`plan4duke.net`

DNSSEC	⚠️ Not signed
A	152.16.0.233^{🇺🇸 DUKE-INTERCHANGE152.16.0.0/16 Autogenerated route object}
		PTR	`dukecaregivercommunityevent.com`
		PTR	`dukecaregiversupportprogram.com`
		PTR	`dukeconnectedcare.com`
		PTR	`dukehealth.com`
		PTR	`dukehealthraleigh.com`
		PTR	`dukemedicine.com`
		PTR	`dukeortho.com`
		PTR	`dukeweightlosssurgery.com`
		PTR	`dukewls.com`
		PTR	`team-hf.com`
		PTR	`vaccineforfamily.com`
		PTR	`dukecaregivercommunityevent.net`
		PTR	`dukecaregiversupportprogram.net`
		PTR	`dukeortho.net`
		PTR	`vaccineforfamily.net`
		PTR	`chavi.org`
		PTR	`clinicaltrialstransformation.org`
		PTR	`dcru.org`
		PTR	`dukecaregivercommunityevent.org`
		PTR	`dukecaregiversupportprogram.org`
		PTR	`dukeclinicaltrials.org`
		PTR	`dukeexechealth.org`
		PTR	`dukehealthraleigh.org`
		PTR	`dukelifeflight.org`
		PTR	`dukeortho.org`
		PTR	`dukepersonalizedmedicine.org`
		PTR	`dukeraleighhospital.org`
		PTR	`dukeregional.org`
		PTR	`dukespeechandhearing.org`
		PTR	`dukesurgery.org`
		PTR	`dukevein.org`
		PTR	`dukeweightlosssurgery.org`
		PTR	`dukewls.org`
		PTR	`durhamregional.org`
		PTR	`handatduke.org`
		PTR	`msmosaic.org`
		PTR	`team-hf.org`
		PTR	`trialstransformation.org`
		PTR	`vaccineforfamily.org`
		PTR	`biobank.duke.edu`
		PTR	`cancermoonshot.duke.edu`
		PTR	`centerforaging.duke.edu`
		PTR	`cmb.duke.edu`
		PTR	`dchi.duke.edu`
		PTR	`devbio.duke.edu`
		PTR	`dtmi.duke.edu`
		PTR	`dukeeyecme.duke.edu`
		PTR	`imind.duke.edu`
		PTR	`medicalstaffrecruitment.duke.edu`
		PTR	`orthopaedics.duke.edu`
		PTR	`orthopedics.duke.edu`
		PTR	`rheumatology.duke.edu`
		PTR	`riskcalc.duke.edu`
		PTR	`supportmedtraining.duke.edu`
		PTR	`www.clinicaltrialstransformation.org`
		PTR	`members.dukeexechealth.org`
		PTR	`compliance.dukehealth.org`
		PTR	`giving.dukehomecareandhospice.org`
		PTR	`cancer.dukemedicine.org`
		PTR	`corporate.dukemedicine.org`
		PTR	`eyecenter.dukemedicine.org`
		PTR	`strategicplanning.dukemedicine.org`
		PTR	`www.dukeregional.org`
		PTR	`www.trialstransformation.org`
		PTR	`www.biobank.duke.edu`
		PTR	`fellowship.cardiology.duke.edu`
		PTR	`board.dm.duke.edu`
		PTR	`cathgen.duhs.duke.edu`
		PTR	`dblab.duhs.duke.edu`
		PTR	`dclresearch.duhs.duke.edu`
