`dukeconstructioninc.com`

DNSSEC	⚠️ Not signed
A	157.55.151.210^{🇺🇸 Microsoft157.55.0.0/16}
NS	`ns61.worldnic.com` ⭐
		A	162.159.26.185^{Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns62.worldnic.com`
		A	162.159.27.127^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`dukeco-co.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c936::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-cy1pr05cu00400.inbound.protection.outlook.com`
		A	2a01:111:f403:f901::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl2pr02cu00402.inbound.protection.outlook.com`
		A	2a01:111:f403:f90d::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sn1pr0501cu00301.inbound.protection.outlook.com`
		A	2a01:111:f403:f913::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-cy1pr03cu00100.inbound.protection.outlook.com`
		A	52.101.8.46^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dm6pr05cu00406.inbound.protection.outlook.com`
		A	52.101.41.3^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj2pr05cu00103.inbound.protection.outlook.com`
		A	52.101.50.7^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-co1pr21cu00207.inbound.protection.outlook.com`
		A	52.101.194.13^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ch0pr04cu00605.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
TXT	`MS=ms96896350`
SOA	`NS61.WORLDNIC.com`namehost@WORLDNIC.com serial=125100307

`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=1774982422

Subdomains

mail.dukeconstructioninc.com

Same first word

dukeconstructioninc.com

DNS History

17 records (4 active, 13 former)

○NSns.altelco.net2007-11-10 → 2007-11-10 · 3 obs

● 2007-11-10 01:03:36
○ 2015-05-25 20:23:24
○ 2026-03-31 19:08:08

○NSns.inetmsi.net2007-11-10 → 2007-11-10 · 3 obs

● 2007-11-10 01:03:36
○ 2015-05-25 20:23:24
○ 2026-03-31 19:08:08

●NSns61.worldnic.com2015-05-25 → 2026-03-31 · 3 obs

○ 2007-11-10 01:03:36
● 2015-05-25 20:23:24
● 2026-03-31 19:08:08

●NSns62.worldnic.com2015-05-25 → 2026-03-31 · 3 obs

○ 2007-11-10 01:03:36
● 2015-05-25 20:23:24
● 2026-03-31 19:08:08

○MXasp.reflexion.net2018-09-18 → 2018-09-18 · 4 obs

○ 2017-01-10 23:03:48
● 2018-09-18 23:32:02
○ 2026-03-20 02:40:50
○ 2026-03-31 19:08:08

●MXdukeco-co.mail.protection.outlook.com2026-03-20 → 2026-03-31 · 3 obs

○ 2018-09-18 23:32:02
● 2026-03-20 02:40:50
● 2026-03-31 19:08:08

○MXdukeco.co.bak-mx.na0107.smtpbak.com2017-01-10 → 2017-01-10 · 4 obs

○ 2016-04-30 22:00:32
● 2017-01-10 23:03:48
○ 2018-09-18 23:32:02
○ 2026-03-31 19:08:08

○MXdukeco.co.pri-mx.na0107.smtproutes.com2017-01-10 → 2017-01-10 · 4 obs

○ 2016-04-30 22:00:32
● 2017-01-10 23:03:48
○ 2018-09-18 23:32:02
○ 2026-03-31 19:08:08

○MXdukeconstructioninc.com.inbound15.mxlogic.net2015-05-25 → 2016-04-30 · 5 obs

○ 2007-11-10 01:03:36
● 2015-05-25 20:23:24
● 2016-04-30 22:00:32
○ 2017-01-10 23:03:48
○ 2026-03-31 19:08:08

○MXdukeconstructioninc.com.inbound15.mxlogicmx.net2015-05-25 → 2016-04-30 · 5 obs

○ 2007-11-10 01:03:36
● 2015-05-25 20:23:24
● 2016-04-30 22:00:32
○ 2017-01-10 23:03:48
○ 2026-03-31 19:08:08

○MXdukeconstructioninc.com.s6a1.psmtp.com2007-11-10 → 2007-11-10 · 3 obs

● 2007-11-10 01:03:36
○ 2015-05-25 20:23:24
○ 2026-03-31 19:08:08

○MXdukeconstructioninc.com.s6a2.psmtp.com2007-11-10 → 2007-11-10 · 3 obs

● 2007-11-10 01:03:36
○ 2015-05-25 20:23:24
○ 2026-03-31 19:08:08

○MXdukeconstructioninc.com.s6b1.psmtp.com2007-11-10 → 2007-11-10 · 3 obs

● 2007-11-10 01:03:36
○ 2015-05-25 20:23:24
○ 2026-03-31 19:08:08

○MXdukeconstructioninc.com.s6b2.psmtp.com2007-11-10 → 2007-11-10 · 3 obs

● 2007-11-10 01:03:36
○ 2015-05-25 20:23:24
○ 2026-03-31 19:08:08

○MXmail.dukeconstructioninc.com2007-11-10 → 2007-11-10 · 3 obs

● 2007-11-10 01:03:36
○ 2015-05-25 20:23:24
○ 2026-03-31 19:08:08

●A157.55.151.2102015-05-25 → 2026-03-31 · 3 obs

○ 2007-11-10 01:03:36
● 2015-05-25 20:23:24
● 2026-03-31 19:08:08

○A65.42.175.742007-11-10 → 2007-11-10 · 3 obs

● 2007-11-10 01:03:36
○ 2015-05-25 20:23:24
○ 2026-03-31 19:08:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, l.gtld-servers.net, k.gtld-servers.net, g.gtld-servers.net...	-
dukeconstructioninc.com	ns61.worldnic.com, ns62.worldnic.com	2 records

✅ Authoritative Response

Server:162.159.26.185

NS records: ns61.worldnic.com, ns62.worldnic.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dukeconstructioninc.com (unsigned zone)

⏱️ Timing

Total: 273ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`157.55.151.210`
NS	2	`ns61.worldnic.com, ns62.worldnic.com`
MX	1	`dukeco-co.mail.protection.outlook.com (p`
TXT	2	`MS=ms96896350, v=spf1 include:spf.protection.outlook.co`
SOA	1	`NS61.WORLDNIC.com namehost.WORLDNIC.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns61.worldnic.com, ns62.worldnic.com)

Analysis

Hierarchy

dukeconstructioninc.com is the parent of mail.dukeconstructioninc.com.

IP Addresses

dukeconstructioninc.com resolves to one IP number: 157.55.151.210.

other host names including mocerf.net, theintegrationcenter.co, salto.cl, bbal.org and sheryltucker.com share IP numbers with dukeconstructioninc.com.

Name Servers

dukeconstructioninc.com is delegated to two name servers ns61.worldnic.com and ns62.worldnic.com.

dukeconstructioninc.com shares the same name server setup as other domains, for instance aoshosted.com, graintex.com, wsfa.net, postbayatrockypoint.com and centuryele.com.

dukeconstructioninc.com at least partially shares name servers with other domains, for instance merchantshospitality.nyc.

Host names with one IP number:

ns61.worldnic.com points to 162.159.26.185

ns62.worldnic.com points to 162.159.27.127

Mail Servers

dukeconstructioninc.com is handled by a single mail server, dukeco-co.mail.protection.outlook.com.

dukeconstructioninc.com shares the same mail server setup as other domains, for instance dukeco.co.

Host dukeco-co.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c936::, 2a01:111:f403:f901::2, 2a01:111:f403:f90d::1, 2a01:111:f403:f913::, 52.101.8.46, 52.101.41.3, 52.101.50.7 and 52.101.194.13.

dukeconstructioninc.com - robtex.com