cengageptr.com - dns.ninja

`cengageptr.com`

DNSSEC	⚠️ Not signed
A	69.32.208.136^{🇺🇸 RoadRunner69.32.208.0/22 Proxy-registered route object for Cengage Learning Inc Attn Communications in CSO Mason, OH 45040}
		PTR	`abheslibrary.com`
		PTR	`anywhereyoulearn.com`
		PTR	`atcchallenge.com`
		PTR	`cadcampus.com`
		PTR	`cengagelearningptr.com`
		PTR	`cengageptr.com`
		PTR	`clinicalmanuals.com`
		PTR	`conceptmedia.com`
		PTR	`courseptr.com`
		PTR	`delmar.com`
		PTR	`delmaralliedhealth.com`
		PTR	`delmarcourseforward.com`
		PTR	`delmarelectric.com`
		PTR	`delmarfirescienceems.com`
		PTR	`delmarhealthcare.com`
		PTR	`delmarlabandtests.com`
		PTR	`delmarnursesdrughandbook.com`
		PTR	`delmarnursing.com`
		PTR	`delmarnursingskills.com`
		PTR	`delmarskillanalysis.com`
		PTR	`delmarsuccesstoday.com`
		PTR	`delmartechniciantestprep.com`
		PTR	`delmartechniciantraining.com`
		PTR	`delmartruckcommunity.com`
		PTR	`delmartruckingcommunity.com`
		PTR	`designexploration.com`
		PTR	`electricsource.com`
		PTR	`electronictech.com`
		PTR	`fdnyassessment.com`
		PTR	`firescience.com`
		PTR	`frontlinepub.com`
		PTR	`hbi-rca.com`
		PTR	`herbalnursesguide.com`
		PTR	`informationdestination.com`
		PTR	`ivtherapyskills.com`
		PTR	`journeymanprep.com`
		PTR	`journeymenprep.com`
		PTR	`labandtests.com`
		PTR	`medicalbillingandcoding.com`
		PTR	`medtermonline.com`
		PTR	`miladyonline.com`
		PTR	`miladyprofessional.com`
		PTR	`nclex-rnreview.com`
		PTR	`nursesndr.com`
		PTR	`nursespdr.com`
		PTR	`nursingassisting.com`
		PTR	`nursingreview.com`
		PTR	`onwordpress.com`
		PTR	`palpublications.com`
		PTR	`prgpublishing.com`
		PTR	`residentialacademy.com`
		PTR	`residentialconstructionacademy.com`
		PTR	`singpub.com`
		PTR	`site25.com`
		PTR	`skillanalysis.com`
		PTR	`techniciantestprep.com`
		PTR	`techniciantraining.com`
		PTR	`techtestprep.com`
		PTR	`trainingbay.com`
		PTR	`uhaipublishing.com`
		PTR	`westlegalstudies.com`
		PTR	`wiringbooks.com`
		PTR	`medtermonline.net`
		PTR	`miladyednet.net`
		PTR	`nursesndr.net`
		PTR	`autolibrary.org`
		PTR	`www.abheslibrary.com`
		PTR	`www.anywhereyoulearn.com`
		PTR	`www.atcchallenge.com`
		PTR	`www.cadcampus.com`
		PTR	`autoed.cengage.com`
		PTR	`bookfinder.cengage.com`
		PTR	`conceptmedia.cengage.com`
		PTR	`constructionedge.cengage.com`
		PTR	`courseptr.cengage.com`
		PTR	`delmarelectric.cengage.com`
		PTR	`delmarfire.cengage.com`
		PTR	`delmartrainingbay.cengage.com`
		PTR	`designexploration.cengage.com`
		PTR	`dewalt.cengage.com`
		PTR	`emarketing.cengage.com`
		PTR	`facultydevelopment.cengage.com`
		PTR	`greendestination.cengage.com`
		PTR	`informationdestination.cengage.com`
		PTR	`library.cengage.com`
		PTR	`miladyonline.cengage.com`
