cengagelearningptr.com - dns.ninja

`cengagelearningptr.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 2620:4D:4000::/48}
			PTR	`dns1.p01.nsone.net`
		A	198.51.44.1^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			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^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			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 2620:4D:4000::/48}
			PTR	`dns3.p01.nsone.net`
		A	198.51.44.65^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			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^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			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=13

`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=1783223371

PTR for

136.208.32.69.in-addr.arpa

Same first word

cengagelearningptr.com

DNS History

13 records (7 active, 6 former)

○NSa1-49.akam.net2026-03-13 → 2026-04-22 · 5 obs

○ 2017-04-03 00:33:44
● 2026-03-13 10:34:22
● 2026-04-22 06:23:56
○ 2026-06-28 15:57:50
○ 2026-07-05 04:14:04

○NSa13-64.akam.net2026-03-13 → 2026-04-22 · 5 obs

○ 2017-04-03 00:33:44
● 2026-03-13 10:34:22
● 2026-04-22 06:23:56
○ 2026-06-28 15:57:50
○ 2026-07-05 04:14:04

○NSa14-65.akam.net2026-03-13 → 2026-04-22 · 5 obs

○ 2017-04-03 00:33:44
● 2026-03-13 10:34:22
● 2026-04-22 06:23:56
○ 2026-06-28 15:57:50
○ 2026-07-05 04:14:04

●NSdns1.p01.nsone.net2026-03-13 → 2026-07-05 · 3 obs

○ 2017-04-03 00:33:44
● 2026-03-13 10:34:22
● 2026-07-05 04:14:04

●NSdns2.p01.nsone.net2026-03-13 → 2026-07-05 · 3 obs

○ 2017-04-03 00:33:44
● 2026-03-13 10:34:22
● 2026-07-05 04:14:04

●NSdns3.p01.nsone.net2026-03-13 → 2026-07-05 · 3 obs

○ 2017-04-03 00:33:44
● 2026-03-13 10:34:22
● 2026-07-05 04:14:04

●NSdns4.p01.nsone.net2026-06-28 → 2026-07-05 · 3 obs

○ 2026-04-22 06:23:56
● 2026-06-28 15:57:50
● 2026-07-05 04:14:04

○NSns1.cengage.net2015-08-22 → 2017-04-03 · 4 obs

● 2015-08-22 04:12:44
● 2017-04-03 00:33:44
○ 2026-03-13 10:34:22
○ 2026-07-05 04:14:04

●NSns1x.cengage.net2026-03-13 → 2026-07-05 · 3 obs

○ 2017-04-03 00:33:44
● 2026-03-13 10:34:22
● 2026-07-05 04:14:04

○NSns2.cengage.net2015-08-22 → 2017-04-03 · 4 obs

● 2015-08-22 04:12:44
● 2017-04-03 00:33:44
○ 2026-03-13 10:34:22
○ 2026-07-05 04:14:04

●NSns2x.cengage.net2026-03-13 → 2026-07-05 · 3 obs

○ 2017-04-03 00:33:44
● 2026-03-13 10:34:22
● 2026-07-05 04:14:04

○A69.32.132.2522015-08-22 → 2016-03-21 · 4 obs

● 2015-08-22 04:12:44
● 2016-03-21 19:36:34
○ 2016-09-12 15:33:38
○ 2026-07-05 04:14:04

●A69.32.208.1362016-09-12 → 2026-07-05 · 3 obs

○ 2016-03-21 19:36:34
● 2016-09-12 15:33:38
● 2026-07-05 04:14:04

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:198.51.45.1

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 cengagelearningptr.com (unsigned zone)

⏱️ Timing

Total: 456ms | 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

IP Addresses

cengagelearningptr.com resolves to just one IP address, 69.32.208.136.

Two other host names, along with www.truckdriving.delmar.com, www.electronictech.delmar.cengage.com and www.nursingreview.com, also share IP numbers with cengagelearningptr.com.

Name Servers

The DNS delegation for cengagelearningptr.com covers 6 name servers: ns1x.cengage.net, ns2x.cengage.net, dns1.p01.nsone.net and 3 more.

The name servers of cengagelearningptr.com overlap at least partially with those of other domains — among them sophiejurkiewicz.com, improv2grow.com, waystartech.com and two more.

These name servers commonly appear in delegations together with dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net and 7 other.

Host names that have two IP addresses:

dns1.p01.nsone.net maps to two IP addresses — 198.51.44.1 and 2620:4d:4000:6259:7:1:0:1.

dns2.p01.nsone.net maps to two IP addresses — 198.51.45.1 and 2a00:edc0:6259:7:1::2.

dns3.p01.nsone.net maps to two IP addresses — 198.51.44.65 and 2620:4d:4000:6259:7:1:0:3.

dns4.p01.nsone.net maps to two IP addresses — 198.51.45.65 and 2a00:edc0:6259:7:1::4.

Host names that point to one IP address:

ns1x.cengage.net points to the IP address 69.32.130.251.

ns2x.cengage.net points to the IP address 69.32.224.38.