`citadel-engineering.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:243^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:80da^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.2.67^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.128.218^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`sterling.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c8f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sterling.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c38f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sterling.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:238f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sterling.ns.cloudflare.com`
		A	108.162.195.143^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sterling.ns.cloudflare.com`
		A	162.159.44.143^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sterling.ns.cloudflare.com`
		A	172.64.35.143^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sterling.ns.cloudflare.com`
NS	`zainab.ns.cloudflare.com`
		A	2606:4700:50::a29f:2695^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zainab.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c295^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`zainab.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2295^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`zainab.ns.cloudflare.com`
		A	108.162.194.149^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zainab.ns.cloudflare.com`
		A	162.159.38.149^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zainab.ns.cloudflare.com`
		A	172.64.34.149^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zainab.ns.cloudflare.com`
MX	`citadelengineering-com01i.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c902::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj2pr05cu00401.inbound.protection.outlook.com`
		A	2a01:111:f403:c922::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl0pr02cu00702.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch1pr04cu00101.inbound.protection.outlook.com`
		A	2a01:111:f403:f909::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn6pr04cu00200.inbound.protection.outlook.com`
		A	52.101.10.18^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bn8pr05cu00302.inbound.protection.outlook.com`
		A	52.101.40.24^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-cy5pr05cu00100.inbound.protection.outlook.com`
		A	52.101.41.24^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj0pr03cu01600.inbound.protection.outlook.com`
		A	52.101.41.56^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj0pr21cu00100.inbound.protection.outlook.com`
TXT	`MS=ms73457171`
TXT	`MS=ms73457171`
TXT	`firebase=cecbpm-33900`
TXT	`google-site-verification=OEyyGxKnWhl7vdRQZcA-dwboYRgktt7N3gNma-qRQNE`
TXT	`include:sender.zohobooks.com`
TXT	`ms73457171`
TXT	`v=spf1 include:spf.protection.outlook.com include:sender.zohobooks.com includ...`
TXT	`zoho-verification=zb1560278439303.zmverify.zoho.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.2.67, 172.67.128.218
		IPv6	2606:4700:3032::6815:243, 2606:4700:3037::ac43:80da
SOA	`sterling.ns.cloudflare.com`dns@cloudflare.com serial=2398549952

`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=1774731907

Previously MX for

citadel-engineering.com

Same first word

citadel-engineering.com

DNS History

18 records (7 active, 11 former)

○NSns1.ati24.com2015-11-03 → 2016-04-04 · 4 obs

● 2015-11-03 07:14:34
● 2016-04-04 07:17:34
○ 2016-09-12 10:14:10
○ 2026-03-28 21:29:24

○NSns1.syrahost.com2016-09-12 → 2017-04-03 · 5 obs

○ 2016-04-04 07:17:34
● 2016-09-12 10:14:10
● 2017-04-03 10:52:56
○ 2026-03-25 02:00:38
○ 2026-03-28 21:29:24

○NSns2.ati24.com2015-11-03 → 2016-04-04 · 4 obs

● 2015-11-03 07:14:34
● 2016-04-04 07:17:34
○ 2016-09-12 10:14:10
○ 2026-03-28 21:29:24

●NSsterling.ns.cloudflare.com2026-03-25 → 2026-03-28 · 3 obs

○ 2017-04-03 10:52:56
● 2026-03-25 02:00:38
● 2026-03-28 21:29:24

●NSzainab.ns.cloudflare.com2026-03-25 → 2026-03-28 · 3 obs

○ 2017-04-03 10:52:56
● 2026-03-25 02:00:38
● 2026-03-28 21:29:24

○MXcitadel-engineering.com2015-11-03 → 2016-04-04 · 4 obs

● 2015-11-03 07:14:34
● 2016-04-04 07:17:34
○ 2016-09-12 10:14:10
○ 2026-03-28 21:29:24

●MXcitadelengineering-com01i.mail.protection.outlook.com2026-03-25 → 2026-03-28 · 3 obs

○ 2017-04-03 10:52:56
● 2026-03-25 02:00:38
● 2026-03-28 21:29:24

○MXmail.citadel-engineering.com2016-09-12 → 2017-04-03 · 5 obs

○ 2016-04-04 07:17:34
● 2016-09-12 10:14:10
● 2017-04-03 10:52:56
○ 2026-03-25 02:00:38
○ 2026-03-28 21:29:24

●A104.21.2.672026-03-25 → 2026-03-28 · 9 obs

○ 2017-04-03 10:52:56
● 2026-03-25 02:00:38
● 2026-03-26 14:46:42
○ 2026-03-27 05:47:14
○ 2026-03-27 14:32:38
● 2026-03-27 15:22:20
○ 2026-03-27 22:50:10
● 2026-03-28 17:57:12
● 2026-03-28 21:29:24

