`securedunderstanding.com`

DNSSEC	⚠️ Not signed
NS	`bailey.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2629^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bailey.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c229^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`bailey.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2229^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`bailey.ns.cloudflare.com`
		A	108.162.194.41^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bailey.ns.cloudflare.com`
		A	162.159.38.41^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bailey.ns.cloudflare.com`
		A	172.64.34.41^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bailey.ns.cloudflare.com`
NS	`trace.ns.cloudflare.com`
		A	2606:4700:58::a29f:2cac^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`trace.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3ac^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`trace.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23ac^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`trace.ns.cloudflare.com`
		A	108.162.195.172^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`trace.ns.cloudflare.com`
		A	162.159.44.172^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`trace.ns.cloudflare.com`
		A	172.64.35.172^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`trace.ns.cloudflare.com`
MX	`mx01.mail.icloud.com` ⭐
		A	17.42.251.62^{🇺🇸 Apple17.42.0.0/16}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
			PTR	`mx3.mail.icloud.com`
		A	17.56.9.31^{🇺🇸 Apple17.56.9.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.152.5^{🇺🇸 Apple17.57.152.0/23}
			PTR	`ic4-privaterelay.appleid.com`
			PTR	`smtp1.ic4-privaterelay.appleid.com`
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.154.33^{🇺🇸 Apple17.57.154.0/24}
		A	17.57.155.25^{🇺🇸 Apple17.57.155.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.156.30^{🇺🇸 Apple17.57.156.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
MX	`mx02.mail.icloud.com` ⭐
		A	17.42.251.62^{🇺🇸 Apple17.42.0.0/16}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
			PTR	`mx3.mail.icloud.com`
		A	17.56.9.31^{🇺🇸 Apple17.56.9.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.152.5^{🇺🇸 Apple17.57.152.0/23}
			PTR	`ic4-privaterelay.appleid.com`
			PTR	`smtp1.ic4-privaterelay.appleid.com`
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.154.33^{🇺🇸 Apple17.57.154.0/24}
		A	17.57.155.25^{🇺🇸 Apple17.57.155.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.156.30^{🇺🇸 Apple17.57.156.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
TXT	`apple-domain=CgiGp9YDIGUFkOnY`
TXT	`ca3-046eb92e8d0142b0a6e731d7318203d4`
TXT	`v=spf1 include:icloud.com ~all`
SOA	`bailey.ns.cloudflare.com`dns@cloudflare.com serial=2401267546

`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=1776253652

Same first word

securedunderstanding.com

DNS History

17 records (4 active, 13 former)

●NSbailey.ns.cloudflare.com2026-04-04 → 2026-04-15 · 3 obs

○ 2017-10-13 04:15:54
● 2026-04-04 11:15:30
● 2026-04-15 12:03:10

○NSkara.ns.cloudflare.com2016-12-13 → 2016-12-13 · 3 obs

● 2016-12-13 20:06:08
○ 2017-10-13 04:15:54
○ 2026-04-15 12:03:10

○NSns-1006.awsdns-61.net2017-10-13 → 2017-10-13 · 4 obs

○ 2016-12-13 20:06:08
● 2017-10-13 04:15:54
○ 2026-04-04 11:15:30
○ 2026-04-15 12:03:10

○NSns-128.awsdns-16.com2016-12-13 → 2017-10-13 · 4 obs

● 2016-12-13 20:06:08
● 2017-10-13 04:15:54
○ 2026-04-04 11:15:30
○ 2026-04-15 12:03:10

○NSns-1416.awsdns-49.org2017-10-13 → 2017-10-13 · 4 obs

○ 2016-12-13 20:06:08
● 2017-10-13 04:15:54
○ 2026-04-04 11:15:30
○ 2026-04-15 12:03:10

○NSns-1965.awsdns-53.co.uk2017-10-13 → 2017-10-13 · 4 obs

○ 2016-12-13 20:06:08
● 2017-10-13 04:15:54
○ 2026-04-04 11:15:30
○ 2026-04-15 12:03:10

○NSsid.ns.cloudflare.com2016-12-13 → 2016-12-13 · 3 obs

● 2016-12-13 20:06:08
○ 2017-10-13 04:15:54
○ 2026-04-15 12:03:10

●NStrace.ns.cloudflare.com2026-04-04 → 2026-04-15 · 3 obs

○ 2017-10-13 04:15:54
● 2026-04-04 11:15:30
● 2026-04-15 12:03:10

●MXmx01.mail.icloud.com2026-04-04 → 2026-04-15 · 3 obs

○ 2017-10-13 04:15:54
● 2026-04-04 11:15:30
● 2026-04-15 12:03:10

●MXmx02.mail.icloud.com2026-04-04 → 2026-04-15 · 3 obs

○ 2017-10-13 04:15:54
● 2026-04-04 11:15:30
● 2026-04-15 12:03:10

○MXmxa.mailgun.org2017-10-13 → 2017-10-13 · 3 obs

● 2017-10-13 04:15:54
○ 2026-04-04 11:15:30
○ 2026-04-15 12:03:10

○MXmxb.mailgun.org2017-10-13 → 2017-10-13 · 3 obs

● 2017-10-13 04:15:54
○ 2026-04-04 11:15:30
○ 2026-04-15 12:03:10

○A104.236.8.1542017-10-13 → 2017-10-13 · 4 obs

○ 2016-12-13 20:06:08
● 2017-10-13 04:15:54
○ 2026-04-04 11:15:30
○ 2026-04-15 12:03:10

