courseptr.com - dns.ninja

`courseptr.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=27

`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=1783207106

WOT: SAFE (70/100)

PTR for

136.208.32.69.in-addr.arpa

Subdomains

www.courseptr.com

new.courseptr.com

Same first word

courseptr.com

Similar names

DNS History

13 records (7 active, 6 former)

○NSa1-49.akam.net2026-02-15 → 2026-05-02 · 5 obs

○ 2021-03-26 11:31:46
● 2026-02-15 04:26:30
● 2026-05-02 19:16:44
○ 2026-05-08 01:51:28
○ 2026-07-04 23:26:34

○NSa13-64.akam.net2026-02-15 → 2026-05-02 · 5 obs

○ 2021-03-26 11:31:46
● 2026-02-15 04:26:30
● 2026-05-02 19:16:44
○ 2026-05-08 01:51:28
○ 2026-07-04 23:26:34

○NSa14-65.akam.net2026-02-15 → 2026-05-02 · 5 obs

○ 2021-03-26 11:31:46
● 2026-02-15 04:26:30
● 2026-05-02 19:16:44
○ 2026-05-08 01:51:28
○ 2026-07-04 23:26:34

●NSdns1.p01.nsone.net2026-02-15 → 2026-07-04 · 3 obs

○ 2021-03-26 11:31:46
● 2026-02-15 04:26:30
● 2026-07-04 23:26:34

●NSdns2.p01.nsone.net2026-02-15 → 2026-07-04 · 3 obs

○ 2021-03-26 11:31:46
● 2026-02-15 04:26:30
● 2026-07-04 23:26:34

●NSdns3.p01.nsone.net2026-02-15 → 2026-07-04 · 3 obs

○ 2021-03-26 11:31:46
● 2026-02-15 04:26:30
● 2026-07-04 23:26:34

●NSdns4.p01.nsone.net2026-05-08 → 2026-07-04 · 3 obs

○ 2026-05-02 19:16:44
● 2026-05-08 01:51:28
● 2026-07-04 23:26:34

○NSns1.cengage.net2015-08-06 → 2021-03-26 · 4 obs

● 2015-08-06 04:40:48
● 2021-03-26 11:31:46
○ 2026-02-15 04:26:30
○ 2026-07-04 23:26:34

●NSns1x.cengage.net2026-02-15 → 2026-07-04 · 3 obs

○ 2021-03-26 11:31:46
● 2026-02-15 04:26:30
● 2026-07-04 23:26:34

○NSns2.cengage.net2015-08-06 → 2021-03-26 · 4 obs

● 2015-08-06 04:40:48
● 2021-03-26 11:31:46
○ 2026-02-15 04:26:30
○ 2026-07-04 23:26:34

●NSns2x.cengage.net2026-02-15 → 2026-07-04 · 3 obs

○ 2021-03-26 11:31:46
● 2026-02-15 04:26:30
● 2026-07-04 23:26:34

○A69.32.132.2522015-08-06 → 2016-06-02 · 4 obs

● 2015-08-06 04:40:48
● 2016-06-02 07:16:16
○ 2016-06-12 15:02:24
○ 2026-07-04 23:26:34

●A69.32.208.1362016-06-12 → 2026-07-04 · 3 obs

○ 2016-06-02 07:16:16
● 2016-06-12 15:02:24
● 2026-07-04 23:26:34

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:198.51.44.65

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 courseptr.com (unsigned zone)

⏱️ Timing

Total: 195ms | 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

courseptr.com serves as the parent of www.courseptr.com and new.courseptr.com.

IP Addresses

courseptr.com has exactly one IP address — 69.32.208.136.

cengageptr.com, www.driversed.delmar.cengage.com, www.palpublications.com plus two other host names have IP numbers in common with courseptr.com.

Name Servers

courseptr.com is served by 6 authoritative name servers — among them ns1x.cengage.net, ns2x.cengage.net, dns1.p01.nsone.net and 3 others.

courseptr.com partially shares its NS delegation with several other domains, including macstreet.com, thenowfactory.info, bmecommunity.org and two others.

In DNS configurations, these name servers often share authority with dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net and 7 other name servers.

Host names pointing to two IP addresses:

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

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

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

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

Host names resolving to a single IP address:

The hostname ns1x.cengage.net resolves to 69.32.130.251.

The hostname ns2x.cengage.net resolves to 69.32.224.38.