		PTR	`podcasts.cengage.com`
		PTR	`professional.cengage.com`
		PTR	`skillanalysis.cengage.com`
		PTR	`successtoday.cengage.com`
		PTR	`trainingbay.cengage.com`
		PTR	`ttp.cengage.com`
		PTR	`videopreview.cengage.com`
		PTR	`www.clinicalmanuals.com`
		PTR	`www.conceptmedia.com`
		PTR	`www.courseptr.com`
		PTR	`agriculture.delmar.com`
		PTR	`agriscience.delmar.com`
		PTR	`cam.delmar.com`
		PTR	`careersuccess.delmar.com`
		PTR	`culinary.delmar.com`
		PTR	`earlychilded.delmar.com`
		PTR	`electrical.delmar.com`
		PTR	`hospitality-tourism.delmar.com`
		PTR	`support.delmar.com`
		PTR	`truckdriving.delmar.com`
		PTR	`www.delmar.com`
		PTR	`www.delmaralliedhealth.com`
		PTR	`www.delmarcourseforward.com`
		PTR	`www.delmarelectric.com`
		PTR	`www.delmarfirescienceems.com`
		PTR	`podcasts.delmarhealthcare.com`
		PTR	`www.delmarhealthcare.com`
		PTR	`www.delmarlabandtests.com`
		PTR	`emarketing.delmarlearning.com`
		PTR	`eview.delmarlearning.com`
		PTR	`icc.delmarlearning.com`
		PTR	`instructors.delmarlearning.com`
		PTR	`ori4001.delmarlearning.com`
		PTR	`vogt.delmarlearning.com`
		PTR	`www.delmarnursesdrughandbook.com`
		PTR	`delaune.delmarnursing.com`
		PTR	`estes.delmarnursing.com`
		PTR	`frisch.delmarnursing.com`
		PTR	`nutrition.delmarnursing.com`
		PTR	`seaback.delmarnursing.com`
		PTR	`white.delmarnursing.com`
		PTR	`whiteduncan.delmarnursing.com`
		PTR	`www.delmarnursing.com`
		PTR	`www.delmarnursingskills.com`
		PTR	`www.delmarsuccesstoday.com`
		PTR	`www.delmartechniciantestprep.com`
		PTR	`www.delmartruckcommunity.com`
		PTR	`www.delmartruckingcommunity.com`
		PTR	`www.designexploration.com`
		PTR	`www.electricsource.com`
		PTR	`www.electronictech.com`
		PTR	`www.fdnyassessment.com`
		PTR	`www.frontlinepub.com`
		PTR	`www.hbi-rca.com`
		PTR	`www.herbalnursesguide.com`
		PTR	`www.informationdestination.com`
		PTR	`www.ivtherapyskills.com`
		PTR	`www.journeymanprep.com`
		PTR	`www.labandtests.com`
		PTR	`www.medicalbillingandcoding.com`
		PTR	`www.medtermonline.com`
		PTR	`content.miladyednet.com`
		PTR	`www.miladyonline.com`
		PTR	`www.nclex-rnreview.com`
		PTR	`www.nursesndr.com`
		PTR	`www.nursespdr.com`
		PTR	`www.nursingassisting.com`
		PTR	`tenet.nursingreview.com`
		PTR	`www.nursingreview.com`
		PTR	`www.onwordpress.com`
		PTR	`www.palpublications.com`
		PTR	`www.prgpublishing.com`
		PTR	`www.singpub.com`
		PTR	`www.site25.com`
		PTR	`www.skillanalysis.com`
		PTR	`www.techniciantestprep.com`
		PTR	`www.techniciantraining.com`
		PTR	`www.techtestprep.com`
		PTR	`videocontest.thegreendestination.com`
		PTR	`professional.thomsonlearning.com`
		PTR	`www.trainingbay.com`
		PTR	`www.uhaipublishing.com`
		PTR	`www.westlegalstudies.com`
