
		A	108.162.195.8^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leland.ns.cloudflare.com`
		A	162.159.44.8^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leland.ns.cloudflare.com`
		A	172.64.35.8^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leland.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.29.128, 172.67.149.4
		IPv6 hints	2606:4700:3034::6815:1d80, 2606:4700:3036::ac43:9504
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=102, name=cloudflare-ech.com
SOA	`fiona.ns.cloudflare.com`dns@cloudflare.com serial=2405470027

`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=1783161536

Same first word

knowcd.com

Similar names

wkdonc.github.io

wdnokc.com

wnkodc.com

downck.com

dkcnow.com

DNS History

10 records (6 active, 4 former)

●NSfiona.ns.cloudflare.com2026-03-08 → 2026-07-04 · 2 obs

● 2026-03-08 09:29:54
● 2026-07-04 11:05:58

●NSleland.ns.cloudflare.com2026-03-08 → 2026-07-04 · 2 obs

● 2026-03-08 09:29:54
● 2026-07-04 11:05:58

●A104.21.29.1282026-03-08 → 2026-07-04 · 6 obs

● 2026-03-08 09:29:54
● 2026-05-18 04:30:42
○ 2026-05-28 23:29:14
● 2026-05-31 20:49:56
○ 2026-06-21 12:06:12
● 2026-07-04 11:05:58

●A172.67.149.42026-03-08 → 2026-07-04 · 6 obs

● 2026-03-08 09:29:54
● 2026-05-18 04:30:42
○ 2026-05-28 23:29:14
● 2026-05-31 20:49:56
○ 2026-06-21 12:06:12
● 2026-07-04 11:05:58

○A188.114.96.02026-05-28 → 2026-06-21 · 5 obs

○ 2026-05-18 04:30:42
● 2026-05-28 23:29:14
○ 2026-05-31 20:49:56
● 2026-06-21 12:06:12
○ 2026-07-04 11:05:58

○A188.114.97.02026-05-28 → 2026-06-21 · 5 obs

○ 2026-05-18 04:30:42
● 2026-05-28 23:29:14
○ 2026-05-31 20:49:56
● 2026-06-21 12:06:12
○ 2026-07-04 11:05:58

●A2606:4700:3034::6815:1d802026-03-08 → 2026-07-04 · 6 obs

● 2026-03-08 09:29:54
● 2026-05-18 04:30:42
○ 2026-05-28 23:29:14
● 2026-05-31 20:49:56
○ 2026-06-21 12:06:12
● 2026-07-04 11:05:58

●A2606:4700:3036::ac43:95042026-03-08 → 2026-07-04 · 6 obs

● 2026-03-08 09:29:54
● 2026-05-18 04:30:42
○ 2026-05-28 23:29:14
● 2026-05-31 20:49:56
○ 2026-06-21 12:06:12
● 2026-07-04 11:05:58

○A2a06:98c1:3120::2026-05-28 → 2026-06-21 · 5 obs

○ 2026-05-18 04:30:42
● 2026-05-28 23:29:14
○ 2026-05-31 20:49:56
● 2026-06-21 12:06:12
○ 2026-07-04 11:05:58

○A2a06:98c1:3121::2026-05-28 → 2026-06-21 · 5 obs

○ 2026-05-18 04:30:42
● 2026-05-28 23:29:14
○ 2026-05-31 20:49:56
● 2026-06-21 12:06:12
○ 2026-07-04 11:05:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
knowcd.com	fiona.ns.cloudflare.com, leland.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.157

NS records: fiona.ns.cloudflare.com, leland.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for knowcd.com (unsigned zone)

⏱️ Timing

Total: 407ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.149.4, 104.21.29.128`
AAAA	2	`2606:4700:3034::6815:1d80, 2606:4700:3036::ac43:9504`
NS	2	`fiona.ns.cloudflare.com, leland.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`fiona.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

knowcd.com points to the four IP addresses 104.21.29.128, 172.67.149.4, 2606:4700:3034::6815:1d80 and 2606:4700:3036::ac43:9504.

pspfanboy.com, marirs.net, hfmfny.com and two other host names share IP numbers with knowcd.com.

Name Servers

knowcd.com is served by two delegated name servers, fiona.ns.cloudflare.com and leland.ns.cloudflare.com.

knowcd.com uses the same name servers as several other domains — among them acsielevators.com, 25450.com, kja.com and two more.

The name servers of knowcd.com overlap at least partially with those of other domains — among them nrelax.ru, futbollibretv.io, sorsnce.com and two more.

Hostnames that resolve to 6 IP addresses:

fiona.ns.cloudflare.com carries IP addresses 108.162.192.157, 172.64.32.157 and 173.245.58.157, with 3 other addresses beyond those.

leland.ns.cloudflare.com carries IP addresses 108.162.195.8, 162.159.44.8 and 172.64.35.8, with 3 other addresses beyond those.