○A198.185.159.1442016-12-13 → 2016-12-13 · 3 obs

● 2016-12-13 20:06:08
○ 2017-10-13 04:15:54
○ 2026-04-15 12:03:10

○A198.185.159.1452016-12-13 → 2016-12-13 · 3 obs

● 2016-12-13 20:06:08
○ 2017-10-13 04:15:54
○ 2026-04-15 12:03:10

○A198.49.23.1442016-12-13 → 2016-12-13 · 3 obs

● 2016-12-13 20:06:08
○ 2017-10-13 04:15:54
○ 2026-04-15 12:03:10

○A198.49.23.1452016-12-13 → 2016-12-13 · 3 obs

● 2016-12-13 20:06:08
○ 2017-10-13 04:15:54
○ 2026-04-15 12:03:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
securedunderstanding.com	bailey.ns.cloudflare.com, trace.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.172

NS records: bailey.ns.cloudflare.com, trace.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 210ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`bailey.ns.cloudflare.com, trace.ns.cloudflare.com`
MX	2	`mx01.mail.icloud.com (pri: 10), mx02.mail.icloud.com (pri: 10)`
TXT	3	`apple-domain=CgiGp9YDIGUFkOnY, ca3-046eb92e8d0142b0a6e731d7318203d4...`
SOA	1	`bailey.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

Name Servers

securedunderstanding.com is delegated to two name servers: bailey.ns.cloudflare.com and trace.ns.cloudflare.com.

securedunderstanding.com shares the same name server setup as midwestracquetsports.com, pmturkey.org, iqravirtualschool.com, lidim.com and tennis-express.com.

securedunderstanding.com at least partially shares name servers with other domains, for instance nagoyateriyaki.com, greatwallhackensacknj.com, 8g26.com, lusa.web.id and sewellorientalsakura.com.

These name servers are commonly used with becky.ns.cloudflare.com and elsa.ns.cloudflare.com.

Host names with six IP numbers:

bailey.ns.cloudflare.com points to 2606:4700:50::a29f:2629, 2803:f800:50::6ca2:c229, 2a06:98c1:50::ac40:2229, 108.162.194.41, 162.159.38.41 and 172.64.34.41.

trace.ns.cloudflare.com points to 2606:4700:58::a29f:2cac, 2803:f800:50::6ca2:c3ac, 2a06:98c1:50::ac40:23ac, 108.162.195.172, 162.159.44.172 and 172.64.35.172.

Mail Servers

securedunderstanding.com is handled by two mail servers: mx01.mail.icloud.com and mx02.mail.icloud.com.

The mail server setup for securedunderstanding.com matches that of other domains, for instance addorisio.com, dating.community, alahwaz.org, canadiancentral.ca and radanitsch.at.

securedunderstanding.com shares some mail servers with other domains, at least in part, for instance sendpalm.com.

Host names with six IP numbers:

Host name mx01.mail.icloud.com points to: 17.42.251.62, 17.56.9.31, 17.57.152.5, 17.57.154.33, 17.57.155.25 and 17.57.156.30.

Host name mx02.mail.icloud.com points to: 17.42.251.62, 17.56.9.31, 17.57.152.5, 17.57.154.33, 17.57.155.25 and 17.57.156.30.

Common targets for mx01.mail.icloud.com and mx02.mail.icloud.com: 17.42.251.62, 17.56.9.31, 17.57.152.5, 17.57.154.33, 17.57.155.25 and 17.57.156.30.

Host names that point to 17.42.251.62: mx01.mail.icloud.com and mx02.mail.icloud.com.

Host names that point to 17.56.9.31: mx01.mail.icloud.com and mx02.mail.icloud.com.

Host names that point to 17.57.152.5: mx01.mail.icloud.com and mx02.mail.icloud.com.

Host names that point to 17.57.154.33: mx01.mail.icloud.com and mx02.mail.icloud.com.

Host names that point to 17.57.155.25: mx01.mail.icloud.com and mx02.mail.icloud.com.

Host names that point to 17.57.156.30: mx01.mail.icloud.com and mx02.mail.icloud.com.

securedunderstanding.com - robtex.com