		PTR	`www.wiringbooks.com`
		PTR	`medtermonline.medtermonline.net`
		PTR	`www.medtermonline.net`
		PTR	`nursesndr.nursesndr.net`
		PTR	`www.nursesndr.net`
		PTR	`www.autolibrary.org`
		PTR	`www.autoed.cengage.com`
		PTR	`www.conceptmedia.cengage.com`
		PTR	`www.constructionedge.cengage.com`
		PTR	`agriculture.delmar.cengage.com`
		PTR	`agriscience.delmar.cengage.com`
		PTR	`autodeskpress.delmar.cengage.com`
		PTR	`cadcampus.delmar.cengage.com`
		PTR	`courseforward.delmar.cengage.com`
		PTR	`culinary.delmar.cengage.com`
		PTR	`driversed.delmar.cengage.com`
		PTR	`earlychilded.delmar.cengage.com`
		PTR	`electronictech.delmar.cengage.com`
		PTR	`ems.delmar.cengage.com`
		PTR	`healthcare.delmar.cengage.com`
		PTR	`herbalnursesguide.delmar.cengage.com`
		PTR	`hospitality-tourism.delmar.cengage.com`
		PTR	`ivtherapyskills.delmar.cengage.com`
		PTR	`labandtests.delmar.cengage.com`
		PTR	`medicalbillingandcoding.delmar.cengage.com`
		PTR	`medtermonline.delmar.cengage.com`
		PTR	`nursespdr.delmar.cengage.com`
		PTR	`nursingreview.delmar.cengage.com`
		PTR	`nursingskills.delmar.cengage.com`
		PTR	`onwordpress.delmar.cengage.com`
		PTR	`paralegal.delmar.cengage.com`
		PTR	`residentialacademy.delmar.cengage.com`
		PTR	`support.delmar.cengage.com`
		PTR	`www.delmarelectric.cengage.com`
		PTR	`www.delmarfire.cengage.com`
		PTR	`www.designexploratin.cengage.com`
		PTR	`www.designexploration.cengage.com`
		PTR	`www.dewalt.cengage.com`
		PTR	`www.facultydevelopment.cengage.com`
		PTR	`www.greendestination.cengage.com`
		PTR	`www.informationdestination.cengage.com`
		PTR	`www.library.cengage.com`
		PTR	`www.miladyonline.cengage.com`
		PTR	`www.podcasts.cengage.com`
		PTR	`www.professional.cengage.com`
		PTR	`www.ttp.cengage.com`
		PTR	`www.agriculture.delmar.com`
		PTR	`www.agriscience.delmar.com`
		PTR	`www.cam.delmar.com`
		PTR	`www.careersuccess.delmar.com`
		PTR	`www.culinary.delmar.com`
		PTR	`www.earlychilded.delmar.com`
		PTR	`www.electrical.delmar.com`
		PTR	`www.hospitality-tourism.delmar.com`
		PTR	`www.support.delmar.com`
		PTR	`www.truckdriving.delmar.com`
		PTR	`www.podcasts.delmarhealthcare.com`
		PTR	`www.eview.delmarlearning.com`
		PTR	`www.icc.delmarlearning.com`
		PTR	`www.instructors.delmarlearning.com`
		PTR	`www.vogt.delmarlearning.com`
		PTR	`www.delaune.delmarnursing.com`
		PTR	`www.estes.delmarnursing.com`
		PTR	`www.frisch.delmarnursing.com`
		PTR	`www.nutrition.delmarnursing.com`
		PTR	`www.seaback.delmarnursing.com`
		PTR	`www.white.delmarnursing.com`
		PTR	`www.whiteduncan.delmarnursing.com`
		PTR	`www.tenet.nursingreview.com`
		PTR	`www.professional.thomsonlearning.com`
		PTR	`www.medtermonline.medtermonline.net`