		PTR	`dukefamilymedicine.duhs.duke.edu`
		PTR	`ed.duhs.duke.edu`
		PTR	`patientsafetyed.duhs.duke.edu`
		PTR	`ptot.duhs.duke.edu`
		PTR	`pwh-vip-00.duhs.duke.edu`
		PTR	`somprototype.duhs.duke.edu`
		PTR	`vetmed.duhs.duke.edu`
		PTR	`vip-ws-web01.duhs.duke.edu`
		PTR	`cardiofellows.mc.duke.edu`
		PTR	`cfm.mc.duke.edu`
		PTR	`cfmfacdev.mc.duke.edu`
		PTR	`clinical-leadership.mc.duke.edu`
		PTR	`crtp.mc.duke.edu`
		PTR	`development.mc.duke.edu`
		PTR	`dukeoccmed.mc.duke.edu`
		PTR	`finaid.mc.duke.edu`
		PTR	`gerifellowship.mc.duke.edu`
		PTR	`hyperthermia.mc.duke.edu`
		PTR	`paprogram.mc.duke.edu`
		PTR	`radccore.mc.duke.edu`
		PTR	`sicklecell.mc.duke.edu`
		PTR	`stedman.mc.duke.edu`
		PTR	`www.medicalstaffrecruitment.duke.edu`
		PTR	`agp.medschool.duke.edu`
		PTR	`bircwh.medschool.duke.edu`
		PTR	`kure.medschool.duke.edu`
		PTR	`www.orthopedics.duke.edu`
		PTR	`crso.som.duke.edu`
		PTR	`www.strategicplanning.dukemedicine.org`
		PTR	`www.communityrelations.duhs.duke.edu`
		PTR	`www.sicklecell.mc.duke.edu`
		PTR	`www.stedman.mc.duke.edu`
NS	`freedns1.registrar-servers.com` ⭐
		A	2605:9880:300:1400:101:1650:5e2:54^{🇺🇸 RELIABLESITENET-12605:9880:300::/42 ReliableSite Hosting}
		A	45.58.122.83^{🇺🇸 RELIABLESITENET-145.58.122.0/24 101 Possumtown Rd Piscataway, NJ 08854 United States}
NS	`freedns2.registrar-servers.com`
		A	2604:6600:0:1b::2^{🇺🇸 AS406762604:6600::/32 Psychz Networks}
		A	199.119.202.76^{🇺🇸 AS40676199.119.200.0/21 Psychz Networks}
			PTR	`pdns12.registrar-servers.com`
NS	`freedns3.registrar-servers.com`
		A	2001:bc8:6006:4000:8218:44ff:feef:d720^{🇫🇷 AS128762001:bc8::/32 Scaleway Paris, France}
		A	195.154.94.174^{🇫🇷 AS12876195.154.0.0/16 Scaleway Paris, France}
			PTR	`freedns3.registrar-servers.com`
NS	`freedns4.registrar-servers.com`
		A	2a02:29e0:1:103:103::1^{🇮🇹 ASSEFLOW2a02:29e0:1::/48}
		A	95.141.37.127^{🇮🇹 ASSEFLOW95.141.32.0/20 SeFlow.it Internet Services - wf2 - Milan}
NS	`freedns5.registrar-servers.com`
		A	2001:41d0:700:120f::1^{🇫🇷 OVH2001:41d0::/32 IPv6}
		A	54.36.109.15^{🇩🇪 OVH54.36.0.0/16}
			PTR	`freedns5.registrar-servers.com`
SOA	`freedns1.registrar-servers.com`hostmaster@registrar-servers.com serial=1574168795

