knowledgebrief.com - dns.ninja

`knowledgebrief.com`

DNSSEC	⚠️ Not signed
A	2606:4700:20::681a:c7f^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::681a:d7f^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::ac43:4436^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.12.127^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.13.127^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.68.54^{🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`erin.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a71^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c071^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`erin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2071^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`erin.ns.cloudflare.com`
		A	108.162.192.113^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
		A	172.64.32.113^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
		A	173.245.58.113^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
NS	`mario.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bcb^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mario.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1cb^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mario.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21cb^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mario.ns.cloudflare.com`
		A	108.162.193.203^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mario.ns.cloudflare.com`
		A	172.64.33.203^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mario.ns.cloudflare.com`
		A	173.245.59.203^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mario.ns.cloudflare.com`
MX	`knowledgebrief-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::7^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db4pr02cu00307.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::f^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db7pr03cu00507.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::3^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am6pr04cu00303.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::6^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am4pr0401cu00106.inbound.protection.outlook.com`
		A	52.101.68.29^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dbapr03cu00105.inbound.protection.outlook.com`
		A	52.101.68.36^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db5pr02cu00104.inbound.protection.outlook.com`
		A	52.101.73.6^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am6pr04cu00306.inbound.protection.outlook.com`
		A	52.101.73.30^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am7pr05cu00306.inbound.protection.outlook.com`
TXT	`9vq7sd1rptgacthvhhrkf1uele`
TXT	`MS=ms97576306`
TXT	`Sendinblue-code:e1192caf695aeec1174fc1cfa5a05fea`
TXT	`brevo-code:7743a25d383278ff3986536ad2fb245d`
TXT	`brevo-code:a4fe15275560a49cf5d79362c7a0d24b`
TXT	`brevo-code:cf38c7a24bc90ef5d5b513dd20405e29`
TXT	`brevo-code:f50e88b340c69b2b073b6be5c9eddeb0`
TXT	`detectify-verification=3051b22b33283b1e88a0e693f7b914d2`
TXT	`google-site-verification=4t6UGLzWp1F-BkbbMIMv4Cvyq_ZgWybbaEMCU7tNjDU`
TXT	`google-site-verification=WoX5S00TmKEaa44XcLcoNel7AW4acOhYlN5sWMtv7zY`
TXT	`google-site-verification=kgTUOpbtGOTVP2yy33JIgGPrfzPWuLqQgy7e5z5oZEg`
TXT	`v=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com include...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.26.12.127, 104.26.13.127, 172.67.68.54
		IPv6 hints	2606:4700:20::681a:c7f, 2606:4700:20::681a:d7f, 2606:4700:20::ac43:4436
SOA	`erin.ns.cloudflare.com`dns@cloudflare.com serial=2410121068

`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=1786292604

Subdomains

comms.knowledgebrief.com

www.knowledgebrief.com

mail.knowledgebrief.com

Same first word

knowledgebrief.com

DNS History

16 records (9 active, 7 former)

●NSerin.ns.cloudflare.com2016-03-31 → 2026-08-09 · 3 obs

○ 2015-12-04 19:33:28
● 2016-03-31 10:07:52
● 2026-08-09 16:47:12

●NSmario.ns.cloudflare.com2016-03-31 → 2026-08-09 · 3 obs

○ 2015-12-04 19:33:28
● 2016-03-31 10:07:52
● 2026-08-09 16:47:12

○NSns1.nexcess.net2015-07-13 → 2015-12-04 · 4 obs

● 2015-07-13 13:41:28
● 2015-12-04 19:33:28
○ 2016-03-31 10:07:52
○ 2026-08-09 16:47:12

○NSns2.nexcess.net2015-07-13 → 2015-12-04 · 4 obs

● 2015-07-13 13:41:28
● 2015-12-04 19:33:28
○ 2016-03-31 10:07:52
○ 2026-08-09 16:47:12

●MXknowledgebrief-com.mail.protection.outlook.com2015-07-13 → 2026-08-09 · 2 obs

● 2015-07-13 13:41:28
● 2026-08-09 16:47:12

○A104.24.4.262016-03-31 → 2017-06-08 · 5 obs

○ 2015-12-04 19:33:28
● 2016-03-31 10:07:52
● 2017-06-08 18:13:10
○ 2026-02-20 06:24:20
○ 2026-08-09 16:47:12

○A104.24.5.262016-03-31 → 2017-06-08 · 5 obs

○ 2015-12-04 19:33:28
● 2016-03-31 10:07:52
● 2017-06-08 18:13:10
○ 2026-02-20 06:24:20
○ 2026-08-09 16:47:12