		PTR	`miladyednet.net.miladyednet.net`
		PTR	`www.nursesndr.nursesndr.net`
		PTR	`autolibrary.org.autolibrary.org`
		PTR	`www.agriculture.delmar.cengage.com`
		PTR	`www.agriscience.delmar.cengage.com`
		PTR	`www.autodeskpress.delmar.cengage.com`
		PTR	`www.cadcampus.delmar.cengage.com`
		PTR	`www.careersuccess.delmar.cengage.com`
		PTR	`www.courseforward.delmar.cengage.com`
		PTR	`www.culinary.delmar.cengage.com`
		PTR	`www.driversed.delmar.cengage.com`
		PTR	`www.earlychilded.delmar.cengage.com`
		PTR	`www.electronictech.delmar.cengage.com`
		PTR	`www.ems.delmar.cengage.com`
		PTR	`www.healthcare.delmar.cengage.com`
		PTR	`www.herbalnursesguide.delmar.cengage.com`
		PTR	`www.hospitality-tourism.delmar.cengage.com`
		PTR	`www.ivtherapyskills.delmar.cengage.com`
		PTR	`www.labandtests.delmar.cengage.com`
		PTR	`www.medicalbillingandcoding.delmar.cengage.com`
		PTR	`www.medtermonline.delmar.cengage.com`
		PTR	`www.nursespdr.delmar.cengage.com`
		PTR	`www.nursingreview.delmar.cengage.com`
		PTR	`www.nursingskills.delmar.cengage.com`
		PTR	`www.onwordpress.delmar.cengage.com`
		PTR	`www.residentialacademy.delmar.cengage.com`
		PTR	`www.support.delmar.cengage.com`
		PTR	`www.autolibrary.org.autolibrary.org`
		PTR	`www.m.healthcare.delmar.cengage.com`
NS	`ns1x.cengage.net` ⭐ ⚠️ Not in parent delegation
		A	69.32.130.251^{🇺🇸 RoadRunner69.32.130.0/23 Proxy-registered route object for Cengage Learning Inc Attn Communications in CSO Mason, OH 45040}
			PTR	`ns1x.cengage.net`
NS	`dns1.p01.nsone.net` ⚠️ Not in zone NS records
		A	2620:4d:4000:6259:7:1:0:1^{🇺🇸 NSONE2620:4d:4000::/48 PNAP-ACS nsone-1}
			PTR	`dns1.p01.nsone.net`
		A	198.51.44.1^{🇺🇸 NSONE198.51.44.0/24}
			PTR	`dns1.p01.nsone.net`
NS	`dns2.p01.nsone.net` ⚠️ Not in zone NS records
		A	2a00:edc0:6259:7:1::2^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns2.p01.nsone.net`
		A	198.51.45.1^{🇺🇸 NSONE198.51.45.0/24}
			PTR	`dns2.p01.nsone.net`
NS	`dns3.p01.nsone.net` ⚠️ Not in zone NS records
		A	2620:4d:4000:6259:7:1:0:3^{🇺🇸 NSONE2620:4d:4000::/48 PNAP-ACS nsone-1}
			PTR	`dns3.p01.nsone.net`
		A	198.51.44.65^{🇺🇸 NSONE198.51.44.0/24}
			PTR	`dns3.p01.nsone.net`
NS	`dns4.p01.nsone.net` ⚠️ Not in zone NS records
		A	2a00:edc0:6259:7:1::4^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns4.p01.nsone.net`
		A	198.51.45.65^{🇺🇸 NSONE198.51.45.0/24}
			PTR	`dns4.p01.nsone.net`
NS	`ns2x.cengage.net` ⚠️ Not in parent delegation
		A	69.32.224.38^{🇺🇸 RoadRunner69.32.224.0/24 Proxy-registered route object for Cengage Learning Inc Attn Communications in CSO Mason, OH 45040}
			PTR	`kyindxns4.cengage.net`
			PTR	`ns2.cengage.net`
TXT	`v=spf1 -all`
SOA	`ns1x.cengage.net`hostmaster@ohcinmason.com serial=16

