knowledgecompanion.com - dns.ninja

`knowledgecompanion.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3037::6815:30e4^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:bc40^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.48.228^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.188.64^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`arnold.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b45^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arnold.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c145^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`arnold.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2145^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`arnold.ns.cloudflare.com`
		A	108.162.193.69^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arnold.ns.cloudflare.com`
		A	172.64.33.69^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arnold.ns.cloudflare.com`
		A	173.245.59.69^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arnold.ns.cloudflare.com`
NS	`elsa.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a6f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elsa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c06f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`elsa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:206f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`elsa.ns.cloudflare.com`
		A	108.162.192.111^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elsa.ns.cloudflare.com`
		A	172.64.32.111^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elsa.ns.cloudflare.com`
		A	173.245.58.111^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elsa.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c23::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f26.1e100.net`
		A	142.251.163.26^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.26^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`aspmx2.googlemail.com`⁽¹⁰⁾
		A	2800:3f0:4003:c14::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.26^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f26.1e100.net`
MX	`aspmx3.googlemail.com`⁽¹⁰⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
TXT	`google-site-verification=ffDfxpY68EhjfHb6ZnXPb8GgvN84aQK9OVj8gzU5Gq8`
TXT	`v=spf1 include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.48.228, 172.67.188.64
		IPv6 hints	2606:4700:3037::6815:30e4, 2606:4700:3037::ac43:bc40
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=111, name=cloudflare-ech.com
SOA	`arnold.ns.cloudflare.com`dns@cloudflare.com serial=2410890030

`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=1786256234

Previously MX for

knowledgecompanion.com

Subdomains

www.knowledgecompanion.com

Same first word

knowledgecompanion.com

DNS History

20 records (11 active, 9 former)

●NSarnold.ns.cloudflare.com2026-02-15 → 2026-08-09 · 3 obs

○ 2017-04-11 01:40:04
● 2026-02-15 21:26:26
● 2026-08-09 06:26:52

●NSelsa.ns.cloudflare.com2026-02-15 → 2026-08-09 · 3 obs

○ 2017-04-11 01:40:04
● 2026-02-15 21:26:26
● 2026-08-09 06:26:52

○NSns369.websitewelcome.com2015-07-12 → 2017-04-11 · 4 obs

● 2015-07-12 11:50:50
● 2017-04-11 01:40:04
○ 2026-02-15 21:26:26
○ 2026-08-09 06:26:52

○NSns370.websitewelcome.com2015-07-12 → 2017-04-11 · 4 obs

● 2015-07-12 11:50:50
● 2017-04-11 01:40:04
○ 2026-02-15 21:26:26
○ 2026-08-09 06:26:52

●MXalt1.aspmx.l.google.com2026-02-15 → 2026-08-09 · 3 obs

○ 2017-04-11 01:40:04
● 2026-02-15 21:26:26
● 2026-08-09 06:26:52

●MXalt2.aspmx.l.google.com2026-02-15 → 2026-08-09 · 3 obs

○ 2017-04-11 01:40:04
● 2026-02-15 21:26:26
● 2026-08-09 06:26:52

●MXaspmx.l.google.com2026-02-15 → 2026-08-09 · 3 obs

○ 2017-04-11 01:40:04
● 2026-02-15 21:26:26
● 2026-08-09 06:26:52

●MXaspmx2.googlemail.com2026-02-15 → 2026-08-09 · 3 obs

○ 2017-04-11 01:40:04
● 2026-02-15 21:26:26
● 2026-08-09 06:26:52

●MXaspmx3.googlemail.com2026-02-15 → 2026-08-09 · 3 obs

○ 2017-04-11 01:40:04
● 2026-02-15 21:26:26
● 2026-08-09 06:26:52

○MXknowledgecompanion.com2015-07-12 → 2017-04-11 · 4 obs

● 2015-07-12 11:50:50
● 2017-04-11 01:40:04
○ 2026-02-15 21:26:26
○ 2026-08-09 06:26:52

●A104.21.48.2282026-02-15 → 2026-08-09 · 10 obs

○ 2017-04-11 01:40:04
● 2026-02-15 21:26:26
● 2026-03-02 01:28:00
○ 2026-03-03 14:05:46
● 2026-03-06 21:36:48
○ 2026-04-02 10:00:30
● 2026-04-06 18:11:18
○ 2026-04-29 17:17:18
● 2026-04-29 20:23:40
● 2026-08-09 06:26:52

●A172.67.188.642026-02-15 → 2026-08-09 · 10 obs

○A188.114.96.02026-03-03 → 2026-04-29 · 8 obs

○ 2026-03-02 01:28:00
● 2026-03-03 14:05:46
○ 2026-03-06 21:36:48
● 2026-04-02 10:00:30
○ 2026-04-06 18:11:18
● 2026-04-29 17:17:18
○ 2026-04-29 20:23:40
○ 2026-08-09 06:26:52