`net`

	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=1785302597

Same first word

plan4duke.net

plan4duke.org

DNS History

10 records (6 active, 4 former)

●NSfreedns1.registrar-servers.com2026-02-15 → 2026-07-29 · 3 obs

○ 2018-01-02 18:46:50
● 2026-02-15 10:11:32
● 2026-07-29 05:25:22

●NSfreedns2.registrar-servers.com2026-02-15 → 2026-07-29 · 3 obs

○ 2018-01-02 18:46:50
● 2026-02-15 10:11:32
● 2026-07-29 05:25:22

●NSfreedns3.registrar-servers.com2026-02-15 → 2026-07-29 · 3 obs

○ 2018-01-02 18:46:50
● 2026-02-15 10:11:32
● 2026-07-29 05:25:22

●NSfreedns4.registrar-servers.com2026-02-15 → 2026-07-29 · 3 obs

○ 2018-01-02 18:46:50
● 2026-02-15 10:11:32
● 2026-07-29 05:25:22

●NSfreedns5.registrar-servers.com2026-02-15 → 2026-07-29 · 3 obs

○ 2018-01-02 18:46:50
● 2026-02-15 10:11:32
● 2026-07-29 05:25:22

○NSns91.worldnic.com2017-01-04 → 2018-01-02 · 4 obs

● 2017-01-04 00:46:56
● 2018-01-02 18:46:50
○ 2026-02-15 10:11:32
○ 2026-07-29 05:25:22

○NSns92.worldnic.com2017-01-04 → 2018-01-02 · 4 obs

● 2017-01-04 00:46:56
● 2018-01-02 18:46:50
○ 2026-02-15 10:11:32
○ 2026-07-29 05:25:22

○MXp.webcom.ctmail.com2017-01-04 → 2026-02-15 · 4 obs

● 2017-01-04 00:46:56
● 2026-02-15 10:11:32
○ 2026-03-22 07:59:30
○ 2026-07-29 05:25:22

●A152.16.0.2332026-02-15 → 2026-07-29 · 3 obs

○ 2018-01-02 18:46:50
● 2026-02-15 10:11:32
● 2026-07-29 05:25:22

○A152.16.198.1822017-01-04 → 2018-01-02 · 4 obs

● 2017-01-04 00:46:56
● 2018-01-02 18:46:50
○ 2026-02-15 10:11:32
○ 2026-07-29 05:25:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
plan4duke.net	freedns3.registrar-servers.com, freedns1.registrar-servers.com, freedns2.registrar-servers.com, freedns4.registrar-servers.com...	-

✅ Authoritative Response

Server:45.58.122.83

NS records: freedns3.registrar-servers.com, freedns1.registrar-servers.com, freedns2.registrar-servers.com, freedns4.registrar-servers.com, freedns5.registrar-servers.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for plan4duke.net (unsigned zone)

⏱️ Timing

Total: 574ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`152.16.0.233`
NS	5	`freedns5.registrar-servers.com, freedns2.registrar-servers.com...`
SOA	1	`freedns1.registrar-servers.com hostmaste`

Analysis

IP Addresses

plan4duke.net directs to one IP number, which is 152.16.0.233.

Among the host names that share IP numbers with plan4duke.net are mail.eyedisease.net, dchi.duke.edu, dhch.dukehealth.org and two others.

Name Servers

The authoritative name servers for plan4duke.net are freedns1.registrar-servers.com, freedns2.registrar-servers.com, freedns3.registrar-servers.com and two others.

plan4duke.net partially shares its NS delegation with several other domains, including hksitn.org.hk, bakery.fi, xpand.co.uk and two others.

In DNS configurations, these name servers often share authority with freedns4.registrar-servers.com, freedns5.registrar-servers.com, freedns11.registrar-servers.com and 3 other name servers.

Hosts with two IP numbers each:

freedns1.registrar-servers.com directs traffic to 45.58.122.83 and 2605:9880:300:1400:101:1650:5e2:54.

freedns2.registrar-servers.com directs traffic to 199.119.202.76 and 2604:6600:0:1b::2.

freedns3.registrar-servers.com directs traffic to 195.154.94.174 and 2001:bc8:6006:4000:8218:44ff:feef:d720.

freedns4.registrar-servers.com directs traffic to 95.141.37.127 and 2a02:29e0:1:103:103::1.

freedns5.registrar-servers.com directs traffic to 54.36.109.15 and 2001:41d0:700:120f::1.

plan4duke.net - robtex.com

plan4duke.net

net

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`plan4duke.net`

`net`