`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=1786279934

PTR for

136.208.32.69.in-addr.arpa

Subdomains

s-www.cengageptr.com

www.cengageptr.com

Same first word

cengageptr.com

DNS History

13 records (7 active, 6 former)

○NSa1-49.akam.net2026-04-02 → 2026-04-28 · 5 obs

○ 2017-08-24 18:43:22
● 2026-04-02 09:23:18
● 2026-04-28 13:16:32
○ 2026-05-09 16:23:24
○ 2026-08-09 12:59:28

○NSa13-64.akam.net2026-04-02 → 2026-04-28 · 5 obs

○ 2017-08-24 18:43:22
● 2026-04-02 09:23:18
● 2026-04-28 13:16:32
○ 2026-05-09 16:23:24
○ 2026-08-09 12:59:28

○NSa14-65.akam.net2026-04-02 → 2026-04-28 · 5 obs

○ 2017-08-24 18:43:22
● 2026-04-02 09:23:18
● 2026-04-28 13:16:32
○ 2026-05-09 16:23:24
○ 2026-08-09 12:59:28

●NSdns1.p01.nsone.net2026-04-02 → 2026-08-09 · 3 obs

○ 2017-08-24 18:43:22
● 2026-04-02 09:23:18
● 2026-08-09 12:59:28

●NSdns2.p01.nsone.net2026-04-02 → 2026-08-09 · 3 obs

○ 2017-08-24 18:43:22
● 2026-04-02 09:23:18
● 2026-08-09 12:59:28

●NSdns3.p01.nsone.net2026-04-02 → 2026-08-09 · 3 obs

○ 2017-08-24 18:43:22
● 2026-04-02 09:23:18
● 2026-08-09 12:59:28

●NSdns4.p01.nsone.net2026-05-09 → 2026-08-09 · 3 obs

○ 2026-04-28 13:16:32
● 2026-05-09 16:23:24
● 2026-08-09 12:59:28

○NSns1.cengage.net2015-08-23 → 2017-08-24 · 4 obs

● 2015-08-23 09:16:46
● 2017-08-24 18:43:22
○ 2026-04-02 09:23:18
○ 2026-08-09 12:59:28

●NSns1x.cengage.net2026-04-02 → 2026-08-09 · 3 obs

○ 2017-08-24 18:43:22
● 2026-04-02 09:23:18
● 2026-08-09 12:59:28

○NSns2.cengage.net2015-08-23 → 2017-08-24 · 4 obs

● 2015-08-23 09:16:46
● 2017-08-24 18:43:22
○ 2026-04-02 09:23:18
○ 2026-08-09 12:59:28

●NSns2x.cengage.net2026-04-02 → 2026-08-09 · 3 obs

○ 2017-08-24 18:43:22
● 2026-04-02 09:23:18
● 2026-08-09 12:59:28

○A69.32.132.2522015-08-23 → 2015-12-28 · 4 obs

● 2015-08-23 09:16:46
● 2015-12-28 07:55:54
○ 2017-02-19 15:14:30
○ 2026-08-09 12:59:28

●A69.32.208.1362017-02-19 → 2026-08-09 · 3 obs

○ 2015-12-28 07:55:54
● 2017-02-19 15:14:30
● 2026-08-09 12:59:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cengageptr.com	dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net	-

✅ Authoritative Response

Server:198.51.44.1

NS records: dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cengageptr.com (unsigned zone)

⏱️ Timing

Total: 501ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`69.32.208.136`
NS	2	`ns1x.cengage.net, ns2x.cengage.net`
TXT	1	`v=spf1 -all`
SOA	1	`ns1x.cengage.net hostmaster.ohcinmason.c`

Analysis

Hierarchy

s-www.cengageptr.com and www.cengageptr.com are both subdomains of cengageptr.com.

IP Addresses

cengageptr.com resolves to one IP address: 69.32.208.136.

www.autodeskpress.delmar.cengage.com, nursingassisting.com, www.facultydevelopment.cengage.com and two other host names share IP numbers with cengageptr.com.

Name Servers

cengageptr.com has 6 name servers — ns1x.cengage.net, ns2x.cengage.net, dns1.p01.nsone.net and 3 others.

cengageptr.com shares at least some of its name servers with other domains, including renova.com.my, cornerstonemarketingagency.com, osglockbox.com and two others.

These name servers are frequently seen alongside dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net and 7 other name servers.

Hostnames that resolve to two IP addresses:

dns1.p01.nsone.net resolves to 198.51.44.1 and 2620:4d:4000:6259:7:1:0:1.

dns2.p01.nsone.net resolves to 198.51.45.1 and 2a00:edc0:6259:7:1::2.

dns3.p01.nsone.net resolves to 198.51.44.65 and 2620:4d:4000:6259:7:1:0:3.

dns4.p01.nsone.net resolves to 198.51.45.65 and 2a00:edc0:6259:7:1::4.

Hosts with just one IP address:

ns1x.cengage.net resolves to 69.32.130.251.

ns2x.cengage.net resolves to 69.32.224.38.