●A172.67.128.2182026-03-25 → 2026-03-28 · 9 obs

○A188.114.96.02026-03-27 → 2026-03-27 · 7 obs

○ 2026-03-26 14:46:42
● 2026-03-27 05:47:14
● 2026-03-27 14:32:38
○ 2026-03-27 15:22:20
● 2026-03-27 22:50:10
○ 2026-03-28 17:57:12
○ 2026-03-28 21:29:24

○A188.114.97.02026-03-27 → 2026-03-27 · 7 obs

○ 2026-03-26 14:46:42
● 2026-03-27 05:47:14
● 2026-03-27 14:32:38
○ 2026-03-27 15:22:20
● 2026-03-27 22:50:10
○ 2026-03-28 17:57:12
○ 2026-03-28 21:29:24

○A203.170.86.892016-09-12 → 2017-04-03 · 5 obs

○ 2016-04-04 07:17:34
● 2016-09-12 10:14:10
● 2017-04-03 10:52:56
○ 2026-03-25 02:00:38
○ 2026-03-28 21:29:24

○A216.158.77.1002015-11-03 → 2016-04-04 · 4 obs

● 2015-11-03 07:14:34
● 2016-04-04 07:17:34
○ 2016-09-12 10:14:10
○ 2026-03-28 21:29:24

●A2606:4700:3032::6815:2432026-03-25 → 2026-03-28 · 9 obs

●A2606:4700:3037::ac43:80da2026-03-25 → 2026-03-28 · 9 obs

○A2a06:98c1:3120::2026-03-27 → 2026-03-27 · 7 obs

○ 2026-03-26 14:46:42
● 2026-03-27 05:47:14
● 2026-03-27 14:32:38
○ 2026-03-27 15:22:20
● 2026-03-27 22:50:10
○ 2026-03-28 17:57:12
○ 2026-03-28 21:29:24

○A2a06:98c1:3121::2026-03-27 → 2026-03-27 · 7 obs

○ 2026-03-26 14:46:42
● 2026-03-27 05:47:14
● 2026-03-27 14:32:38
○ 2026-03-27 15:22:20
● 2026-03-27 22:50:10
○ 2026-03-28 17:57:12
○ 2026-03-28 21:29:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, h.gtld-servers.net, e.gtld-servers.net, a.gtld-servers.net...	-
citadel-engineering.com	zainab.ns.cloudflare.com, sterling.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.143

NS records: zainab.ns.cloudflare.com, sterling.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for citadel-engineering.com (unsigned zone)

⏱️ Timing

Total: 109ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.2.67, 172.67.128.218`
AAAA	2	`2606:4700:3032::6815:243, 2606:4700:3037::ac43:80da`
NS	2	`sterling.ns.cloudflare.com, zainab.ns.cloudflare.com`
MX	1	`citadelengineering-com01i.mail.protectio`
TXT	8	`MS=ms73457171, MS=ms73457171...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`sterling.ns.cloudflare.com dns.cloudflar`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

citadel-engineering.com refers to four IP numbers: 2606:4700:3032::6815:243, 2606:4700:3037::ac43:80da, 104.21.2.67 and 172.67.128.218.

Other host names, for instance onepopz.com, www.natursana.it, ns1.awasociados.com, eversealed.com and ucl-football.com share IP numbers with citadel-engineering.com.

Name Servers

citadel-engineering.com's delegation uses two name servers: sterling.ns.cloudflare.com and zainab.ns.cloudflare.com.

citadel-engineering.com uses the same name server setup as other domains, such as innovation-amazon.com, bestfriendsofpets.org, xenoravique.com, pmindiaun.org and crofinestora.com.

citadel-engineering.com at least partially shares name servers with other domains, including opnaargroen.nl, dishubbandarlampung.com, scriboratide.com, my-dress.com.ua and kitazima.com.

These name servers are often used with henry.ns.cloudflare.com and kim.ns.cloudflare.com.

Host names with six IP numbers:

sterling.ns.cloudflare.com points to 2606:4700:58::a29f:2c8f, 2803:f800:50::6ca2:c38f, 2a06:98c1:50::ac40:238f, 108.162.195.143, 162.159.44.143 and 172.64.35.143.

zainab.ns.cloudflare.com points to 2606:4700:50::a29f:2695, 2803:f800:50::6ca2:c295, 2a06:98c1:50::ac40:2295, 108.162.194.149, 162.159.38.149 and 172.64.34.149.

Mail Servers

A single mail server handles citadel-engineering.com, citadelengineering-com01i.mail.protection.outlook.com.

Host citadelengineering-com01i.mail.protection.outlook.com points to eight IPs: 2a01:111:f403:c902::1, 2a01:111:f403:c922::2, 2a01:111:f403:c946::1, 2a01:111:f403:f909::, 52.101.10.18, 52.101.40.24, 52.101.41.24 and 52.101.41.56.

citadel-engineering.com - robtex.com