○A188.114.97.02026-03-03 → 2026-04-29 · 8 obs

○ 2026-03-02 01:28:00
● 2026-03-03 14:05:46
○ 2026-03-06 21:36:48
● 2026-04-02 10:00:30
○ 2026-04-06 18:11:18
● 2026-04-29 17:17:18
○ 2026-04-29 20:23:40
○ 2026-08-09 06:26:52

○A192.185.144.262015-07-12 → 2017-04-11 · 4 obs

● 2015-07-12 11:50:50
● 2017-04-11 01:40:04
○ 2026-02-15 21:26:26
○ 2026-08-09 06:26:52

○A2606:4700:3035::6815:30e42026-02-15 → 2026-06-17 · 12 obs

●A2606:4700:3037::6815:30e42026-07-11 → 2026-08-09 · 3 obs

○ 2026-06-17 07:34:22
● 2026-07-11 12:05:32
● 2026-08-09 06:26:52

●A2606:4700:3037::ac43:bc402026-02-15 → 2026-08-09 · 10 obs

○A2a06:98c1:3120::2026-03-03 → 2026-04-29 · 8 obs

○ 2026-03-02 01:28:00
● 2026-03-03 14:05:46
○ 2026-03-06 21:36:48
● 2026-04-02 10:00:30
○ 2026-04-06 18:11:18
● 2026-04-29 17:17:18
○ 2026-04-29 20:23:40
○ 2026-08-09 06:26:52

○A2a06:98c1:3121::2026-03-03 → 2026-04-29 · 8 obs

○ 2026-03-02 01:28:00
● 2026-03-03 14:05:46
○ 2026-03-06 21:36:48
● 2026-04-02 10:00:30
○ 2026-04-06 18:11:18
● 2026-04-29 17:17:18
○ 2026-04-29 20:23:40
○ 2026-08-09 06:26:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
knowledgecompanion.com	elsa.ns.cloudflare.com, arnold.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.69

NS records: elsa.ns.cloudflare.com, arnold.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for knowledgecompanion.com (unsigned zone)

⏱️ Timing

Total: 225ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.188.64, 104.21.48.228`
AAAA	2	`2606:4700:3037::6815:30e4, 2606:4700:3037::ac43:bc40`
NS	2	`arnold.ns.cloudflare.com, elsa.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), aspmx2.googlemail.com (pri: 10)...`
TXT	2	`google-site-verification=ffDfxpY68EhjfHb, v=spf1 include:_spf.google.com ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`arnold.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

www.knowledgecompanion.com is a subdomain of knowledgecompanion.com.

IP Addresses

knowledgecompanion.com directs to four IP numbers, which are 104.21.48.228, 172.67.188.64, 2606:4700:3037::6815:30e4 and 2606:4700:3037::ac43:bc40.

dating.ru.ydir.de, lnjiangling.com, xn--frderband-07a.at plus two other host names have IP numbers in common with knowledgecompanion.com.

Name Servers

knowledgecompanion.com is served by two delegated name servers, arnold.ns.cloudflare.com and elsa.ns.cloudflare.com.

The name server configuration of knowledgecompanion.com is shared with other domains, for instance grenton.nl, cfpmr.com, uranai.cc and two others.

The name servers of knowledgecompanion.com overlap at least partially with those of other domains — among them flatstatic.com, myfamily(0x736578).com, chesser.ie and two more.

The name servers alexa.ns.cloudflare.com, jamie.ns.cloudflare.com and trace.ns.cloudflare.com are commonly seen alongside these name servers.

Hosts with 6 IP addresses each:

arnold.ns.cloudflare.com carries IP addresses 108.162.193.69, 172.64.33.69 and 173.245.59.69, with 3 other addresses beyond those.

elsa.ns.cloudflare.com carries IP addresses 108.162.192.111, 172.64.32.111 and 173.245.58.111, with 3 other addresses beyond those.

Mail Servers

Five mail servers handle knowledgecompanion.com: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.

At least some of the mail servers used by knowledgecompanion.com are shared with other domains: ns500737.ns500737.ns500737.ns500599.ns500599.ns500724.ns500724.ns500599.ns500737.ns500737.ns500697.ns500599.ns500697.ns500697.yummyflingsfinder.com, effectivenessmatters.com, bangorparishchurch.org.uk and two others among them.

These mail servers are often deployed together with alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 other mail servers.

Host names pointing to two IP addresses:

aspmx2.googlemail.com maps to two IP addresses — 192.178.234.26 and 2800:3f0:4003:c14::1a.

aspmx3.googlemail.com maps to two IP addresses — 172.253.116.27 and 2a00:1450:400b:c02::1b.

aspmx.l.google.com maps to two IP addresses — 142.251.163.26 and 2607:f8b0:4004:c23::1a.

alt1.aspmx.l.google.com maps to two IP addresses — 192.178.234.26 and 2800:3f0:4003:c14::1b.

alt2.aspmx.l.google.com maps to two IP addresses — 172.253.116.27 and 2a00:1450:400b:c02::1a.

These two host names — aspmx2.googlemail.com and alt1.aspmx.l.google.com — each point to 192.178.234.26 IP addresses.

These two host names — aspmx3.googlemail.com and alt2.aspmx.l.google.com — each point to 172.253.116.27 IP addresses.