●A104.26.12.1272026-02-20 → 2026-08-09 · 3 obs

○ 2017-06-08 18:13:10
● 2026-02-20 06:24:20
● 2026-08-09 16:47:12

●A104.26.13.1272026-02-20 → 2026-08-09 · 3 obs

○ 2017-06-08 18:13:10
● 2026-02-20 06:24:20
● 2026-08-09 16:47:12

●A172.67.68.542026-02-20 → 2026-08-09 · 3 obs

○ 2017-06-08 18:13:10
● 2026-02-20 06:24:20
● 2026-08-09 16:47:12

○A2400:cb00:2048:1::6818:41a2016-09-24 → 2017-06-08 · 5 obs

○ 2016-03-31 10:07:52
● 2016-09-24 04:51:06
● 2017-06-08 18:13:10
○ 2026-02-20 06:24:20
○ 2026-08-09 16:47:12

○A2400:cb00:2048:1::6818:51a2016-09-24 → 2017-06-08 · 5 obs

○ 2016-03-31 10:07:52
● 2016-09-24 04:51:06
● 2017-06-08 18:13:10
○ 2026-02-20 06:24:20
○ 2026-08-09 16:47:12

●A2606:4700:20::681a:c7f2026-02-20 → 2026-08-09 · 3 obs

○ 2017-06-08 18:13:10
● 2026-02-20 06:24:20
● 2026-08-09 16:47:12

●A2606:4700:20::681a:d7f2026-02-20 → 2026-08-09 · 3 obs

○ 2017-06-08 18:13:10
● 2026-02-20 06:24:20
● 2026-08-09 16:47:12

●A2606:4700:20::ac43:44362026-02-20 → 2026-08-09 · 3 obs

○ 2017-06-08 18:13:10
● 2026-02-20 06:24:20
● 2026-08-09 16:47:12

○A87.76.18.482015-07-13 → 2015-12-04 · 4 obs

● 2015-07-13 13:41:28
● 2015-12-04 19:33:28
○ 2016-03-31 10:07:52
○ 2026-08-09 16:47:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
knowledgebrief.com	erin.ns.cloudflare.com, mario.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.113

NS records: erin.ns.cloudflare.com, mario.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for knowledgebrief.com (unsigned zone)

⏱️ Timing

Total: 262ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`104.26.12.127, 172.67.68.54...`
AAAA	3	`2606:4700:20::ac43:4436, 2606:4700:20::681a:d7f...`
NS	2	`erin.ns.cloudflare.com, mario.ns.cloudflare.com`
MX	1	`knowledgebrief-com.mail.protection.outlo`
TXT	12	`9vq7sd1rptgacthvhhrkf1uele, MS=ms97576306...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`erin.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

comms.knowledgebrief.com, www.knowledgebrief.com and mail.knowledgebrief.com each fall under the parent domain knowledgebrief.com.

IP Addresses

knowledgebrief.com has 6 IP addresses — 104.26.12.127, 104.26.13.127, 172.67.68.54 and 3 more.

dairy-engineering.com, 8fd9dc39383d.8fd9dc39383d.8fd9dc39383d.8fd9dc39383d.8fd9dc39383d.8fd9dc39383d.8fd9dc39383d.8fd9dc39383d.8fd9dc39383d.8fd9dc39383d.8fd9dc39383d.8fd9dc39383d.motone.pl, 8fd9dc39383d.8fd9dc39383d.8fd9dc39383d.8fd9dc39383d.8fd9dc39383d.motone.pl and two other host names share IP numbers with knowledgebrief.com.

Name Servers

knowledgebrief.com is delegated to two name servers: erin.ns.cloudflare.com and mario.ns.cloudflare.com.

knowledgebrief.com uses the same name servers as several other domains — among them inovexamotion-system.com, signum-solutions.co.uk, c-1.top and two more.

knowledgebrief.com partially shares its NS delegation with several other domains, including goamil.com, olatov.com, champvasupplement.com and two others.

These name servers regularly co-occur with the name servers ivan.ns.cloudflare.com, lex.ns.cloudflare.com and elaine.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

erin.ns.cloudflare.com resolves to 108.162.192.113, 172.64.32.113, 173.245.58.113 and 3 other IP addresses.

mario.ns.cloudflare.com resolves to 108.162.193.203, 172.64.33.203, 173.245.59.203 and 3 other IP addresses.

Mail Servers

Mail for knowledgebrief.com is handled by a single mail server, knowledgebrief-com.mail.protection.outlook.com.

knowledgebrief-com.mail.protection.outlook.com resolves to 8 IP addresses — 52.101.68.29, 52.101.68.36, 52.101.73.6 and 5 others.